Hummer H3. Manual — part 1052

Uses mechanical output force applied to friction surfaces from the disc brake pads to slow
speed of tire and wheel assembly rotation.

Disc Brake Pad Hardware

Secures disc brake pads firmly in proper relationship to the hydraulic brake calipers.
Enables a sliding motion of brake pads when mechanical output force is applied.

Disc Brake Caliper Hardware

Provides mounting for hydraulic brake caliper and secures the caliper firmly in proper
relationship to caliper bracket. Enables a sliding motion of the brake caliper to the brake
pads when mechanical output force is applied.

System Operation - Rear

Mechanical output force is applied from the hydraulic brake caliper pistons to the inner brake
pads. As the pistons press the inner brake pads outward, the caliper housings draw the outer brake
pads inward. This allows the output force to be equally distributed. The brake pads apply the
output force to the friction surfaces on both sides of the brake rotors, which slows the rotation of
the tire and wheel assemblies. The correct function of both the brake pad and brake caliper
hardware is essential for even distribution of braking force.

System Operation - Front

Mechanical output force is applied from the hydraulic brake caliper inboard and outboard pistons
to the inner and outer brake pads. The brake calipers are a fixed, opposed-piston design, allowing
the output force to be equally distributed through the distribution of the pressurized brake fluid
within the caliper. The brake pads apply the output force to the friction surfaces on both sides of
the brake rotors, which slows the rotation of the tire and wheel assemblies. The correct function
of the brake pad hardware and of the brake caliper inboard and outboard pistons is essential for
even distribution of braking force.

SPECIAL TOOLS AND EQUIPMENT

SPECIAL TOOLS

Special Tools

Illustration

Tool Number/Description

2007 Hummer H3

2007 BRAKES Disc Brakes - H3

J-39544-KIT

Complete Torque Socket Set-10 Pieces

J-41013

Rotor Resurfacing Kit

J-42450-A

Wheel Hub Resurfacing Kit

2007 Hummer H3

2007 BRAKES Disc Brakes - H3

J-45101

Hub and Wheel Runout Gage

J-45101-100

Conical Brake Rotor Washers

2007 Hummer H3

2007 BRAKES Disc Brakes - H3

2007 Hummer H3

2007 BRAKES Disc Brakes - H3