Hummer H3. Manual — part 1340

CH-47830 Holding Fixture

Removal Procedure

1. Remove the brake master cylinder and power brake booster assembly. Refer to Brake

Master Cylinder with Power Brake Booster and Chassis Control Module
Replacement (LHD) or Brake Master Cylinder with Power Brake Booster and
Chassis Control Module Replacement (RHD) .

2. Install the CH-47830 to the master cylinder assembly.

3. Position the CH-47830 with the master cylinder assembly in a vise.

CAUTION: Refer to Brake Fluid Irritant Caution .

2007 Hummer H3

2007 BRAKES Hydraulic Brakes - H3

Fig. 48: View Of Brake Booster Inlet/Outlet Pipes
Courtesy of GENERAL MOTORS CORP.

4. Disconnect the power brake booster outlet pipe fittings (1).

5. Remove the power brake booster outlet pipe (2) from the hydraulic brake booster pump (3)

and the master cylinder (4).

Installation Procedure

NOTE:

Refer to Fastener Notice .

2007 Hummer H3

2007 BRAKES Hydraulic Brakes - H3

Fig. 49: View Of Brake Booster Inlet/Outlet Pipes
Courtesy of GENERAL MOTORS CORP.

1. Install the brake pipe fittings (1) of the power brake booster outlet front pipe (2) to the

hydraulic brake booster pump (3) and the brake master cylinder (4).

Tighten: Tighten the brake pipe fittings to 15 N.m (11 lb ft).

2. Remove the CH-47830 from the master cylinder assembly.

3. Install the brake master cylinder and power brake booster assembly. Refer to Brake

Master Cylinder with Power Brake Booster and Chassis Control Module

2007 Hummer H3

2007 BRAKES Hydraulic Brakes - H3

Replacement (LHD) or Brake Master Cylinder with Power Brake Booster and
Chassis Control Module Replacement (RHD) .

POWER BRAKE BOOSTER REPLACEMENT

Special Tools

CH-47830 Holding Fixture

Removal Procedure

1. Remove the brake master cylinder and power brake booster assembly. Refer to Brake

Master Cylinder with Power Brake Booster and Chassis Control Module
Replacement (LHD) or Brake Master Cylinder with Power Brake Booster and
Chassis Control Module Replacement (RHD) .

2. Install the CH-47830 to the master cylinder assembly.

3. Position the CH-47830 with the master cylinder assembly in a vise.

4. Remove the hydraulic brake booster accumulator. Refer to Hydraulic Brake Booster

Accumulator Replacement.

5. Remove the power brake booster inlet hose. Refer to Power Brake Booster Inlet Hose

Replacement.

6. Remove the power brake booster outlet front pipe. Refer to Power Brake Booster Outlet

Front Pipe Replacement.

2007 Hummer H3

2007 BRAKES Hydraulic Brakes - H3