Hummer H3. Manual - part 1330

10.42-10.79 mm (0.410-0.425 in) flare diameter for 7.94 mm (5/16 in) diameter pipe

33. If necessary, using the removed section of brake pipe as a template, shape the new pipe with

a suitable brake pipe bending tool.

34. Install the pipe to the vehicle with the appropriate brake pipe unions, as required.

35. If previously released, secure the brake pipe to the retainers.

36. Bleed the hydraulic brake system. Refer to Hydraulic Brake System Bleeding (Manual

without RPO BRM) or Hydraulic Brake System Bleeding (Pressure with RPO
BRM).

37. With the aid of an assistant, inspect the brake pipe flares for leaks by starting the engine and

applying the brakes.

FRONT BRAKE HOSE REPLACEMENT

Removal Procedure

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

2. Remove the tire and wheel assembly. Refer to Tire and Wheel Removal and

Installation .

3. Clean all dirt and foreign material from the brake hose and brake pipe fittings.

IMPORTANT: When installing the pipe, maintain a clearance of 19 mm (3/4

in) from all moving or vibrating components.

CAUTION: Refer to Brake Fluid Irritant Caution .

NOTE:

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

2007 Hummer H3

2007 BRAKES Hydraulic Brakes - H3

Fig. 31: Brake Pipe Fitting Removal/Installation
Courtesy of GENERAL MOTORS CORP.

4. Using a backup wrench on the hose fitting, disconnect the brake pipe fitting (2) from the

brake hose (3), then cap or plug the brake pipe fitting end.

5. Remove the brake hose retaining clip (1).

IMPORTANT: Install a rubber cap or plug to the exposed brake pipe fitting

ends in order to prevent brake fluid loss and contamination.

2007 Hummer H3

2007 BRAKES Hydraulic Brakes - H3

Fig. 32: Identifying Brake Hose Bracket Bolt
Courtesy of GENERAL MOTORS CORP.

6. Remove the brake hose bracket bolt and the bracket from the upper control arm.

2007 Hummer H3

2007 BRAKES Hydraulic Brakes - H3

Fig. 33: Locating Brake Hose At Brake Caliper
Courtesy of GENERAL MOTORS CORP.

7. Remove the brake hose bolt from the brake caliper.

8. Remove the brake hose from the brake caliper.

9. Remove and discard the 2 copper brake hose gaskets. These gaskets may be stuck to the

brake caliper housing or the brake hose end.

Installation Procedure

2007 Hummer H3

2007 BRAKES Hydraulic Brakes - H3