Brake Hose - Front

Replace the front brake hose on a 1994-2007 Dodge Ram 2500 4WD with 5.9L Cummins diesel engine, including bleeding the brake system to restore proper braking performance.

Warnings

Tools required

Parts

• Front brake hose × 1 — Use OEM specification
• Copper crush washers for banjo bolt × 2 — Use OEM specification
• Brake hose retaining clip (if damaged) × 1 — Use OEM specification

Fluids

• DOT 3 brake fluid — 1 qt

Preparation

1. Park vehicle on level, solid surface and place wheel chocks behind rear wheels
2. Loosen front wheel lug nuts while vehicle is on ground (do not remove)
3. Lift front of vehicle with floor jack at designated frame lift points
4. Support vehicle securely on jack stands rated for at least 3 tons - never work under a vehicle supported only by a jack
5. Remove front wheel completely
6. Clean brake hose connections, banjo bolt, and caliper area with brake cleaner and wire brush
7. Apply penetrating oil to brake line fittings and allow to soak 10-15 minutes if connections appear corroded
8. Locate brake fluid reservoir under hood and verify fluid level is at MAX line
9. Place drain pan under work area to catch brake fluid

Procedure

1. 1

   Remove brake hose from caliper
   Using a combination wrench, hold the brake hose fitting to prevent it from twisting. Using another wrench, remove the banjo bolt connecting the brake hose to the brake caliper. Be prepared for brake fluid to drain. Remove and discard both copper crush washers from the banjo bolt. Immediately plug the caliper port with a clean rubber cap or wrap with clean plastic to minimize fluid loss and prevent contamination.
2. 2

   Disconnect brake hose from frame bracket
   Locate the brake hose frame bracket mounted to the vehicle frame or suspension component. Remove the retaining clip or lock ring securing the brake hose to the bracket. Carefully pull the brake hose through the bracket, noting the orientation and routing for reinstallation.
3. 3

   Disconnect brake hose from hard line
   Using a line wrench on the brake hose fitting and a backup wrench on the hard brake line fitting, carefully loosen and disconnect the brake hose from the metal brake line at the frame. Use a line wrench to prevent rounding the fittings. Allow brake fluid to drain into the drain pan. Cap or plug the hard line immediately to prevent excessive fluid loss and contamination.
4. 4

   Remove old brake hose
   Remove the old brake hose completely from the vehicle. Inspect the hard line threads and fitting for damage, corrosion, or debris. Clean the hard line fitting threads with a wire brush if necessary. Verify the new brake hose matches the old hose in length, fitting configuration, and routing path.
5. 5

   Install new brake hose to hard line
   Route the new brake hose following the same path as the original. Thread the brake hose fitting onto the hard brake line by hand first to ensure proper thread engagement. Use a line wrench to tighten the fitting to specification while holding the hard line with a backup wrench to prevent twisting the brake line.
6. 6

   Secure brake hose in frame bracket
   Insert the brake hose through the frame bracket in the correct orientation, ensuring the hose is not twisted. The brake hose should sit naturally without tension or twisting. Install the retaining clip or lock ring to secure the hose in the bracket. Verify the hose can move slightly to accommodate suspension travel without binding.
7. 7

   Connect brake hose to caliper
   Remove the plug from the caliper port. Install one NEW copper crush washer on each side of the banjo fitting (one against the caliper, one under the bolt head). Position the banjo fitting to the caliper, ensuring proper alignment. Thread the banjo bolt by hand to verify correct thread engagement, then tighten to specification.
   ⚠️Using old copper washers or omitting washers will result in brake fluid leaks and brake failure. Always use NEW copper washers.
   Torque spec

   Brake Hose Banjo Bolt25 Nm (18 lb-ft)
8. 8

   Verify brake hose routing and clearance
   Verify the brake hose routing matches the original configuration with no twists, kinks, or sharp bends. Turn the steering wheel fully lock-to-lock and verify the brake hose does not contact any suspension components, the tire, or the frame throughout the full range of steering and suspension travel. Reposition if necessary.
9. 9

   Refill brake fluid reservoir
   Remove the brake fluid reservoir cap under the hood. Fill the reservoir to the MAX line with fresh brake fluid meeting the manufacturer's specification (DOT 3) from a sealed container. Keep the reservoir filled above the MIN line throughout the bleeding process to prevent introducing air into the system.
10. 10

    Bleed the affected brake caliper
    Locate the bleeder screw on the brake caliper. Clean the bleeder screw area thoroughly. Attach a clear tube to the bleeder screw and submerge the other end in a container with clean brake fluid. Have an assistant slowly depress the brake pedal to the floor. Open the bleeder screw 1/2 to 3/4 turn and allow fluid and air bubbles to escape into the tube. Close the bleeder screw before the assistant releases the pedal. Repeat this process until no air bubbles appear in the fluid stream and only clean fluid flows. Tighten the bleeder screw to specification.
    ⚠Monitor brake fluid reservoir level constantly during bleeding. Never let it drop below MIN line or air will enter the master cylinder.
    Torque spec

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

    Check for leaks and verify fluid level
    With the bleeder screw closed, have an assistant apply firm, steady pressure to the brake pedal. Inspect all connections including the banjo bolt at the caliper, the line fitting at the hard line, and the bleeder screw for any signs of brake fluid leakage. Wipe all connections dry and recheck. Top off the brake fluid reservoir to the MAX line and reinstall the cap.
12. 12

    Reinstall wheel and lower vehicle
    Clean the wheel hub and mounting surface. Reinstall the wheel, threading lug nuts by hand to avoid cross-threading. Snug the lug nuts in a star pattern but do not fully tighten. Lower the vehicle until the tire just contacts the ground. Torque the wheel lug nuts to specification in a star pattern. Complete lowering of the vehicle and remove jack stands.
    Torque spec

    Wheel Lug Nuts183 Nm (135 lb-ft)

Reassembly

1. Verify all brake line connections are tight and show no signs of leakage
2. Verify brake fluid reservoir is filled to MAX line with fresh DOT 3 brake fluid
3. Ensure wheel lug nuts are torqued to specification in star pattern
4. Pump brake pedal several times and verify firm, consistent pedal feel before moving vehicle

Verification

• Start engine and pump brake pedal multiple times - pedal should be firm and consistent, not spongy or sinking
• With engine running, apply firm brake pressure and inspect all brake hose connections for leaks
• Perform brake test in safe area at low speed (under 5 mph) to verify braking response
• Test brakes at progressively higher speeds in a safe area, verifying straight stops with no pulling
• Turn steering wheel lock-to-lock while stationary and verify no contact between brake hose and other components
• Recheck brake fluid level after test drive and top off if necessary
• If pedal feels spongy or vehicle pulls to one side, repeat bleeding procedure or seek professional diagnosis

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