Crown Victoria V8-281 4.6L SFI (1998)
Brake Caliper: Service and Repair
Front
DISASSEMBLY
1. Remove disc brake caliper.
2. Apply air pressure to the fluid port of disc brake caliper to remove caliper pistons using a rubber-tipped air gun.
CAUTION: Use a wooden block or layers of shop towels to cushion possible impact of the wheel caliper pistons against the front disc brake
caliper casting when caliper pistons come out of the piston bores. Do not use a screwdriver or similar tool to pry a caliper piston out of the borer as
damage to the wheel caliper piston can result. If a wheel caliper piston is seized and cannot be forced from the disc brake caliper, tap lightly
around the piston while applying air pressure. Use care because the wheel caliper piston can develop considerable force from pressure buildup.
3. Remove and discard the dust boots from the front disc brake caliper assembly.
4. Remove and discard the rubber piston seals.
5. Remove and discard the bleeder screw and bleeder screw cap.
ASSEMBLY
1. Clean and inspect the caliper pistons and the disc brake caliper.
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Remove dirt and debris.
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Examine the caliper pistons for surface irregularities, scoring or wear. Replace damaged caliper pistons.
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Clean the caliper bores with Metal Parts Brake Cleaner F5AZ-2C410-AA or equivalent meeting Ford specification ESE-M1C171-A.
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If the caliper bores are corroded or excessively scored, replace the disc brake caliper.
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Lubricate the caliper pistons and piston seals before assembly.
CAUTION: Do not hone the caliper bores. Caliper pistons are not available for honed caliper bores.
2. Install new piston seal and dust boot.
3. Start caliper pistons into caliper bores by hand to assure correct alignment.
