Where is the parking brake pump located on a J71 RV?
The PARKING BRAKE PUMP ASSEMBLY is located on a component box on the passenger side of the vehicle on 1999 and 2000 model year chassis. The component box is on the inside of the right frame rail behind the transmission. On 2001 and 2002 models, the pump assembly was moved to the front driver’s side of the radiator core support.
What’s the pressure on a parking brake pump?
A pressure relief valve in the pump limits system pressure to 1800 psi. The PARK BRAKE MOTOR SWITCH (pressure maintenance switch) mounts to the parking brake pump assembly housing. It is a hydraulic pressure switch that operates within a certain pressure range turning the pump motor on and off.
How does the J72 automatic parking brake work?
When the park brake motor switch supplies B+ to the relay switch, the contacts close to complete the feed circuit to the pump motor. The J72 system incorporates a unique full-circle parking brake. The automatic electric/hydraulic parking system controls the transmission/propeller shaft mounted parking brake.
How to troubleshoot PacBrake brake controller step 6?
Step 6: Compressor Troubleshooting(Air Pressure not found in Step 4): Check for continuity between the battery positive ring terminal contact and the correct side of the small black plug on the controller and from the compressor power to the other side of the black connector.
A pressure relief valve in the pump limits system pressure to 1800 psi. The PARK BRAKE MOTOR SWITCH (pressure maintenance switch) mounts to the parking brake pump assembly housing. It is a hydraulic pressure switch that operates within a certain pressure range turning the pump motor on and off.
The PARKING BRAKE PUMP ASSEMBLY is located on a component box on the passenger side of the vehicle on 1999 and 2000 model year chassis. The component box is on the inside of the right frame rail behind the transmission. On 2001 and 2002 models, the pump assembly was moved to the front driver’s side of the radiator core support.
What are the symptoms of a bad power brake booster?
If you notice the brake pedal is difficult to push, causes the engine to stall, or takes longer to stop the car, the power brake booster is failing. 1. Hard brake pedal
When the park brake motor switch supplies B+ to the relay switch, the contacts close to complete the feed circuit to the pump motor. The J72 system incorporates a unique full-circle parking brake. The automatic electric/hydraulic parking system controls the transmission/propeller shaft mounted parking brake.