2003 FORD MUSTANG lock

Four Wheel Anti-
Lock Brake System (4WABS) Hydraulic Control Unit (HCU)
NOTE: This procedure only needs to be performed if the 4- wheel anti-lock brake (4WABS) hydraulic
control unit (HCU) has been installed new or if the HCU lines have been opened.
1. Clean all dirt from and remove the brake master cylinder filler cap (2162), and fill the brake master cylinder reservoir (2K478) with the specified brake fluid.
2. Connect a clear waste line to the RH rear bleeder screw (2208) and the other end in a container partially filled with recommended brake fluid.
3. Loosen the RH rear bleeder screw until a stream of brake fluid comes out. While the assistant maintains pressure on the brake pedal (2455), tighten the RH rear bleeder screw.
zRepeat until clear, bubble- free fluid comes out.
z Refill the brake master cylinder reservoir as necessary.
4. Tighten the RH rear bleeder screw, and disconnect the waste line. Klj . 4 ba
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2.
NOTE: Use a wood block or used pad to protect pistons and boots.
Compress the caliper pistons (2196).
3. Make sure the anti- rattle spring is correctly positioned in the caliper. Klj . 5 ba
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10. Inspect the disc brake caliper.
zIf leaks or damaged boots are found, disassembly is required. For additional information,
refer to Caliper in this section.
11. NOTE: Use a wood block or used pad to protect pistons and boots. Compress the caliper pistons (2196). Klj . 3 ba
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DISASSEMBLY AND ASSEMBLY
Caliper
Disassembly
1. Remove the disc brake caliper (2B120). For additional information, refer to Caliper in this
section.
2. Drain the remaining brake fluid from disc brake caliper.
3. Apply low air pressure to the fluid port in the disc brake caliper. 1. Place a block of wood between the caliper bridge and the caliper pistons (2196).
2. Apply low air pressure to the fluid port in the disc brake caliper and force out the caliper pistons to the block of wood.
4. Remove the caliper pistons. 1. Remove the block of wood.
2. Remove the caliper pistons.
5. Remove and discard the piston seals and boots.
SECTION 206-
03: Front Disc Brake 2003 Mustang Workshop Manual Klj . 1 ba
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DISASSEMBLY AND ASSEMBLY
Caliper
Disassembly
1. Remove the rear disc brake caliper (2552). For additional information, refer to Caliper in the Removal and Installation portion of this section.
2. Drain the brake fluid from the rear disc brake caliper.
3. Secure the rear disc brake caliper in a vise.
4. Turn the rear disc brake piston and adjuster (2B588) counterclockwise with Rear Caliper Piston Adjuster.
SECTION 206-
04: Rear Disc Brake 2003 Mustang Workshop Manual Special Tool(s)
Rear Caliper Piston Adjuster
206-
026 (T87P-2588- A) Rear Caliper Spring
Compressor Set
206-
S027 (T87P-2588- B) Klj . 1 ba
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5. Remove the rear disc brake piston and adjuster from the caliper bore.
6. Remove and discard the piston dust boot seal and piston seal from the caliper bore.
7.
CAUTION: The parking brake lever pin retainer clip (2A746) and spring cover are
spring- loaded. Use care when removing the parking brake lever pin retainer clip.
Remove the parking brake lever pin retainer clip. zUnload the spring tension from the parking brake lever pin retainer clip and spring cover
using Screw and Cross Block, a 6- mm washer head nut and a 1/2-inch drive 14-mm
socket.
z Remove the parking brake lever pin retainer clip with suitable snap- ring pliers.
z Remove Screw and Cross Block. Klj . 2 ba
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DESCRIPTION AND OPERATION
Hydraulic Brake Actuation
CAUTION: Blistering or swelling of rubber brake components may indicate contamination
of the brake fluid by a petroleum based substance. New rubber components must be installed
in the hydraulic brake system if contaminated and the entire hydraulic brake system must be
flushed with clean brake fluid to prevent recontamination.
This vehicle is equipped with a brake pedal actuated dual brake system. The system consists of the
following:
zpower brake booster (2005)
z brake master cylinder (2140)
z brake pressure control valve (2B091)
z disc brake calipers (2B120)
z rear disc brake calipers (2553)
z brake tubes and hoses
z anti- lock brake system (ABS) components
SECTION 206-
06: Hydraulic Brake Actuation 2003 Mustang Workshop Manual Item Part Number Description
1 2K478 Master cylinder reservoir
2 2140 Master cylinder
3 — Pedal support bracket (part of 2455)
4 2455 Brake pedal Klj . 1 ba
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REMOVAL AND INSTALLATION
Brake Booster —
Vacuum
Removal 1. Disconnect the battery ground cable (14301). For additional information, refer to Section 414 -
01 .
2. Remove the air cleaner housing. For additional information, refer to Section 303 - 12 .
3. Remove the brake master cylinder nuts.
4. Position the brake master cylinder (2140) aside.
5. With the engine off, depress the brake pedal (2455) several times to discharge the accumulator. Disconnect the booster vacuum hose.
6. Remove the stoplight switch self- locking pin.
SECTION 206-
07: Power Brake Actuation 2003 Mustang Workshop Manual Klj . 1 ba
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