MANIFOLD 9P1471 - Caterpillar

Personal injury or death can result from sudden machine movement.Sudden movement of the machine can cause injury to persons on or near the machine.To prevent injury or death, make sure that the area around the machine is clear of personnel and obstructions before operating the machine.
Care must be taken to ensure that fluids are contained during performance of inspection, maintenance, testing, adjusting, and repair of the product. Be prepared to collect the fluid with suitable containers before opening any compartment or disassembling any component containing fluids.Refer to Special Publication, NENG2500, "Dealer Service Tool Catalog" for tools and supplies suitable to collect and contain fluids on Cat products.Dispose of all fluids according to local regulations and mandates.
Problem List For The Brake System
Problem List For The Service Brake
The service brakes do not operate.
The service brakes slip.
The service brakes are not applied evenly.
Too much force needed to push the brake pedal.Problem List For The Parking Brake
The parking brake does not hold the machine stationary.
The parking brake does not engage when the parking brake control lever is actuated.
The engine is running and the parking brake is in the ENGAGED position. However, the parking brake alarm does not sound when the transmission is put into the FORWARD direction or into the REVERSE direction.Probable Causes To The Problems Of The Brake System
Probable Causes To Problems Of The Service Brake
Problem 1The service brakes do not operate.Probable causes
The brake group within the axle housing is damaged.
The lines to the service brakes are obstructed.Problem 2The service brakes slip.Probable causes
Incorrect additives added to the oil in the axle.
The brake discs in the axle housing are worn.Problem 3The service brakes are not applied evenly.Probable causes
The brake discs and associated components in the axle housing are excessively worn.
The service brake valve is sticking because of contaminated oil.
The service brake valve is not delivering the correct amount of pressure.Problem 4Too much force needed to push the brake pedal.Probable causes
The brake pedals and/or brake pedal linkages are damaged.
The service brake valve is sticking because of contaminated oil.Probable Causes To The Problems Of The Parking Brake
Problem 1The parking brake does not hold the machine stationary.Probable causes
The parking brake is out of adjustment.
The brake linings are worn.
There is grease or oil on the brake disc and/or on the brake lining.Problem 2The parking brake does not engage when the parking brake control lever is actuated.Probable causes
The parking brake cable is disconnected.
The parking brake cable has stretched until the cable will not actuate the parking brake.
The parking brake is out of adjustment.Problem 3The engine is running and the parking brake is in the ENGAGED position. However, the parking brake alarm does not sound when the transmission is put into the FORWARD direction or into the REVERSE direction.Probable causes
The action alarm has failed.
The display has failed
The parking brake switch has failed.
The transmission shifter has failed.
The parking brake alarm relay has failed or ground connection to the relay is failed.