Replace the front brake hose connecting the rigid brake line to the brake caliper. This is a safety-critical brake system repair requiring proper bleeding and torque specifications.

Warnings

Tools required

Parts

• Front brake hose × 1 — Use OEM specification - verify left or right side
• Copper crush washers for banjo bolt × 2 — Two washers required per banjo fitting
• Brake hose retaining clip (if damaged) × 1 — Reuse OEM clip if intact

Fluids

• DOT 3 Brake Fluid — 0.5 qt

Preparation

1. Park vehicle on level surface and engage parking brake
2. Loosen front wheel lug nuts while vehicle is on ground (do not remove)
3. Raise front of vehicle with floor jack and support securely on jack stands at manufacturer frame jacking points
4. Remove front wheel completely on side being serviced
5. Place drain pan under brake caliper area to catch brake fluid
6. Clean brake hose banjo bolt connection and bracket area with wire brush to prevent contamination
7. Have replacement brake hose and new copper washers ready before disconnecting old hose

Procedure

1. 1

   Remove brake hose from caliper
   Using a 14mm wrench, hold the banjo bolt on the brake caliper and loosen it. Brake fluid will drain from the connection. Once loose, completely remove the banjo bolt and separate the brake hose from the caliper. Immediately plug or cap the caliper port to minimize fluid loss and contamination. Note the position of the copper crush washers (one on each side of the banjo fitting) - these MUST be replaced with new washers during installation.
   ⚠Brake fluid will spill during this step. Keep drain pan positioned and have shop towels ready.
   Torque spec

   Brake Hose Banjo Bolt25 Nm (18 lb-ft)
2. 2

   Remove brake hose from frame bracket
   Locate the brake hose bracket that secures the flexible hose to the vehicle frame or strut assembly. This bracket typically uses a 10mm bolt or has a spring clip retainer. If using a bolt, remove it with a 10mm socket. If using a clip, carefully pry or compress the retaining tabs and slide the hose out of the bracket. Note the orientation of the hose for proper installation of the replacement.
   Torque spec

   Brake Hose Bracket10 Nm (7 lb-ft)
3. 3

   Disconnect brake hose from hard line
   Using a 12mm flare nut wrench (not a regular open-end wrench, which can round the fitting), carefully loosen the threaded connection where the flexible brake hose connects to the rigid brake line. Hold the hose-end fitting with a 14mm wrench to prevent twisting the hose while turning the flare nut. Once loose, unthread completely and allow remaining brake fluid to drain into pan. Cap or plug the rigid brake line to prevent contamination.
   ⚠Use only a flare nut wrench on brake line fittings. Regular wrenches can round the soft steel fitting and cause expensive brake line damage.
4. 4

   Remove old brake hose
   With all connections disconnected, remove the old brake hose from the vehicle. Inspect the hose for the failure mode - look for cracks, bulging, chafing, or internal deterioration. This helps confirm the hose needed replacement and can identify any installation issues to avoid with the new hose.
   ℹ️Dispose of old brake hose and contaminated brake fluid according to local regulations.
5. 5

   Prepare new brake hose
   Remove new brake hose from packaging and verify it matches the old hose in length, fitting types, and bend configuration. Ensure you have two new copper crush washers for the banjo bolt connection. Do not remove protective caps from fittings until immediately before installation to prevent contamination.
   ⚠Installing the wrong brake hose can cause interference with suspension components or wheel, potentially causing brake failure.
6. 6

   Connect new hose to rigid brake line
   Remove the protective cap from the rigid brake line end of the new hose. Thread the hose fitting onto the rigid brake line by hand, ensuring it starts straight and threads smoothly. Once hand-tight, use the 12mm flare nut wrench to tighten the connection while holding the hose-end fitting with a 14mm wrench. Tighten securely but do not over-torque the flare nut fitting - it should be snug with moderate hand pressure on the wrench.
   ⚠Cross-threading the flare nut will damage the brake line and require costly replacement. Thread by hand first to ensure proper alignment.
7. 7

   Install hose in frame bracket
   Route the brake hose through the frame bracket in the same orientation as the original hose. Ensure the hose is not twisted and will not contact suspension components through full steering and suspension travel. If using a bolt-type bracket, install the bolt and tighten to specification. If using a clip-type bracket, press the hose into the bracket until the retaining clip clicks into place.
   ⚠A twisted brake hose will cause premature failure. Verify the hose routing matches the original installation.
   Torque spec

   Brake Hose Bracket10 Nm (7 lb-ft)
8. 8

   Connect hose to caliper with new washers
   Remove the protective cap from the banjo fitting end of the new hose and from the caliper port. Place one NEW copper crush washer on the banjo bolt, then insert the bolt through the banjo fitting on the brake hose. Place the second NEW copper crush washer on the opposite side of the banjo fitting. Thread the banjo bolt into the caliper by hand to start. Using a 14mm wrench, torque the banjo bolt to specification (25 Nm / 18 lb-ft). Ensure the hose orientation allows unrestricted movement and does not contact the wheel or suspension.
   ⚠️Never reuse old copper washers. Reused washers will not seal properly and will cause brake fluid leakage and potential brake failure.
   Torque spec

   Brake Hose Banjo Bolt25 Nm (18 lb-ft)
9. 9

   Verify routing and clearances
   Before bleeding the brakes, turn the steering wheel fully lock-to-lock and visually verify the brake hose does not contact the wheel, tire, suspension components, or frame at any point. Push down on the vehicle to compress the suspension and verify clearance throughout the suspension travel. The hose should have slight slack but not be excessively loose.
   ⚠️Brake hose contact with rotating or moving components will cause hose failure and complete brake loss.
10. 10

    Bleed the brake system
    Fill the brake fluid reservoir with fresh DOT 3 brake fluid to the MAX line. Starting with the wheel farthest from the master cylinder (typically right rear), then left rear, then right front, then left front (the side just serviced), bleed each wheel. For the serviced wheel: attach clear hose to bleeder screw and place other end in container with some brake fluid. Have an assistant pump the brake pedal 3-4 times and hold pressure. Open the bleeder screw with an 8mm wrench - fluid and air will exit. Close bleeder before pedal reaches floor. Repeat until no air bubbles appear in the discharge fluid. Tighten bleeder screw to specification. Check reservoir level frequently and refill as needed - never let it run dry.
    ⚠️If the brake fluid reservoir runs dry during bleeding, air will enter the master cylinder and ABS system, requiring more extensive bleeding or professional service.
    ⚠Do not allow the brake pedal to return to full up position while bleeder screw is open, as this can draw air into the system.
    Torque spec

    Bleeder Screw13 Nm (10 lb-ft)
11. 11

    Reinstall wheel
    Clean the wheel hub surface and wheel mounting surface. Install the wheel onto the hub and hand-thread all lug nuts to prevent cross-threading. Tighten lug nuts in a star pattern with a torque wrench to specification (129 Nm / 95 lb-ft). Lower vehicle from jack stands and perform final torque verification with vehicle weight on the ground.
    Torque spec

    Wheel Lug Nuts129 Nm (95 lb-ft)

Reassembly

1. Ensure brake fluid reservoir is filled to MAX line with fresh DOT 3 brake fluid
2. Verify all brake line connections are tight and properly torqued
3. Wipe down all brake components and surrounding areas to remove spilled brake fluid
4. Double-check that brake hose has proper clearance and will not contact any components

Verification

• With engine off, pump brake pedal several times - pedal should become firm and maintain pressure when held. Spongy or sinking pedal indicates air in system requiring additional bleeding
• Visually inspect all brake connections for fluid leakage - check banjo bolt, flare nut connection, and bleeder screw
• Start engine and verify brake warning light is not illuminated on instrument cluster
• Test brakes at low speed (5-10 mph) in a safe area to verify proper braking function before normal driving
• After initial test drive, recheck all connections for leakage and verify brake fluid level has not dropped
• Turn steering wheel lock-to-lock while stationary and verify no contact between brake hose and wheel or suspension components
• Perform a final brake pedal test - pedal should be firm with no excessive travel and vehicle should brake straight without pulling to either side

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