9500260-12Printed in U.S.A.

The B&M TH-700 (4L60) Transpakhas been designed to work on all 1982thru 1993 TH-700’s (4L60's). This kitWILL NOT work on 1992 and later4L60E (electronic) models. During 1982thru 1993 model years four majorchanges were made to the TH-700’shydraulic circuitry. It is important thatyou know the year model of the trans-mission your working on so that youcan identify the correct checkball place-ment diagram. Figure 1 describeswhere to look on your transmission formodel year identification. If the originaltransmission in your vehicle was re-placed by a factory rebuild, the I.D.number may have been changed. Inthis case you will have to compare thecomponents in your transmission withthe check ball placement diagrams inthe instructions to determine the cor-rect check ball placement.WARNING: Incorrect checkballplacement can result in serioustransmission damage. Be sure tofollow the instructions carefully.We have included a section on TVcable installation that will be helpful toindividuals using the TH-700 with after-market carburetors, manifolds or in acustom vehicle installation.B&M's TH-700 Transpak can be in-stalled by anyone with minimum me-chanical experience. It is however, im-

portant to closely follow the instruc-tions.We recommend that you readthrough the instructions completelybefore beginning the installation,so you can familiarize yourself withthe installation procedure and toolsrequired. Check the tool list at theend of these instructions for thetools required to install your B&MTH-700 Transpak.NOTE: The B&M TH-700 Transpak isnot a cure-all for an ailing transmis-sion. If your transmission is slipping orin poor general shape, the installationof this Transpak may worsen the con-dition. However on a properly operatingtransmission in average condition, theTranspak will provide the kind of trans-mission performance your looking for.When installing your Transpak thereare several other B&M products youmay wish to consider:TH-700 R4 KICKDOWN KIT #70237The TH-700 has a hydraulic circuit thatcauses a forced 4-3 down shift when-ever the throttle is opened past twothirds travel. In some applications apart throttle forced 4-3 down shift isundesirable, after many customer re-quests B&M has developed an easilyinstalled kit that will eliminate the partthrottle 4-3 down shift feature. This kitdoes not alter normal shift speeds or

affect detent (wide open throttle 4-3)operation. This kit is best installedalong with B&M’s #70235 Transpak.However it can also be installed inde-pendent of other modifications, andvalve body removal is not required (pangasket not included).Converter Lockup Control #70244/70248 Provides electronic control ofthe vehicle speed where lockup takesplace on GM transmissions with lockupconverter. Eliminates lock and unlockcycling and premature unwantedlockup. Also ideal for lockup operationin vehicles that did not come withlockup converter transmissions. Workswith all GM lockup transmissions.TRANSMISSION OIL COOLER Wefeel that it is very important that everyvehicle in addition to the radiator heatexchanger should have an oil cooler.Heat is the major cause of transmis-sion failures, and an oil cooler is aninexpensive safeguard against over-heating. B&M offers a wide range oftransmission coolers to suit every need,which are available at your B&M dealer.The TH-700 runs hotter than most otherautomatic transmissions, making anoil cooler almost a necessity.TRICK SHIFT PERFORMANCE ATFTrick Shift performance automatic trans-mission fluid is the industry’s leadingperformance ATF. A specially blended

Installation InstructionsTranspak 1982-93 GM TH-700R4

(4L60) Non Electronic TransmissionPart Number 70235

©2001, 1996 by B&M Racing and Performance Products

oil with foam inhibitors, extreme pres-sure agents and shift improvers, thisfluid assures protection while deliver-ing the fastest possible shifts. Youliterally “Pour in performance.” Avail-able at your B&M dealer.DRAIN PLUG KIT #80250 TH-700transmissions do not come from thefactory equipped with drain plugs. TheB&M Drain plug kit is inexpensiveand easy to install. It eliminates themess of a fluid change or pan removal.POWER SWITCH KIT #80217 (1982through 1989 TH-700’s only) This kitwill enable you to select between nor-mal Torque Converter Clutch (TCC)operation and having it unlocked in allgears except fourth. This kit can alsobe utilized for TCC control in custominstallations of the TH-700. Keepingthe TCC in the unlocked mode duringcity driving saves wear and tear on theTCC as well as minimizing TCC en-gagement at low speeds. The B&MPower Switch Kit will not prevent theTCC from locking in fourth gear (over-drive). TCC engagement in fourth gearis required to prevent transmission over-heating. Kit does not work on 1990 orlater TH-700’s.TH-700 DEEP OIL PAN #70289 TheB&M TH-700 deep oil pan ads approxi-mately 3 quarts of extra oil capacity toyour transmission. The additional oilcapacity will help reduce the tempera-ture of your transmission, thereby pro-moting longer transmission life.TEMPERATURE GAUGE KIT #80212Most transmission and converter fail-ures can be traced directly to exces-sive heat. The B&M transmission tem-perature gauge can save you a costlyrepair bill by warning you ahead of timeof an overheated transmission. TheB&M temperature gauge is extremelyaccurate and dependable, it comeswith all necessary hardware and iseasy to install.

INTRODUCTION

This kit can be installed in a fewhours by carefully following the instruc-tions. Read all instructions first tofamiliarize yourself with the partsand procedures. Transmission com-ponents are precision fit, work slowlyand do not force any parts. Burrs anddirt are the number one enemies of an

A HOIST WORK BEST, DO NOT USEJACKS ALONE.STEP 1. The TH-700 does not have adrain plug. Position your drain panbeneath the transmission to catch theoil. Remove the oil pan by removing therear bolts first, then work towards thefront. Loosen but do not remove thethree front bolts. If the pan sticks to thegasket, insert a flat screwdriver be-tween the pan and case and pry downgently to break the pan loose. Nowremove the front three bolts slowly topermit draining the rest of the oil. Re-move pan gasket material from the panand the case.STEP 2. Remove the oil filter by gen-tly pulling it straight down. The pickuptube has an O-ring (or seal) around theend that fits into the pump housing.Sometimes the O-ring (or seal) re-mains in the pump bore, if so remove O-ring (or seal) from the pump and dis-card both the O-ring ( or seal) and filter.STEP 3. (See Figs. 2 and 3) Thereare a variety of different wiring har-nesses used on the TH-700. Beforeproceeding further make a sketch andsome notes describing your particularunit, recording which connectors go towhich switch. Notice that the connec-

automatic transmission. Cleanlinessis very important, so a clean worksurface from which oil can easily beremoved is necessary.

This kit contains all parts neces-sary to obtain two different levels ofperformance, depending on intendeduse:1. Heavy Duty; Towing, campers, mo-tor homes and 4-wheel drive vehicles.Shift feel is firm and positive.2. Street; Dual purpose performancevehicles, street and strip performancecars. Street level produces the firmestshift feel.

DISASSEMBLY

Automatic transmissions operateat temperatures between 150° F and250° F. We suggest the vehicle beallowed to cool for several hours beforedisassembly to avoid burns from hot oiland parts. Have an oil drain pan readyto catch oil and a tray on which to putsmall parts so they won’t get lost. Thevehicle should be raised so there is atleast 2 feet ground clearance for easeof installation and safety.MAKE SURE THE VEHICLE IS RIG-IDLY AND SECURELY SUPPORTED,JACK STANDS, WHEEL RAMPS OR

Figure 1

2

3

Figure 2

tors are color coded. Now remove con-nectors from switches. Unplug the wir-ing harness from the case electricalconnector by prying the lock tab awayfrom the plug and pulling down on theplug, do not pull on the wires. Re-moving solenoid is not required, just tiethe wires up out of the way.STEP 4. Remove all except the cen-ter valve body bolt (See Fig. 2.) Begin-ning with the mid 1987 model year, TH-700’s have a tube crossing over thevalve body. This tube is removed bysimultaneously pulling both ends out oftheir respective bores. With the tuberemoved (if equipped) hold the valvebody up firmly with one hand and re-move the remaining bolt slowly. Thereare several check balls in the valvebody along with several pints of oil.Have your drain pan ready to catch theoil and check balls (should they fallout.) Save all check balls in a safeplace where they won’t get lost.STEP 5. Beginning mid 1987 modelyear, TH-700’s have an auxiliary valvebody located where earlier models havea cover plate (See Fig. 2.) Remove thecover plate or auxiliary valve body. Becareful not to drop the check ball lo-cated in the auxiliary valve body (SeeFig. 8.) Remove the 1-2 accumulatorhousing while holding the separatorplate up to the case. Then slowly lowerthe separator plate and retrieve thecheck balls located above the plate.Make note of the color and location ofthe 1-2 and 2-3 accumulator springs forcorrect reassembly (See Fig. 10.)Remove all old gasket material from

B B

B B

B B

BB

B

BB BB

B B

B

A

C

C C

C

EF

Converter clutchlockup solenoid

Crossovertube

Throttle valvelinkage

ElectricalconnectorAuxiliary valve

body1-2 accumulator

housing

Filter retainingspring

Selector leverdetent spring

Servo ventDo not block

this hole

these parts. Note: Early 1982 TH-700’s had a support plate locatedunder the 1-2 accumulator hous-ing. If your transmission is fitted withthis plate, carefully save the gasket asyou will have to re-use the gasket uponreassembly (Gasket GM P/N 8642129is not included in kit.)

MODIFICATIONS

STEP 6. Using the supplied drills, en-large the holes in your separator plateas indicated in Fig. 4. Carefully deburrthe holes after drilling.STEP 7. Rinse off valve body withclean solvent to remove any dirt or grit.Move to a clean working area. The valvebody consists of precision fit compo-nents which will not tolerate dirt orburrs.STEP 8. Heavy Duty and Street;MTV upshift valve (See Fig. 5.)Remove the pin at the end of the MTVupshift valve bore. Remove the plug,valve and spring from the bore. Set thespring aside (it will not be re-used.) Re-install the valve, plug and pin in reverseorder of removal.STEP 9. Street Only; Line biasvalve.Compress and remove the large roll pinretaining the line bias valve (See Fig.5.) Take care to not distort the roll pinmore than is required to remove it.Remove the aluminum plug, valve andspring from bore. The spring will not bere used. Insert the blocker rod from thekit into the bore. Install the valve andaluminum plug as removed. If the alu-minum plug extends into the roll pinhole, remove the blocker rod and grindor file a small amount from either end ofthe blocker rod until the aluminum plugclears the roll pin hole when all partsare installed.STEP 10. Heavy Duty and Street;Pressure regulator.Remove the snap ring at the end of thepressure regulator bore in the oil pumpassembly (See Fig. 6.) Use a screw-driver to hold the pressure regulatorassembly while removing the retainingring. If the sleeves stick in the bore,lightly rap the sleeve with a small rodand a mallet. Remove two sleeves withvalves and the pressure regulator spring.The pressure regulator valve may fallout but it does not need to be removed.

4

Figure 3

Reassemble the pressure regulatorassembly using the BLUE spring fromthe kit (See Fig. 7.) Use the newretaining ring from the kit. Make surethe retaining ring is firmly seated in itsgroove when assembled. CAUTION:The pressure regulator valve trainMUST be installed in the properorder with the sleeves and valvesoriented in the indicated directions.There are several ways the sleeves and

valves can be installed, however, onlythe orientation shown will work prop-erly. Improper installation will causelow line pressure, resulting in slippingclutches and burned friction elements.It is very important to reassemble thepressure regulator correctly to insureproper operation of the transmission.Take a little extra time with this stepand work slowly. This is a precision fitvalve assembly so do not force the

Figure 4

Drill 1/8" (.125")

Drill 3/32" (.094")

Note: additional model year I.D.1982 thru mid-87 (2) holesmid-1987 to 1988 (2) holes

1988 and later (1) holeDrill 1/8" (.125")

Wiring harness plug Pry lock tab asideto remove plug

Figure 5

Figure 6 Figure 7

Pressure regulator valve assembly mustbe installed as shown in this order

5

Street level only, replace linebias valve spring with blocker

rod from kit

Large diameterroll pin

Aluminum plugrecess should

face outLine biasvalve

Manual valve link mustbe assembled as shown

Pressureregulator bore

Pressure regula-tor retaining ring

Roll pin

Removespring

MTV upshiftvalve

Aluminum plugrecess should

face out

Figure 8 - Transmission without auxiliary valve body (Before mid-1987)

Check ballposition #3 Check ball

position #2Check ballposition #1

Check ball position "A", 1984 1/2 and latermodels have larger check ball in this position(earlier models have nothing in position "A")

Figure 8A - Transmission with auxiliary valve body (mid-1987 to 1988)

Check ballposition #4

Check ballposition #5 Do not install check

ball in this position

Check ballposition #6

Do not install checkball in this position

Check ballposition #4

Check ballposition #5 Do not install check

ball in this position

Check ballposition #6

Do not install checkball in this position

Check ballposition #2 Check ball

position #1Do not install checkball in this position

Check ballposition #3

Check ball position "A",copper flashed ball larger than

other check balls

Auxiliary valvebody

6

Figure 8B - Transmission with auxiliary valve body (1988-92)

Check ballposition #5 Do not install check

ball in this position

Check ballposition #2 Check ball

position #1Do not install checkball in this position

Check ballposition #3

Check ball position "A",copper flashed ball larger than

other check balls

Auxiliary valvebody

Do not install checkball in this position

Do not install checkball in this position

Check ballposition #6

Check ballc a p s u l e1988 andlater. Mustbe in origi-nal loca-tion.

Figure 97

Check ball position "A"Copper flashed ball larger

than other check balls

Check ballposition # 1Check ball

position # 2

Auxiliary valvebody

Check ballposition # 7

Do not install checkball in this position

Check ballposition # 3

1993 case check balls same as Figure 8B

Figure 8C - Transmission with aux. valve body(1993 Only)

Case sidegasket

C

Valve bodyside gasket

V

Seperator plate gaskets

valves back into the bore. During reas-sembly, you can smear grease on thevalve and spring before you insert theminto the bore to hold them in place whileyou install the boost valve assembly.To ease installation a thin blade screw-driver can be used to hold the assem-bly up into the bore while you install thesnap ring. Place the snap ring aroundthe screwdriver and slide it up intoplace with the snap ring pliers. Be surethe snap ring goes into the groove andis not against the step in the bore.

ASSEMBLYSTEP 11. Heavy Duty and Street;Check ball placement (See Fig’s. 8,8a and 8b.) Place check balls in thevalve body, auxiliary valve body andcase in the positions shown. Use a dabof grease or petroleum jelly to holdcheck balls in position. Beginning mid1984 model year TH-700’s have a checkball which is larger than the others inthe valve body position ‘A’. If yourtransmission is equipped with thischeck ball replace it in position ‘A’. Ifyour transmission does not have thischeck ball then place nothing in posi-

tion ‘A’, pre mid 1984 transmissionswere not equipped with a check ball inthis position.STEP 12. Place the new separatorplate gaskets on the separator plate(See Fig. 9.) Use a dab of grease orpetroleum jelly to help hold the gas-kets to the plate. The gasket with the‘C’ cut in it goes next to the case andthe gasket with the ‘V’ cut in it goesnext to the valve body. Make sure noholes in the separator plate are cov-ered by the gasket.

If your gaskets become damagedanytime during the installation of thekit, replace them. If you cannot obtainB&M replacement gaskets then pur-chase OEM gaskets for your specificyear and model vehicle.STEP 13. Heavy Duty Only; Placethe 3-4 accumulator pin in the case.Over the pin place the RED (3/8") spacersleeve, accumulator piston and spring(spring is installed at step 18.) Use adab of grease or petroleum jelly to holdcomponents in place (See Fig. 10)Proceed to step 15.STEP 14. Street Only; Place the 3-4

accumulator pin in the case. Over thepin place the BLUE (3/4") spacer andaccumulator piston, using a dab ofgrease or petroleum jelly to hold themin place (See Fig. 11). Importantnote: With piston and spacer installedin bore rub a straight edge on the casesurface across the accumulator boreand verify the piston does not extendbeyond the case surface. If the straightedge contacts the accumulator piston,grind or file a small amount from thespacer until the piston clears thestraight edge. No spring is used forStreet level performance.STEP 15. Heavy Duty Only; Removethe spring and piston from the 1-2accumulator housing (See Fig. 10.)Install over the pin the YELLOW spacer,piston (notice orientation) and spring.Proceed to step 17.STEP 16. Street Only; Remove thespring and piston from the 1-2 accumu-lator housing (See Fig. 12.) Installboth the BLUE and the RED spacersover the pin, then the piston (noticeorientation.) No spring is used forStreet level performance.

Figure 10 Figure 11

8

STEP 17. With the 3-4 accumulatorcomponents and case check balls inplace, place the separator plate / gas-ket assembly up to the case followedby the 1-2 accumulator housing as-sembly. Carefully line up the gasketsand install three accumulator housingbolts, tighten ONLY finger tight (SeeFig’s. 2, 10 and 11.)STEP 18. Install the auxiliary valvebody (with check ball in correct posi-tion) or cover plate using the appropri-ate screws tightened ONLY finger tight(See Fig’s. 2 and 8.)STEP 19. Valve body installation.Make sure check balls are in properlocations. Position the manual valve sothe link rod can be engaged (See Fig.6.) The link rod must be placed into thehole of the manual rod at a right angle,then rotated to allow the valve to enterthe valve body bore. Do not force thevalve at any time. When the valve isfully engaged, align the valve body and Figure 12

Figure 13case holes then install one bolt fingertight to hold valve body in place. En-gage all of the remaining bolts to finishlining up the separator plate and gas-kets (See Fig. 2.) Tighten all the valvebody, auxiliary valve body (or cover)and accumulator bolts (except crossover tube clamp bolts and throttlevalve linkage bolts) to 11 NM (8 Ft.Lb.) Avoid striped threads, Do notover tighten bolts.STEP 20. Install the throttle valve (TV)

linkage onto the valve body as shown(See Fig. 12.) Engage the cable linkwith the large lever first. Hold the largelever up and the smaller one down.Then slip the assembly into positionaligning it with the hold down bolt holesand engage the roll pin in the slot on thebracket. Insert bolts and tighten to 11NM (8 Ft. Lb.) then make sure largelever operates freely. IMPORTANTNOTE: The TV cable MUST be resetbefore operating vehicle refer to

step 25.STEP 21. Carefully insert ends ofcross over tube in their respective boresand push in evenly until fully engaged(See Fig. 2.) Install cross over tubebolts and clamps and tighten to 11 NM(8 Ft. Lb.)Reconnect wiring harness connectorsto the terminals from which they wereremoved. Refer to sketch or notes madeat Step 3. Reconnect the harness tothe case connector making sure it is

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firmly seated and locked.STEP 22. Double check installation;1: make sure all bolts are installed andtorqued. 2: Throttle valve linkage oper-ates freely. 3: Wiring properly con-nected. 4: Regulator valve retainingring fully seated in groove.Coat the filter pickup tube seal withclean ATF then push the filter tube intothe pump bore until it is fully seated.Install filter retainer clip so it is locatedat the small depression on the top sideof filter housing (See Fig. 2).STEP 23. Remove any old pan gasketmaterial from pan and case pan rail.Clean inside of pan with solvent. Youmay want to install a B&M Drain plugkit (80250) at this time. Install the newpan gasket on the pan and align theholes. Use grease or petroleum jelly tohelp hold the gasket in place duringinstallation of pan. Do not use anygasket sealer or silicone com-pounds. To prevent premature bandfailure make sure the hole shown inFig. 2 is not obstructed. Place pan upto case, align holes and install all boltsfinger tight. Tighten bolts to 14 NM (10Ft. Lb.) Do not over tighten bolts. If thebolts are over tightened the gasket willdeform excessively and result in oilleaks.STEP 24. Fill transmission with ATFto the full mark on dip stick. You willneed about 4 to 6 quarts. Dexron II isfine for Heavy Duty Level applica-

tions however, we recommend B&MTrick Shift ATF for Street level appli-cations. With vehicle still off the ground,start the engine and shift transmissionthrough all gears. Check for leaksaround oil pan flange and drain plug.Place selector in neutral and check thefluid level. Stop engine and lower ve-hicle.STEP 25. You must reset the TVcable before operating vehicle, Fig-ure 14 shows the correct proce-dure. Failure to reset the TV cablemay result in poor shift quality and/or transmission failure.STEP 26. Test drive vehicle and re-check for leaks while transmission ishot. Check fluid level again, adjustinglevel as required.

SERVICE

For best performance of your TH-700we recommend changing both the ATFand filter every 15,000 miles (25,000km) if the vehicle is driven under one (ormore) of the following conditions:A. High performance applications

where the vehicle is regularly drivenhard.

B. In heavy city traffic where the out-side temperature regularly reaches90 F (32 C) or higher.

C. In hilly or mountainous terrain.D. Uses such as taxi, police car or

delivery service.

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Pan gasketUpper valve body gasketLower valve body gasketPressure regulator springFilter with sealRetaining ring

Red accumulator spacerYellow accumulator spacer(2) Blue accumulator spacerLine bias valve blocker rod3/32" drill1/8" drill

PARTS LIST

Hydraulic jackJack stands or Wheel rampsOil drain pan3/8" drive ratchet wrench2" extension8mm, 10mm, 13mm, SocketsTorque wrenchInternal retaining ring pliersNeedle nose pliers

Gasket scraper3/8" Drill motorFine cut flat fileWet or Dry sand paperGrease or petroleum jellySmall punch or scribeSmall flat screwdriverFunnel

TOOL LIST

If you do not use the vehicle under anyof these conditions, change the ATFand filter every 50,000 miles (80,000km). It’s also a good idea to check thetorque converter bolts when servicingthe transmission.

Diagnosis procedure

If you experience a performance prob-lem after installing the Transpak, it cangenerally be traced to either an Im-properly set TV Cable or a Mis-installed component in the valve bodyor pressure regulator. The followingprocedure along with the trouble shoot-ing guide will assist you to correct theproblem.1. Check and correct ATF level.2. Check TV Cable adjustment (SeeFig. 13).3. If engine performance indicatesan engine tune up is required, thisshould be completed before roadtesting or transmission correction isattempted. Poor engine performancecan sometimes be mistaken fortransmission problems.4. Check and correct vacuum linesand fittings.5. Check and correct shifter linkage.6. Install oil pressure gage andcheck line pressures. Comparepressures with appropriate valuesfrom Figure 14.

OIL PRESSURE CHECK PROCEDUREPRELIMINARY CHECK PROCEDURE* CHECK TRANSMISSION OIL LEVEL* CHECK AND ADJUST T.V. CABLE* CHECK OUTSIDE MANUAL LINKAGE* CHECK ENGINE TUNE* INSTALL 0-300 PSI PRESSURE GAGE* CONNECT TACHOMETER TO ENGINE* CHECK OIL PRESSURE AS FOLLOWS

MINIMUM T.V. LINE PRESSURE CHECK:With the T.V. Cable properly adjusted and the brakes applied, take the Line Pressure readings in the Ranges and atthe engine RPM’s indicated in the chart.

FULL T.V. LINE PRESSURE CHECK:Full T.V. Line Pressure readings are obtained by holding the T.V. Cable to the full extent of it’s travel then take the LinePressure readings in the Ranges and at the engine RPM’s indicated in the chart.

CAUTION: Limit running time at FULL T.V. Pressure to two (2) minutes maximum to prevent over heating.

CAUTION: Brakes should be applied at all times.

TH700-R4 TRANSMISSION OIL PRESSURES

RANGE MODEL NORMAL OIL PRESSURE NORMAL OIL PRESSUREAT MINIMUM T.V. AT FULL T.V.

kPa PSI kPa PSI

PARK, NEUTRAL, ALL MODELS SEE 517-586 75-85 1145-1400 166-203OVERDRIVE, SEE NOTE BELOWMANUAL 3RD@1000 RPM

REVERSE ALL MODELS 862-955 100-140 1869-2296 180-340@ 1000 RPM SEE NOTE BELOW @ 2000 RPM

MANUAL 2ND & ALL MODELS 1517-1689 160-245 1517-1689 160-295MANUAL LOW SEE NOTE BELOW@ 1000 RPM

NOTE: Oil Pressure at FULL T.V. Pressure depends on the particular T.V. Boost valve and Line Bias Valve arrangementof the unit. The Pressure reading obtained should be within the range shown.

Base Line Pressure is controlled by the Pressure Regulator Valve and Spring. Line pressure is boosted a fixed amountby the Reverse Boost valve when the selector lever is placed in Second or Low Range. The Line Pressure is also boostedin Neutral, Drive, Drive 3 and Reverse with throttle opening because of the T.V. system. The pressure is controlled bythe T.V. Cable via the Throttle Lever and Bracket assembly to the Valve Body assembly.

The Line Pressure tap is located on the left side of the transmission case above the outside Manual Lever.

Figure 14 Oil Pressure Check Procedure

(A) ATTACH PRESSURE GAUGE

11

THROTTLE VALVE MECHANISMThe purpose of the TH700-R4 ThrottleValve (T.V.) and it’s mechanical link-age is to control both the shift feel andshift timing as a function of vehiclespeed and load conditions. As theaccelerator pedal is depressed and thethrottle opens, the T.V. mechanicallinkage relays the motion to the throttleplunger in the valve body by way of theT.V. cable. In factory installations ofthe TH700-R4 the geometric relation-ship between the T.V. cable and throttleshaft bellcrank produces the requiredT.V. cable extension (pull) to throttleopening for the transmission to func-tion properly. In custom installationsthe correct T.V. cable mounting ge-ometry must be accurately determinedif the transmission is to function prop-erly. It cannot be overstated that for theTH700-R4, proper T.V. cable installa-tion and adjustment are paramount toproper transmission function and life.The following procedure will help youdesign a custom T.V. Cable installa-tion that works. The main objective isto accurately position the T.V. cablemounting bracket in relation to thethrottle shaft axis to obtain the properT.V. cable extension (PULL) to throttleOPENING relationship.STEP 1. Measure your T.V. cable toestablish it’s particular mounting di-mension (there are several lengths inuse.) as follows (See Fig. 15). Retract

the slider by depressing the lock tabthen pull the cable housing until theflats on the slider are flush with the endof the adjuster housing then fully ex-tend the cable by pulling the cable endfitting out (slider must remain retracted)until it stops. Holding the end fittingout, measure the dimension from theface on the adjuster housing that regis-ters with the mounting bracket to thecenter of the cable end connector.STEP 2. Add 3/16" (0.19 in.) to themeasurement obtained in Step 1, thisis the perpendicular measurement fromthe REAR FACE of the T.V. cablemounting bracket to the WIDE OPENTHROTTLE position of the T.V. cableconnector pin on the throttle bellcrank(See Fig. 16).STEP 3. The T.V. cable bellcrank mustbe perpendicular (90 degrees) to theT.V. cable when the throttle is 25percent (1/4) open (See Fig. 16), thisgeometric relationship is critical toinsure that the T.V. mechanism movesin the correct proportion to the throttleopening. The mounting location for theT.V. cable connector pin will have to beestablished on the throttle bellcrank ata radius of 1.094 / 1.125 in. There maya suitable existing hole at the correctradius on the throttle bellcrank,otherwise you will have to fabricate anattachment to the bellcrank that willproperly locate the connector pin.

Diagrams of several typical factory in-stallations are shown for reference (SeeFig. 17), notice the geometric relation-ship between the T.V. cable bellcrankand mounting bracket.

Several things should be kept inmind during this stage of the design:1. The proper location of the T.V. cable

mounting bracket is determined bythe angular and radial position ofthe T. V. cable connector pin on thethrottle bellcrank.

2. Make sure that all of the cables orrods that will be attached to thethrottle bellcrank do not interferewith each other when the throttle isadvanced from idle to wide open.

3. Mount the T.V. cable adjusterhousing so that the locktab is readilyaccessible and not blocked by othercables, rods, brackets oraccessories.

STEP 4. Fabricate T.V. cable bracketusing 0.090 - 0.125 in. sheet metal(See Figure 18) for the adjuster hous-ing cutout dimensions. If you use thethicker stock a chamfer will be requiredon two sides of the cable mountingcutout to allow the lock tabs to expandproperly. The T.V. cable adjuster re-quires a pull of about 18 lbs. to ratchetout, so try to make the mounting bracketas rigid as possible. If the mountingbracket flexes the T.V. pressure willnot be consistent.

Figure 15

12

Measure this dimension(with other end attached

to linkage)

Figure 16

Figure 17

Figure 18

13

TROUBLESHOOTING GUIDE FOR THE HYDRAMATIC TH-700-R4 TRANSMISSIONSLIPSValve body bolts loose

Low fluid level1-2 and / or 3-4 accumulator seals missing or damaged.1-2 and / or 2-3 accumulator piston(s) protruding above gasket surface.Pressure regulator and boost valve assembly improperly installed.Throttle valve linkage improperly installed.TV cable not properly set.Throttle valve sticking.Misaligned or interchanged valve body gasket.Filter O-ring damaged or missing.

OVERHEATING, FOAMING OIL AT DIPSTICK OR BREATHEROil cooler insufficient.Oil cooler plugged.High fluid level.

ERRATIC SHIFTINGShifter not properly adjusted.Manual valve not properly engaged.Low fluid level.TV cable binding or improperly set.

LATE HARD SHIFTSValve body gaskets not positioned properlyTV cable not properly set.

WILL NOT SHIFTCheck balls missing or mis-located.Governor failure.TV cable not properly set.

PUMP BUZZ OR WHINELow oil level.Filter tube O-ring cut or missing.Filter clogged.

SOFT 2-3 SHIFTSPressure regulator and boost valve assembly not properly installed.TV cable not set properly.

WILL NOT MOVECheck balls missing or mis-located.Manual valve not properly engaged.Accumulator piston(s) left out or seals damaged.Pressure regulator retaining ring did not seat in groove.Pressure regulator and boost valve assembly not properly installed.

NO CONVERTER CLUTCH APPLYVoltage not reaching solenoid.Harness plug not fully engaged.Connectors not on correct switches.Wires pinched and grounded out.Converter clutch valve stuck or sleeve improperly installed.

NO CONVERTER CLUTCH RELEASEConverter clutch apply valve stuck open.

NO PART THROTTLE DOWN SHIFTTV cable not set properly.Throttle valve binding.

NO REVERSE AND SLIPS IN FORWARD RANGESPressure regulator valve assembly not properly installed.Pressure regulator retaining ring did not seat in groove.

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