Hummer H1 Service Manual page 457

7-18 Brake System
REAR DUAL SERVICE/PARKING BRAKE PAD
REPLACEMENT
Removal
1. Put transmission in PARK, chock wheels, and release
parking brake.
2. Remove cotter pin, washer, and clevis pin securing
parking brake cable to lever. Discard cotter pin
(Figure 7-18).
3. Remove clip securing parking brake cable to caliper cable
bracket and disconnect cable from caliper cable bracket.
Discard clip.
CAUTION: Caliper must be supported during removal to pre-
vent damage to brake line.
4. Remove two capscrews and washers securing yoke and
caliper to adapter, and pull yoke and caliper away from
rotor (Figure 7-19).
NOTE: Note positioning of brake pad surfaces for installation.
5. Remove two brake pads from adapter and rotor.
Cleaning and Inspection
NOTE: Clean all components, examine for wear or damage,
and replace if necessary.
1. Clean mating surfaces of caliper and adapter and lightly
lubricate adapter slides with brake component lubricant
(Figure 7-19).
PARKING BRAKE
CABLE
CLEVIS PIN
Figure 7-18: Rear Dual Brake Components
_____________________________________________________________
CALIPER CABLE
BRACKET
CLIP
LEVER
COTTER
PIN
WASHER
PARKING BRAKE
CLEVIS
TAPPED
HOLE
ROTOR
BRAKE PAD
CAP
SCREW
Figure 7-19: Rear Dual Brake Pad and Rotor
2. Inspect caliper and caliper piston face for pitting or
damage (Figure 7-20).
3. Inspect piston dust boot and bushings for tears or
deterioration.
4. Inspect caliper cable bracket for looseness, damage, and
rotation.
5. Thoroughly clean and inspect rotor for heat checks,
discoloration, pitting, or scoring (Figure 7-19).
CAUTION: Ensure that grease and oil are not in contact with
rotor and/or brake pad friction surface. Failure to do so will
result in damage to equipment and poor performance.
NOTE: Replace brake pads in sets only. If operation in wet
and muddy conditions is expected, replace brake pads if brake
lining thickness is less than 1/8 in. (3.2 mm).
6. Inspect brake pads for glazing, oil saturation, or wear. If
glazed, oil saturated, or if brake lining thickness is less
than 1/8 in. (3.2 mm), replace both pads and pads on
opposite caliper.
ADAPTER
ADAPTER SLIDE
BRAKE PAD
YOKE
CALIPER
®