COMPRESSOR GP 5397101 - Caterpillar

Test Preparation - High Pressure Stall
Move the machine to a smooth horizontal location.
Engage the parking brake.
Start the engine. Warm the hydraulic oil to a minimum temperature of at least 65° C (150° F).
Lower all of the implements.
Stop the engine.
Turn the key to the ON position. Make sure that the implement lockout switch is turned to the UNLOCKED position. Move the implement control levers to all positions several times in order to release any pressure in the hydraulic system.
Remove the floor plate from the machine cab.
Illustration 3 g03394169
Implement Valve Group