Front Brake Pad Replacement

Replace front brake pads on a 1992 Dodge Viper, including caliper slide pin service and proper break-in procedure for this high-performance sports car.

Warnings

Tools required

Parts

• Front brake pad set (4 pads total) × 1 — Use OEM specification or high-performance equivalent
• Brake hardware kit (anti-rattle clips, shims) × 1 — Use OEM specification

Fluids

• DOT 3 brake fluid — 0.25 qt

Preparation

1. Park vehicle on level, solid ground and engage parking brake firmly.
2. Loosen front wheel lug nuts 1/4 turn while vehicle is on the ground.
3. Lift front of vehicle using floor jack at designated front lift point and secure on jack stands under the frame rails.
4. Remove both front wheels completely and set aside.
5. Remove reservoir cap from brake fluid master cylinder (located in engine compartment) and extract approximately 2 ounces of fluid using a turkey baster to prevent overflow when compressing caliper pistons. Discard extracted fluid properly.
6. Inspect brake rotors for scoring, cracks, or excessive wear. Measure rotor thickness if possible and replace rotors if below minimum specification or if severely damaged.

Procedure

1. 1

   Remove caliper slide pin bolts
   Locate the two caliper slide pin bolts on the rear of the brake caliper. These are the smaller bolts that secure the caliper to the caliper bracket. Using the appropriate socket, remove both slide pin bolts completely. The caliper should now be free to pivot upward. Note the condition of the slide pin boots for any tears or damage.
   Torque spec

   Caliper Slide Pin Bolts35 Nm (26 lb-ft)
2. 2

   Support and remove caliper
   Carefully pivot the caliper upward and away from the rotor. Do not allow the caliper to hang by the brake hose, as this can damage the hose internally. Use a brake caliper hanger, sturdy wire, or bungee cord to suspend the caliper from the suspension component or frame, ensuring no tension is placed on the flexible brake hose.
   ⚠Never let the caliper hang by the brake hose. Internal hose damage may not be visible but can cause brake failure.
3. 3

   Remove old brake pads and hardware
   Remove the two brake pads from the caliper bracket. Note their orientation for reference. Remove the anti-rattle clips and any shims from the caliper bracket. Inspect the caliper bracket mounting area and abutment surfaces for corrosion or damage. Dispose of old pads properly according to local regulations.
4. 4

   Inspect and clean caliper bracket
   Use a wire brush to clean the pad abutment surfaces on the caliper bracket where the brake pad ears rest. Remove all rust, debris, and old lubricant. Spray brake parts cleaner on all cleaned surfaces and wipe dry. Inspect the caliper bracket bolts (the large bolts securing the bracket to the spindle) for any looseness or damage, but do not remove them unless replacement is necessary.
5. 5

   Service caliper slide pins
   Remove the slide pins from the caliper bracket by pulling them out of their bores. Inspect the slide pin boots for tears or deterioration and replace if damaged. Wipe the slide pins clean and inspect for corrosion or scoring. Clean the slide pin bores in the bracket. Apply a thin, even coat of silicone brake grease to the entire length of each slide pin and reinstall them into the bracket, ensuring the boots are properly seated.
6. 6

   Compress caliper pistons
   Lower the caliper assembly to access the pistons. Using a C-clamp or brake caliper piston compression tool, slowly compress both pistons (Viper front calipers have dual pistons per caliper) fully into the caliper bore. Position the clamp against an old brake pad or wooden block to distribute pressure evenly across both piston faces. Monitor the brake fluid reservoir to ensure it does not overflow as fluid is displaced back into the reservoir.
   ⚠Compress pistons slowly to prevent brake fluid from overflowing the master cylinder reservoir. Have a helper monitor fluid level or check frequently.
7. 7

   Install new brake hardware
   Install the new anti-rattle clips from the brake hardware kit onto the caliper bracket, ensuring they snap firmly into place. Install any shims or backing plates that came with the new pad set according to the pad manufacturer's instructions. Verify that all hardware is fully seated and secure.
8. 8

   Install new brake pads
   Apply a thin layer of silicone brake grease to the back of each brake pad where it contacts the caliper piston (not on the friction surface). Install the new brake pads into the caliper bracket, ensuring they are properly seated in the anti-rattle clips with the friction material facing the rotor. Verify that the pads move freely in the bracket without binding.
9. 9

   Reinstall caliper
   Remove the caliper from its supported position and carefully lower it over the new brake pads and rotor. Align the caliper slide pin bolt holes with the slide pins. Clean the threads of the slide pin bolts and apply a small amount of silicone brake grease to the threads. Install both slide pin bolts and hand-tighten, then torque to specification using a torque wrench in a cross pattern.
   Torque spec

   Caliper Slide Pin Bolts35 Nm (26 lb-ft)
10. 10

    Repeat for opposite side
    Repeat steps 1 through 9 for the opposite front brake assembly. It is critical to replace brake pads on both front wheels simultaneously to maintain balanced braking performance.
11. 11

    Restore brake pedal and check fluid
    Before reinstalling wheels, pump the brake pedal slowly several times until it becomes firm. This repositions the caliper pistons against the new pads. The pedal should feel solid after 3-5 pumps. Check the brake fluid level in the master cylinder reservoir and top off with fresh brake fluid of the OEM-specified type (verify DOT 3 vs DOT 4 in the owner's manual/FSM) to the MAX line. Reinstall the reservoir cap securely.
    ⚠️Do not attempt to drive the vehicle until the brake pedal is firm. Failure to pump up the brakes will result in no braking capability on the first pedal application.
12. 12

    Reinstall wheels and lower vehicle
    Reinstall both front wheels, ensuring they are properly seated on the hubs. Thread all lug nuts by hand first to prevent cross-threading. Tighten lug nuts in a star pattern to approximately 50 lb-ft by hand. Lower the vehicle to the ground and remove jack stands. With the vehicle on the ground, torque the lug nuts to the OEM specification (verify exact value in the FSM) in a star pattern using a torque wrench.
    Torque spec

    Wheel Lug Nuts140 Nm (103 lb-ft)

Reassembly

1. Reinstallation follows removal in reverse order as detailed in the steps above.
2. Always torque all fasteners to the specifications provided using a calibrated torque wrench.
3. Ensure all slide pin bolts are properly torqued and that slide pins move freely after installation.

Verification

• With the vehicle still on jack stands or with wheels off the ground, verify that both front wheels rotate freely without dragging or rubbing sounds from the brake pads.
• Pump the brake pedal 5-10 times and verify it becomes firm and maintains pressure. The pedal should not sink slowly to the floor.
• Start the engine and apply firm brake pressure. Check all caliper areas and brake lines for any signs of fluid leakage.
• Perform a low-speed brake test in a safe area (5-10 mph) to verify basic brake function before proceeding to normal driving.
• Follow proper break-in procedure: Perform 8-10 gradual stops from 30-40 mph with moderate pedal pressure, allowing 30 seconds of light driving between stops to cool. Avoid aggressive braking or extended high-speed driving for the first 200 miles.
• After the first 50-100 miles, re-check wheel lug nut torque and verify no brake fluid leaks are present.
• Listen for any abnormal brake noise (squealing, grinding, or rattling) during the break-in period. Some light squeaking may be normal initially but should diminish.

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