Regal V6-231 3.8L Turbo VIN 7 FI (1986)
Hydraulic Brake Booster: Service and Repair
Assembly
CAUTION:Do not immerse pressure switch (1) or E-H pump (8) in alcohol. Exterior surfaces may be wiped with a clean cloth lightly moistened with
denatured alcohol if necessary.
Exploded View Of Powermaster Assembly
Cleaning and Inspection:
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Clean all parts except pressure switch (1) and E-H pump (8) in clean, denatured alcohol.
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Dry with filtered compressed air.
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Inspect all metal parts for cracks, distortion or other evidence of structural damage.
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Inspect primary sealing surfaces on power piston (25) for scoring, deep scratches or other damage that would cause leakage. if noted replace
power piston assembly.
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Inspect power piston and master cylinder bores in Powermaster body for scoring or corrosion. If noted, replace power brake assembly. No
abrasives shall be used.
NOTE:
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Use clean, fresh brake fluid to lubricate parts prior to assembly.
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Lubricate new rubber O-rings, grommets and seals with clean brake fluid just prior to assembly.
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Lubricate master cylinder and power piston bores in Powermaster body before installing parts.
