F 350 4WD Pickup V8-351 5.8L VIN H EFI (1997)
Snap Ring
5. Depress the primary piston and remove snap ring from retaining groove at the rear of the brake master cylinder bore.
6. Remove primary piston assembly from the brake master cylinder bore. Discard assembly.
7. Remove the secondary piston assembly by directing compressed air into the outlet port at the blind end of the bore while plugging the other outlet
port. Discard assembly.
8. Inspect the brake master cylinder bore for signs of etching, pitting, scoring or other damage.
a. If bore is damaged, discard and replace with new brake master cylinder. Do not attempt to hone bore.
b. If bore is not damaged, rebuild brake master cylinder using the proper repair kit and the procedure below.
ASSEMBLY
1. Clean the brake master cylinder body with clean isopropyl alcohol to remove any contamination.
2. Dip the repair kit piston assemblies in clean Ford High Performance DOT 3 Brake Fluid C6AZ-19542-AA or equivalent DOT 3 fluid meeting
Ford specification ESA-M6C25-A to lubricate seals.
3. Carefully insert the complete secondary piston assembly in the brake master cylinder bore.
4. Carefully insert the primary piston assembly in the brake master cylinder bore.
5. Depress the primary piston and install the snap ring in the groove in the brake master cylinder bore.
6. Install the stop bolt into the bottom of the brake master cylinder.
7. If so equipped, install the brake master cylinder fluid control valve into the brake master cylinder.
8. Install the brake master cylinder filler cap on the brake master cylinder reservoir.
9. Install the brake master cylinder on vehicle.
10. Bleed the brakes. Refer to Service Procedures in this section. Check for proper brake operation.
Removal and Installation
WARNING: BRAKE FLUID CONTAINS POLYGLYCOL ETHERS AND POLYGLYCOLS. AVOID CONTACT WITH EYES. WASH
HANDS THOROUGHLY AFTER HANDLING. IF BRAKE FLUID CONTACTS EYES, FLUSH EYES WITH RUNNING
WATER FOR 15 MINUTES. GET MEDICAL ATTENTION IF IRRITATION PERSISTS. IF TAKEN INTERNALLY, DRINK
WATER AND INDUCE VOMITING. GET MEDICAL ATTENTION IMMEDIATELY.
REMOVAL
1. Disconnect the battery ground cable.
2. With the engine turned off, push the brake pedal down to expel vacuum from the power brake booster.
3. Disconnect fluid level indicator switch connector from the brake master cylinder.
4. Disconnect the front brake tube and brake master cylinder connector tube from the brake master cylinder.
Brake Master Cylinder
5. Remove the nuts retaining power brake booster to brake master cylinder. Remove the brake master cylinder from the power brake booster.
