Disc Brake Caliper

Fig 1: Padding Caliper Interior - Typical

Courtesy of CHRYSLER LLC

Remove brake shoes from caliper.
Drain brake fluid out of caliper.
Take a piece of wood and pad it with one-inch thickness of shop towels (1). Place this piece in the outboard shoe side of the caliper in front of the piston. This will cushion and protect caliper piston during removal.

Fig 2: Removing Caliper Piston - Typical
Courtesy of CHRYSLER LLC
Remove caliper piston (2) with short bursts of low pressure compressed air. Direct air through fluid inlet port and ease piston out of bore.
CAUTION: Do not blow the piston out of the bore with sustained air pressure. This could result in a cracked piston. Use only enough air pressure to ease the piston out.

WARNING: Never attempt to catch the piston as it leaves the bore. This may result in personal injury.

Fig 3: Removing Caliper Piston Dust Boot - Typical
Courtesy of CHRYSLER LLC
Remove caliper piston dust boot with suitable pry tool (1).

Fig 4: Removing Piston Seal - Typical
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Remove caliper piston seal with wood or plastic tool (1). Do not use metal tools as they will scratch piston bore.

Fig 5: Mounting Bolt Bushing & Boot - Typical
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Remove caliper mounting bolt bushings (1) and boots (2).