Hummer H3. Manual — part 1044

Fig. 17: Brake Caliper Replacement - Rear
Courtesy of GENERAL MOTORS CORP.

Rear Brake Caliper Replacement

Callout

Component Name

CAUTION:

Refer to Bleed Procedure Caution .

CAUTION:

Refer to Brake Dust Caution .

CAUTION:

Refer to Brake Fluid Irritant Caution .

NOTE:

Refer to Brake Fluid Effects on Paint and Electrical Components Notice .

2007 Hummer H3

2007 BRAKES Disc Brakes - H3

FRONT BRAKE CALIPER OVERHAUL (WITHOUT RPO BRM)

Fastener Tightening Specifications: Refer to Fastener Tightening Specifications.

Preliminary Procedure

Raise and support the vehicle. Refer to Lifting and Jacking the Vehicle .

Remove the tire and wheel. Refer to Tire and Wheel Removal and Installation .

NOTE:

Refer to Fastener Notice .

1

Brake Hose Bolt

Tighten: 40 N.m (30 lb ft)

2

Brake Hose Washer (Qty: 2)
Tip: Install the new brake hose bolt washers. Do not reuse the brake hose
bolt washers.

3

Rear Brake Hose
Tip: Cap or plug the brake hose to prevent fluid loss and contamination for
the brake system.

4

Brake Caliper Bolt (Qty: 2)
Tip: If removing the brake caliper to service the brake system, note that the
rear or trailing slide bolt for the brake caliper bolt has an O-ring and is a
smaller size bolt. DO NOT interchange the front or rear slide bolts.

Tighten: 36 N.m (27 lb ft)

5

Rear Brake Caliper
Tip: Bleed the brake system anytime the system is opened for repairs. Refer
to Hydraulic Brake System Bleeding (Manual) or Hydraulic Brake
System Bleeding (Pressure) .

2007 Hummer H3

2007 BRAKES Disc Brakes - H3

Fig. 18: Brake Caliper Overhaul - Front
Courtesy of GENERAL MOTORS CORP.

Front Brake Caliper Overhaul (without RPO BRM)

Callout

Component Name

CAUTION:

Refer to Bleed Procedure Caution .

CAUTION:

Refer to Brake Dust Caution .

CAUTION:

Refer to Brake Fluid Irritant Caution .

2007 Hummer H3

2007 BRAKES Disc Brakes - H3

Fastener Tightening Specifications: Refer to Fastener Tightening Specifications.

Preliminary Procedure

1. Raise the vehicle. Refer to Lifting and Jacking the Vehicle .

2. Remove the front disc brake caliper. Refer to Front Brake Caliper Replacement.

CAUTION:

Refer to Eye Protection Caution .

NOTE:

Refer to Brake Fluid Effects on Paint and Electrical Components Notice .

NOTE:

Refer to Fastener Notice .

1

Front Brake Bleeder Valve Cap

2

Front Brake Bleeder Valve Screw

Tighten: 10 N.m (89 lb in)

3

Front Disc Brake Caliper Piston Boot (Qty: 4)

4

Front Disc Brake Caliper Piston (Qty: 4)
Tip:

Wear eye protection while performing these steps.

Do not use abrasives to clean the brake caliper piston or the disc brake
caliper bore.

Place a block of wood against the inside of the caliper body, opposite
of the caliper piston, then direct low pressure compressed air through
the caliper inlet port to remove the caliper piston. Repeat for each of
the pistons, until all the pistons are removed from the caliper bores.

During installation apply a thin coat of Delco® Supreme 11 GM P/N
12377967 (Canadian P/N 992667) or equivalent DOT-3 brake fluid
from a clean, sealed brake fluid container onto the outer surface area of
the caliper pistons.

5

Front Disc Brake Caliper Piston Seal (Qty: 4)
Tip:

1. Use a small wooden or plastic tool, carefully remove the rear disc

brake caliper piston seal from the groove in the caliper seal bore.

2007 Hummer H3

2007 BRAKES Disc Brakes - H3