SEAL KIT 0919842 - Caterpillar

Machine Preparation
Position the machine on level ground and stop the engine.
Release the pressure in the hydraulic system. Refer to Testing and Adjusting, "Hydraulic System Pressure - Release".
Illustration 2 g01217778
Pump compartment (1) Pressure tap (delivery pressure for drive pump) (2) Pressure tap (delivery pressure for idler pump) (3) Pressure tap (power shift pressure)
Attach a 41,368 kPa (6,000 psi) pressure sensor to pressure tap (1) .Test Procedure
Note: The main relief valve should have a 1000 kPa (145 psi) pressure difference between heavy lift mode and standard lift mode.
Start the engine.
Place the machine controls at the following settings: engine speed dial "10" and AEC switch OFF. Refer to Testing and Adjusting, "Engine Performance - Test (Engine Speed)" for engine rpm settings.
Illustration 3 g01201390
Switch panel (9) Heavy lift switch
Set heavy lift switch (9) to the ON setting. Make sure that the indicator light is on.
Increase the hydraulic oil temperature to 55° 5°C (131° 9°F).
Raise the boom until the boom cylinder rods are at full extension.
Check the pressure setting of the heavy lift at pressure