Brake Hose - Front

Replace the front brake hose on a 1992 Dodge Viper, including bleeding the brake system to restore safe braking function.

Warnings

Tools required

Parts

• Front brake hose × 1 — Use OEM specification - verify left/right side
• Copper crush washers for banjo bolt × 2 — Use OEM specification - 2 per banjo fitting
• Brake cleaner × 1 — Non-chlorinated type

Fluids

• DOT 3 brake fluid — 0.5 qt

Preparation

1. Park vehicle on level ground and apply parking brake firmly
2. Place wheel chocks behind rear wheels
3. Loosen front wheel lug nuts while vehicle is on ground (do not remove)
4. Lift front of vehicle with floor jack at designated jacking points
5. Support vehicle securely on jack stands rated for vehicle weight - never work under a vehicle supported only by a jack
6. Remove front wheel completely
7. Identify which side (left or right) requires hose replacement and work on that side only
8. Use turkey baster or fluid extractor to remove brake fluid from master cylinder reservoir to prevent overflow during hose disconnection - dispose of old fluid properly

Procedure

1. 1

   Locate and prepare brake hose connections
   Identify the brake hose running from the chassis-mounted steel brake line to the caliper. The hose attaches to the frame or suspension bracket with a mounting clip or bracket, and connects at both ends with threaded fittings. The caliper end typically uses a banjo bolt. Clean both connection points thoroughly with wire brush and apply penetrating oil if corrosion is present. Allow 5-10 minutes for penetrant to work on corroded fittings.
2. 2

   Disconnect brake hose from caliper
   Place drain pan beneath caliper to catch brake fluid. Using a combination wrench, hold the hose-end fitting steady while loosening the banjo bolt with another wrench. Remove the banjo bolt completely and separate the hose from the caliper. Brake fluid will drain - this is expected. Note the position and orientation of the copper crush washers on either side of the banjo fitting (these will be discarded). Immediately plug or cap the caliper port to minimize fluid loss and contamination.
   ⚠Brake fluid will drain freely once the banjo bolt is removed. Have drain pan positioned to catch all fluid.
   Torque spec

   Brake Hose Banjo Bolt31 Nm (23 lb-ft)
3. 3

   Disconnect brake hose from steel brake line
   Locate where the flexible brake hose connects to the chassis-mounted steel brake line. This connection uses a threaded tube fitting. Using a line wrench (flare nut wrench) on the hose-end fitting and a backup wrench on the steel line fitting, carefully loosen and separate the connection. Turn the hose-end fitting to unthread it from the steel line. Be careful not to twist or kink the steel brake line. Additional fluid will drain from this connection.
   ⚠Use a line wrench (flare nut wrench) to prevent rounding off the soft brass or steel fittings. A standard open-end wrench may strip the fitting.
   Torque spec

   Line Fittings20 Nm (15 lb-ft)
4. 4

   Remove brake hose from mounting bracket
   The brake hose is secured to a bracket on the frame or suspension component with either a clip, a bolt, or passes through a slotted bracket. If secured with a bolt, remove it completely. If retained by a spring clip, compress or pry the clip to release the hose. If the hose passes through a slotted bracket, rotate and maneuver the hose to extract it from the slot. Remove the brake hose completely from the vehicle and inspect the mounting hardware for damage or corrosion.
   Torque spec

   Brake Hose Bracket10 Nm (7 lb-ft)
5. 5

   Prepare new brake hose for installation
   Unpack the new brake hose and verify it matches the original in length, fitting types, and routing configuration. Verify left/right side if applicable. Install the hose into the frame or suspension mounting bracket first - secure with the mounting bolt or clip but do not fully tighten yet. Ensure the hose is positioned with the correct orientation - there should be no twists in the hose body. The routing must allow full steering travel without tension, contact with other components, or kinking.
6. 6

   Connect new brake hose to steel brake line
   Thread the hose-end fitting onto the chassis steel brake line by hand, turning the hose body (not the fitting on the steel line) to start the threads. Once hand-tight, use a line wrench on the hose fitting and a backup wrench on the steel line fitting to tighten to specification. Do not overtighten - brass fittings can strip easily. Verify the hose is not twisted during this process.
   ⚠Cross-threading will ruin the fitting and require steel line replacement. Thread fittings by hand first to ensure proper engagement before using wrenches.
   Torque spec

   Line Fittings20 Nm (15 lb-ft)
7. 7

   Connect new brake hose to caliper with new washers
   Install one NEW copper crush washer onto the banjo fitting on the end of the brake hose. Insert the banjo fitting into the caliper port, then install the second NEW copper crush washer onto the banjo bolt. Thread the banjo bolt through the banjo fitting and into the caliper by hand. Ensure the hose orientation allows the hose to route naturally to the frame bracket without twisting. Tighten the banjo bolt to specification using a torque wrench.
   ⚠️Never reuse old copper washers. Reused washers will not seal properly and will cause brake fluid leakage and brake failure.
   Torque spec

   Brake Hose Banjo Bolt31 Nm (23 lb-ft)
8. 8

   Secure hose in mounting bracket and verify routing
   Now that both ends of the hose are connected, tighten the hose mounting bracket bolt or ensure the clip is fully seated. Verify the following: hose has no twists along its length, hose does not contact suspension components or steering linkage at any point, and hose has sufficient slack to allow full steering travel from lock to lock without tension. Turn the steering wheel fully left and right to verify clearance.
   ⚠A twisted or improperly routed hose will fail prematurely and can cause brake failure. Verify routing carefully before proceeding to bleeding.
   Torque spec

   Brake Hose Bracket10 Nm (7 lb-ft)
9. 9

   Refill master cylinder reservoir
   Open the master cylinder reservoir cap and fill with fresh brake fluid meeting the manufacturer's specification (verify DOT 3 vs. higher-spec fluid in service manual) from a sealed container to the MAX line. Keep the reservoir topped up throughout the bleeding process - never allow it to run dry or air will enter the system.
10. 10

    Bleed the brake system
    Starting with the wheel where the hose was replaced, attach clear tubing to the caliper bleeder screw and route into a catch bottle with some fresh brake fluid in the bottom. Have an assistant pump the brake pedal 3-4 times and hold pressure. Open the bleeder screw 1/4 to 1/2 turn while assistant maintains pedal pressure - fluid and air will flow through the tube. Close the bleeder before the pedal reaches the floor. Repeat this process until fluid flows with no air bubbles. Check and refill the master cylinder reservoir frequently. After bleeding the replaced hose side, bleed the remaining wheels following the manufacturer's recommended bleeding sequence for this vehicle as specified in the factory service manual. Tighten all bleeder screws to specification when complete.
    ⚠️If the brake pedal does not achieve firm pressure after bleeding, DO NOT drive the vehicle. Air remains in the system or there is a leak. Repeat bleeding or seek professional service.
    ⚠Never allow the master cylinder reservoir to run empty during bleeding. Introducing air at the master cylinder requires bleeding the entire system.
    Torque spec

    Bleeder Screw14 Nm (10 lb-ft)
11. 11

    Inspect for leaks
    With the brake system bled and reservoir filled to the proper level, have an assistant apply firm, steady pressure to the brake pedal while you inspect all connections: the banjo bolt at the caliper, the threaded fitting at the steel line, the bleeder screw, and the mounting bracket area. Look for any signs of fluid weeping or dripping. If any leak is found, release pedal pressure, correct the issue (retorque or replace parts as needed), and re-bleed the system.
12. 12

    Reinstall wheel and lower vehicle
    Clean the wheel mounting surface on the hub. Reinstall the wheel and thread lug nuts by hand. Lower the vehicle until the tire just contacts the ground (weight not fully on wheel). Tighten lug nuts in a star pattern to specification using a torque wrench. Fully lower the vehicle and remove jack stands and floor jack.
    Torque spec

    Wheel Lug Nuts136 Nm (100 lb-ft)

Reassembly

1. Reinstallation follows removal steps in reverse order
2. Always use new copper crush washers on banjo bolt connections
3. Verify brake hose routing allows full steering travel with no contact or binding
4. Torque all fasteners to specification - do not overtighten soft brass fittings
5. Maintain master cylinder reservoir level throughout bleeding process

Verification

• Start engine and pump brake pedal - pedal should achieve firm pressure within 3-4 pumps and hold steady pressure when depressed
• Pedal should not sink slowly to the floor when held under pressure - this indicates air in system or internal leak
• Turn steering wheel fully lock-to-lock and verify brake hose does not contact suspension, steering components, or tire at any point in the travel
• Perform a low-speed brake test in a safe area (empty parking lot) - brakes should engage smoothly and evenly without pulling to one side
• Re-inspect all connections for leaks after test drive - look for fluid wetness at banjo bolt, line fitting, and bleeder screw
• Check master cylinder reservoir level and top off if needed - significant fluid loss indicates a leak
• Verify brake pedal feel remains firm after sitting overnight - soft pedal after standing may indicate air in system

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