Front Brake Pad Replacement

This procedure covers removal and replacement of front brake pads on a 2007 Ram 3500 with 5.9L Cummins diesel engine, including caliper service and proper torque specifications.

Warnings

Tools required

Parts

• Front brake pad set (4 pads total, both sides) × 1 — Use OEM specification or quality aftermarket
• Brake hardware kit (anti-rattle clips and shims) × 1 — Often included with pad set

Fluids

• DOT 3 brake fluid — 0.25 qt

Preparation

1. Park vehicle on level, solid surface. Place transmission in Park (automatic) or gear (manual) and engage parking brake.
2. Chock rear wheels securely on both sides.
3. Loosen front wheel lug nuts 1/4 turn while vehicle is on ground (do not remove yet).
4. Lift front of vehicle using floor jack at designated frame lift points and support securely on jack stands under frame rails behind front axle.
5. Remove front wheels completely and set aside.
6. Open brake fluid reservoir cap and inspect fluid level. If reservoir is very full, remove approximately 2-3 oz with turkey baster to prevent overflow when compressing caliper pistons. Do not reuse removed fluid.

Procedure

1. 1

   Inspect brake system condition
   Before starting disassembly, inspect visible brake components. Check brake hose for cracks, bulging, or leaking. Examine rotor surface for excessive scoring, cracks, or deep grooves. Check caliper for fluid leaks around piston boot. If any of these conditions exist, additional service beyond pad replacement is required.
2. 2

   Remove caliper slide pin bolts
   Using the correct size wrench or socket (verify against factory service data for this application), remove the upper and lower caliper slide pin bolts. These bolts secure the caliper to the caliper bracket. Keep these bolts as they will be reused. The caliper should now be free to pivot or lift away from the bracket and rotor.
   ⚠Do not allow caliper to hang by brake hose. This can damage the hose internally and cause brake failure.
3. 3

   Support and secure caliper
   Carefully lift caliper assembly off the rotor and pads. Support the caliper using a wire hook, bungee cord, or by resting it on the upper control arm. Ensure no tension or weight is placed on the brake hose. The caliper should be supported at roughly the same height as when installed.
4. 4

   Remove brake pads and hardware
   Remove the inner and outer brake pads from the caliper bracket. Note the position of anti-rattle clips, shims, and any wear indicators for reinstallation. Remove and discard old anti-rattle clips and hardware from the caliper bracket. Inspect the caliper bracket ears and abutments for excessive wear or damage.
5. 5

   Clean caliper bracket and slides
   Using brake cleaner and a wire brush, thoroughly clean the caliper bracket abutment surfaces where pads contact the bracket. Clean the slide pin bores in the bracket. Inspect slide pins for damage, corrosion, or torn boots. Wipe slide pins clean and check that they move smoothly. Replace if damaged or seized.
6. 6

   Compress caliper piston
   Using a C-clamp or brake caliper piston compression tool, slowly compress the caliper piston(s) back into the caliper bore. Place the clamp against the back of the caliper body and against the inner brake pad backing plate (or piston face if pad is removed). Compress slowly and evenly. Monitor the brake fluid reservoir to ensure it does not overflow.
   ⚠Ensure bleeder screw is closed during compression. Open bleeder and catch fluid if piston is difficult to compress or fluid appears contaminated.
7. 7

   Install new brake hardware
   Install new anti-rattle clips onto the caliper bracket according to the hardware kit instructions. Ensure clips are fully seated and oriented correctly. Apply a thin layer of silicone brake grease to the pad abutment surfaces on the bracket where the pad backing plates will slide (do NOT get grease on rotor or friction material).
8. 8

   Install new brake pads
   Install the new inner and outer brake pads into the caliper bracket. Ensure pads are properly seated in the anti-rattle clips and that any wear indicators are positioned correctly (typically on inner pad, indicator tab should face toward rear of vehicle). Verify pads move slightly in the bracket and are not binding.
9. 9

   Lubricate and prepare slide pins
   Apply a thin coat of silicone brake grease to the smooth shaft portion of each caliper slide pin. Do NOT use petroleum-based grease as it will damage rubber boots. Ensure slide pin boots are in good condition and properly seated in both the pin and bracket.
10. 10

    Reinstall caliper
    Remove caliper from its supported position and carefully position it over the new brake pads and rotor. Align the caliper slide pin holes with the bracket. Insert both slide pin bolts by hand and thread them in several turns to ensure proper threading.
11. 11

    Torque caliper slide pin bolts
    Using a torque wrench, tighten both caliper slide pin bolts to the factory-specified torque (verify against 2007 Ram 3500 service manual — typically significantly higher than a light-duty caliper). Tighten in a cross pattern (upper then lower, or vice versa) to ensure even seating. Verify caliper is properly seated against the bracket.
    Torque spec

    Caliper Slide Pin Bolts35 Nm (26 lb-ft)
12. 12

    Repeat procedure for opposite side
    Perform steps 1 through 11 for the opposite front brake assembly. It is critical that both front brakes are serviced together to maintain balanced braking performance.
    ⚠️Never replace brake pads on only one side of an axle. This creates uneven braking forces that can cause vehicle instability and loss of control.
13. 13

    Install wheels and torque lug nuts
    Reinstall both front wheels. Thread all lug nuts by hand to prevent cross-threading. Using a torque wrench, tighten lug nuts in a star pattern to the specified torque of approximately 190 Nm (140 lb-ft) — verify exact value against 2007 Ram 3500 service manual. Make multiple passes, gradually increasing torque to final specification.
    Torque spec

    Wheel Lug Nuts183 Nm (135 lb-ft)
14. 14

    Lower vehicle and perform final checks
    Remove jack stands and carefully lower vehicle to the ground. With vehicle still supported by jack but weight on wheels, perform a final torque check on all lug nuts in star pattern to approximately 190 Nm (140 lb-ft) — verify exact value against 2007 Ram 3500 service manual. Remove jack completely.
    Torque spec

    Wheel Lug Nuts183 Nm (135 lb-ft)
15. 15

    Restore brake pedal and check fluid level
    With engine OFF, pump brake pedal slowly and firmly 10-15 times until pedal feels firm and normal height. Pedal should not go to the floor. Check brake fluid reservoir and top off to MAX line with fresh brake fluid of the type specified on the reservoir cap (verify DOT 3 vs DOT 4 for this vehicle). Reinstall reservoir cap securely.
    ⚠️If brake pedal feels spongy, goes to floor, or does not return to normal firmness, DO NOT drive vehicle. Air may be in the system requiring bleeding, or another issue exists.

Reassembly

1. Ensure all caliper slide pin bolts are torqued to 35 Nm (26 lb-ft) with silicone brake grease applied to pins.
2. Verify wheel lug nuts are torqued to 183 Nm (135 lb-ft) in star pattern on both front wheels.
3. Confirm brake fluid reservoir is filled to MAX line with DOT 3 brake fluid and cap is secure.
4. Verify no tools or parts are left in wheel wells or under vehicle.

Verification

• With engine off, pump brake pedal 10-15 times. Pedal should feel firm and hold steady pressure without sinking.
• Start engine and pump brake pedal. Pedal may drop slightly as vacuum brake booster activates, then should remain firm.
• Check around all brake components for any fluid leaks while assistant presses brake pedal.
• Perform initial brake test at walking speed in safe area with no other traffic. Verify brakes engage smoothly without pulling to one side.
• After test drive at low speeds, verify no unusual noises, vibrations, or pedal pulsation. Allow 100-200 miles for new pads to properly seat and bed-in.
• After first 50-100 miles, re-torque wheel lug nuts to 183 Nm (135 lb-ft) to ensure proper seating.
• If any brake warning lights illuminate, squealing continues after break-in period, or braking performance is abnormal, have system inspected by qualified technician immediately.

Related trouble codes on this vehicle

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