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When testing and adjusting the transmission and power train, move the machine to an area clear of obstructions, with safe exhaust ventilation for the exhausts. Sudden movement of the machine or release of oil under pressure can cause injury to persons on or near the machine. To prevent possible injury, do the procedure that follows before testing and adjusting the transmission and power train. |
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Personal injury can result from spring force released when removing cap screws. Internal spring force will be released when cylinder assembly cap screws are removed causing injury. Always restrain cover as cap screws are loosened. Follow the established procedure in the Service Manual to service these parts. |
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Care must be taken to ensure that fluids are contained during performance of inspection, maintenance, testing, adjusting, and repair of the machine. Be prepared to collect the fluid with suitable containers before opening any compartment or disassembling any component containing fluids. Dispose of all fluids according to local regulations and mandates. |
Before you begin the test, refer to Systems Operation, Testing and Adjusting, "Machine Preparation for Troubleshooting".
| Required Tools | ||
| Part Number | Description | Quantity |
| 1U-5482 | Pressure Adapter Group | 1 |
| 1U-5481 | Pressure Gauge Group | 1 |
| 8T-0846 | Pressure Gauge (0 to 1,000 kPa (0 to 145 psi)) | 1 |
| 139-7050 | Cover Plate | 1 |
| Initial Pressures | |
| Test Port | Pressure |
| 4 | |
| 5 | |
| 6 | |
| 7 | |
| 8 | |
| Initial Pressures | |
| Test Port | Pressure |
| 4 | |
| 5 | |
| 6 | |
| 7 | |
| 8 | |
| Clutch | Change in Pressure for One 5J-1036 Shim | Change in Pressure for One 4M-1751 Spacer |
| 4 | |
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| 5 | |
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| 6 | |
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| 7 | |
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| 8 | |
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- Remove cover (9) from transmission (10). Remove the differential drive shaft.
Show/hide table
Illustration 2 g00904333 (1) Test port for clutch pack 1
(2) Test port for clutch pack 2
(3) Test port for clutch pack 3
(4) Test port for clutch pack 4
(5) Test port for clutch pack 5
(6) Test port for clutch pack 6
(7) Test port for clutch pack 7
(8) Test port for clutch pack 8
(11) Fourteen mounting bolts
(12) Adjuster for clutch pack 4
(13) Locknut
(14) Adjustment screw for clutch pack 4
(15) Adjuster for clutch pack 6
(16) Locknut
(17) Adjustment screw for clutch pack 6
(18) Adjuster for clutch pack 5
(19) Locknut
(20) Adjustment screw for clutch pack 5
(21) Adjustment screw for clutch pack 8
(22) Locknut
(23) Adjuster for clutch pack 8
(24) Cover
(25) Bolt
(26) Manifold - Remove fourteen mounting bolts (11) that are used to retain cover (24). The top three bolts cannot be removed without removing the entire valve. These bolts should just be loosened. Remove bolt (25) from the transmission control valve.
- Slide the 139-7050 Cover Plate under cover (24). The U-shaped slots should be facing upward so that the bolt holes line up with the holes in the plate.
- Tighten the mounting bolts (11) to
30 ± 4 N·m (22 ± 3 lb ft) . Tighten bolt (25) to a torque of30 ± 4 N·m (22 ± 3 lb ft) . - Install the pressure gauge on test port (8) and on test port (5).
- Operate the engine at high idle with the transmission control in NEUTRAL. Record the pressures from the gauges in Table 2. Remove the gauges.
- Install the pressure gauge on test port (6) and on test port (7).
- Operate the engine at high idle in FIRST GEAR FORWARD. Record the gauge pressures in Table 2. Remove the gauges.
- Install the pressure gauge on test port (4).
- Operate the engine at high idle in SECOND GEAR FORWARD. Record the gauge pressures in Table 2. Remove the gauges.
- Compare Table 2 to Table 3. If the initial pressures are not within specifications, proceed to Step 12.
- Install the pressure gauge on test port (6) and on test port (7).
- Operate the engine at high idle with the transmission control (lever) in FIRST GEAR FORWARD. Monitor the pressure.
- Loosen locknut (16) on adjuster (15). Also, loosen the locknut on the adjuster directly behind adjuster (23).
- Turn adjustment screw (17) in order to adjust the pressure of number six clutch pack. Turn adjustment screw directly behind adjuster (23) in order to adjust the pressure of number seven clutch pack. To lower the pressure, turn the adjustment screw clockwise. The adjustment screw will change the pressure approximately
132 kPa (19 psi) .Note: If the pressure of the clutch pack is not adjustable within the limits of the adjustment screw, turn the engine off. Remove manifold (26) in order to access the selector spool. Add or remove shims in order to adjust the pressure. Add or remove spacers in order to adjust the pressure. Refer to Table 4 for approximate pressure changes.
- Tighten locknut (16) and tighten the locknut below adjuster (23) to the specified torques. Refer to Specifications, "Power Train" for the specified torques.
- Shift the transmission control (lever) to the NEUTRAL position for a minimum of 15 seconds. Then shift the transmission control (lever) back to FIRST GEAR FORWARD. Recheck the pressure gauge readings. Remove the gauges.
- Install the pressure gauge on test port (5) and on test port (8).
- Operate the engine at high idle with the transmission control in the NEUTRAL position.
- Loosen locknut (19) on adjuster (18). Also, loosen locknut (22) on the adjuster (23).
- Turn adjustment screw (20) in order to adjust the pressure of number five clutch pack. Turn adjustment screw (21) in order to adjust the pressure of number eight clutch pack. To lower the pressure, turn the adjustment screw clockwise. The adjustment screw will change the pressure approximately
132 kPa (19 psi) .Note: If the pressure of the clutch pack cannot be adjusted within the limits of the adjustment screw, turn the engine off. Remove manifold (26) in order to access the selector spool. Add or remove shims in order to adjust the pressure. Add or remove spacers in order to adjust the pressure. Refer to Table 4 for approximate pressure changes.
- Install the pressure gauge on test port (4).
- Operate the engine at high idle with the transmission control (lever) in SECOND GEAR FORWARD.
- Loosen locknut (13) on adjuster (12).
- Turn adjustment screw (14) in order to adjust the pressure of number four clutch pack. To lower the pressure, turn the adjustment screw clockwise. The adjustment screw will change the pressure approximately
132 kPa (19 psi) .Note: If the pressure of the clutch pack cannot be adjusted within the limits of the adjustment screw, turn the engine off. Remove manifold (26) in order to access the selector spool. Add or remove shims in order to adjust the pressure. Add or remove spacers in order to adjust the pressure. Refer to Table 4 for approximate pressure changes.
- Shift the transmission control (lever) to the NEUTRAL position for a minimum of 15 seconds. Then shift the transmission control (lever) back to SECOND GEAR FORWARD. Recheck the pressure gauge readings. Remove the gauges.
- Stop the engine. Remove the 139-7050 Cover Plate.
- Install new 9P-9150 Washers and install the transmission control valve on the transmission. Tighten bolts (11) and bolt (25) to the specified torques. Refer to Specifications, "Power Train" for the specified torques.
- In order to verify the clutch pressures, refer to Systems Operation, Testing and Adjusting, "Transmission Pressures - Test and Adjust".
- Install the drive shaft.
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| Illustration 1 | g00904023 |
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(9) Cover for the transmission control valve
(10) Transmission | |
