Delco 3400

NOTE: GM replacement brake lining material is recommended for all vehicles to maintain the balance between front and rear brake performance. GM replacement brake parts have been carefully selected to provide the proper brake balance for the purposes of stopping distance and control over the full range of operating conditions. Installation of front or rear lining material with performance different from that of GM replacement parts recommended for this vehicle can change the intended brake balance of this vehicle.

Suspending The Caliper:

Remove or Disconnect
1. Caliper. Refer to Brake Caliper Service and Repair.
^ Suspend the caliper.

Removing The Outboard Shoe And Lining:

2. Outboard shoe and lining (5).
^ Use a screwdriver to disengage the buttons on the pad from the holes in the caliper housing.
3. Inboard shoe and lining (7).
4. Bolt boots (1).
5. Mounting bolts and sleeves (4).
6. Bushings (3).

NOTE: Inspect mounting bolts, key, spring and sleeves for corrosion. Do not attempt to polish away corrosion. Replace if any is found. Inspect bolt and boots for nicks, cuts, or corrosion. Replace if any are found.

NOTE: Clean the caliper assembly and install a new brake hardware kit any time it is removed from the rotor.

Install or Connect

CAUTION: Always use the correct fastener in the proper location. When you replace a fastener, use ONLY the exact part number for that application. General Motors will call out those fasteners that require a replacement after removal. General Motors will also call out the fasteners that require thread lockers or thread sealant. Unless otherwise specified, do not use supplemental coatings (paints, greases, or other corrosion inhibitors) on threaded fasteners or fastener joint interfaces. Generally, such coatings adversely affect the fastener torque and joint clamping force, and may damage the fastener. When you Install fasteners, use the correct tightening sequence and specifications. Following these instructions can help you avoid damage to parts and systems.

NOTE: Any new rotor must have the protective coating removed from the friction surfaces before being placed in service. Use Goodwrench Brake Parts Cleaner (GM PIN 12345754), or equivalent, and wipe the surface clean with clean cloths. Do not use gasoline, kerosene or other oil-based solvents which may leave an oily residue. This residue is damaging to brake linings and is flammable.

Mounting Bolt Lubrication (Delco 3400):

1. Lubricate bushings (3) and mounting bolt seals (4) with Delco Silicone Lube GM PIN 18010909 or equivalent.
2. New bushings (3) and bolt seals (4) (if used).
3. New bolt boots (1).
4. Inboard lining (7).

Installing The Inboard Lining:

^ Snap retainer spring (17) into piston (9).
^ The pad retainer spring (17) is already staked to the inboard shoe.
^ The pad must lay flat against the piston.

Installing The Outboard Lining:

5. Outboard lining (5) with wear indicator (6) at leading edge of pad during forward wheel rotation.
^ The back of the pad must lay flat against the caliper.
6. Caliper (12). Refer to Brake Caliper Service and Repair.

CAUTION: Before moving the vehicle, pump the brake pedal several times to make sure it is firm. Do not move the vehicle until a firm pedal is obtained. Check the fluid level in the master cylinder after pumping the brakes.