CYLINDER AS 2897995 - Caterpillar

Adjustments for the Transmission Clutch Pressure
If the pressure reading for each energized clutch is not within the values in Table 2 recalibrate the clutch. If the clutch can not be calibrated to specifications, the modulating valve for the transmission clutch solenoid may need to be replaced or the pump pressure may need adjustment.Note: The engagement pressure for a lockup clutch should be recalibrated whenever the engagement pressures for the transmission clutches are recalibrated. Refer to the "Topic Torque Converter Lockup Clutch Pressure - Test and Adjust".ReferenceFor additional information about calibrating the modulating valves for the transmission, refer to the Service Manual module Testing and Adjusting, RENR8342, " 773F and 775F Off-Highway Truck/Tractor and 775F Quarry Truck Chassis Electronic Control System", "Transmission Clutch Engagement Pressure Calibration" for the machine that is being serviced.ReferenceFor additional information about calibrating the modulating valves for the transmission clutch solenoid modulating valves, refer to the Service Manual module Testing and Adjusting, RENR8342, " 773F and 775F Off-Highway Truck/Tractor and 775F Quarry Truck Chassis Electronic Control System", "Fill Time for the Transmission Clutch - Calibrate" for the machine that is being serviced.Note: Calibration for clutch engagement may be performed on an individual transmission clutch or the lockup clutch. Fill calibration is performed on all the transmission clutches and the lockup clutch during the calibration.ReferenceFor additional information about electrical system troubleshooting, refer to the Service Manual module Testing and Adjusting, "Troubleshooting Diagnostic Codes" for the machine that is being serviced.Adjustment for the Pressure for the Transmission System
The transmission hydraulic control relief valve is located under the cover on the transmission.
Illustration 4 g01311923
Transmission hydraulic control relief valve (13) Cover
Illustration 5 g01311931
Transmission hydraulic control relief valve (14) Adjustment screwIf the pressure for the transmission system at pressure tap (8) is not within the values in Table 2, adjust the spring of the transmission hydraulic control relief valve. Use the following procedure.
Remove cover (13) .
Turn adjustment screw (14) in the proper direction.Turning the adjustment screw clockwise increases pump pressure. Turning the adjustment screw counterclockwise decreases pump pressure. One full turn of the adjustment screw changes pump pressure 160 kPa (23 psi).
Install cover (13) .
Check the transmission oil pump pressure again. Make sure that the transmission oil pump pressure is within the value in Table 2.Transmission and Torque Converter Pressures
Table 2
Transmission Pressures for the 773F and 775F Off-Highway Truck at Low Idle    
Pressure Tap     Specification    
(1) Number 1 clutch pressure    
2800 140 kPa (405 20 psi)    
(2) Number 2 clutch pressure     (1)    
(3) Number 3 clutch pressure     (1)    
(4) Number 4 clutch pressure    
2103 140 kPa (305 20 psi)    
(5) Number 5 clutch pressure     (1)    
(6) Number 6 clutch pressure    
2800 140 kPa (405 20 psi)    
(7) Number 7 clutch pressure    
2800 140 kPa (405 20 psi)    
(8) Pressure of the transmission system    
2800 140 kPa (405 20 psi)