Diesel Data: Automotive Repair

Removal and Installation

Overview

Caution: The rear disc brake rotors used on this vehicle are made from an aluminum silica carbide alloy. For this reason, only Mopar original equipment manufacturer (OEM) replacement brake shoes using the OEM friction material are to be used when brake shoe replacement is required. If brake shoes using friction material other then the OEM friction material are used with the aluminum rotors, severe scoring of the rotor braking surfaces will occur. If the braking surfaces of the rotor become scored replacement of the rotor will be required. The rear disc brake rotor used on this vehicle can not be machined.

WARNING: ALTHOUGH FACTORY INSTALLED BRAKE LININGS USED ON THIS VEHICLE ARE MADE FROM ASBESTOS FREE MATERIALS, SOME AFTER MARKET BRAKE LINING MAY CONTAIN ASBESTOS. THIS SHOULD BE TAKEN INTO ACCOUNT WHEN SERVICING A VEHICLE'S BRAKE SYSTEM, WHEN AFTERMARKET BRAKE LININGS MAY HAVE BEEN INSTALLED ON THE VEHICLE. ALWAYS WEAR A RESPIRATOR WHEN CLEANING BRAKE COMPONENTS AS ASBESTOS CAN CAUSE SERIOUS BODILY HARM SUCH AS ASBESTOSIS AND OR CANCER. NEVER CLEAN BRAKE COMPONENTS BY USING COMPRESSED AIR, USE ONLY A VACUUM CLEANER SPECIFICALLY DESIGNED FOR THE REMOVAL OF BRAKE DUST. IF A VACUUM CLEANER IS NOT AVAILABLE, CLEAN BRAKE PARTS USING ONLY WATER DAMPENED SHOP TOWELS. DO NOT CREATE BRAKE LINING DUST BY SANDING BRAKE LININGS WHEN SERVICING A VEHICLE. DISPOSE OF ALL DUST AND DIRT SUSPECTED OF CONTAINING ASBESTOS FIBERS USING ONLY SEALED AIRTIGHT BAGS OR CONTAINERS. FOLLOW ALL RECOMMENDED SAFETY PRACTICES PRESCRIBED BY THE OCCUPATIONAL SAFETY AND HEALTH ADMINISTRATION (OSHA) AND THE ENVIRONMENTAL PROTECTION AGENCY (EPA), FOR HANDLING AND DISPOSAL OF PRODUCTS CONTAINING ASBESTOS.

During service procedures, grease or any other foreign material must be kept off caliper assembly, surfaces of braking rotor and external surfaces of hub.
Handling of the braking rotor and caliper should be done in such a way as to avoid deformation of the rotor and scratching or nicking of the brake linings.
If inspection reveals that the square sectioned caliper piston seal is worn or damaged, it should be replaced immediately.
During removal and installation of a wheel and tire assembly, use care not to strike the caliper.

Note: Before vehicle is moved after any brake service work, pump the brake pedal several times to insure the vehicle has a firm brake pedal.

Remove
1. Raise vehicle on jackstands or centered on a hoist.

Wheel Center Cap Removal:





2. Remove the center cap from the wheel. Center cap is removed by inserting a trim stick into the notch on the center cap and prying it off the wheel.
3. Remove wheels and tires from vehicle.

Rear Caliper Mounting Bolts:





4. Remove the 2 bolts mounting rear brake caliper to caliper adapter.

Rear Brake Caliper Remove/Install:





5. Remove the disc brake caliper from the caliper adapter. Caliper is removed by first rotating the free end of the caliper away from the caliper adapter. Then with the free end of the caliper rotated away from the adapter, lift the caliper off the machined abutment on the adapter.

Correctly Supported Disc Brake Caliper:





6. Support disc brake caliper by hanging it from shock absorber bracket on the frame using wire. Do not let the flex hose support the weight of the brake caliper, damage to the flex hose can occur.

Removing Outboard Brake Shoe:





7. Remove outboard brake shoe from caliper using the following procedure. Pry each retaining clip on the brake shoe over the raised area on the caliper. Then slide the brake shoe off the caliper.

Inboard Brake Shoe:





8. Pull the inboard brake shoe away from the caliper piston until the retaining clip is out of the piston cavity..

Caliper Inspection
Check caliper for piston seal leaks (brake fluid in and around boot area and inboard lining) and for any ruptures of the piston dust boot. If boot is damaged, or fluid leak is visible, disassemble caliper and install a new seal and boot, (and piston if scored). Refer to Brake Caliper, Service and Repair, Disassembly And Assembly.
Check the caliper dust boot and caliper pin bushings to determine if they are in good condition. Replace if they are damaged, dry, or found to be brittle. Refer to Guide Pin Bushing Service in the Brake Caliper, Service and Repair, Disassembly And Assembly procedure.

Install

Note: Step 1 below is only required when installing a caliper after new brake shoes have been installed.

1. Completely retract piston into bore of caliper.
2. Lubricate both abutments on caliper adapter with a liberal amount of Mopar brake grease or an equivalent.

Caution: The rear disc brake rotors used on this vehicle are made from aluminum silica carbide alloy. For this reason, only Mopar original equipment manufacturer (OEM) replacement brake shoes using the OEM friction material are to be used when brake shoe replacement is required. If brake shoes using friction material other then the OEM friction material are used with the aluminum rotors, severe scoring of the rotor braking surfaces will occur. If the braking surfaces of the rotor become scored replacement of the rotor will be required. The rear disc brake rotor used on this vehicle can not be machined.

3. If equipped, remove protective paper from noise suppression gasket on inner and outer brake shoes.

Inboard Brake Shoe:





4. Install the inboard brake shoe into the caliper piston by firmly pressing it into the piston. Be sure inboard brake shoe is positioned squarely against the face of the caliper piston.

Installing Outboard Brake Shoe:





5. Slide the outboard brake shoe onto the caliper.

Caution: Use care when installing the caliper onto the caliper adapter so the seals on the caliper guide pin bushings do not get damaged.

6. Install disc brake caliper on caliper adapter, reversing the removal procedure.

Caution: When installing the caliper guide pin bolts be careful not to cross thread the bolts into the caliper adapter.

7. Install the caliper guide pin bolts. Tighten the guide pin bolts to a torque of 27 Nm (20 ft. lbs.).
8. Install the wheels and tires.
9. Tighten the wheel mounting stud nuts in proper sequence until all nuts are torqued to half of the specified torque. Then repeat the tightening sequence to the full specified torque of 135 Nm (100 ft. lbs.).
10. Install the center cap on the wheel.
11. Remove jackstands or lower hoist.

Note: Before moving vehicle, pump the brake pedal several times to insure the vehicle has a firm brake pedal.

12. Road test the vehicle and make several stops to wear off any foreign material on the brakes and to seat the brake pads.