Lineman’s Hoist inspecting, maintaining and operating this ... Linemans... · Each Little Mule...

Operating, Maintenance &Parts Manual

LMST680-2

Lineman’s Hoist

The use of any hoist presents some risk of personal injuryor property damage. That risk is greatly increased if properinstructions and warnings are not followed. Before using thishoist, each operator should become thoroughly familiar withall warnings, instructions and recommendations in thismanual. Retain this manual for future reference and use.Forward this manual to the hoist operator.Failure to operate the equipment as directed in the manualmay cause injury.

Should you have any questions or have problems with thisproduct, please call Little Mule at (800) 477-5003

Before using the hoist, fill in the information below:Model No.Serial No.

Purchase Date

Follow all instructions and warnings forinspecting, maintaining and operating this hoist.

Linem

an’s

Hoist

Model Numbers322B344B322DB344DB322CB344CB322DHB344DHB

®

1

Country Club RoadP.O. Box 779Wadesboro, NC 28170 USATEL: (800) 477-5003FAX: (800) 374-6853

SAFETY PRECAUTIONSEach Little Mule Lineman’s Hoist is built in accordance withthe specifications contained herein and at the time ofmanufacture complies with our interpretation of applicablesections of *American Society of Mechanical Engineers Code(ASME) B30.21. *Copies of this Standard can be obtainedfrom ASME Order Department, 22 Law Drive, Box 2300,Fairfield, NJ 07007-2300, U.S.A.

1. NOT operate a malfunctioning or unusually performing hoist.2. NOT operate the hoist until you have thoroughly read and

understood the manufacturer’s Operating and MaintenanceInstructions or Manuals.

3. NOT operate a hoist which has been modified without themanufacturer’s approval or certification to be in conformitywith applicable OSHA regulations.

4. NOT lift or pull more than rated load of the hoist.5. NOT use damaged hoist or hoist that is not working properly.6. NOT use hoist with damaged or excessively worn strap.7. NOT operate with any handle extension (cheater bar).8. NOT attempt to “free-wheel” the hoist while a load is applied.9. NOT use the hoist to lift, support or transport people.

10. NOT lift loads over people and should always make sure allpersonnel remain clear of the supported load.

11. Protect the hoist’s strap from weld splatter or other damagingcontaminants.

12. NOT operate hoist when it is restricted from forming a straightline from hook to hook in the direction of loading.

13. NOT use hoist strap as a sling or wrap around load.14. NOT apply the load to the tip of the hook or to the hook latch.15. NOT apply load unless strap is properly seated in the drum.16. NOT leave load supported by the hoist unattended unless

specific precautions have been taken.17. NOT remove or obscure the warnings on the hoist.18. NOT operate a hoist which has not been securely attached to

a suitable support.19. NOT operate a hoist unless load slings or other approved

attachments are properly sized and seated in the hooksaddle.

20. NOT lift loads that are not balanced and that the holdingaction is not secure, taking up slack carefully.

21. NOT operate a hoist unless all persons are and remain clearof the supported load.

22. Report malfunctions or unusual performances of a hoist, afterit has been shut down until repaired.

23. NOT operate a hoist on which the safety placards or decalsare missing or illegible.

24. Be familiar with operating controls, procedures and warnings.

1. Maintain a firm footing or be otherwise secured whenoperating the hoist.

2. Use hook latches. Latches are to retain slings, chains, etc.under slack conditions only.

3. Make sure the hook latches are closed and not supportingany parts of the load.

4. Make sure the load is free to move and will clear allobstructions.

5. Avoid swinging the load or hook.6. Avoid lever “fly-back” by keeping a firm grip on the lever until

operating stroke is completed and the lever is at rest.7. Inspect the hoist regularly, replace damaged or worn parts

and keep appropriate records of maintenance.8. Use the hoist manufacturer’s recommended parts when

repairing the unit.9. NOT use the hoist load limiting or warning device to measure

load.10. NOT operate except with manual power.11. NOT permit more than one operator to pull on lever at the

same time. More than one operator is likely to cause hoistoverload.

12. NOT allow your attention to be diverted from operating thehoist.

13. NOT allow the hoist to be subjected to sharp contact withother hoists, structures or objects through misuse.

14. NOT adjust or repair the hoist unless qualified to perform suchadjustments or repairs.

TABLE OF CONTENTSSafety Precautions . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1Safety Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2Hoist Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2Inspection and Maintenance Check List . . . . . . . . . . . . .4Replacement Parts List . . . . . . . . . . . . . . . . . . . . . . . . . .5Warranty . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Back Cover

Improper operation of a hoist can create a potentially hazardoussituation which, if not avoided, could result in death or serious injury.To avoid such a potentially hazardous situation, THE OPERATORSHALL:

Improper operation of a hoist can create a potentially hazardoussituation which, if not avoided, could result in minor or moderateinjury. To avoid such a potentially hazardous situation, THEOPERATOR SHALL:

2


SAFETY INFORMATIONWARNING:

ELECTRICAL SHOCK MAY RESULT IN SERIOUS INJURY OR DEATH:

The web strap on this hoist is NOT a rated insulatingmember.When clean and dry, the strap may have dielectricproperties typical of nylon or polyester fibers. The non-metallichandle and webbing provide an extra measure of safety foruse around energized power lines. Use an appropriateinsulating member in series with hoist to achieve properworking distances per OSHA Regulation Subpart V,1926.950 or your company work practices.When thehandle swings closer to energized conductors than OSHA safeworking distances or company practices permit, useappropriate clothing and rubber gloves for rated voltages.

HOIST SPECIFICATIONSAll web strap hoist models are designed for lifting and pullingloads up to rated capacities listed on the hoist nameplate.Features include a winding wheel for taking up slack or free-stripping of the strap and a handle tip designed to bend beforeany mechanical part of the hoist is subjected to damagingoverload. The handle may be inserted into the U-Frame socketfrom either direction to facilitate use in confined areas or toallow the operator to pull against the load under unusualconditions. A double, interlocking pawl system providespositive load control at all times. Hot-stick rings on levers andhooks increase safety and utility. Refer to Table 1.

OPERATIONLIFTING OR PULLINGPlace reversing lever in up position, engaging the loading pawlagainst the ratchet teeth. Work handle as required to getdesired lift or tension. Handle may be inserted into either endof the U-frame socket to enable user to work in restrictedareas. Never use a “cheater” bar or handle other than thoseapproved by the manufacturer.

LOWERINGPlace the reversing lever in the down position and operate thehandle to its extreme down position until the load is removedfrom the holding pawl. As the handle is slowly released, theload will be lowered or released by one notch. To continuelowering repeat this operation.

FREE-WHEELINGBefore attempting to free-wheel make certain the hoist isunloaded. To release the strap for free-wheeling, the reversinglever must first be in the down position. Press the free-wheellever. The strap may now be stripped from the drum to facilitatemore rapid positioning while attaching to the object to be pulledor lifted. For safety, the hoist will not free-wheel while underload (approx. 35 lbs, depending on amount of strap on drum).This is possible with the torsion spring between the releasingarm and pawl assembly.

MAINTENANCEMaintenance of the hoist is normally limited to cleaning andlubrication. The hoist should always be lubricated followingeach cleaning operation to replace any lubricants that werewashed away.

Figure 1

Figure 2

Figure 3

Free-Wheel

Rig hoist properly so that the hoist is free to align with the directionof pull. Avoid side loading. Hoist frame should not bear againstanything and should be free to align with hooks.

CLEANINGUnder normal use, minimum cleaning is required. Clean themetal parts and web strap with soap or detergent and water.Allow the web strap to dry thoroughly before using hoist.LUBRICATIONLubricate the following areas weekly with a light grease:

a. ratchet teeth of drum.b. contact points between U-frame and free-wheel lever.c. contact points between loading pawl and pin (H5230-31).

Lubricate the following areas weekly with SAE 20-30 gear oil:a. rotating points of shafts, with the exception of the drum

shaft.b. hook shanks.

Only small amounts of lubricants need to be applied.DO NOT saturate areas with grease/oil. DO NOT allow lubricants to contact strap.FREQUENT INSPECTIONSIn addition to performing all the frequent inspections listed underFREQUENT INSPECTION on Figure 4, visual observationsshould be conducted during regular service for any damage.Any deficiencies shall be carefully examined and determinationmade as to whether they constitute a hazard as follows:

a. Check all functional operating mechanisms formaladjustment interfering with proper operation.

b. Check all hooks and latches for deformation, chemicaldamage, cracks and wear.

c. Check all hook latches for proper attachment andoperation.

d. Check levers for bends, cracks or other damage.e. Check for damage to the support for the hoist.

Web Strap InspectionAll web straps should be visually inspected by the operator orother designated person at the start of each shift. These visualobservations should be concerned with discovering grossdamage, such as that listed below, which may be animmediate hazard:

a. melting or charingb. acid or caustic burnsc. weld splatterd. broken stitchinge. cuts or tearsf. damaged eyesg. abrasive wearh. knots

PERIODIC INSPECTIONSIn addition to performing all the periodic inspections listedunder PERIODIC INSPECTION on Figure 4, the followingshould be conducted:

a. A designated person shall determine whether conditionsfound during inspection constitute a hazard and whetherdisassembly is required.

b. Check fasteners for evidence of loosening.c. Check web strap, suspension frame, levers, yokes,

shafts, pins, rollers and locking/clamping devices forevidence of wear, corrosion, cracks and distortion.

Web Strap InspectionPeriodic inspections shall be performed by an appointedperson. This inspection shall cover the entire length of the webstrap. Special care should be taken when inspecting sectionsfor rapid deterioration, such as the following:

a. Sections in contact with saddles, equalizer sheaves, or other sheaves where web strap travel is limited.

b. Sections at or near ends where broken threads or cuts may be evident.

c. Sections subject to reverse bends.d. Sections that are normally hidden during visual

inspection, such as sections passing over sheaves.

3


Table 1 - Specifications

DB - Includes hot-stick rings on all hooks and handle assembly.CB - Includes swivel-type gate latch on all hooks.DHB - Includes hot-stick gate latches on all hooks, hot-stick rings on all hooks and handle assembly.

ModelNo. Capacity

(lbs)Lift(ft)

Hookto Hook(min.) (in)

Single Line Double Line Web StrapLength(ft)

HandleLength(in)

Weight(lbs)Capacity

(lbs)Lift(ft)

Hookto Hook(min.) (in)

322B322DB322CB322DHB344B344DB344CB344DHB

15001500150015002000200020002000

1414141411111111

18 ¼18 ¼21 ¼19 ¼19 ½19 ½2221

30003000300030004000400040004000

77775 ½5 ½5 ½5 ½

23 ¼23 ¼27 ¼2529 ½29 ½3331 ¼

1515151512121212

24 ¾2624¾2630 ¾32 ¼30 ¾32 ¼

13 ½13 ¾14 ¼1514 ¾1515 ½16 ¼

4


FREQUENT INSPECTIONAll functionalmechanisms forproper operation

Hooks and latches fordeformation, chemicaldamage, cracks & wear(See ASME B30.10)

Hook latch operationWeb strap (See WebStrap Inspection)Levers for bends,cracks, etc.Hoist support for damage

PERIODIC INSPECTIONEvidence of loosepins, nuts or rivets

Evidence of worn,corroded, cracked ordistorted parts such assuspension frame,levers, web strapattachments, yokes,shafts, pins and rollers

Evidence of damage tohook retaining nutsand pins

Evidence of worn pawls,cams or ratchet;corroded, stretched orbroken springs

Warning LabelEnd connectionsand terminations ofweb strap

Item

Normal Service Heavy Service Severe Service

RemarksVisualMonthly

RecordYearly

VisualWeekly

Record6 Months

VisualDaily

RecordMonthly

• • •

• • •• • •• • •• • •• • •

•• ••• •••

•• ••• •••

•• ••• •••

•• ••• ••••• ••• ••••• ••• •••

••••••

Visual inspection by operator or other designated personnel.Visual inspection by designated person of conditions.Visual inspection by designated person of conditions unless conditions indicate that disassembly should be done to permit detailed inspection.

NOTE: All hoists are load tested at 125% of the rated capacity at the manufacturer. If load sustaining parts are altered, replaced or repaired,the hoist must be load tested at rated capacity. This inspection and maintenance check list is in accordance with our interpretation of therequirements of the Safety Standard for Manually Operated Hoists ASME B30.21. It is, however, the ultimate responsibility of theemployer/user to interpret and adhere to the applicable requirements of this safety standard.

Figure 4 - Recommended Inspection and Maintenance Check List

(Weekly Usage) (Daily Usage) (Daily Usage and/or insevere weather conditions)

Capacity (Tons) Date Placed in Service Manufacturer’s Serial No.

Type of Hoist Location / Crew / Truck Manufacturer

INSPECTION AND MAINTENANCE CHECK LISTLEVER OPERATED STRAP HOIST

5

For replacement parts, call 1-800-477-5003Please have the following information ready:-Model number-Serial number (if any)-Part description and number as shown in parts list

Figure 5 - Base Hoist

RefNo. Description Part

No. Qty RefNo. Description Part

No. QtyWarning LabelBushingPin, 1/8 x .88, Type GMain Frame Assembly (includes 1-7)Pin, 3/16 x .75, Type BStrap RollerPin, 1/4 x 2.50WasherPawl AssemblyPawl SpringPawl ShaftPin, 1/8 x 1.00Releasing ArmFree-Wheel LeverReturn SpringPin, 1/8 x .88Reversing Mechanism Kit (includes 8-16)

687K18LM12H5230-30LG3411BH5230-313427H5242LM4000242B23L2444B-1H5251279B-2348D23L1H5250243BRP

12211113111211211

18192021222324252627282930313233

Strap DrumRetaining RingDrum ShaftPin, 1/8 x 1.25Winding WheelWinding Wheel Assembly (includes 12, 19-22)Pawl ShaftU-Frame (includes 29)Reversing SpringReversing LeverPawlHandle LockU-Frame Assembly (includes 19, 24-29)Drive ScrewName Plate Kit (includes 31)Strap Drum Cover Kit (optional cover shown)

3470BH5596472B73-132RLG107B445B440BRP4247B241B51446BH2861P676L1K34K

131111111111121*

31 32

29 2619

2428

27

3

2

20

22

21

19 1

18

813

16

12

157 6

2

5

12

4

25

1234567891011121314151617

30

17

23

11

14

8910

33

6


Figure 6 - Models 322B & 344B

Parts List for Models 322B & 344B

* Yellow, 15’ Long** Blue, 12’ Long

RefNo. Description Model

322BModel344B Qty

1234567891011121314151617181920212223

3471/15 *2450B50R649040344350KH2753H3941H2864P3M003C01S10ALM16H52503M003C01SLM16H5596396BLM3433394L18-3L18-13495335B399B

372/12 **3050B50R649040344350KH2753H3941H2864P3M004C09S10AH3986PH52503M003C01SLM16H5596396BLM3433394L18-3L18-13495335B3499B

11111111232311211111111

3

2

4

65

78

910

1211

1013

1217 16

14

15 1

20

21

919

11

1812

10

StrapHandle Assembly (includes 3-5)Handle GripWarning DecalHandle Tip Kit (includes 6-8)ScrewNutDrive ScrewHook & Latch Assembly (includes 10)Latch KitNutPin, 1/8 x .88Hook & Latch Assembly (includes 10)NutRetaining RingShaftEnd YokeIdler YokeQuick Connect RingQuick Connect PinRollerEnd Hook & Yoke Assembly (includes 12-17)Idler Hook & Yoke Assembly (includes 9, 11, 12, 18-21)

22

23

7


Figure 7 - Models 322DB & 344DB

Parts List for Models 322DB & 344DB

* Yellow, 15' Long** Blue, 12' Long


322DBModel344DB Qty

12345678910111213141516171819202122232425

StrapHandle Assembly (includes 3-7)Handle CapPin, 1/8 x 1.25Handle GripWarning DecalHandle Tip Kit (includes 8-10)ScrewNutDrive ScrewHook & Latch Assembly (includes 12)Latch KitNutPin, 1/8 x .88NutRetaining RingShaftEnd YokeHook & Latch Assembly (includes 12)Idler YokeQuick Connect PinRollerQuick Connect RingEnd Hook & Yoke Assembly (includes 14-19)Idler Hook & Yoke Assembly (includes 11, 13, 14, 20-23)

3471/15 *2450DB350-5-673-150R649040344350KH2753H3941H2864P3M003C02S10ALM16H5250LM16H5596396BLM34333M003C02S394L18-13495L18-3335DB399DB

372/12 **3050DB350-5-673-150R649040344350KH2753H3941H2864P3M004C02S10AH3986PH5250LM16H5596396BLM34333M003C02S394L18-13495L18-3335DB3499DB

1111111111232312111111111

4

5

3

6

8109

111213 14

191218 17

1

14

15

1613 23 22

21

201412 11

7

2

25

24

8


Figure 8 - Models 322CB & 344CB

Parts List for Models 322CB & 344CB



322CBModel344CB Qty

123456789101112131415161718192021222324

StrapHandle Assembly (includes 3-5)Handle GripWarning DecalHandle Tip Kit (includes 6-8)ScrewNutDrive ScrewHookGate LatchNutSpringPin, 1/8 x .88HookEnd YokeNutRetaining RingShaftIdler YokeQuick Connect PinRollerQuick Connect RingEnd Hook & Yoke Assembly (includes 10, 12-18)Idler Hook & Yoke Assembly (includes 9-13, 19-22)

3471/15 *2450B50R649040344350KH2753H3941H2864P324PGH9324PGH1H3986P324DH2-3H5250324PGH8LM3433LM16H5596396B394L18-13495L18-3335CB399CB

372/12 **3050B50R649040344350KH2753H3941H2864P324PGH9324PGH1H3986P324DH2-3H5250324PGH8LM3433LM16H5596396B394L18-13495L18-3335CB3499CB

111111112323311121111111

3

87 6

1

212211

19

139

1024

23

17

1512

13

14

18

9

1310

1211

42

5

2012

16

10

9


Figure 9 - Models 322DHB & 344DHB

Parts List for Models 322DHB & 344DHB



322DHBModel344DHB Qty

123456789101112131415161718192021222324252627

StrapHandle Assembly (includes 3-7)Handle CapPin, 1/8 x 1.25Handle GripWarning DecalHandle Tip Kit (includes 8-10)ScrewNutDrive ScrewHookSpringGate LatchNutPin, 1/8 x .88End YokeNutRetaining RingShaftGate LatchHookIdler YokeQuick Connect RingQuick Connect PinRollerEnd Hook & Yoke Assembly (includes 12, 15-21)Idler Hook & Yoke Assembly (includes 11-15, 22-25)

3471/15 *2450DB350-5-673-150R649040344350KH2753H3941H2864P3M003C03324DH2-3324DH9LM16H5250LM3433LM16H5596396B324DH93M003C03394L18-3L18-13495335DHB399DHB

372/12 **3050DB350-5-673-150R649040344350KH2753H3941H2864P3M004C06324DH2-3324DH10H3986PH5250LM3433LM16H5596396B324DH93M003C03394L18-3L18-13495335DHB3499DHB

111111111123223112111111111

1

2

6

5

43

78910

111512

13

14

2621

15

12201916

17

1822

14

27252413

1511

1223

10


NOTES

Country Club Road • P.O. Box 779Wadesboro, NC 28170 U.S.A

Phone 800-477-5003 • 704-694-2156 Fax 800-374-6853 • 704-694-6829

deterioration is caused by normal wear, abuse,improper or inadequate maintenance, eccentric orside loading, overloading, chemical or abrasiveactions, excessive heat, unauthorizedmodifications or repairs, or use of non-Coffing/LittleMule repair parts. EXCEPT AS STATED HEREIN,COFFING HOISTS/LITTLE MULE MAKES NOOTHER WARRANTIES, EXPRESS OR IMPLIED,INCLUDING WARRANTIES OFMERCHANTABILITY AND FITNESS FOR APARTICULAR PURPOSE.

© 2003 Little Mule® Printed in USAJanuary 2008

WARRANTYEvery hoist is thoroughly inspected andperformance tested prior to shipment from thefactory. If any properly installed, maintained andoperated hoist as outlined in the applicableaccompanying Little Mule manual develops aperformance problem due to defective materialsor workmanship as verified by Coffing Hoists/LittleMule, repair or replacement of the hoist will bemade to the original purchaser without chargeand the hoist will be returned, transportationprepaid. This warranty does not apply where

®

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