Transmission Specifications
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| Illustration 1 | g00714948 |
Transmission Hydraulic Controls | |
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| Illustration 2 | g00714976 |
(B) Pressure tap for converter inlet (P3) (D) Pressure tap for speed clutch (P1) (E) Pressure tap for direction clutch (P2) (F) Pressure tap for transmission lubrication | |
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| Illustration 3 | g00714983 |
(G) Steering clutch and brake lubrication | |
| Transmission Pressures | ||||
|---|---|---|---|---|
| Item | Pressure Tap | Pressure at Low Idle | Pressure at High Idle | Adjustment |
| A | Pressure tap for pump (priority valve) | 2900 ± 140 kPa (420 ± 20 psi) |
Add or remove spacers (25) in priority valve (1). See Table 3. | |
| B | Pressure tap for converter inlet (P3) | 1000 kPa (145 psi) maximum pressure with cold oil |
None | |
| C | Pressure tap for converter outlet | 400 kPa (58 psi) (minimum pressure) Engaged brakes Selector lever in the THIRD SPEED FORWARD position Converter in a stall condition |
Add or remove spacers (24) in converter outlet relief valve (14). See Table 3. | |
| D | Pressure tap for speed clutch (P1) | Maximum of 345 kPa (50 psi) below the pressure at maximum RPM The selection lever is in any FORWARD or REVERSE speed. Load piston plug (N) is installed. |
2550 ± 105 kPa (370 ± 15 psi) pressure with the selector lever in any FORWARD or REVERSE speed. Load piston plug (N) is installed. |
There is no adjustment. The final pressure is controlled by the initial pressure setting. |
| E | Pressure tap for direction clutch (P2) | 380 ± 55 kPa (55 ± 8 psi) below the speed clutch pressure at pressure tap (B) The selector lever is in any FORWARD or REVERSE speed. Load piston plug (N) is installed. |
380 ± 55 kPa (55 ± 8 psi) below the speed clutch pressure at pressure tap (B) The selector lever is in any FORWARD or REVERSE speed. Load piston plug (N) is installed. |
There is no adjustment. the direction clutch pressure is controlled by the spring rate for the pressure differential valve spring. |
| F | Pressure tap for transmission lubrication oil | 12 kPa (1.5 psi) minimum |
130 ± 30 kPa (19 ± 4.5 psi) |
There is no adjustment. |
| G | Pressure tap for steering and brake lubrication | 115 kPa (17 psi) |
There is no adjustment. | |
| Pressure Differential Valve Test | |
|---|---|
| Pressure Differential Valve Operation | While the engine is not running, move the direction selection lever to any position except the NEUTRAL position. Start the engine and run the engine at HIGH IDLE. The direction clutch pressure (P2) must be 0 kPa (0 psi). The speed clutch pressure (P1) must be 2550 ± 105 kPa (370 ± 15 psi). Move the direction selection lever to the NEUTRAL position. Then move the lever to the THIRD SPEED FORWARD or REVERSE positions. The direction clutch pressure (P2) must be 380 ± 55 kPa (55 ± 8 psi) below the pressure off the speed clutch. |
Note: If the machine is equipped with a neutral start switch, the transmission control lever must be in the NEUTRAL position before the starter can be engaged in order to start the engine.
Bench Test Specifications for the Transmission and Oil Pump
Type ... Gear
Number of sections ... Three
Rotation of pump (drive end) ... Counterclockwise
Note: The following values are with SAE 10W oil at 49 °C (120 °F).
Output of the transmission and the torque converter section
- Minimum output ... 57 L/min (15 US gpm)
- Pump speed ... 1800 RPM
- Pressure ... 3100 kPa (450 psi)
- Pump speed ... 1800 RPM
Output of steering clutch and brake lubrication section
- Minimum output ... 152 L/min (40 US gpm)
- Pump speed ... 1800 RPM
- Pressure ... 345 kPa (50 psi)
- Pump speed ... 1800 RPM
Output of torque converter scavenge section
- Minimum output ... 53 L/min (14 US gpm)
- Pump speed ... 1800 RPM
- Pressure ... 70 kPa (10 psi)
- Pump speed ... 1800 RPM
The following table provides the information that is needed to change the pressure in the transmission oil pump. Use the appropriate spacer to change the pressure to the value that is required.
| Spacers | |||
|---|---|---|---|
| Part Number for Spacer | Thickness | Change in Pressure | Location |
| 5M-9622 (1) | 1.60 mm (0.063 inch) |
98 kPa (14.2 psi) |
Load piston (12) |
| 5M-9623 (1) | 0.90 mm (0.035 inch) |
57 kPa (8.3 psi) |
|
| 5M-9624 (1) | 0.25 mm (0.010 inch) |
16 kPa (2.3 psi) |
|
| 4M-1751 (2) | 0.40 mm (0.016 inch) |
19 kPa (2.7 psi) |
Converter outlet relief valve (13) |
| 5S-7001 (2) | 0.90 mm (0.036 inch) |
40 kPa (20.4 psi) |
|
| 4M-1751 (3) | 0.40 mm (0.016 inch) |
140 kPa (20.4 psi) |
Priority valve (1) |
| 5J-2722 (3) | 1.20 mm (0.048 inch) |
420 kPa (61.3 psi) |
|
| ( 1 ) | See spacer (23) in Illustration 4. |
| ( 2 ) | See spacer (24) in Illustration 5. |
| ( 3 ) | See spacer (25) in Illustration 7. |
Note: Before an adjustment is made, make sure that the valve spring is not weak or broken.
| Speed Selection | Engaged Clutches in the Transmission |
|---|---|
| Neutral | 3 |
| First speed forward | 2 and 5 |
| Second speed forward | 2 and 4 |
| Third speed forward | 2 and 3 |
| First speed reverse | 1 and 5 |
| Second speed reverse | 1 and 4 |
| Third speed reverse | 1 and 3 |
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| Illustration 4 | g00709896 |
Transmission Hydraulic Control Valve (5) Body of selector and pressure control valve (12) Load piston (23) Spacers | |
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| Illustration 5 | g00709901 |
Outlet Relief Valve for Torque Converter (13) Relief valve for converter outlet (24) Spacers | |
Note: The priority valve is located under the cover.
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| Illustration 6 | g00709904 |
Location of Priority Valve (1) Priority Valve (4) Oil filter | |
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| Illustration 7 | g00709906 |
The Priority Valve is Located in the Oil Filter Housing. (1) Priority valve (25) Spacers | |