Arctic Equipment Manufacturing Corporation …...Arctic Equipment Manufacturing Corporation R00...

Arctic Equipment Manufacturing Corporation M3493 Hydraulic Power Unit Table of Contents Operating information................................................................................................................2 Hydraulic Operational Diagrams..............................................................................................7 Hydraulic Installation M3493 (one piece and MPX)………………………………………...11 One Piece Harness Installation………………………………………………………………...16 Multiplexing Wiring Installation………………………………………………………...........30 Hydraulic & Electrical Installation Multiple Harnesess..........................................................47 Parts List.......................................................................................................................................53 Handheld Controller – operation instructions………………………………………………..58 Valves replacement……………………………………………………………………………..59 Troubleshooting...........................................................................................................................60

Arctic Equipment Manufacturing Corporation R00 M3493 Power Unit

M3493

Operating Information


General Information about Power Unit M3493 WarrantyIdentification Forpurposesofwarrantyconsideration,recordingtheserialnumberofthepowerunitisnecessary.Thisserialnumberisdisplayedonthereservoirofthepowerunit.Maintenance Undernormaloperatingconditions,theM3493shouldnotrequireservicingduringtheplowingseason,providedpostseasonmaintenancehasbeencarriedout.Itisrecommendedthataftereveryseasonthehydraulicfluidtobechanged.(Forthefirst3yearsafterpurchaseapreventivemaintenanceschedulemustbeperformedinordertoextendyourwarranty‐pleaseseeyourdealerfordetails)ThereplacementfluidisUNIVISJ13(HVI13)hydraulicfluid.Automatictransmissionfluidisnotrecommendedforthissystemandmayleadtoaerationoftheoilinverycoldweatherconditions.UseofanyfluidotherthanJ13willvoidwarranty.Theoillevelinthereservoiristobewithin½"fromthetopsurface(whenliftcylinderiscollapsed). Whendrainingthehydraulicfluid,thehosesatthecylindersshouldbedisconnectedanddrained.Withthehosedisconnected,thecylindersshouldbecollapsedtodisplacetheoiloutofthecylinder. Periodically,andduringpostseasonmaintenance,makesuretheelectricalconnectionsaretightandfreeofcorrosion.Theterminalsmustbecoveredwithgreaseforadditionalprotectionfromcorrosion.Sometimes,inordertoreleasepressureinanglingcylindersitisnecessarytofollowtheseinstructions:whenbladeisangledtotheright(curbside),anglebladetotheleft(driverside)andasbladeisanglingpressreleasebutton,thanletgoofboth.ElectricalSystem Frequentlyproblemsdevelopduetoanundersizedelectricalchargingandstoragesystem.Generally,theheaviertheusage,theheavierthesystemshouldbe.Foramoderatelylightduty,thebatteryshouldnotbelessthan70ampere‐hoursandthealternatorshouldchargeatarateofnotlessthan60amperes.Forheavyusageandinthecasewhereanumberofotherdevicesarerunoffthebatterysimultaneously,heavierratingsarestronglyrecommended.ElectricMotor The8111electricmotoristwopoleelectromagneticmotor,consistingprimarilyofanarmature/commutator,twofieldcoils,fourbrushesinabrushholderset,andatubularsteelbodywithcastendcap. Thepowerunitwiththismotorisequippedwiththe03pump.Thiscombinationofpumpandmotoroffersoptimumperformance.

Arctic Equipment Manufacturing Corporation R00 M3493 Power Unit HydraulicPump Thehydraulicpumpconvertsmechanicalenergytransmittedbytheprimemover(inthiscasea12voltDCelectricmotor)intohydraulicenergy.Thehydraulicenergyisduetoflow(kineticenergy)andpressure(potentialenergy).Therateofenergyoutputisexpressedinhorsepower. Attheinlet,asthegearsunmesh,thevolumeinthecavityincreasestherebycausingfluidtoenter.Thisfluidisthencarriedbetweenthegearsandthehousingtotheothersideofthegearsintotheoutletcavity.Atthispointthegearteethmesh.Theoutletcavityvolumedecreases,causingfluidtoflowintothesystem.Notethatwithoutaload,thepressureattheoutletportisnil. Thepressureattheoutletofthepumpisduetoexternalloadsplacedonthesystem.Theseloadscanbetransmittedthoughcylindersandlinearactuatorsaswellashydraulicmotorsandrotaryactuators.Inpractice,systemcomponentsbyvirtueoforificeandlinesizes,offersomeresistancetotheflowoffluid.Thistranslatesintopressureattheoutletofthepump.ValveInformationPressureReliefValve Thepressurereliefvalveconsistsofaball,aretainingspringandaseat.Theballisexposedtothepressureintheoutletlinefromthepump.Thispressureactingontheexposedareaoftheballcausesaforceontheretainingspring.Whenthepressureissuchthattheforceontheballexceedstheforceinthespring(duetoapresetamountofprecompression)theballliftsofftheseatandthefluidfromtheoutletofthepumpisallowedtoflowbacktothereservoir.The“standardreliefvalvesetting”fortheM3493is2000psi.DirectionalValvesTheM3493circuitcontains4directionalvalvesidentifiedas‘A’,‘B’,‘C’and‘D’.Valves‘A’,‘C’and‘D’are3way,2positionspoolvalves.Valve‘B’isa2way2positionnormallyclosedpoppetvalve.Abasicdirectionalvalveconsistsofavalvecartridgeandacoil.Insidethecartridgevalve,anarmatureisattachedtothevalvemechanism.Thecoilconsistsofawirewrappedaroundaspool.Whenpowerisappliedtothecoil(thecoilisenergized),themagneticfieldcreatedbycoilpullsthearmatureintothecoil.The

Arctic Equipment Manufacturing Corporation R00 M3493 Power Unit armatureshiftsthevalvemechanismintotheenergizedposition.Whenpowerisremovedfromthecoil,aspringinsidethevalvecartridgepushesthearmatureandvalvemechanismtothede‐energizedposition.DirectionalValve‘B’ Valve‘B’isa2way2positionnormallyclosedpoppetvalvewhichisusedforloweringtheplow.Inthede‐energizedposition,valveBactsasacheckvalveallowingpumpflowtotheliftcylinderbutpreventingreturnflowfromtheliftcylindertothereservoir.EnergizingvalveBopensthevalveandallowsflowfromtheliftcylindertothereservoirtherebyloweringtheplow.Seefigure2.Note:theliftcylinderisconnectedtoC3.

DirectionalValves‘A’,‘C’&‘D’ DirectionalValves‘A’,‘C’and‘D’are3way,2positionspoolvalves.DirectionalValve‘C’operatestheliftcylinderonC3port(SeeFigure1).DirectionalValves‘A’and‘D’operatetheleftandrightanglingcylinders.Valve‘A’operatestheanglingcylinderontherightsideofvehicleonC2port(SeeFigure3).Valve‘D’operatestheanglingcylinderontheleftsideofvehicleonC1port(SeeFigure4). Inthede‐energizedposition,thevalvesblockflowfrompumptothecylinderbutallowreturnflowfromthecylindertothereservoir.Intheenergizedposition,flowfromthepumptothecylinderispermittedbutflowfromthecylindertothereservoirisnot.Note:Whenanglingtheplow,onecylinderisextendingandtheotherisretractingthereforeonecylinderisreceivingoilfromthepumpandtheotherisreturningoiltothereservoir.Valves‘A’and‘D’mustworktogether. Crossoverreliefvalve Thecrossoverreliefvalvesareprovidedtoprotectthevalvesandmanifoldfromthepressurespikescreatedwhentheplowstrikesanobject.Thecrossoverreliefvalvesaresimilarinconstructiontoaregulardirectactingreliefvalve.Crossovervalveswhenactivated,bleedfluidfromC1toC2orviceversa.Inthismannerboththeanglingcylinders,theplowframeandthetruckframeareofferedsomeprotectionfromthenormalimpactforcesassociatedwithplowing.Strikingafixedobjectwhileplowingathighspeedswilldamagethecylindersandperhapstheplow.Thecrossoverreliefvalvesareadjustableandarenormallysetatabout2500psi.PilotOperated(PO)CheckValve Adualpilotoperatedcheckvalve(POCheckValve)isprovidedonportsC1andC2to

Arctic Equipment Manufacturing Corporation R00 M3493 Power Unit holdtheplowatthedesiredangle.WithoutthePOCheckvalves,leakagethroughdirectionalvalves‘A’and‘D’wouldallowtheplowtodrift. Withoutpilotpressure,apilotoperatedcheckvalve(POcheckvalve)allowsflowinonlyonedirection.Inthefreeflowdirection,oilflowingthroughthevalveliftsthepoppetoftheseat.Intheoppositedirection,returningoilpushesthepoppetagainsttheseattherebyblockingflow.Whenpressureisappliedtothepilotpiston,thepoppetisliftedofftheseatandflowinbothdirectionsispermitted.Whenangling,pilotpressureisprovidedforthecheckvalvereturningoiltothereservoir.Forexample;whenvalve‘D’isenergizedpumpflowsoiltoC1.OilisallowedtoreturnoilthroughthecheckvalvetothereservoirbecausethepressureonC1isactingonthepilotpistonoftheC2POCheckValve.ControlSwitch TheM3493usesfourdifferentcontrolboxes:controlboxwithrockerswitches,touchpadcontrolbox,handheldcontrollerandjoystickcontrolbox.Eachcontrolboxperformssamefunctions:up,down,angleleftandangleright.

138 BAR2000 PSI

172 BAR2500 PSI

172 BAR2500 PSI

3-OUTLET PORTS1/4-18 NPT REF

C2C3

C

A D

B

1.98 CC/REV0.121 IN3/REV

C1

SCHEMATIC

M

FC.062 DIA

X1

X2

P

1/4-18 NPT REF

T

1/4-18 NPT REF

M3493 Low & Hi Lift Frame

M3493 installation instructions

(one piece harness and multiplexing installation) (it requires light kit 800084 or 800085 or 800086)


M3493 installation instructions

Warning:

- Top of battery needs to be protected. If positive side of battery is accidentally grounded person could be burnt or wiring system can be damaged, or battery gasses could explode causing injuries.

- Disconnect cable from negative battery terminal before starting installation.

- Always wear eye protection and protective clothing when working around hydraulic systems.

- Remove jewelry and objects that might conduct electricity while working on power units.

- Fluid under pressure can pierce the skin and enter the bloodstream causing death or serious injury.

- Hydraulic hoses and electrical cables (harnesses) must be tied and routed safely to avoid any damage and

pinching (away from hot places, sharp objects etc.).

Note: Do not use Teflon tape on hydraulic fittings as it can easily jam valves and plug the filters

in the system. Use of fluid other than J13 will void warranty. Apply dielectric grease to all connections to prevent corrosion.

Read also one piece harness installation / Multiplexing installation instruction before proceed with installation bellow. For electrical installation see: one piece harness installation or multiplexing installation Hydraulic Installation: 1. Install hoses and fittings as per diagrams and pictures below. 2. Remove vent cap and fill reservoir with UNIVIS J13 (HVI 13) hydraulic oil. Do not use

automatic transmission fluid in this system as it may lead to aeration of the oil in very cold weather conditions. Use of fluid other than J13 will void warranty.

3. Manually angle one section of the blade to one side (Curb side (CS)) before activating

the power unit. Tighten hose – the fitting on the Curb Side cylinder. The hose connection on the Driver Side cylinder must be loose (to let air out). Press the

controller and angle the blade all the way to the Driver Side. Tighten hose – the fitting on the Driver Side cylinder. Fill up the reservoir, so that oil level is 1/2” from the top of the reservoir, and angle the blade to the curb side.

Move, operate, the blade up and down, left and right and refill it up as necessary.


Power Unit Kit 53619-M, M3493 - Low Lift Frame (no harnesses) Part# Description Quantity 1 M3493 M3493 Power Unit 1 2 53476-B 18" Cable Plug Assembly 1 3 53477-B 90" Ground Cable (Black) 1 4 53478-B 90" Power Cable (Red) 1 5 53420-C Power Unit Cover 1 6 CS150-06.00-NRS 1.1/2"X6" Lift Cylinder 1 7 51904-M 29" Hose Assembly 3 8 53419-M-BB Bolt Bag 1 9 51335-56-M Battery Cable, 56” 1 10 51335-22-M Battery Cable, 22” 1 11 53608-N Circuit Breaker, Fuse 135 AMP 1

Bolt Bag, 53419-M-BB Part# Description Quantity

12 52427-N Red Terminal Protector 1 13 53560-A Dummy Plug (Power & Ground) 1 14 52700-N Grommet 1/8x2.1/8x2.7/8 2 15 490056-01 Dielectric Grease 1 16 HH-00790-002 90 Deg Swivel Elbow 2 17 HH-00794-003 1/4" Fitting 1 18 HH-00293-006 1/4-20x1 HHCS 1 19 HH-00294-001 1/4-20 Hex Nut 1 20 HH-00457-006 1/4 Lockwasher 1 21 HH-00293-049 3/8-16x1 HHCS 2 22 HH-00457-004 3/8 Lockwasher 2 23 HH-00293-026 5/16-18x3/4 HHCS 1 24 HH-00457-007 5/16 Lockwasher 1 25 HH-00341-004 3/8 Flatwasher 2 26 HH-00455-007 #8x3/4 Screw 4

Power Unit Kit 53620-M, M3493 - Hi Boy Lift Frame (no harnesses) Part# Description Quantity 1 M3493 M3493 Power Unit 1 2 52870-C-GA Pump Plate 1 3 52429-C Cover 1 4 53476-B 18" Cable Plug Assembly 1 5 53477-B 90" Ground Cable (Black) 1 6 CS150-06.00-NRS 1.1/2"X6" Lift Cylinder 1 7 51904-M 29" Hose Assembly 2 8 51905-M 36" Hose Assembly 1 9 53478-B 90" Power Cable (Red) 1


10 52431-M-BB Bolt Bag 1 11 51335-56-M Battery Cable, 56” 1 12 51335-22-M Battery Cable, 22” 1 13 53608-N Circuit Breaker, Fuse 135 AMP 1

Bolt bag 52431-M-BB (M3593 Hi Boy ) Part# Description Quantity 14 52436-N Grommet 1/4"X1.3/4x2.1/2 2 15 HH-00293-006 1/4-20x1 HHCS 1 16 HH-00790-002 90 Deg Swivel Elbow Fitting 2 17 HH-00794-003 1/4" Pipe To Pipe Fitting 1 18 HH-00340-017 5/16-18 Nyl. Ins. 4 19 HH-00341-004 3/8” Flatwasher 2 20 HH-00457-004 3/8” Lockwasher 2 21 HH-00294-001 ¼”-20 Hex Nut 1 22 HH-00457-006 ¼” Lockwasher 1 23 HH-00455-007 #8x3/4 SQ. DR. PAN 4 24 490056-01 1/2 Oz Tube Dielectric Grease 1 25 HH-00293-049 3/8-16x1 HHCS 2 26 HH-00971-043 5/16-18x1 Carriage 4 27 53560-A Dummy Plug (Power & Ground) 1 28 52427-N Red Terminal Protector 1 29 52700-01-N Grommet 1/8 x 3 x 3.625 1 30 HH-00293-028 5/16”-18 x 1 HHCS 1 31 HH-00457-007 5/16” Lockwasher 1

Arctic Equipment Manufacturing Corporation reserves the right under its product improvement policy to change construction or design details and furnish equipment when so altered without reference to illustrations or

specifications used.

One piece harness installation

Page 1 www.arcticsnowplows.com

One piece harness installation instructions (it requires light kit 800084,800085 or 800086)



Installation instructions

Warning:


- Disconnect cable from negative battery terminal before starting installation. - Always wear eye protection and protective clothing when working around hydraulic

systems. - Remove jewelry and objects that might conduct electricity while working on power units. - Fluid under pressure can pierce the skin and enter the bloodstream causing death or serious

injury. - Hydraulic hoses and electrical cables (harnesses) must be tied and routed safely to avoid

any damage and pinching (away from hot places, sharp objects etc.). -When drilling mounting holes or using self-tapping screws in the engine compartment, be

sure to check the mounting location for any wires, hoses other obstructions that could be damaged during installation.

Note: Apply dielectric grease to all connections to prevent corrosion.

1. Install the power unit that the motor is facing toward driver’s side of truck. Secure the power unit to the back of pump plate using 3/8” bolt and lockwasher (26)(27) ( apply removable grade Loctite to 3/8” bolts to fasten power unit to the pump plate).

Install Pump Plate using 5/16” carriage bolts.

If M3493 is installed On Hi Boy Lift frame, install spacer plate and secure it with ¼” bolt.



2. Install red terminal protector (14) on cable and plug assembly (7). Attach red lead of the cable and plug assembly to positive motor stud and black lead to the pump base using 5/16” bolt (19)(20). Liberally coat connections with dielectric grease then slide cover over the eye on the end of the cable.

3. Install lights on a lift frame (21)(22)(23) and route a light harness inside of power unit

housing. (using cable ties secure light harnesses to the lift frame)



4. Install the lift frame harness (5), inserting through the curb side opening in the pump plate and security it to the pump plate at the back. Bring the harness toward driver side.

4. Plug the light harnesses to the lift frame harness (5) and secure them under the pump

cover. Attach the power unit leads from the lift frame harness (5) to the coils. (Drawing 3,4,5)

5. Mount solenoid (10) and relays (1) to metal surface close to the driver (as show on the

picture) bending bracket if necessary. NOTE: Solenoid must be well grounded in order to function properly. (Drawing 1)



6. Slide Dummy Plug (15) over power cable (9) and ground cable (8) and route through grille of truck leaving sufficient length to attach to the cable and plug assembly (7). Secure the red power cable (9) to the large terminal on the solenoid and the black ground cable (8) to the negative terminal on the battery. (Drawing 1)

6. Install power cable 22” (12) from the positive side of battery to one of the terminal of

135 AMP circuit breaker (13). Install 56” power cable (11) on the second terminal end on the circuit breaker terminal and to the large terminal on the solenoid (10). When installing the circuit breaker locate a flat surface suitable for mounting. Choose surface that is clear of moving parts and extreme heat. The firewall or fender are possible mounting locations. Use ¼” bolts and locknuts. If an acceptable flat surface is not available, cable tie the circuit breaker securely to a harness or an existing bracket. Note: Make sure that chosen location is in a spot that will allow the power cables to reach their destination (Drawing 1).

7. For the underhood harness (4) locate a pass through hole in the firewall near the driver’s

side of the truck. Route the harness through the hole in firewall and attach to the intermediate in cab harness and to the 12 pole light switch (2) (secure the light bracket to the dash). Intermediate harness in cab harness must be secured under the dash and it should be attached to control station.

8. Connect wires on the solenoid (10) as shown on Drawing 1. 9. Neatly secure all excess cables and wires using tie straps. Silicone hole in firewall.

Note: Be sure all cables are properly protected from any sharp edges or hot or moving parts!!

18. For hydraulic install refer to Hydraulic Installation section.



One piece harness installation (parts can be found in kit part # 53617-M and pump kit) Part# Description Quantity 1 800041 Relay 2 2 184069-12 12 Pole Light Switch Kit 1 3 52018-M Light Switch Bracket Kit 1 4 53470-B One Piece Harness 1 5 53624-B Lift Frame Harness 1 6 M3493 M3493 Power Unit 1 7 53476-B 18" Cable Plug Assembly 1 8 53477-B 90" Ground Cable (Black) 1 9 53478-B 90" Power Cable (Red) 1 10 FP17757 Solenoid 1 11 51335-56-M Battery Cable, 56” 1 12 51335-22-M Gauge Battery Cable, 22” 1 13 53608-N Circuit Breaker 1 14 52427-N Red Terminal Protector 1 15 53560-A Dummy Plug (Power & Ground) 1 16 HH-00293-006 ¼”-20x1 HHCS 1 17 HH-00294-001 ¼”-20 Hex Nut 1 18 HH-00457-006 ¼” Lockwasher 1 19 HH-00293-026 5/16”-18x3/4 HHCS 1 20 HH-00457-007 5/16” Lockwasher 1 21 800084 Sealed Beam AXV light Kit 1 22 800085 Single Bulb Head light Kit 1 23 800086 Dual bulb head light kit 1 24 FPN0455-1PC Controller comes with adapter 53474-B 1 25 FPN0478-1PC Touchpad comes with adapter 53474-B 1 26 52388-1PC Large Joystick comes with adapter 53474-B 1 27 52405-1PC Large Joystick & window bracket, comes with adapter

53474-B 1

28 52382-1PC Handheld Controller comes with adapter 53474-B 1 29 53326-1PC V Blade Handheld Controller comes with adapter

53473-B 1

30 53495-1PC Wing blade Handheld Controller comes with adapter 53487-B

1



Lights Installation (refer to Drawing 1 & 2)

1. Snow Plow Lamps should be mounted in the desired location on the snowplow frame ensuring that the snow plow lamp beams are not obstructed by any portion of the plow or vehicle.

2. WIRING INSTALLATION - Refer to diagram

NOTE: Prior to lamp/harness assembly, please apply provided lithium grease to snowplow lamp plugs on under hood harnesses, ensuring all connections are thoroughly covered. Neglecting to grease plugs will drastically reduce operating life of plow lamps/harnesses and will void manufacturer’s warranty.

a) Plug a headlamp harness adapter leads from conversion kit (if required) into sealed beam connectors the wiring harnesses (53470-B).

b) Plug above assemblies into vehicle lamps.

c) Plug power harness adapter leads from conversion kit (if required) into matching 3 prong plug on a wiring harnesses (53470-B).

d) Plug above assemblies into OEM harnesses removed from vehicle lamps.

e) Referring to wiring diagram, complete wiring connections of turn signal and parking lights to vehicle's electrical lighting system using Quick-Splice connectors included in bagged parts.

f) Drill a hole in the firewall at the most convenient location (driver side). Apply a silicone in the drilled hole to protect wire insulation.

g) Pull wire harnesses through firewall from the engine compartment into the cab.

h) Referring to wiring diagram, connect 6 female tab connectors (x2) to twelve pole switch as shown below.

i) Select suitable location on dash to mount the toggle switch and drill 15/32" diameter hole through the dashboard or secure the light bracket to the dash and install the toggle switch through hole in the light bracket.

j) Apply switch identification label to dash or the light bracket by removing protective backing from label and pressing label over switch hole. Make sure switch is positioned with respect to label so that snowplow lamps are "ON" when toggle switch is in the upper position.

k) Remove knurled nut from the toggle switch; insert the switch through the drilled hole or through light bracket hole and re-install the knurled nut. Tighten nut securely.



3. Check for proper operation. Turn on headlight switch and check that with toggle switch in lower position, only the vehicle headlamps are on. With toggle switch in upper position, only the snowplow headlamps should be on. Dimmer switch should select high and low beams on both headlamps. Turn signal lamps should be on in same sequence and at same time as vehicle turn signal lamps. Parking lamps should be on at same time as vehicle parking lamps. If any lamp does not operate correctly, re-check wiring against wiring diagram and make necessary corrections in wiring hookup. Adjust the plow lamp beams to project the same distance ahead of the vehicle as compared to the original headlights.

4. Installer of these snow plow lamps must certify that installation conforms to applicable Federal Motor Vehicle Safety Standards.

NOTE: Daytime Running Lights will work on both plow and truck lights.

Arctic Equipment Manufacturing Corporation reserves the right under its product improvement policy to change construction or design details and furnish equipment when so altered without reference to illustrations or specifications used.

MPX installation


Multiplexing system installation (it requires light kit 800084,800085 or 800086)

MPX installation


Installation of Multiplexing System

Warning:


- Disconnect cable from negative battery terminal before starting installation. - Always wear eye protection and protective clothing when working around hydraulic

systems. - Remove jewelry and objects that might conduct electricity while working on power units. - Fluid under pressure can pierce the skin and enter the bloodstream causing death or serious

injury. - Hydraulic hoses and electrical cables (harnesses) must be tied and routed safely to avoid

any damage and pinching (away from hot places, sharp objects etc.). -When drilling mounting holes or using self-tapping screws in the engine compartment, be

sure to check the mounting location for any wires, hoses other obstructions that could be damaged during installation.

Electrical installation of MPX system 1. For Low Lift Frame M3493, first install plow antlers, braces and lights. For the curb side brace, insert the bottom ½” bolt from inside (only on the curb side) - see the pictures below.

MPX installation


2. Install the module on the bracket and attach the lift frame harness to the module. Install the pump plate on Hi Boy, with bolts inserted as show on the picture. 3. Install the module bracket inside of pump housing using 2 x 5/16” bolts, flat-washers and nuts. M3493 Low Lift Frame Hi boy Lift Frame

MPX installation


4. Install lights. Using cable ties secure the light harness to the lift frame. Insert the light plugs into the pump cover housing. 5. Install the power unit and secure it with 2 x 3/8” bolts and lock washers – using holes on the back side. (apply removable grade Loctite to 3/8” bolts to fasten power unit to the pump plate).

If M3493 is installed on High Boy install the spacer plate using ¼” bolt and nut.

MPX installation


6. Install red terminal protector on cable and plug assembly (7) . Attach red lead of the cable and plug assembly to positive motor stud and black lead to the pump base using 5/16” bolt (19)(20). Liberally coat connections with dielectric grease then slide cover over the eye on the end of the cable. 7. Secure the lift frame harness and bring it toward the driver side.

MPX installation


8. Plug the light connectors inside of the pump cover and secure them using zip ties. Connect the lift frame leads to the coils (see Drawing 3, 4 & 5) 9. Mount the solenoid (16) to metal surface close to the driver (as show on the picture) bending bracket if necessary. NOTE: Solenoid must be well grounded in order to function properly. (see Drawing 1) 10. Slide a dummy plug over power cable (15) and ground cable (14) and route through grille of truck leaving sufficient length to attach to the cable and plug assembly (13). Secure the red power cable (15) to the large terminal on the solenoid and the black ground cable (14) to the negative terminal on the battery. (see Drawing 1) 11. Install power cable 22” (18) from the positive side of battery to one of the terminal of 135 AMP circuit breaker (19). Install 56” power cable (17) on the second terminal end on the circuit breaker terminal and to the large terminal on the solenoid (10). When installing the circuit breaker locate a flat surface suitable for mounting. (see Drawing 1 below) Choose surface that is clear of moving parts and extreme heat. The firewall or fender are possible mounting locations. Use ¼” bolts and locknuts. If an acceptable flat surface is not available,

MPX installation


cable tie the circuit breaker securely to a harness or an existing bracket. Note: Make sure that chosen location is in a spot that will allow the power cables to reach their destination (see drawing). 12. For the underhood harness (1) locate a pass through hole in the firewall near the driver’s side of the truck. Route the harness through the hole in firewall and attach to the controller. Install the light adapter harness (29). For installation of these two harnesses refer to Drawing 2. See section below for Installation of Vehicle Harness RED/WHITE (ignition) wire.

Installation of Vehicle Harness RED/WHITE (ignition) wire

Connect the RED/WHITE wire to a “keyed” 12V+ ignition source. Note: This 12V+ source should only be active when the key is in the ON position. Failure to wire to a “keyed” source can allow a condition to occur causing the battery to drain. This will also prevent operation of the plow without the vehicles key being on.

To find a “keyed” 12V+ ignition source, consult the fuse panel section of the vehicles owner’s manual. Look for a fuse labeled ACC/IGN or ACC (Accessory). Remove the fuse, apply the fuse tab as shown below and reinstall the fuse. The RED/WHITE ignition wire can now be plugged to the ¼” fast-on tab.

Note: Check to make sure that the snowplow control ONLY has power when the vehicle ignition switch is ON.

If NO accessory fuse is available, a test light may have to be used to determine if power to a certain fuse (or any other power source) is “switched / keyed” or not.

Note: The RED/WHITE ignition wire is equipped with its own 10 amp fuse, so it can be tapped to any size fuse (10 or above). Do not use two taps on the same fuse.

13. Neatly secure all excess cables and wires using tie straps. Silicone hole in firewall.

Note: Be sure all cables are properly protected from any sharp edges or hot or moving parts!!

MPX installation


14. When the plow is not attached to the truck, plug the end connectors to each other to avoid the corrosion (on both sides, plow and truck side).

15. For hydraulic install refer to Hydraulic Installation section.

Lighting System Procedure

To avoid corrosion, extend the life of the control module & ensure proper plow functionality keep all connectors well-greased with dielectric grease. Basic Lighting Transfer Overview: To transfer the lights from the vehicles headlights to the plow lights, the Control Module Electrical System installed on your vehicle must see or read four things. 1.) The vehicles ignition is turned ON. 2.) The vehicles headlight switch is turned ON. 3.) The plow is plugged in (by the vehicles grill). 4.) The plow control (in the cab) is plugged in and turned ON. Note: Keep in mind that turning the vehicles ignition OFF, acts as a RESET for the lighting system. Below is a set of three Conditions that may help to better explain the transfer of lights from vehicle to plow: **When the vehicles ignition is turned OFF, the entire snowplow system is OFF. (Note: If this is not correct, see the plows installation instructions for proper plow installation). Condition #1: The vehicle’s ignition is turned ON, the plow is NOT attached (and NOT plugged in) and the plow control is OFF (or not plugged in). When turning ON the vehicles headlight switch, the vehicles headlights will turn ON.

MPX installation


Condition #2: The vehicles ignition is turned ON, the plow is attached (and plugged in) and the plow control is OFF (or not plugged in). When turning ON the vehicles headlight switch, the vehicles headlights will turn ON. WARNING: If the plow was already raised when the ignition was turned ON, turning ON the vehicles headlight switch will only turn ON the vehicles headlights. It is NEVER recommended to drive a vehicle with a plow using only the vehicles headlights. Once the vehicle ignition is ON and the vehicles headlights are ON, If you turn the plow control ON, the vehicles headlights will turn OFF (transfer) and the plow lights will turn ON. Note: From this point on, the plow control can be turned OFF (Recommended while driving on road/Not plowing) and ON as needed by the operator and the plow lights will remain ON. Turning OFF the ignition will reset the lighting system back to **. Condition #3: The vehicles ignition is turned ON, the plow is NOT attached (and NOT plugged in) and the plow control is plugged in and ON. When turning ON the vehicles headlight switch, the vehicles headlights will turn ON. Note: When the plow is not attached to the truck, for safety, the control should be turned OFF or unplugged. This locks the lights to vehicle lights only. During this condition (ignition ON, plow control ON), plugging in the plow (attached or not) will transfer the lights from the vehicle to the plow lights. Then, unplugging the plow will transfer the lights from the plow to the vehicle lights.

MPX installation


MPX installation (parts can be found in kit part # 53618-M and pump kit) Part# Description Quantity 1 53625-MPX Under Hood MPX Harness 1 2 53627-MPX MPX Lift Frame Harness 1 3 800080-MPX MPX Control Module Box 1 4 53615-N 3/16” Mini Fuse Tap 1 5 HH-00141-029 10-32x3/4 bolt 4 6 HH-00540-100 10-32 Nut, Nylon Insert 4 7 53614-N 1/4" Fuse Tab 1 8 761354 1/4" Female Connector 1 9 HH-00293-028 5/16”-18 x1” HHCS 2 10 HH-00340-017 5/16”-18 Nut, Nylon Insert 2 11 HH-00341-003 5/16” Flat washer 2 12 53626-M MPX Module Bracket 1 13 53476-B 18" Cable Plug Assembly 1 14 53477-B 90" Ground Cable (Black) 1 15 53478-B 90" Power Cable (Red) 1 16 FP17757 Solenoid 1 17 51335-56-M Battery Cable, 56” 1 18 51335-22-M Gauge Battery Cable, 22” 1 19 53608-N Circuit Breaker 1 20 HH-00293-006 ¼”-20 x1” HHCS 1 21 HH-00294-001 ¼”-20 Hex Nut 1 22 HH-00457-006 ¼” Lock-washer 1

23 800084 Sealed Beam AXV Light Kit 1 24 800085 Single Bulb Head Light Kit 1 25 800086 Dual Bulb Head Light Kit 1 26 53282-MPX Handheld Controller For Straight Blade 1 27 53495-MPX Handheld Controller For Wing Blade 1 28 53326-MPX Handheld Controller for V blade 1 29 - MPX Light Adaptor 1

MPX installation


Multiplexing Light Adapters 1 767054-MPX Bulb # H9005/H9006 / GM (90-07) - 6 Pole "Classic" 2 767042-MPX Bulb # H9004 / Ford(87-91)/Dodge Ram 1500(94-01)/Dodge Ram

2500(94-02) 3 767052-MPX Bulb # H9007 / F150 (92-03)/F250/350/450 (92-04)/Dakota (97-

04)/Ram 1500 (02-05)/Ram2500 (03-05) / Hummer H2 (03-10) 4 800034-MPX Bulb # H13 / Ford F150 (04-10)/F250/F350/F450 (05-14), Dakota (05-

13), Ram 1500/2500 (06-13), GMC Yukon/Denali (07-13) 5 800042-MPX Bulb # H9005/H11 / Chevy Silverado/Tahoe/Avalanche/Suburban (07-

13) / GMC Sierra (07-13), 6 800087-MPX GMC/Chevy 2015 7 800082-MPX Sealed Beam 8 800083-MPX Tundra (07-14) 9 800077-MPX Dodge 1500/2500/3500 2014 +


M3493

Page 1 www.arcticsnwoplows.com

M3493 Installation Instructions

53419-M

(multiple harness installation)

M3493


Warning

- Top of battery needs to be protected. If positive side of battery is accidentally grounded person could be burnt or wiring system can be damaged, or battery gasses could explode causing injuries. - Disconnect cable from negative battery terminal before starting installation. - Always wear eye protection and protective clothing when working around hydraulic systems. - Remove jewelry and objects that might conduct electricity while working on power units. - Fluid under pressure can pierce the skin and enter the bloodstream causing death or serious injury. - Hydraulic hoses and electrical cables (harnesses) must be tied and routed safely to avoid any damage and pinching (away from hot places, sharp objects etc.).

Note: Do not use Teflon tape on hydraulic fittings as it can easily jam valves and plug the filters in the system. Use of fluid other than J13 will void warranty. Apply dielectric grease to all connections to prevent corrosion.

Read also Light installation instruction before proceed with installation bellow 1. Install red weather covers (4) on cable and plug assembly (2). Attach red lead to positive motor stud and black lead to pump base. Liberally coat connections with dielectric grease then slide cover over the eye on the end of the red cable. 2. Install power unit (1) with motor toward driver’s side of truck (secure a power unit to the pump plate using 3/8” bolts on the back-use removable grade Loctite for these bolts also). 3. Route power unit harness through grommet in driver’s side of mounting plate and secure using cable clamp (attached to power unit harness) and ¼” x 1” bolt. 4. Mount solenoid (4) to metal surface in engine compartment, bending bracket if necessary. Be sure to locate the solenoid so that there is sufficient cable to reach to both the battery and the cable and plug assembly (2) on the power unit. NOTE: Solenoid must be well grounded in order to function properly. 5. Slide weather cover (13) over power cable (5) and ground cable (6) and route through grille of truck leaving sufficient length to attach to the cable and plug assembly (2). Secure the red power cable (5) to the large terminal on the solenoid and the black ground cable (6) to the negative terminal on the battery. 6. Secure power cable (7) from other large terminal on solenoid to positive terminal on battery. 7. Plug intermediate harness (8) into power unit harness and follow battery cable routing toward firewall. Locate a pass through hole in the firewall near the driver’s side of the truck. Route other end of intermediate harness (8) through the hole in firewall and attach control station.

M3493


NOTE: A smaller hole in the firewall can be used if the cable is fed into the engine compartment from the cab as the plug at the power unit end is smaller than at the control station end. 8. Attach white wire to ground, black wire to positive side of solenoid and brown wire to small terminal on top of the solenoid (4). Note: Apply dielectric grease to all electrical connections. Assure that all electrical connections are attached and secured properly. 9. Neatly secure all excess cables and wires using tie straps. Silicone hole in firewall. Note: Be sure all cables are properly protected from any sharp edges or hot or moving parts. 10. Install swivel elbows in ports, C1, C2 and C3 as shown on attached drawing. 11. Install two grommets as shown on the drawing. 12. Install hoses as shown on the drawing (secure hose to the pump plate). 13. Remove vent cap and fill reservoir with UNIVIS J13 (HVI 13) hydraulic oil. Do not use automatic transmission fluid in this system as it may lead to aeration of the oil in very cold weather conditions. Use of any fluid other than J13 will void warranty. 14. Manually angle one section of the blade to one side (Curb side (CS)) before activating the power unit. Tighten hose – the fitting on the Curb Side cylinder. 15. The hose connection on the Driver Side cylinder must be loose (to let air out). Press the controller and angle the blade all the way to the Driver Side. Tighten hose – the fitting on the Driver Side cylinder. Fill up the reservoir, so that oil level is 1/2” from the top of the reservoir, and angle the blade to the curb side.

16. Move, operate, the blade up and down, left and right and refill it up as necessary. 17. Apply die electric grease to all coil nuts and electrical connections to prevent corrosion and install power unit cover (9). .

M3493


Power Unit Kit 53419-M Item Part # Description Quantity 1 M3493 M3493 Power Unit 1 2 53476-B Cable and Plug Assembly 1 3 FP17757 Solenoid 1 4 52427-N Red Terminal Protector 1 5 53478-B Power Cable 90” 1 6 53477-B Ground Cable 90” 1 7 51335-22-M 22" Battery Power Cable 1 8 FPN0457-SA Intermediate Harness 1 9 53420-C Power Unit Cover 1 10 HH-00790-002 90 Deg Swivel Elbow 2 11 CS150-06.00-NRS Lift Cylinder 1 ½" x 6" 1 12 HH-00794-003 1/4" Pipe to Pipe Swivel 1 13 0203300 Weather cover for power and ground cable 1 14 52315-N Dummy Plug for intermediate harness 1 15 51904-M Hose Assembly 29" 3 16 52436-N Grommet 2 17 HH-00293-006 1/4-20x1 HHCS 1 18 HH-00294-001 1/4-20 Hex nut 1 19 HH-00457-006 1/4 Lockwasher 1 20 HH-00293-049 3/8-16x1 HHCS 2 21 HH-00457-004 3/8 Lockwasher 2 22 HH-00293-026 5/16 x ¾” HHCS 1 23 HH-00457-007 5/16 Lockwasher 1


Arctic Equipment Manufacturing Corporation R00 M3493 Power Unit (2012+)

M3493 Power Unit Parts List (2012+) Part # Description Qty

1 FP8111-I Motor, 12 VDC 1 2 FP2159 Pump Shaft Seal 1 3 FP7985 Needle Bearing (Pump Shaft to Pump Base) 2 4 FP21115 Pump base assembly, M3493 1 5 FP2318 Bearing, Motor to Pump Base 1 6 FP6102 Reservoir, Plastic 1 7 FP21812 Manifold assembly 1 8 FP21811 Manifold only 1 9 FP1209 Suction tube 1 10 FP13058 Return tube 1 11 FP1134 Suction filter 1 12 FP0118 O-ring, 5/8 x ¾ x 1/16, -016 2 13 FP0490-D Valve, #8 2W / 2P, valve assembly (14,15) 1 14 FP10861-D Coil #8 2W / 2P, 1 15 FP10907-D Valve, cartridge, 2W/2P 1 16 FP7249-D Valve, #8, 3W / 2P, valve assembly (17,18) 3 17 FP18835-D Coil, 12VDC, 3W/2P 1 18 FP0679-D Valve cartridge, 3W / 2P 1 19 FP7217 Check Valve 2 20 FP7218 Piston 1 21 FP7526 Check valve kit 1 22 FP7527 Relief valve kit 1 23 FPN0571 Breather 1 24 FP12171-250-SA Pump assembly kit 1 25 FPN0670 Harness valve section 1 26 FPN0457-SA Harness center section 1 27 FPN0455-SA Control station, rocker switch 1 28 FPN0478-SA Control station, touch pad 1 29 52388-M Large joystick 1 30 FP17757 Solenoid, switch 1 31 53220-N Plug, SAE #4 (7/16”) 1 32 53282-N Handheld controller 1 33 53185-N Small joystick 1 34 FP7900 Clamp (torque up to 80inlb) 1 35 FP2361 Orifice 1/16” 1 36 FP0120 O-ring, 1/2 x 5/8 x 1/16, -014 1 37 FP2352 O-ring, 3 3/4 x 4 x 1/8, -240 1 38 FP7732 Screw, spring retainer 9/16” -18 1 39 FP0130 Spring 1 40 FP18391 Poppet 1 41 FP13023 Cross over relief valve assembly 2 42 FP7899 Screw 1

Arctic Equipment Manufacturing Corporation R00 M3493 Power Unit (2012+)

M3493 Power Unit Parts List (2012+) Part # Description Qty

43 FP0386 Sealing nut 1 44 FP0147 Spring 1 45 FP1288 Plate 1 46 FP0379 Housing 1 47 FP0114 O-ring 1 48 FP0012 Ball 1 49 FP0378 Seat 1

Arctic Equipment Manufacturing Corporation R00 M3493 Power Unit (2011-2012)

M3493 Power Unit Parts List for (2011-2012) Part # Description Qty

1 FP8111 Motor, 12 VDC 1 2 FP2159 Pump Shaft Seal 1 3 FP7985 Needle Bearing (Pump Shaft to Pump Base) 1 4 FP21115 Pump base assembly, M3493 1 5 FP2318 Motor to Pump Base Bearing 1 6 FP6102 Reservoir 1 7 FP20752 Manifold assembly 1 8 FP20751 Manifold only 1 9 FP1209 Suction tube 1 10 FP13058 Return tube 1 11 FP1134 Suction filter 1 12 FP0118 O-ring, 5/8 x ¾ x 1/16, -016 2 13 FP0490-D Valve, #8 2W / 2P, valve assembly (14,15) 1 14 FP10861-D Coil #8 2W / 2P, 1 15 FP10907-D Valve, cartridge, 2W/2P 1 16 FP7249-D Valve, #8, 3W / 2P, valve assembly (17,18) 3 17 FP18835-D Coil, 12VDC, 3W/2P 1 18 FP0679-D Valve cartridge, 3W / 2P 1 19 FP7217 Check Valve 2 20 FP7218 Piston 1 21 FP7526 Check valve kit 1 22 FP7527 Relief valve kit 1 23 FPN0572 Breather 1 24 FP12171-250-SA Pump assembly kit 1 25 FPN0670 Harness valve section 1 26 FPN0457-SA Harness center section 1 27 FPN0455-SA Control station, rocker switch 1 28 FPN0478-SA Control station, touch pad 1 29 52388-M Large joystick 1 30 FP17757 Solenoid, switch 1 31 53220-N Plug, SAE #4 (7/16”) 1 32 53282-N Handheld controller 1 33 53185-N Small joystick 1 34 FP7900 Clamp 1 35 FP4371 Orifice 1

Valves 2 way /2 position (2w/2p) cavity (O-ring) change

1. Power units manufactured prior to 2010

Typically manufactured with "Monarch-style" valve cavity, identifiable by:

a) Cavity without identification mark (without Greek letter delta (triangle)) (see picture 1)

b) Black O-ring, with 0.070" cross-section (see picture 3)

2. Units manufactured in 2010 and beyond

Typically manufactured with "Industry standard" valve cavity, identifiable by:

a) Cavity with identification mark - Greek letter delta (triangle) (see picture 2)

b) Blue O-ring, with 0.087” cross-section (see picture 3)

Valve replacement

a) Cavity and O-ring must be selected correctly for proper sealing function, the rest of the valve is the same. If necessary, replace O-ring with the proper O-ring to match the valve cavity:

b) Cavity without identification mark requires black O-ring, with 0.070" cross-section (see picture 3)

c) Cavity with identification mark requires blue O-ring, with 0.087” cross-section (see picture 3)

Picture 3

Picture 2 Picture 1


Troubleshooting flow chart for power unit M3493 Safety and warnings Servicing the snowplow (hydraulic power system, hoses, hydraulic cylinders, controllers, wiring harnesses, lights, blade frame, blade moldboard, A-frame, quadrant, lift frame and vehicle undercarriage) without special tools and knowledge could result in personal injury. See an authorized Arctic dealer for service. -Fluid under pressure can pierce the skin and enter the bloodstream resulting in serious injury or death. -Eye protection and protective clothing must be worn when working on any portion of the snowplow. -Remove any jewellery (rings, bracelets, watches, necklaces) that could conduct electricity while working with electrical system. -Lifted blade should be securely propped or immobilized while working on it or any other suspended part so it cannot fall. -Do not operate blade when anyone is within a 10 foot radius of it. -Use of any fluid other than J13 will void warranty Tips -Pump shaft can be turned freely (smoothly) using two fingers. If it can’t be turned replace pump. Proper pump rotation is clockwise looking from the motor end. -Use a screwdriver to check magnetism of solenoid coils. Place screwdriver on the nut securing the coil and have the switch operated. Strong magnetic attraction should be felt. -Measure pump pressure at an angle hose (at full angle) it has to be 2000 psi (assuming that cross over relief valve setting is 2500 psi, if X-over relief valve setting is less than relief valve setting pressure gage will read lowest reading). The most accurate reading of system pressure is reading pressure on lift cylinder. When testing or making adjustments on the relief valve the system must be “dead headed” (cylinder at full stroke or in a position where cylinder movement is zero). -AMP draw of motor should be measured at maximum raise or maximum angle when motor is running at 2000 psi. -Use volt meter or test light to test for power in a harness or continuity in a switch. A test light is simply a light bulb which has one end connected by a wire to an alligator clip and the other end connected to a metal probe. It is used to check the electrical circuit when the battery is connected to the system. The alligator clip is grounded and the light glows when the probe comes in contact with a “live” electrical component.

Arctic Equipment Manufacturing Corporation R00 M3493 Power Unit -Do not screw cartridge valves into cavity too fast; use a back and forth motion and have O-rings well lubricated. -Clean all parts thoroughly before assembly and lubricate with clean oil. -Do not use Teflon tape on hydraulic connections as it can easily jam the valves and plug the filters in the system, use pipe sealant. Never apply pipe sealant at the end of fitting, always 2- 3 threads back. -X-over pressure could be set using hand (hydraulic) pump. Example: If you want to set the pressure at x-over X1 insert hand pump hose in the C1 port together with pressure gauge. Loosen the jam nut and turn adjusting screw clockwise a turn or two and watch the gauge; if it goes up, continue to turn the screw until the required setting is reached. Retighten the jam nut. To set X-over X2 repeat the same steps as setting X1. To adjust relief valve: -Loosen jam nut counter-clockwise. Turn screw clockwise to increase pressure or turn screw counter-clockwise to decrease pressure. Tighten jam nut clockwise to 50in.lb. torque. Check system pressure after jam nut is tight. Readjust pressure if screw is moved during tightening of jam nut. Specification: -Max Amp Draw 220 AMP (AMP draw of motor should be measured at maximum raise or maximum angle when motor is running at pressure setting at 2000 psi). Note: Do not operate motor continuously for more than 30 sec. -Relief valve setting 2000 psi. -X-over relief valve setting 2500 psi. -Troubleshooting tips - Motor does not operate. - Motor operates continuously - Snow plow does not raise. - Snow plow raises up very slowly. - Snow plow will not lower. - Snow plow leaks down. - Snow plow angles before going up when up switch is pressed. - Snow plow when is fully angled going up when angle switch is pressed. - Snow plow does not angle to right. - Snow plow does not angle to left. Note: Quick couplers are an optional item. If unit is not equipped with quick couplers, disregard troubleshooting steps involving them.


NoYes

Yes NoNo

No

Yesyes

NoNo

Yes

NoNo

YesYes

Yes

No

Yes

Is there power at the positive motor stud?

Remove motor. Will it run when 12V is applied?

Is pump shaft seized?

Replace pump.

Repair (check brushes)/ replace motor.

Is there good ground connection?

Clean and tighten all connections.Electrical connections must be free of corrosion and tight.

Is there power on the motor terminal of solenoid, when switch is activated (up or angling)?

Is there power leaving switch (control box)?

Are harnesses (connectors) plugged in each other properly?

Repair/ replace intermediate (center) harness.

Is the fuse (10 amp)OK?

Replace switch (control box).

Replace fuse (check for a short in harness/ motor/ switch)

MOTOR DOES NOT OPERATE M3493

Check that solenoid is grounded. If there is good ground connection to solenoid and motor does not operate, replace solenoid . Hint: If you do not hear"click" sound from solenoid when up, left or right switch is pressed, replace solenoid (assuming there is good ground connection to solenoid).

Is there power to control terminal wire (brown wire) when switch is activated (up or angling)? Is battery charged?

Are all connections from (motor/ solenoid) clean and tight?

Clean and tighten all electrical connections.

MOTOR OPERATES CONTINUOUSLY M3593

If motor operates continuously, change solenoid.

Battery terminals and all electrical connections must be free of corrosion and tight. Charge battery.Is there power to control terminal wire?

For Multiplexing issues please contact Arctic Equipment.


No Yes

No

YesYes

No

No Yes No

NoYes No Yes

No Yes

Yes No Yes

No

Yes No

No

Yes

No

YesYes

No

Does plow raise up?

Is fluid level 3/4" below filler hole?

Add UNIVS J13 oil.

Is there pressure in angle cylinder port when angle switch is pressed? (Use pressure gauge)(Hint:Check relief valve condition.)

Is motor turning in proper direction?

Repair/replace motor.

Adjust relief valve to 2000 psi. Can it be done?Using a gauge in the pressure line, loosen the jam nut and turn adjusting screw clockwise a turn or two and watch the gauge; if it goes up, continue to turn the screw until the required setting is reached. Retighten the jam nut.

Does pump shaft turn freely?

Does the motor armature turn tightly?

Replace pump. Repair/ replace motor.

SNOW PLOW DOES NOT RAISE M3493

Is there power leaving switch (control box) ?


Is there power in each harness?

Are harness connectors plugged into each other properly?

Repair/replace harness that does not have power.

Is there power to C coil (blue wire)

Replace C valve cartridge.

Replace C valve coil.

Is suction filter plugged?

Replace pump.

Replace suction filter.Change oil and flush system. Is there

Is there magnetism on C coil.

Does the motor operate when up switch is pressed?

See chart - Motor does not operate.

Does motor operate when angle switch (left/right) is pressed?

Replace switch or replace control box.


No Yes

No

YesNo

No No

Yes YesYes

No

No Yes

No

No

No


Clean/replace PO check valve (CV1 & CV2, and a piston) . Does it angle to right

Clean/replace cross over relief valves. Check setting 2500 psi. Does it angle to right side?

Does A coil (green wire) have magnetism?

Is there power to A coil (green wire)?





Replace A coil.

SNOW PLOW DOES NOT ANGLE TO RIGHT SIDE M3493

Replace A cartridge valve. Does it angle to right side?

Check for a bent or seized cylinder.

Change D cartridge valve. Does it angle to right side?

Does the motor operate when angle switch is pressed?


Does motor operate when up switch is pressed?


Yes

No

No Yes

YesNo

Yes

Yes

Does plow raise up

Is fluid level 3/4" below filler hole? Add UNIVS J13 oil.

Replace C cartridge valve.

Adjust relief valve to 2000 psi. Can it be done?Using a gauge in the pressure line, loosen the jam nut and turn adjusting screw clockwise a turn or two and watch the gauge; if it goes up, continue to turn the screw until the required setting is reached. Retighten the jam nut.(Hint:Check relief valve condition.)

Does pump shaft turn freely?

Replace pump.Clean/ replace suction filter. Change oil and flush system.

SNOW PLOW RAISES VERY SLOWLY M3493

Does the motor armature turn tightly?

Repair/ replace motor.


No Yes

No

YesNo

No No

Yes YesYes

No

No Yes

No

No

No


Clean/replace PO check valve (CV1 & CV2). Does it angle to leftside?

Clean/replace cross over relief valves. Check setting 2500 psi. Does it angle to left side?

Does D coil (red wire) have magnetism?

Is there power to D coil (red wire)?





Replace D coil.

SNOW PLOW DOES NOT ANGLE TO LEFT SIDE M3493

Replace D cartridge valve. Does it angle to leftside?

Note: Before start troubleshooting check that plow moves up and down. If plow does not move up and down see "plow does not raise".

Check for a bent or seized cylinder.

Change A cartridge valve. Does it angle to left side?

Does the motor operate when angle switch is pressed?


Does motor operate when up switch (left/right) is pressed?


No No

Yes

PLOW DOES NOT HOLD ANGLE M3493

Are cylinders spongy? Can blade be moved 2" to 6" by hand?

Bleed air from cylinders. Check for any loose connections.

Check pressure operated check valve CV1 & CV2 AND a piston. Clean/ replace.

Check cross over valves X1 and X2. Clean/ replace. Replace seat if necessary. Check setting to 2500 psi.Does it hold angle?


No No No

YesYes Yes

No

No Yes

No

Yes

Does B (valve) coil (yellow wire) have magnetism?

Is there power to the B coil?

SNOW PLOW WILL NOT LOWER M3493

Is there power leaving switch





Replace cartridge valve B. Does plow lower down?

Replace Coil B.

Clean/replace a orifice. Does plow lower down?

Check for bent or seized cylinder.

Clean/replace B valve cartridge.

Fix any leakage from cylinder or fittings or hose. Is plow still going down?

SNOW PLOW LEAKS DOWN M3493

If snow plow angles left before going up change D valve and if snow plow angles to right side change A valve.

SNOW PLOW ANGLES BEFORE GOING UP WHEN UP SWITCH IS PRESSED M3493

SNOW PLOW WHEN FULLY ANGLED GOES UP (WHEN ANGLE SWITCH IS PRESSED) M3493

Change C Valve cartridge.

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