Replace front brake pads and rotors on a 2012-2018 Jeep Wrangler 3.6L V6, including caliper service and proper torque procedures.

Warnings

Tools required

Parts

• Front brake pad set (4 pads total) × 1 — Use OEM or equivalent high-quality ceramic pads
• Front brake rotors × 2 — Use OEM specification 330mm vented rotors
• Brake hardware kit (clips, springs) × 1 — Often included with pad set

Fluids

• Mopar DOT 4 Brake Fluid — 0.25 qt

Preparation

1. Park vehicle on level, solid ground. Place transmission in PARK (automatic) or gear (manual). Apply parking brake.
2. Loosen front wheel lug nuts approximately 1 turn while vehicle is on ground, but do not remove.
3. Lift front of vehicle using floor jack at frame rail or designated lift point. Secure with jack stands under frame rails. Never rely solely on jack.
4. Remove front wheels completely and set aside.
5. Remove approximately 1/3 of brake fluid from master cylinder reservoir using turkey baster or syringe. Dispose of old fluid properly. This prevents overflow when compressing pistons.
6. Inspect brake system for leaks, damaged brake lines, or worn suspension components before proceeding.

Procedure

1. 1

   Remove caliper slide bolts
   Locate the two 18mm caliper slide bolts on the rear of the caliper assembly. These bolts secure the caliper to the bracket and allow the caliper to slide. Using an 18mm wrench or socket, remove both slide bolts completely. Support the caliper by hand as you remove the second bolt to prevent it from falling and damaging the brake hose.
   Torque spec

   Caliper Slide Bolts39 Nm (29 lb-ft)
2. 2

   Hang caliper safely
   Carefully pivot the caliper up and off the rotor and pads. Do NOT let the caliper hang by the rubber brake hose, as this can damage the hose internally. Use a wire hook, bungee cord, or zip tie to secure the caliper to the suspension or frame above. Ensure there is no tension or stress on the brake hose.
3. 3

   Remove old brake pads and hardware
   Remove the old brake pads from the caliper bracket. Note the position of any anti-rattle clips, shims, or springs for reinstallation. Remove all brake hardware clips from the caliper bracket. Inspect the condition of all hardware; if corroded or damaged, replace with new hardware kit.
4. 4

   Remove caliper bracket
   Using a 21mm socket, remove the two large caliper bracket bolts that secure the bracket to the steering knuckle. These bolts are very tight (117 Nm factory torque). Once removed, lift the caliper bracket off the rotor. Inspect bracket for cracks or damage.
   Torque spec

   Bracket Bolts117 Nm (86 lb-ft)
5. 5

   Remove and inspect old rotor
   Pull the old rotor straight off the wheel hub. If rotor is stuck due to corrosion, use a rubber mallet to tap the rotor from behind or use the threaded holes (if present) to press it off with bolts. Inspect the hub surface for rust, debris, or damage. Never install new rotors on corroded hubs.
6. 6

   Clean hub and prepare new rotor
   Use a wire brush to thoroughly clean the wheel hub mounting surface, removing all rust and corrosion down to bare metal. Clean the center hub bore as well. Remove protective oil coating from new rotors using brake cleaner and lint-free cloth. Verify new rotors match the old ones (330mm diameter for this vehicle). Check rotor thickness against minimum specification stamped on rotor.
7. 7

   Install new rotor
   Slide the new rotor onto the hub, aligning the holes. If rotor has directional cooling vanes (curved internal vanes), verify correct orientation per manufacturer marking. Use a lug nut to temporarily hold rotor in place while working. Spray rotor surface with brake cleaner to remove any residual oil or fingerprints.
8. 8

   Reinstall caliper bracket
   Position the caliper bracket over the rotor and align with the mounting holes on the steering knuckle. Apply medium-strength thread locker to the caliper bracket bolt threads as specified. Install both bracket bolts and tighten in a cross pattern to the specified torque of 117 Nm (86 lb-ft). This is a CRITICAL torque specification.
   ⚠️Thread locker is REQUIRED on caliper bracket bolts. Failure to use thread locker can result in bolts loosening during vehicle operation, causing complete brake failure.
   Torque spec

   Bracket Bolts117 Nm (86 lb-ft)
9. 9

   Clean and lubricate caliper slide pins
   Remove the rubber boots from the caliper slide pin bores on the caliper. Pull out the slide pins and inspect for corrosion, pitting, or wear. Clean pins thoroughly with brake cleaner. Apply a thin coat of high-temperature silicone brake lubricant to the slide pins. Do NOT use petroleum-based grease. Reinstall pins and boots, ensuring boots are properly seated.
10. 10

    Install new brake hardware and pads
    Install new anti-rattle clips and hardware onto the caliper bracket according to the configuration of the old hardware. Apply a thin film of brake lubricant to the pad backing plate edges where they contact the bracket (not on friction material). Install the inner and outer brake pads into the bracket, ensuring they are properly seated in the hardware clips.
11. 11

    Compress caliper piston
    Before reinstalling the caliper over the new, thicker pads, the caliper piston must be compressed. Use a C-clamp or brake caliper piston tool positioned against the piston and the back of the caliper body. Slowly compress the piston fully into the caliper bore. Watch the master cylinder reservoir to ensure fluid does not overflow. If piston is difficult to compress or will not compress, the caliper may be seized and require replacement.
12. 12

    Reinstall caliper and torque slide bolts
    Remove the caliper from where it was hanging. Carefully position the caliper over the new pads and rotor, aligning the slide bolt holes with the lubricated pins. Apply silicone brake lubricant to the slide bolt threads. Install both caliper slide bolts and torque to 39 Nm (29 lb-ft) in a cross pattern. Verify caliper moves freely on the slide pins after torquing.
    ⚠Ensure brake hose is not twisted or kinked during caliper installation. A twisted hose can restrict fluid flow or fail prematurely.
    Torque spec

    Caliper Slide Bolts39 Nm (29 lb-ft)
13. 13

    Repeat for opposite side
    Perform steps 1-12 on the opposite front wheel to replace the second rotor and pad set. Always replace brake components in axle sets (both front wheels) to maintain even braking performance.
14. 14

    Reinstall wheels and torque lug nuts
    Remove the temporary lug nut from the rotor. Reinstall the wheel onto the hub, aligning the holes. Install all lug nuts by hand until snug. Lower the vehicle until the tire just touches the ground but most weight is still on jack stands. Torque lug nuts to 156 Nm (115 lb-ft) in a star pattern. Fully lower vehicle and remove jack stands. Re-torque lug nuts to specification in star pattern with vehicle on ground.
    Torque spec

    Wheel Lug Nuts156 Nm (115 lb-ft)

Reassembly

1. Check master cylinder brake fluid level and top off with fresh Mopar DOT 4 brake fluid from a sealed container to the MAX line.
2. Do NOT mix different types or brands of brake fluid.
3. Pump brake pedal slowly several times until pedal feels firm. Pedal should not sink to floor. If pedal remains soft, system may require bleeding.

Verification

• With vehicle still lifted or safely supported, spin each front wheel by hand. Rotors should spin freely with only slight drag from new pads. No grinding, rubbing, or binding should occur.
• Verify all caliper bolts, bracket bolts, and lug nuts are torqued to specification using torque wrench.
• Inspect around caliper and brake lines for any fluid leaks.
• Start engine and pump brake pedal several times. Pedal should feel firm and hold position. If pedal sinks, do NOT drive vehicle - system requires bleeding or has a leak.
• Perform test drive in safe area at low speed (under 25 mph). Apply brakes gently several times to seat pads. Braking should be smooth and even with no pull to either side.
• After initial break-in stops, perform several moderate stops from 40 mph to properly bed pads to rotors. Avoid hard braking for first 200 miles.
• Re-check lug nut torque after 50 miles of driving.
• If brake pedal feels soft, pulls to one side, makes noise, or vehicle exhibits any abnormal braking behavior, stop driving immediately and seek professional service.

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