Hummer H1 Service Manual page 450

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Installation
1. Install a washer and coupling to caliper (Figure 7-6).
WARNING: Ensure brake pads are installed with lin-
ings facing rotor. Failure to do this will cause poor per-
formance and damage to equipment and may result in
injury.
2. Position brake pads on adapter (Figure 7-7).
TAPPED HOLE
BRAKE PAD
BRAKE
LINE/HOSE
COUPLING
COPPER
WASHER
CALIPER
Figure 7-7: Service Brake Components
3. Apply a non-hardening thread-locking compound to
threads of caliper guide pins and install pins into yoke (if
removed during cleaning and inspection). Tighten caliper
guide pins to 30 lb-ft (41 N•m).
4. Lubricate caliper guide pins, sleeves and adapter slides
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with Permatex Ultra Disc Brake Caliper Lube prior to
installation.
5. Position caliper onto yoke.
NOTE: When installing calipers, use a suitable tool to bottom
out piston in caliper if needed.
6. Apply thread-locking compound to tapped holes of
adapter. Using crowfoot, secure yoke and caliper to
adapter with two washers and capscrews. Tighten two
capscrews to 40 lb-ft (54 N•m).
7. Connect brake line to coupling.
8. Bleed brake system.
05745159
ADAPTER
BRAKE PAD
YOKE
CALIPER
GUIDE PINS
MASTER CYLINDER REPLACEMENT
Removal
CAUTION: Cover or plug all open connections immediately
after disconnecting to prevent contamination
NOTE: Have drainage container ready to catch brake fluid.
1. Disconnect front and rear brake lines from master cylinder
(Figure 7-8).
CAUTION: Do not apply excessive pressure or force on mas-
ter cylinder.
2. Remove two locknuts and master cylinder from hydro-
boost. Discard locknuts (Figure 7-8).
Installation
1. Bench-bleed master cylinder.
HYDRO-BOOST
RIGHT MASTER
CYLINDER
MOUNTING STUD
BRAKE
Figure 7-8: Master Cylinder
2. Install master cylinder to hydro-boost with two locknuts.
Tighten locknuts to 22 lb-ft (30 N•m) (Figure 7-8).
3. Install front and rear brake lines to master cylinder.
Position front and rear brake lines with a minimum of 1/2"
clearance to the hydro-boost accumulator and the right
rear modulator output line. Clearance between the front
and rear lines is also 1/2" minimum.
Brake System 7-11
MASTER
CYLINDER
FRONT
REAR
BRAKE
LINE LINE
4-1-00