830453-TA Elimination Kit Instruction Guide

1. Needle bearing 11. Separator plates (2) 21. Housing 31. Sprag clutch

2. Direct Drive 12. Piston back plate 22. O-Ring 32. Oil seal

3. Needle bearings 13. Direct drive piston 23. Seal rings 33. Retaining ring

4. Ball bearing 14. O-Ring 24. Snap ring 34. Clutch brake disc

5. Splined gear 15. O-Ring 25. Ball bearing 35. Clutch discs (3)

6. Snap ring 16. Clutch cup 26. Snap ring 36. Separator plates (2)

7. Snap ring 17. Belleville washer 27. Thrust washer 37. Piston back plate

8. Retaining ring 18. Pressure plate 28. Clutch shaft

9. Clutch back plate 19. Bolt (3) 29. Woodruff key

10. Clutch discs (3) 20. Oil seal 30. Low drive gear

TA must be completely removed from the tractor to install elimination coupler. After TA has been removed, clamp the TA shaft #28 into a soft jaw vise. Remove snap ring #7, then using a suitable puller, remove clutch pack #8 thru #19 and #33 thru #37 as an assembly. Remove woodruff key #29 from clutch shaft #28. Remove low drive gear #30 with sprag clutch #31 and oil seal #32. The front housing assembly #21 and #24 thru #26 will remain on the shaft. Seal #20 should be replaced. Install snap ring #7 to shaft to hold coupler in place. Install shaft and casting assembly into tub, making sure to align coupler over upper direct drive gear #2. Pump and all pressure tubes and related hydraulic components must be reinstalled. Selector spool linkage can be disconnected. On 85 series tractors disconnect the wires to solenoid on the regulator control valve. On 84 series tractors with TA pump, remove pump gear.

830450-TA Elimination Coupler Kit Instruction Guide

1) Disassemble Old TA

Parts that are not used over:

Sun Gears, Needle Bearings, Pins, Rollers and Pins from Ramp, TA Flywheel, TA PPA and Disc, Carrier Nut and all Linkage.

2) Inspect front and back shaft for reuse.

3) Install front seal into carrier.

4) Install bearings on O.D. carrier ensuring that the flush side of the bearings faces each other.

5) Install flat washer on rear carrier bearing, press on ramp without rollers and pins.

6) Install top shaft with thrust washer and snap ring into carrier.

7) Set carrier assembly off to the side.

8) Inspect back shaft for reuse.

9) Install casting with bearing onto back shaft and install snap ring.

10) Install coupler on top of back shaft.

Important: Install thrust washer on top of back shaft.

11) Install carrier assembly on top of back shaft assembly.

Note: Make sure that oil holes in ramp and casting line up.

12) Install bolts and clips.

It is now ready to install in tub.

830448 Instruction Guide

Product Manual

IH Transmission Section

Wiring Update for Sentry System Test Harness

A. Remove the fuse panel access cover and locate the 14 gauge wire (red with black tracer) that supplies power to the terminal designated “X” on DRAWING #2.

B. Check that this is the correct wire by removing the fuses from the fuse block and check to assure the wire is energized by using a test light.

C. Remove the ground cables from the left and right hand batteries.

D. Trace the wire (red w/black tracer) from the pin into the harness.

E. Remove harness covering if necessary to allow access to the wire.

F. Cut the wire in the harness loom to allow sufficient length for attachment to the switch side of the cab relay located below the fuse block.

G. Strip sufficient insulation from the wire and install ring terminal end.

H. Crimp and solder.

I. Install the terminal end to the switch side of the cab relay.

J. Reinstall the nut.

K. DRAWING #1: Cut the old sentry power supply wire off at the left hand battery positive cable clamp leaving no exposed wire.

L. Tape the wire to the battery cable after cutting the weather pack connector from it.

M. Reconnect the ground cables.

N. Move to the next page for installation of sentry test harness.

NOTE: If tractor is wired different than explained, still wire it like Drawing #2 and disconnect its power source.

830446-Hydraulic Pump Conversion Kit Instruction Guide


(1.) O-Ring Fitting to JIC Fitting

(2.) Suction Line

(3.) Hydraulic Pump

(4.) Pressure Hose


1. Remove pump shield.

2. Drain Hy-Tran.

3. Remove original pump, pressure line and suction line.

4. Install pump and gasket to tractor, pump is mounted inverted, inlet and outlet on opposite sides as OEM.

5. Install o-ring boss fitting to the inlet and outlet side of pump. Also install JIC fitting to the suction line.

6. Install new suction line to filter housing and pump. Note: Some early S/N 3388, 3588, and 3788 applications may require reducing bushing – P/N 830447

7. Install new pressure hose to pump and to the tee on the relief valve block assembly.

Note: Lines will be crossed after installation is finished.

8. Reinstall pump shield.

9. Install Hy-Tran.

830431-TA Elimination Kit Instruction Guide

Parts in Kit:

      • 1-380076 Shaft
      • 1-384185 Bushing
      • 1-B2416 Bearing
      • 3-1040 Plugs
      • 1-22419 O-Ring
      • 1-68136 Housing
      • 1-Red Painted Lower Gear

Displaced Parts

Torque Amplifier, Quill Shaft – 68139,

Original Lower TA Driven Gear (Except 3088, 3288, 3688)

Installation Instructions

1. Remove TA and remove 382349 quill shaft. Retain constant mesh gear (528670), quill housing

(38253), snap rings, and bearing for reuse.

2. Remove needle bearing from quill housing.

3. Install constant mesh gear and small snap ring on elimination shaft. Install quill housing and large snap ring on shaft. Install this assembly in transmission housing.

4. Place O-ring (22419) on housing (380235) and install housing in transmission.

5. Plug all 3 hydraulic jumper tubes, which originally supplied TA, by drilling existing holes oversize to 11/32” approximately 1” deep. Tap the tubes with a 1/8” pipe tap. Install 1 plug (1040) in each tube. Install tubes.

6. (Countershaft) – Use red painted lower gear from kit. On 3088, 3288, 3688, use original lower TA driven gear.

7. PTO Drive Gear: Install shaft seal and bronze bushing (384185), assemble PTO drive gear bearing and bearing housing in the housing (380235).

8. Disconnect linkage from multiple control valve. Linkage can be removed from tractor, if desired.

Note: It is recommended that the main shaft for tractors without TA have a hole thru the center. This allows the needle bearing on the front of the main shaft to get forced lubrication. Without a hole it only gets splash lubrication. Predrilled main shafts may be available, check your application.

830415 – Release Bearing Return Kit Instruction Guide

Burnt release levers on International Harvester tractors equipped with hydraulic clutch assist can be caused by two problems:

1) The major problem is excessive clutch linkage wear, which allows the release bearing to contact the release levers even though the free travel specification is correct. This can be corrected by replacing all worn linkage with new linkage, or by install release bearing return kit (830415) which uses a spring and attaching bracket to fully retract the release bearing away from the clutch levers. Installation instructions for 06, 56, and 66 series tractors are shown on illustration 1. Installation instructions for 86 and 88 series tractors are shown on illustration 2.

2) Defective or misadjusted hydraulic clutch assist cylinders can cause the release bearing to contact the release levers. Repairing or replacing and adjusting the cylinder will correct the problem.

830414-Supercharge System Elimination Kit Instruction Guide

Kit consists of all necessary fittings and hoses to complete conversion. Fits all IH 86 & 30 Series tractors with open center hydraulics. Tractors equipped with power priority hydraulics (PPH) do not use the supercharge circuit. The supercharge system uses excess hydraulic flow from the hitch and auxiliary circuits to supply the MCV pump. The supercharge system minimizes MCV pump cavitations during cold weather.

Some tractors may develop an air pocket in the supercharge line when the supercharge system receives no flow from the hitch/auxiliary valve circuit.

Items contributing to air entry into the supercharge circuit can include:

      • Worn seals and O-rings
      • Cracked hydraulic tube flares
      • Scored hydraulic valve components

If supercharge flow forces the air pocket into the MCV, one or several complaints can result. Possible complaints are:

      • Momentary hard steering
      • Momentary increase in clutch depression effort
      • Momentary decrease in power braking
      • Unexplained downshifting of the torque amplifier (TA)
      • Unexplained flashing of the TA lubrication tell-light
      • MCV hydraulic functions may respond slowly when the tractor is started

If you experience any of these complaints, the MCV supercharge system may be at fault. To isolate the supercharge system:

      • Disconnect the supercharge line from the MCV and cap the fitting at the MCV.
      • Attach a hose to the line and route the supercharge flow to the reservoir. Do not cap the supercharge line. If disconnecting the supercharge line eliminates the complaint, air is entering the MCV circuit from the supercharge circuit.
      • Install supercharge elimination kit.

399776 Instruction Guide

Release Fork Service Bulletin

Problem: Noisy and or clutch pedal bounce at bottom of pedal travel, or when clutch brake is being applied.

Answer: Release fork is contracting pressure plate.

Solution: 1. Remove fork through inspection hole.

2. Replace with new fork.

(Note: New fork from IH has radius ground-in fork for more clearance).

3. If a new fork is not readily available, a 3” long and 3/8” deep radius can be ground into the fork for extra clearance.

4. Some new release forks are coming out with the radius ground on the wrong side. The radius must be on the clutch side of the fork, not on transmission side.

Pressure Plate Mounting Service Bulletin  Case-IH, Steiger, Versatile

Subject: Mounting Pressure Plate to flat flywheel.

After flywheel has been ground, two problems can occur.

1. If the centering ring has not been ground, it can prevent the Pressure Plate from mounting flat to the flywheel.

2. After flywheel has been ground, make sure there is not a radius in the corner of flywheel by the centering ring.

This will keep Pressure Plate from mounting up flat.

Adjustment Procedure for Spicer  Angle-Spring and Angle-Spring 2 Clutches

IMPORTANT: Critical checks before making any internal adjustments

1. Clutch brake “Squeeze” (increased resistance) must occur 1” above floor boards. This adjustment is made by shortening or lengthening the external linkage rod.

2. There must be 1-1/2” of free pedal at the top of the stroke. If not, the clutch will slip or burn out. This adjustment is made internally in the clutch – NEVER WITH THE LINKAGE.

3. There must be 5/8” movement of the clutch release bearing for the clutch to release properly.  If these conditions exist, the clutch is properly adjusted. If not, adjustment of the clutch is accomplished by using the adjusting ring. Specific instructions for manual and self-adjusting clutches are as follows:

384311 New & 830299 Transmission Brake Instruction Guide

1) Remove worn pad from the arm

2) Find center of the arm pad and drill 1” deep with 7/32” bit

3) Chamfer 7/32” hole with ½” bit to achieve a side wall depth of 1/16”

4) Tap 7/32” hole with a ¼” by 20 tap, ½” deep

5) Bolt brake pad to arm using ¼” by 20 tap, ½” countersunk allen head screw


1) Clutch pedal all the way up

2) Transmission brake arm held against gear

3) Lengthen clevis on rod until pin can slide into hole

4) Insert pin and lock key

363499, 363854, 394812, 394813, 394814 & 402778 Instruction Guide

Mechanical TA Assembly Service Tips

1) TA difficult to turn when bolted in tub. Some causes may include the tolerances in transmission housing, component parts or complete TA’s. Another cause may be the planetary carrier seal #361248 not being completely seated in the seal bore. The corrective measure for the planetary carrier seal is to completely bottom the seal bore. Corrective measures may require using shim #830015. Simply cut the shim into 4 equal parts and place the shims equally spaced in front of the TA housing, then retighten the bolts. This procedure should be used when the tolerances cause the TA to become tight when bolted in.

2) TA Lubrication. When installing TA in housing, it is important to index lubrication parts. When standing at rear of tractor facing forward, the TA causing the lube hole must be located at 9 o’clock position.


Prior to installing 3948152, 394812 and 402778 TA, the back gear of the TA must be compared to the one taken out for positive identification.

Bearing Bore Teeth Length

394812 2.100” 1.050”

384813 2.100” 1.40”

402778 2.130” 1.050”