TH62, TH63, TH82 and TH83 Telehandlers Braking System Caterpillar

Problem

Service Brake

The Service Brakes do not Operate

• Brake discs are excessively worn.

• The axle breather may be blocked.

• Air has entered the brake system.

• Oil leakage from lines and fittings.

• Oil leakage from the brake cylinder (master).

• Oil leakage from the brake cylinder (boost).

• Oil pressure from the brake cylinder (master) is low.

• Oil pressure from the brake cylinder (boost) is low.

• The brake components within the axle housing are damaged.

• Lines to the brake system are obstructed.

• The separation in the brake pack is too large.

Problem

Service Brake

Brakes Overheat

Probable Cause

• The oil level in the axle housing is low.

• The adjustment of the push rod on the brake cylinder (master) is incorrect.

• The separation in the brake pack is too small.

Problem

Service Brake

Noise and Vibration of the Brake Pedal

Probable Cause

• The brake discs are distorted or scored.

• The oil in the axle housing has been contaminated.

Problem

Service Brake

Brakes Slip

Probable Cause

• Incorrect additives added to the oil in the axles.

• The brake discs in the axle housing are worn.

Problem

Service Brake

The Service Brakes are not Applied Evenly

Probable Cause

• The brake discs and associated components in the axle housing are excessively worn.

• The brake cylinder (master) is sticking because of contaminated oil.

• The brake cylinder (boost) is sticking because of contaminated oil.

• The brake cylinder (master) is not delivering the correct amount of pressure.

• The brake cylinder (boost) is not delivering the correct amount of pressure.

• The differential oil needs to be replaced.

Problem

Service Brake

Too Much Force Needed to Push the Brake Pedal

Probable Cause

• The brake linkages are damaged.

• The pilot valve is sticking because of contaminated oil.

• A restriction in the brake line is present.

Problem

Parking Brake

The Parking Brake does not Hold the Machine Stationary

Probable Cause

• The parking brake is out of adjustment.

• The brake discs are worn.

• The movement of the park brake cable is restricted due to poor routing.

• The park brake cable has a bad connection.

Problem

Parking Brake

The Parking Brake does not Engage when the Parking Brake Control Lever is Actuated

Probable Cause

• The inner cable for the parking brake has seized.

• The inner cable for the parking brake has broken.

• The inner cable for the parking brake has stretched until the cable will not actuate the parking brake.

• Parking brake components have broken.

• The parking brake is out of adjustment.