🔧 Front Brakes & Rotors - Replacement

Replacing the front brake pads and rotors on your 4Runner restores stopping power, reduces vibration/pulsation, and prevents pad wear from damaging the calipers. You’ll remove the front caliper and bracket, swap the rotor, install new pads, then torque everything correctly.

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

Assumption: Standard factory front calipers/rotors; torque specs listed are typical for this 4Runner setup.

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⚠️ Safety & Precautions

• ⚠️ Work on level ground and chock the rear wheels before lifting.
• ⚠️ Support the SUV with jack stands; never rely on a floor jack alone.
• ⚠️ Don’t let the brake caliper hang by the rubber hose; support it with a hanger.
• ⚠️ Brake dust and cleaner are harmful—wear a mask and safety glasses.
• ⚠️ Keep grease off pad/rotor friction surfaces; it will reduce braking.

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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
• 21mm socket
• 14mm socket
• 17mm socket
• 3/8" ratchet
• 1/2" breaker bar
• Torque wrench (20-200 ft-lbs range)
• Large C-clamp
• Flat blade screwdriver
• Needle-nose pliers
• Wire hook or bungee cord
• Rubber mallet
• Wire brush
• Brake cleaner spray
• Disposable gloves
• Safety glasses

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🔩 Required Parts

HowToo sells all the parts you need for this repair:

• Front brake pad set - Qty: 1
• Front brake rotors - Qty: 2
• Brake hardware kit (clips/shims) - Qty: 1
• Brake caliper slide pin grease (silicone) - Qty: 1
• High-temperature brake lubricant (for pad ears/contact points) - Qty: 1
• Brake fluid (DOT 3) - Qty: 1 quart

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📋 Before You Begin

• Park on level ground, turn the steering wheel straight, and set the parking brake.
• Place wheel chocks behind both rear tires.
• Open the hood and locate the brake fluid reservoir.
• Check the fluid level now; compressing pistons can raise the level and overflow.
• C-clamp = a screw clamp that presses the piston in.

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🔨 Step-by-Step Instructions

Follow these steps in order:

Step 1: Loosen lug nuts and raise the front

• Use a 21mm socket and breaker bar to crack loose the front lug nuts about 1/2 turn (do not remove yet).
• Use a floor jack (rated 3-ton minimum) to lift the front at the proper jacking point.
• Set the frame securely onto jack stands (rated 3-ton minimum).

Step 2: Remove the front wheels

• Use the 21mm socket to remove the lug nuts.
• Remove both front wheels and set them aside.

Step 3: Remove the caliper (do not stretch the hose)

• Turn the steering wheel to give yourself more room at the side you’re working on.
• Use a 14mm socket and 3/8" ratchet to remove the two caliper slide pin bolts.
• Carefully lift the caliper off the bracket.
• Hang the caliper using a wire hook or bungee cord so the hose is relaxed.

Step 4: Remove the pads and hardware

• Use a flat blade screwdriver to gently pry the pads out if they’re tight.
• Remove the pad clips/hardware from the bracket.
• Clean the bracket pad-contact areas with brake cleaner spray and a wire brush.
• Clean metal-to-metal contact prevents pad sticking.

Step 5: Remove the caliper bracket

• Use a 17mm socket and breaker bar to remove the two caliper bracket bolts (they are tight).
• Remove the bracket and set it aside.
• On reassembly: Torque to 167 Nm (123 ft-lbs).

Step 6: Remove the rotor

• If the rotor is stuck, spray a little brake cleaner spray at the hub/rotor hat area and let it soak briefly.
• Strike the rotor hat with a rubber mallet to break it free.
• Remove the rotor.

Step 7: Prep the hub and install the new rotor

• Use a wire brush to clean rust from the wheel hub face (where the rotor sits).
• Clean the new rotor faces with brake cleaner spray to remove protective oil.
• Install the new rotor onto the hub.
• Temporarily thread on 1-2 lug nuts by hand to hold the rotor flush (optional but helpful).

Step 8: Service the slide pins (critical for even braking)

• Pull the caliper slide pins out of the bracket by hand.
• Wipe them clean with a shop towel, then apply a thin coat of brake caliper slide pin grease (silicone).
• Reinsert the pins and confirm they move smoothly.
• Slide pins should glide, not stick.

Step 9: Reinstall the caliper bracket

• Position the bracket over the new rotor.
• Start both bolts by hand to avoid cross-threading.
• Use a 17mm socket and torque wrench: Torque to 167 Nm (123 ft-lbs).

Step 10: Install new hardware and pads

• Install the new pad clips/hardware into the bracket by hand (use needle-nose pliers if needed).
• Apply a very light film of high-temperature brake lubricant where the pad “ears” touch the clips.
• Install the inner and outer pads into the bracket.
• No lube on pad/rotor friction surfaces.

Step 11: Compress the caliper piston

• Place the old pad against the piston face.
• Use a large C-clamp to slowly push the piston back into the caliper until it’s fully seated.
• Watch the brake fluid reservoir while compressing; remove a little fluid if it nears the top.

Step 12: Reinstall the caliper

• Lower the caliper over the new pads and bracket.
• Install the slide pin bolts by hand first.
• Use a 14mm socket and torque wrench: Torque to 34 Nm (25 ft-lbs).

Step 13: Reinstall wheels and torque lug nuts

• Install the wheels and hand-thread all lug nuts.
• Lower the SUV off the jack stands (rated 3-ton minimum) using the floor jack (rated 3-ton minimum).
• Use a 21mm socket and torque wrench to tighten lug nuts in a star pattern: Torque to 113 Nm (83 ft-lbs).

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✅ After Repair

• Before driving, pump the brake pedal 10-15 times until it feels firm (this seats the pads against the rotors).
• Check the brake fluid level and top off with DOT 3 if needed.
• Do a slow test drive in a safe area; confirm the SUV stops straight with no pulling.
• Bed-in the pads: make 6-10 medium stops from 40 mph to 10 mph, letting brakes cool slightly between stops.
• Recheck lug nut torque after 25-50 miles: Torque to 113 Nm (83 ft-lbs).

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💰 DIY vs Shop Cost

Shop Cost: $450-$850 (parts + labor)

DIY Cost: $180-$450 (parts only)

You Save: $270-$400 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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