Transmission Pressures - Test and Adjust
Location of Test Ports
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| Illustration 1 | g01681779 |
Top view of transmission (1) Plug for load piston "LP" (2) Plug for direction clutch "P2" (3) Plug for speed clutch "P1" | |
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| Illustration 2 | g01680673 |
Top view of transmission (4) Pressure tap for torque converter inlet (5) Pressure tap for transmission oil pump | |
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| Illustration 3 | g01682859 |
View of left rear of tractor (6) Pressure tap for torque converter outlet | |
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| Illustration 4 | g01681759 |
Front view of transmission (7) Pressure tap for transmission lubrication | |
Location of Spacers
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| Illustration 5 | g01642416 |
Selector and pressure control valve (8) Load piston (9) Spacers | |
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| Illustration 6 | g01642435 |
Torque converter outlet relief valve (10) Spacers | |
Specifications
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| Pressure | Test Port Location | Gear | Engine rpm (Low Idle) | Engine rpm (High Idle) | Adjustment |
| Transmission Oil Pump | (5) | NEUTRAL | Same as speed clutch pressure (P1) | None | |
| Initial Speed Clutch (P1) | (3) | NEUTRAL | Minimum pressure is 530 ± 20 kPa (77 ± 3 psi) with the selector in the NEUTRAL position. (1) | None | |
| Speed Clutch (P1) | (3) | SIXTH GEAR - REVERSE | With the selection lever in any FORWARD speed, the pressure is 2585 ± 105 kPa (375 ± 15 psi). (2) |
Add spacers (10) or remove spacers (10) . See the spacer chart. | |
| Direction Clutch (P2) | (2) | REVERSE, FIRST through SIXTH | High idle pressure must be 380 ± 55 kPa (55 ± 8 psi) less than Speed Clutch (P1) . (2) |
None | |
| Lubrication | (7) | NEUTRAL | 275 ± 69 kPa (40 ± 10 psi) |
None | |
| Torque Converter Outlet | (6) | NEUTRAL | With the installation of the drive shaft, the selection lever in NEUTRAL speed, the low idle pressure is 255 ± 69 kPa (37 ± 10 psi). |
Add spacers (12) or remove spacers (12) . See the spacer chart. | |
| Torque Converter Inlet (P3) | (4) | NEUTRAL | 930 kPa (135 psi) maximum |
None |
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| ( 1 ) | The load piston plug (1) is removed. |
| ( 2 ) | Ensure that load piston plug (1) is installed. |
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| Chart for Engaged Clutches | |
| Speed | Engaged Clutches |
| REVERSE | 1 and 6 |
| NEUTRAL | 4 |
| FIRST SPEED | 2 and 6 |
| SECOND SPEED | 3 and 6 |
| THIRD SPEED | 2 and 5 |
| FOURTH SPEED | 3 and 5 |
| FIFTH SPEED | 2 and 4 |
| SIXTH SPEED | 3 and 4 |
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| Spacer Chart for Transmission Hydraulic Control Valve for Load Piston (9) | ||
| Spacer Part Number (3) | Thickness | Change in Pressure |
| 5M-9622 | 1.60 mm (0.063 inch) |
98 kPa (14 psi) |
| 5M-9623 | 0.90 mm (0.035 inch) |
57 kPa (8 psi) |
| 5M-9624 | 0.25 mm (0.010 inch) |
16 kPa (2 psi) |
Note: Before an adjustment is made, make sure that the valve spring is not weak or broken.
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| Spacer Chart for Torque Converter Outlet Relief Valve (11) | ||
| Spacer Part Number (5) | Thickness | Change in Pressure |
| 4M-1751 | 0.41 mm (0.016 inch) |
19 kPa (3 psi) |
| 5S-7001 | 0.91 mm (0.036 inch) |
40 kPa (6 psi) |
Note: Before an adjustment is made, make sure that the valve spring is not weak or broken.
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