SEAL A 8T8245 - Caterpillar

Illustration 1 g00284487
Right Console (1) Keypad.
Illustration 2 g00286975
Front Dash (2) Diagnostic message screen.
Press the "OK" key on keypad (1) repeatedly. The hourmeter will be displayed on the diagnostic message screen (2) .
Enter "SERV" on the keypad and then press the "OK" key. Press the ">" key until the diagnostic message screen displays the following message:
Table 1
IMPL RLF - VAR PUMP    
Press the "OK" key. The following message will be displayed on the diagnostic message screen:
Table 2
IMPL RLF - VAR PUMP
PRESS "OK" TO START    
Press the "OK" key. The following messages will be displayed on the diagnostic message screen:
Table 3
RLF PRES CHECK MODE
IS TURNED ON    
RIGHT VALVE ONLY
WILL BE COMMANDED    
PROCEED W/ STANDARD
SERVICE CHECKS    The following message will alternate with the previous message in five second intervals:
Table 4
PRESS "<" OR ">"
TO SEE SPEC LIST    Note: The displayed specifications on the diagnostic message screen are the expected results for the test. The specifications in the service manual may not agree with the specifications on the diagnostic message screen. The service personnel should use the specifications that are displayed on the diagnostic message screen for testing. These specifications could be changed by future updates in the software for the implement ECM.Note: The following specifications are listed on the diagnostic message screen:
The setting for the high pressure cutoff on the variable displacement pump
The pressure setting for the dump line relief valves
The lift time for the bucket with the variable displacement pump
The torque converter stall speed
The double stall speed for the variable displacement pump
The setting for the variable displacement pump backup relief valve pressure
Personal injury or death can result from machine movement.When tests and adjustments are made to the transmission or the torque converter, the parking brake must be disengaged.To prevent movement of the machine and personal injury perform the procedure that follows.
Release the parking brake.
Fully depress the service brake pedal. Hold the brake pedal in this position for the duration of this test.
To make sure that the transmission oil does not overheat, do not keep the torque converter in a stall condition for more than 30 seconds. After the torque converter stall test, reduce engine speed to low idle, move the transmission control to neutral and increase the engine speed to approximately 1500 rpm to cool the oil.
Increase the engine speed to high idle.
Press the transmission shift control in order to select THIRD speed.
Move the transmission direction switch to the FORWARD position.
Allow the engine rpm to stabilize. Record the engine rpm. This is the torque converter stall speed.
Move the tilt lever to the TILT BACK position in order to tilt the bucket against the stops. Hold the lever in the TILT BACK position. The engine rpm will initially drop below the single stall speed. The engine rpm will then rise and the engine rpm will stabilize. Record the engine speed. This is the double stall speed of the variable displacement pump.
Move the tilt lever to the HOLD position. Reduce engine speed to low idle. Shift the transmission to