HOSE 3855631 - Caterpillar

Power Shift Transmission
All tests and adjustments must be made with the oil in the hydraulic control system at normal operating temperature. Be sure the linkage adjustments are correct before making any tests.
HYDRAULIC CONTROLS IN FIRST SPEED REVERSE (No. 2 and No. 5 Clutches Engaged) 1. Body for direction selector valves.2. Direction selector valve.3. Hydraulic controls for steering clutches and brakes.4. Speed selector valve.5. Body for speed selector valve.6. Protective valve.7. Body for priority valve.8. Priority valve.9. Oil passage.10. Oil filter.11. Converter inlet relief valve.12. Lubrication line to rear of transmission.13. Lubrication line to front of transmission.14. Body for pressure control valve.15. Pressure differential valve.16. Check valve.17. Oil cooler.18. Transmission oil pump.19. Body for converter outlet relief valve.20. Modulation relief valve.21. Load piston.22. Magnetic screen.23. Converter outlet relief valve.24. Circulating section of oil pump.25. Torque converter.26. Scavenge section of oil pump.27. Lubrication line for brake cooling.28. Oil reservoir.29. Oil reservoir.A. Pressure tap for transmission oil pump.B. Pressure tap for speed clutch (P1).C. Pressure tap for direction clutch (P2).D. Pressure tap for transmission oil pump.E. Pressure tap for lubrication.F. Pressure tap for speed clutch (P1).G. Pressure tap for transmission oil pump.H. Pressure tap for converter outlet.C1. No. 1 clutch.C2. No. 2 clutch.C3. No. 3 clutch.C4. No. 4 clutch.C5. No. 5 clutch.
When tests must be done in a closed area, activate the brakes and use blocks to prevent the machine from moving during the tests. Let only approved personnel on the machine. Keep other personnel off the machine and in view of the operator.
Do not operate the machine with the universal joint removed. The force of hydraulic pressure on the output shaft will cause the shaft to move out of the torque divider. The result is a rapid loss of hydraulic oil.
(EARLIER)
(LATER) 1P4145 PRESSURE CONTROL VALVE
14. Body for pressure control valve. 15. Pressure differential valve. 16. Check valve. 20. Modulation relief valve. 21. Load piston. 30. Spacers.
6P3554 PRIORITY VALVE
7. Body. 8. Priority valve. 33. Spacers.
3P7665 RELIEF VALVE FOR CONVERTER OUTLET
19. Body for converter outlet relief valve. 23. Converter outlet relief valve. 31. Spacers.
6P994 DIRECTION VALVE
1. Body. 11. Converter inlet relief valve. 32. Spacers. Location Of The Pressure Taps And Transmission Testing
A. Transmission oil pump. B. Speed clutch.
C. Direction clutch. F. Speed clutch.
D. and G. Transmission oil pump.
E. Lubrication.
H. Converter outlet.
K. Left brake control. L. Left steering clutch. M. Right steering clutch. N. Right brake control. Tests For Steering Clutch And Brake Controls Linkage Adjustment
Do not make any adjustments to the linkage with the engine running.
Inside Adjustment
1. Move the selector lever to the NEUTRAL position.
INSIDE LINKAGE ADJUSTMENT
1. Detent. 2. Lever. 3. Spool for speed selection. 4. Nut. 5. Lever. 6. Nut. 7. Protective valve. 8. Detent. 9. Nut. 10. Spool for direction selection. A. Face of selector valve. B. and C. Faces of protective and direction valve. R. Reverse notch of lever. N. Neutral notch of lever.2. Make sure detent (8) is engaged in the NEUTRAL