brakes

Brake Hose - Rear

for 2012 Ford F-150 3.5L V6 EcoBoost · 4WD

Editorial review:Chris Hackleman — Master Technician · 20+ years · Jeff Moore — Master Lexus & Toyota Mechanic · 20+ years

Difficulty

Moderate

Time

1.0 h

Tools

Steps

✓Expert-verified. Personally reviewed and approved by OLP's master technicians (Chris Hackleman & Jeff Moore — 20+ years each). Always follow the vehicle's factory service information and torque specs.

This procedure replaces a damaged or leaking rear brake hose on a 2011-2014 Ford F-150 3.5L EcoBoost 4WD, restoring safe braking function and requiring brake system bleeding.

Warnings

⚠️SAFETY-CRITICAL REPAIR: Brake system failure can result in loss of vehicle control, severe injury, or death. If you are uncertain about any step, have this work performed by a qualified technician.

⚠️Never reuse copper crush washers on banjo bolts. Always install new washers to prevent brake fluid leaks.

⚠️Test brakes at low speed in a safe area before returning vehicle to normal service. Verify firm pedal and proper stopping power.

⚠Brake fluid is corrosive to paint and harmful if ingested. Wear chemical-resistant gloves and eye protection. Clean spills immediately with water.

⚠Use only DOT 4 LV brake fluid. Do not mix different brake fluid types or contaminate with petroleum products.

⚠Brake fluid absorbs moisture and degrades over time. Use only fresh fluid from a sealed container.

ℹ️If brake hoses show cracking, swelling, or fluid seepage, replace immediately regardless of mileage.

Tools required

Floor jackEssential

Jack stands rated for vehicle weightEssential

Wheel chocksEssential

Torque wrench (10-160 Nm range)Essential

Flare nut wrench setEssential

Combination wrench set (metric)

Brake fluid catch containerEssential

Brake bleeder kit or clear vinyl tubingEssential

Turkey baster or fluid pump

Wire brush

Penetrating oil

Brake cleaner

Parts

Rear brake hose × 1 — Use OEM Ford or equivalent DOT-approved brake hose
Copper crush washers for banjo bolt × 2 — Included with OEM hose or purchase separately
Brake hose retaining clip (if damaged) × 1 — Inspect during removal

Fluids

Motorcraft DOT 4 LV Brake Fluid — 0.5 qt

Preparation

Park vehicle on level surface and engage parking brake
Chock front wheels securely
Loosen rear wheel lug nuts 1/2 turn while vehicle is on ground
Raise rear of vehicle with floor jack and support on jack stands at manufacturer-specified jacking points on frame rails
Remove rear wheel completely on side being serviced
Clean master cylinder reservoir cap area and check fluid level
Prepare brake fluid catch container and position under work area
Inspect brake hose routing and note position of clips and brackets for reinstallation

Procedure

1
Remove brake hose from caliper
Locate the banjo bolt connecting the brake hose to the rear caliper. Using a flare nut wrench, loosen and remove the banjo bolt. Be prepared for brake fluid spillage. Once removed, immediately plug or cap the caliper port to minimize fluid loss and prevent contamination. Remove and discard both copper crush washers from the banjo fitting.
⚠Do not twist or kink the brake hose during removal. Support the hose to prevent stress on connections.
2
Disconnect brake hose from chassis hard line
Follow the brake hose to where it connects to the steel brake line at the chassis or axle bracket. If equipped with a banjo fitting at this end, remove the banjo bolt and discard the copper washers. If equipped with a threaded fitting, use a flare nut wrench to carefully loosen the fitting nut. Hold the hose end stationary while turning the nut to prevent twisting the brake line. Allow fluid to drain into catch container.
⚠Use a flare nut wrench to prevent rounding off the brake line fittings. Do not use standard open-end wrenches on brake line nuts.
3
Remove hose mounting brackets and clips
Locate any intermediate mounting brackets or retaining clips securing the brake hose to the vehicle chassis, frame, or axle. Remove the bracket bolts or release spring clips as applicable. Note the exact position and orientation of all brackets for proper reinstallation. Inspect clips for damage and replace if broken or deformed.
ℹ️Some F-150 models use spring clips that require spreading with pliers or a screwdriver. Do not damage the clips during removal.
Torque spec
Brake Hose Bracket10 Nm (7 lb-ft)
4
Remove old brake hose
Once all connections and mounting points are released, carefully remove the old brake hose from the vehicle. Inspect the removed hose for signs of damage including cracks, bulging, chafing, or internal deterioration. Check the routing path for any sharp edges or contact points that may have caused premature wear.
5
Prepare new brake hose for installation
Unpack the new brake hose and verify it matches the original in length and fitting configuration. Install NEW copper crush washers on both sides of the banjo fitting(s). Do not reuse old washers. Clean all mating surfaces on the caliper and hard line connections with brake cleaner. Inspect threads on the caliper and hard line for damage.
⚠️Verify the replacement hose is DOT-approved and designed for this specific application. Using incorrect hoses can result in brake failure.
6
Route and install new brake hose
Route the new brake hose following the exact path of the original hose. Ensure the hose is not twisted, kinked, or in contact with suspension components, exhaust, or sharp edges. The hose must have adequate slack to accommodate full suspension travel without stretching. Install any intermediate mounting brackets or clips in their original positions, but do not fully tighten bracket bolts yet.
⚠Improper hose routing can cause the hose to contact moving parts during suspension travel, leading to abrasion and failure.
7
Connect brake hose to caliper
Position the banjo fitting with NEW copper crush washers on both sides against the caliper inlet port. Ensure washers are properly seated. Thread the banjo bolt by hand to verify proper thread engagement. Using a torque wrench, tighten the banjo bolt to specification. Verify the hose is not twisted and can move freely.
⚠️Cross-threading the banjo bolt can strip the caliper threads, requiring caliper replacement. Start threads carefully by hand.
Torque spec
Brake Hose Banjo Bolt25 Nm (18 lb-ft)
8
Connect brake hose to chassis hard line
Connect the opposite end of the brake hose to the chassis hard line. If using a banjo fitting, install NEW copper washers and torque the banjo bolt to specification. If using a threaded fitting, carefully thread the fitting nut by hand first, then tighten with a flare nut wrench. Do not over-tighten threaded fittings as they seal on the flare, not the threads.
⚠If the connection uses a threaded flare fitting, tighten until snug plus approximately 1/6 turn. Over-tightening can damage the flare seal.
Torque spec
Brake Hose Banjo Bolt25 Nm (18 lb-ft)
9
Secure hose mounting brackets
Verify the brake hose routing one final time, ensuring proper clearance throughout full suspension travel (bounce the suspension if needed). Torque all mounting bracket bolts to specification. Ensure retaining clips are fully engaged and secure the hose without pinching or crushing.
Torque spec
Brake Hose Bracket10 Nm (7 lb-ft)
10
Bleed rear brake caliper
Locate the bleeder screw on the rear caliper. Attach a clear vinyl tube to the bleeder screw and submerge the other end in a container partially filled with clean brake fluid. Have an assistant pump the brake pedal 3-5 times and hold firm pressure. Open the bleeder screw 1/2 to 3/4 turn while maintaining pedal pressure. Close the bleeder screw before the pedal reaches the floor. Repeat until fluid flows clear without air bubbles. Top off the master cylinder reservoir frequently during bleeding to prevent air entry.
⚠️Never allow the master cylinder reservoir to run dry during bleeding. This will introduce air into the ABS system, requiring specialized bleeding equipment.
⚠The brake pedal must not be released while the bleeder screw is open, or air will be drawn into the system.
Torque spec
Bleeder Screw16 Nm (12 lb-ft)
11
Reinstall wheel and lower vehicle
Clean the wheel hub surface and wheel mounting surface with a wire brush. Install the wheel and hand-thread all lug nuts. Lower the vehicle until the tire just contacts the ground. Torque the lug nuts to specification in a star pattern. Fully lower the vehicle and remove jack stands.
Torque spec
Wheel Lug Nuts156 Nm (115 lb-ft)
12
Final brake system check and test
With the vehicle on the ground, pump the brake pedal 15-20 times to build pressure. The pedal should become firm and hold steady pressure without sinking. Check all brake hose connections for leaks. Top off the master cylinder reservoir to the MAX line with fresh DOT 4 LV brake fluid. Inspect the area under the vehicle for any brake fluid drips.
⚠️A soft or spongy brake pedal indicates air in the system. Do not drive the vehicle until the pedal is firm and maintains pressure.

Reassembly

Reinstall wheel and torque lug nuts to 156 Nm (115 lb-ft) in star pattern
Verify brake pedal is firm before attempting to drive
Top off master cylinder reservoir to MAX line with Motorcraft DOT 4 LV brake fluid
Clean any brake fluid spills from painted surfaces immediately

Verification

Start engine and pump brake pedal - pedal must be firm and not sink to floor under sustained pressure
Inspect all brake hose connections for fluid leaks while assistant applies firm brake pedal pressure
Verify brake hose has proper clearance from suspension, frame, and exhaust throughout full suspension travel (bounce suspension)
Test drive at low speed (under 15 mph) in safe area - verify proper brake response and firm pedal feel
Perform multiple moderate brake applications - pedal should remain firm and consistent
After test drive, recheck all connections for leaks and verify master cylinder fluid level
Road test at normal speeds only after confirming all safety checks - brake performance should be normal with no pulling or unusual pedal feel

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