Fig. 8 Installing Caliper

(6) Install caliper attaching bolts and tighten to 22 NIm (193 in. lbs.) torque (Fig. 9).

Fig. 9 Installing Attaching Bolts

(7)Install wheel and tire assembly. Tighten stud nuts in proper sequence until all nuts are torqued to half specification. This is important. Then repeat sequence to full specification.

(8)Remove jackstands or lower hoist. Before moving vehicle be sure it has a firm pedal.

DISASSEMBLING REAR CALIPER ASSEMBLY

CLEANING AND INSPECTION

Check for piston fluid seal leaks (brake fluid in and around boot area and inboard lining) and for any

ruptures of piston dust boot. If boot is damaged, or fluid leak is visible, disassemble caliper assembly and install a new seal and boot, (and piston if scored). Refer to procedures titled Disassembling Caliper.

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 Caliper Service.

(1)Remove caliper from braking disc (See Brake Shoe Removal). Hang assembly on a wire hook away from braking disc, so hydraulic fluid cannot get on braking disc (See Fig. 4 in Brake Shoe Removal). Place a small piece of wood between the piston and caliper fingers.

(2)Carefully depress brake pedal to hydraulically push piston out of bore. (Brake pedal will fall away when piston has passed bore opening.) Then prop up the brake pedal to any position below the first inch of pedal travel, this will prevent loss of brake fluid from the master cylinder.

(3)If both front caliper pistons are to be removed, disconnect flexible brake line at frame bracket after removing piston. Plug brake tube and remove piston from opposite caliper. Using the same process as above for the first piston removal.

WARNING: UNDER NO CONDITION SHOULD AIR PRESSURE BE USED TO REMOVE PISTON FROM CALIPER BORE. PERSONAL INJURY COULD RESULT FROM SUCH A PRACTICE.

(4) Disconnect brake flexible hose from the caliper. To disassemble, mount caliper assembly in a vise equipped with protective jaws.

CAUTION: Excessive vise pressure will cause bore distortion and binding of piston.

Support rear caliper assembly in a vise. Then remove caliper to piston dust boot and discard (Fig. 1).

Using a plastic trim stick, work piston seal out of its groove in caliper piston bore (Fig. 2). Discard old seal. Do not use a screwdriver or other metal tool for this operation, because of the possibility of scratching piston bore or burring edges of seal groove.

The double pin caliper uses a sealed for life bushing and sleeve assembly. If required this assembly can be serviced using the following procedure.

(1) Using your fingers push on one end the inner sleeve until it pops out of the bushing. Then grasp the inner sleeve with your fingers and pull the inner sleeve out from the inside of the bushing (Fig. 3).