Brake Hose - Front

Replace the front brake hose on a 2023 Rivian EDV 500, including brake fluid bleeding and system verification.

Warnings

Tools required

Parts

• Front brake hose assembly × 1 — Use OEM Rivian specification
• Brake hose sealing washers (copper) × 4 — Typically 2 per hose fitting
• Brake hose retaining clip × 1 — Use OEM specification if damaged

Fluids

• DOT 4 Brake Fluid — 1 qt

Preparation

1. Park vehicle on a level, solid surface and engage parking brake
2. Place wheel chocks behind rear wheels
3. Verify vehicle is in Park mode and powered off completely
4. Open brake fluid reservoir cap briefly to release any vacuum, then close loosely to allow fluid displacement during hose removal
5. Loosen front wheel lug nuts while vehicle is on ground
6. Lift front of vehicle using floor jack at designated lift points per owner's manual
7. Secure vehicle on jack stands rated for minimum 8000 lbs at proper front jacking points
8. Remove front wheel on side being serviced
9. Clean brake hose fittings, caliper mounting area, and chassis bracket with wire brush and penetrating oil if corroded
10. Have brake fluid catch pan and towels ready

Procedure

1. 1

   Remove wheel and access brake hose
   With the wheel removed, visually inspect the brake hose routing from the chassis hard line to the brake caliper. Identify the upper connection point at the chassis bracket (typically a banjo bolt or threaded fitting) and the lower connection at the caliper. Note the position of any hose retaining clips or brackets.
2. 2

   Drain brake fluid from hose
   Place a drain pan under the caliper. Using a flare nut wrench to prevent rounding, carefully loosen the brake line fitting at the caliper end first. This is typically a banjo bolt or threaded fitting. Allow brake fluid to drain into the pan. Be prepared for fluid spillage and protect surrounding components with towels.
3. 3

   Disconnect brake hose from caliper
   Fully remove the brake line fitting from the caliper. If using a banjo bolt connection, note the position of the sealing washers on each side of the fitting. If using a threaded connection, remove completely and cap the caliper port with a rubber cap or plug to prevent fluid loss and contamination. Discard old sealing washers.
4. 4

   Remove hose from chassis bracket
   Locate the brake hose retaining clip or bracket at the chassis mounting point. This typically holds the hose in position to prevent movement. Remove any clips or fasteners securing the hose to the bracket. Use pliers or appropriate tool to release spring clips if present.
5. 5

   Disconnect brake hose from hard line
   Using a flare nut wrench on the upper fitting at the chassis hard line connection, carefully loosen and remove the brake hose. Hold the hard line stationary with a backup wrench to prevent twisting the brake line. Allow remaining fluid to drain. Cap the hard line immediately with a rubber cap to prevent contamination and further fluid loss.
6. 6

   Remove old brake hose
   Carefully remove the brake hose from the vehicle, noting its routing path and any mounting points. Inspect the old hose for signs of damage, cracking, bulging, or chafing to confirm replacement was necessary. Check that all mounting hardware is accounted for.
7. 7

   Prepare new brake hose
   Unpack the new brake hose and verify it matches the old hose in length, fitting types, and configuration. Install new copper sealing washers on banjo bolt fittings (one on each side of the fitting eye). Do not reuse old washers. Ensure the hose is free of debris and protective caps are removed from fittings.
8. 8

   Install new brake hose to chassis
   Remove the cap from the chassis hard line. Route the new brake hose along the original path. Thread the upper fitting onto the chassis hard line hand-tight first to ensure proper thread engagement. Use a flare nut wrench to tighten the fitting carefully. Without manufacturer specifications, tighten to approximately 11-13 ft-lbs or until snug plus 1/8 turn. Do not overtighten.
9. 9

   Secure hose to chassis bracket
   Install the brake hose into the chassis bracket or mounting point. Ensure the hose sits properly in the bracket without twisting. Install the retaining clip or fastener to secure the hose in position. Verify the hose has appropriate slack and will not be stretched or kinked during suspension travel or steering movement.
10. 10

    Connect brake hose to caliper
    Remove the cap from the caliper port. Position the brake hose fitting to the caliper with new sealing washers in place. Thread the banjo bolt or fitting hand-tight first. Using a torque wrench or carefully with a combination wrench, tighten the caliper fitting. Without manufacturer specifications, tighten to approximately 11-13 ft-lbs or until snug. Ensure the hose is not twisted and hangs naturally.
11. 11

    Verify hose routing and clearance
    Before adding fluid, verify the brake hose does not contact the wheel, suspension components, or steering components throughout full range of motion. Turn the steering wheel lock-to-lock while observing hose clearance. Compress and extend the suspension manually to verify adequate slack. Adjust routing if necessary.
12. 12

    Refill brake fluid reservoir
    Open the brake fluid reservoir cap in the engine bay. Check the current fluid level. Using only fresh DOT 4 brake fluid from a sealed container, fill the reservoir to the MAX line. Keep the reservoir at least half full throughout the bleeding process.
13. 13

    Bleed brake system - gravity method start
    Attach clear tubing to the bleeder valve on the caliper where the new hose was installed. Place the other end of the tubing in a clean catch bottle. Open the bleeder valve 1/2 to 3/4 turn. Allow brake fluid and air to gravity drain into the bottle. Monitor the reservoir level constantly and refill as needed. Continue until fluid flows clear without air bubbles.
14. 14

    Bleed brake system - pedal method
    With an assistant in the vehicle, have them pump the brake pedal slowly 3-5 times and hold pressure. While pressure is held, open the bleeder valve to release fluid and air, then close it before the pedal reaches the floor. Repeat this process until firm pedal feel returns and no air bubbles appear. Always close bleeder before releasing pedal. Check reservoir level frequently.
15. 15

    Complete bleeding and close system
    Once fluid runs clear with no air bubbles and pedal feel is firm, tighten the bleeder valve securely (typically 8-10 ft-lbs or snug). Remove the bleed tubing. Wipe all fittings clean and inspect for leaks. Top off the brake fluid reservoir to the MAX line. Securely install the reservoir cap.

Reassembly

1. Reinstall the wheel and hand-tighten lug nuts in a star pattern
2. Carefully lower the vehicle from jack stands using the floor jack
3. Once vehicle is on the ground, torque wheel lug nuts to manufacturer specification (typically 110-130 ft-lbs for this vehicle) in a star pattern
4. Clean any brake fluid residue from components with water and towels
5. Dispose of old brake fluid properly at a recycling center - never pour down drains

Verification

• Start vehicle and verify the brake system warning light is off on the dashboard
• With the vehicle still parked, pump the brake pedal several times - it should feel firm and consistent with minimal travel
• Perform a visual inspection under the vehicle of all brake hose connections for any signs of leaking
• Perform a low-speed brake test in a safe area - brakes should engage smoothly without pulling to one side
• Check brake pedal travel and firmness - if pedal feels soft or spongy, repeat bleeding procedure
• Verify brake fluid level in reservoir is at MAX line and cap is secure
• Perform a comprehensive brake test at various speeds in a safe location before returning to normal driving
• Re-check all connections and fluid level after first 50 miles of driving

More procedures for this vehicle