HOUSING AS 1166655 - Caterpillar

Table 1
Required Tools    
Part Number    Part Description    Qty    
4C-4890     Hydraulic Test Group     1    
Ensure that the oil is at operating temperature. Refer to Systems Operation, Testing and Adjusting, "Machine Preparation for Troubleshooting" for information on warming the oil.
Park the machine on a level surface. Move the transmission control to the NEUTRAL position and move the parking brake control to the ENGAGED position. Shut off the engine.
Install the steering frame lock. Refer to Operation and Maintenance Manual, "Steering Frame Lock".
Block the wheels of the machine.
Install a 34500 kPa (5000 psi) pressure gauge to the test port for the parking brake system.ReferenceRefer to Testing and Adjusting, "General information" for the location of the test fitting for the machine that is being tested.
Start the engine and operate the engine at low idle for one minute in order to fully charge the brake system.
Move the parking brake control to the DISENGAGED position.
Read the pressure gauge. The pressure should be 17250 4150 kPa (2500 600 psi).
If the pressure is insufficient then the parking brake may not fully disengage. Refer to Testing and Adjusting, "Braking System Troubleshooting".
Shut off the engine and remove the pressure gauge from the machine.
Remove the steering frame lock. Refer to Operation and Maintenance Manual, "Steering Frame Lock".