🔧 ProMaster - Rear Brake Pads & Rotor Replacement

Changing the rear brake pads and rotors means removing the rear wheels, taking the caliper and bracket off, replacing the rotor, and installing new pads with proper lubrication and torque. This restores braking performance and helps prevent vibration, noise, and uneven stopping.

Difficulty Level: Intermediate | Estimated Time: 2-4 hours

Assumption: rear disc brakes with drum-in-hat parking brake (common on ProMaster).

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⚠️ Safety & Precautions

• ⚠️ Support the van with jack stands; never rely on a jack alone.
• ⚠️ Chock the front wheels and leave the transmission in gear; release the parking brake before rotor removal.
• ⚠️ Brake dust is harmful—use brake cleaner, not compressed air.
• ⚠️ Do not press the brake pedal with a caliper removed.
• ⚠️ If brake fluid rises near “MAX,” remove a little with a suction tool to prevent overflow.
• ⚠️ Battery disconnect is not required for this job.

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🔧 Required Tools

You'll need the following tools for this repair:

• Floor jack (rated 3-ton minimum)
• Jack stands (rated 3-ton minimum)
• Wheel chocks
• Lug nut socket (typically 19mm)
• 1/2" drive breaker bar
• 1/2" drive torque wrench (30-200 ft-lbs range)
• 3/8" drive ratchet
• 3/8" drive torque wrench (10-80 ft-lbs range)
• Socket set (10mm-21mm)
• Hex bit set (Allen) (typically 7mm-8mm)
• C-clamp (6 inch) or disc brake piston tool
• Brake caliper hanger hook
• Flat trim/pry tool
• Dead-blow hammer
• Wire brush
• Brake cleaner spray
• Micrometer or vernier caliper (specialty)
• Small suction gun or turkey baster
• Nitrile gloves
• Safety glasses

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🔩 Required Parts

HowToo sells all the parts you need for this repair:

• Rear brake pad set - Qty: 1
• Rear brake rotors - Qty: 2
• Rear pad hardware/clip kit - Qty: 1
• Brake caliper slide pin boots (if damaged) - Qty: 1
• Brake caliper bracket bolts (if one-time-use for your kit) - Qty: 1
• Brake lubricant (silicone brake grease) - Qty: 1
• Brake parts cleaner - Qty: 2 cans
• DOT 4 brake fluid - Qty: 1 quart
• Anti-seize compound - Qty: 1

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📋 Before You Begin

• Park on level ground. Put the transmission in 1st gear (or reverse) and shut the engine off.
• Chock both front wheels securely.
• Release the parking brake fully (rear rotors may not come off if it’s applied).
• Open the brake fluid reservoir cap (under the hood) and place a rag around it to catch any splash.
• “Caliper hanger hook” = a strong hook to support caliper.

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🔨 Step-by-Step Instructions

Follow these steps in order:

Step 1: Loosen lug nuts and raise the rear

• Use a lug nut socket (typically 19mm) and breaker bar to loosen the rear lug nuts 1 turn (do not remove yet).
• Lift one rear side with the floor jack (rated 3-ton minimum) at a solid jacking point.
• Set the van onto jack stands (rated 3-ton minimum), then repeat for the other rear side if you want both wheels off.
• Remove the lug nuts and wheels using the lug nut socket (typically 19mm).

Step 2: Inspect and prep the brake fluid level

• Check the brake fluid reservoir. If it’s near the top, use a small suction gun or turkey baster to remove a small amount.
• Compressing pistons pushes fluid back to the reservoir.

Step 3: Remove the rear caliper (do not let it hang)

• Turn the steering wheel is not needed (rear axle), just position yourself for access.
• Remove the caliper slide pin bolts using a hex bit set (Allen) (typically 7mm-8mm) and 3/8" drive ratchet.
• Carefully lift the caliper off the bracket. If it’s stuck, use a flat trim/pry tool gently to pop it free.
• Hang the caliper from the suspension using a brake caliper hanger hook.

Step 4: Remove the old pads and hardware

• Pull the inner and outer pads out of the bracket by hand.
• Remove the pad abutment clips/hardware using a flat trim/pry tool.
• Clean the bracket pad lands (where the clips sit) using a wire brush and brake cleaner spray.

Step 5: Remove the caliper bracket

• Remove the caliper bracket bolts using the correct socket set (10mm-21mm) and a 1/2" drive breaker bar.
• Set the bracket aside for cleaning and re-lubing the slide pins.
• Torque to 169 Nm (125 ft-lbs) when reinstalling bracket bolts.

Step 6: Remove the rotor

• If equipped with a rotor retaining screw, remove it using the correct bit from your socket set (10mm-21mm) (or the appropriate driver if present in your kit).
• Pull the rotor straight off. If it’s stuck, spray hub area with brake cleaner spray and tap the rotor hat with a dead-blow hammer to break rust loose.
• If the rotor won’t come off, the parking brake shoes may be holding it (drum-in-hat style). Make sure the parking brake is released, then tap and wiggle again.

Step 7: Quick parking brake shoe check (if drum-in-hat)

• Look inside the “hat” area of the rotor you removed. You’ll see small parking brake shoes on the backing plate if equipped.
• If you see heavy lining separation or missing friction material, stop and replace parking brake shoes/hardware before continuing.

Step 8: Clean hub face and install the new rotor

• Clean the hub face with a wire brush until smooth and flat.
• Apply a very thin film of anti-seize compound to the hub face (avoid wheel studs and braking surfaces).
• Clean the new rotor braking surfaces with brake cleaner spray (removes protective oil).
• Install the new rotor onto the hub. If there was a retaining screw, reinstall it using your socket set (10mm-21mm).

Step 9: Service slide pins and reinstall the bracket

• Remove slide pins from the bracket by hand. Wipe them clean and inspect the rubber boots.
• Apply a thin coat of brake lubricant (silicone brake grease) to the slide pins and reinstall them.
• Reinstall the caliper bracket using the socket set (10mm-21mm) and 1/2" drive torque wrench (30-200 ft-lbs range).
• Torque to 169 Nm (125 ft-lbs).

Step 10: Install new pad hardware and pads

• Install new abutment clips from the rear pad hardware/clip kit into the bracket.
• Apply a light film of brake lubricant (silicone brake grease) where pads slide on the clips (do not get grease on rotor/pad friction).
• Install the new inner and outer pads into the bracket.
• Pads should slide easily—no forcing.

Step 11: Compress the caliper piston and reinstall the caliper

• Use a C-clamp (6 inch) or disc brake piston tool to slowly push the piston fully back into the caliper.
• Brake piston tool = pushes piston straight without damage.
• Reinstall the caliper over the new pads.
• Install and tighten slide pin bolts using the hex bit set (Allen) (typically 7mm-8mm) and 3/8" drive torque wrench (10-80 ft-lbs range).
• Torque to 35 Nm (26 ft-lbs).

Step 12: Repeat on the other rear wheel

• Repeat Steps 3 through 11 on the other side.
• Do one side at a time to avoid confusion.

Step 13: Reinstall wheels and torque lug nuts

• Reinstall wheels and hand-thread lug nuts.
• Lower the van off the jack stands (rated 3-ton minimum) using the floor jack (rated 3-ton minimum).
• Torque lug nuts in a star pattern using the 1/2" drive torque wrench (30-200 ft-lbs range).
• Torque to 176 Nm (130 ft-lbs).

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✅ After Repair

• With the engine off, pump the brake pedal slowly 10-15 times until it feels firm (this seats the pads against the rotors).
• Check brake fluid level and top off with DOT 4 brake fluid if needed.
• Apply and release the parking brake a few times to confirm normal feel.
• Road test at low speed first. Confirm no pulling, grinding, or warning lights.
• Brake pad bed-in: make 6-10 medium stops from 35 mph to 5 mph, allowing cool-down between stops.

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💰 DIY vs Shop Cost

Shop Cost: $600-$1,100 (parts + labor)

DIY Cost: $220-$520 (parts only)

You Save: $380-$580 by doing it yourself!

Shop labor rates vary but typically run $100-$150/hour. This repair takes a shop approximately 2-3 hours.

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🎯 Ready to get started?

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