Power Brake Booster: Notes
- Remove piston rod from booster. Remove push rod clevis and nut. Set booster in Booster Overhaul Tool (09950-88210). See Fig 1 . Ensure that vacuum check valve is not in contact with base of overhaul tool. Tighten 2 nuts on upper part of tool evenly to 26-43 INCH lbs. (3-5 N.m).
- Turn overhaul tool bolt clockwise until indentations on cover No. 2 line-up with projections on body No. 1. After indentations line-up with projections. Scribe matching marks on the 2 bodies to facilitate installation. Remove booster from overhaul tool. Separate booster body No. 1 and No. 2. See Fig 2 .
- Remove piston return spring. From booster body No. 2, remove boot, air cleaner elements, and air cleaner separator in order. Using Camshaft Pulley Holder (09917-68210), turn booster piston counterclockwise and remove piston.
- While compressing air valve spring (by moving rod up and down), remove valve stopper key. See Fig 3
. Remove booster air valve assembly from booster piston.
NOTE: Booster air valve assembly cannot be disassembled.
- Remove diaphragm from pressure plate carefully by hand. Remove reaction disc from booster piston using finger pressure. Drive oil seal from booster body No. 2 using Driver (09951-08210) and Receiver (09951-18210).