Hummer H1 (2002+). Manual - part 116

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 Brake System  7-23

®

05745159

RIGHT PARKING BRAKE CABLE REPLACEMENT

Removal 

1.

Put transmission in PARK, chock wheels, and release 
parking brake.

2.

Remove cotter pin, washer, clevis pin, and brake clevis
from lever. Discard cotter pin (Figure 7-26).

3.

Remove clip securing cable sleeve to caliper cable bracket
and remove parking brake cable assembly from caliper
cable bracket. Discard clip.

4.

Slide parking brake cable through parking brake cable
assembly. Remove clip securing cable sleeve to C-beam.
Disconnect parking brake cable from equalizer bar.
Discard clip.

5.

Remove two capscrews securing two clamps and parking
brake cable assembly to frame.

6.

Remove capscrew, lockwasher, and clamp from bracket.
Discard lockwasher.

NOTE: 

Perform step 7 if bracket is damaged. If not replacing

bracket, proceed to installation. Note position of cable, bracket,
and clamp prior to removal.

7.

Remove two capscrews and bracket from support bracket.

Installation 

NOTE: 

Perform step 1 if clamp bracket was removed, if not,

proceed to step 2.

1.

Rotate bracket inward on support bracket and secure with 
two capscrews.

2.

Install clamp on parking brake cable assembly and install
clamp to bracket with lockwasher and capscrew.

3.

Install two clamps on parking brake cable assembly and
install clamps on frame with two capscrews.

4.

Install cable sleeve on C-beam and parking brake cable on
equalizer bar and secure with cable clip.

CAUTION:  Ensure that the caliper cable bracket is secure
with no signs of looseness and the lever is in contact with the
caliper cable bracket stop. Damage to equipment and poor
performance will result if not aligned properly.

5.

Install cable sleeve on caliper cable bracket with brake
cable clip.

6.

Install brake clevis on lever with clevis pin, washer, and
cotter pin.

7.

Adjust parking brake lever.

Figure 7-26:   Right Parking Brake Cable Components

PARKING BRAKE 

SUPPORT BRACKET

CALIPER CABLE

CALIPER 

BRACKET 

LEVER

PARKING

BRAKE CLEVIS

CLEVIS PIN

BRACKET

CABLE SLEEVE

FRAME

CABLE SLEEVE

CLIP

EQUALIZER BAR

C-BEAM

CABLE

STOP

BRACKET

CABLE ASSEMBLY

CLIP

BRAKE CABLE

PARKING

BRAKE CABLE

7-24

Brake System

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®

LEFT PARKING BRAKE CABLE REPLACEMENT

Removal 

1.

Put transmission in PARK, chock wheels, and release 
parking brake.

2.

Remove cotter pin, washer, clevis pin, and brake clevis
from lever. Discard cotter pin (Figure 7-27).

3.

Remove clip and cable sleeve from caliper cable bracket.
Discard clip.

4.

Slide parking brake cable through parking brake cable
assembly. Remove clip securing cable sleeve to C-beam.
Disconnect parking brake cable from equalizer bar.
Discard clip.

5.

Remove capscrew, washer, nut and lockwasher assembly
and washer securing clamp to mounting bracket and
parking brake cable assembly. Discard nut and lockwasher
assembly.

6.

Remove capscrew, lockwasher, clamp, and parking brake
cable assembly from bracket. Discard lockwasher.

NOTE: 

Perform step 7 if clamp bracket is damaged. If not re-

placing bracket, proceed to installation. Note position of cable,
bracket, and clamp prior to removal.

7.

Remove two capscrews and bracket from support bracket.

Installation 

NOTE: 

Perform step 1 if clamp bracket was removed. If not,

proceed to step 2.

1.

Rotate bracket inward on support bracket and secure with 
two capscrews (Figure 7-27).

2.

Install clamp on parking brake cable assembly and bracket
with lockwasher and capscrew.

3.

Install clamp on parking brake cable assembly and
mounting bracket with washer, capscrew, washer, and nut
and lockwasher assembly.

4.

Install cable sleeve on C-beam and parking brake cable to
equalizer bar and secure with clip.

CAUTION:  Ensure that the caliper cable bracket is secure
with no signs of looseness and the lever is in contact with the
caliper cable bracket stop. Damage to equipment and poor
performance will result if not aligned properly.

5.

Install cable sleeve on caliper cable bracket with clip.

6.

Install brake clevis on lever with clevis pin, washer, and
cotter pin.

7.

Adjust parking brake lever.

Figure 7-27:   Left Parking Brake Cable Components

PARKING BRAKE 

SUPPORT BRACKET

CALIPER CABLE

CALIPER 

BRACKET 

LEVER

PARKING BRAKE CABLE

BRAKE CLEVIS

CLEVIS 

BRACKET

CABLE 

CABLE SLEEVE

PARKING BRAKE CABLE

CLIP

EQUALIZER BAR

C-BEAM

CABLE

STOP

BRACKET

CABLE ASSEMBLY

SLEEVE

PIN

CLIP

MOUNTING
BRACKET

____________________________________________________________

 Brake System  7-25

®

05745159

PARKING BRAKE ROD REPLACEMENT

Removal 

1.

Put transmission in PARK, chock wheels, and release 
parking brake.

2.

Remove cotter pin, washer, clevis pin, and brake clevis
from lever. Discard cotter pin (Figure 7-28).

3.

Remove six clips and spread boot to allow access to cotter
pin (Figure 7-29).

4.

Remove cotter pin, washer, clevis pin, and clevis securing
brake rod to bellcrank. Discard cotter pin.

5.

Disconnect spring from bracket  (Figure 7-29).

6.

Remove locknut from conical washer, and brake rod from
equalizer bar. Discard locknut.

7.

Remove clevis, nut and spring from brake rod.

Installation 

1.

Install spring, nut, and clevis on brake rod.

2.

Install brake rod on equalizer bar with conical washer and
locknut. Tighten locknut far enough to expose 3-5 threads
on the end of brake rod.

3.

Connect spring to bracket.

4.

Spread boot and install clevis to bellcrank with clevis pin,
washer and cotter pin.

5.

Install six clips on boot.

CAUTION:  Ensure that the caliper cable bracket is secure
with no signs of looseness and the lever is in contact with the
caliper cable bracket stop.

6.

Install brake clevis on lever with clevis pin, washer, and
cotter pin (Figure 7-30).

7.

Adjust parking brake.

Figure 7-28:   Parking Brake Rod Attachment at

Caliper

PARKING BRAKE ADJUSTMENT

NOTE: 

The integral parking/service brake mechanism has an

automatic adjusting feature and does not require periodic man-
ual adjustment. When parking brake components or rear brake
pads are replaced, the parking brake linkage must be initially
positioned to ensure proper parking brake system operation.
The only additional adjustment necessary is accomplished with
the parking brake hand lever. 

Figure 7-29:   Parking Brake Rod Location

CALIPER CABLE BRACKET

CALIPER CABLE

BRACKET STOP

LEVER

BRAKE

CLEVIS

CLEVIS PIN

EQUALIZER BAR

SPRING

CLIP

BELLCRANK

BOOT

CLEVIS PIN

CLEVIS

FRAME

BRAKE ROD

BRACKET

CONICAL WASHER

1/2” ENGAGEMENT
TO EQUALIZE

7-26

Brake System

_____________________________________________________________

®

Adjustment 

1.

Put transmission in PARK, chock wheels, and release 
parking brake.

2.

Remove six clips and spread boot to allow access to cotter
pin (Figure 7-30).

3.

Remove cotter pin, washer, and clevis pin securing clevis
to bellcrank. Discard cotter pin.

4.

Repeatedly apply and adjust parking brake hand lever
until bellcrank linear travel is 0.75 in. (19 mm).

Figure 7-30:   Parking Brake Adjustment

CAUTION:  Holes in parking brake clevis must align with
holes in adjusting bellcrank without force for proper parking
brake adjustment. Failure to do this may result in damage to
equipment and poor performance.

5.

Release parking brake. Loosen nut and adjust clevis so
holes in clevis align with holes in bellcrank. Secure clevis
to bellcrank with clevis pin, washer, and cotter pin.

CAUTION: Do not overtighten parking brake rod. Overtight-
ening parking brake rod may result in dragging brakes.

6.

If necessary, remove excess slack in parking brake cables
by turning the parking brake rod clockwise or
counterclockwise into the clevis.

CAUTION:  Ensure that the caliper cable bracket is secure
with no signs of looseness and the lever is in contact with the
caliper cable bracket stop. Damage to equipment and poor
performance will result if not aligned properly.

NOTE: 

Perform step 7 on both sides of vehicle.

7.

Parking brake rod is properly adjusted if lever is in contact
with caliper cable bracket stop (Figure 7-31).

8.

Tighten nut against clevis.

9.

Install six clips in boot (Figure 7-30)

10. Adjust parking brake lever.

Figure 7-31:   Caliper Cable Bracket Stop 

PARKING BRAKE HAND LEVER REPLACEMENT

Removal 

1.

Put transmission in PARK, chock wheels, and release 
parking brake.

2.

Remove parking brake switch.

3.

Remove six clips and open lower boot to allow access to
clevis pin. Discard clips (Figure 7-32).

4.

Remove cotter pin, washer, and clevis pin from clevis and
bellcrank. Discard cotter pin.

5.

Remove nut and lockwasher assembly, wiring harness
clamp, nut and lockwasher assembly, and bolt securing
parking brake hand lever to body. Discard nut and
lockwasher assemblies (Figure 7-33).

6.

Remove three locknuts, washers, and bolts securing
parking brake hand lever to body. Discard locknuts.

7.

Remove two locknuts, washers, bolts, and washers
securing parking brake hand lever to body and remove
parking brake lever. Discard locknuts.

8.

Remove upper boot from parking brake hand lever.

9.

Remove boot from body.

BRAKE

BELLCRANK

BRAKE

0.75 in. 

CLIP

BOOT

BELLCRANK

CLEVIS PIN

CLEVIS

PARKING

BRAKE

ROD

(19 mm)

CALIPER CABLE

BRACKET STOP

CALIPER CABLE

BRACKET

LEVER