Brake Booster: Disassembly
- Remove pushrod boot, silencer, front housing seal, grommet and vacuum check valve.
- Scribe a mark on front and rear housings for reassembly reference. Scribe and unstake staked tabs. Install booster in Adapter (J-35883) and Holding Fixture (J-23456). See Fig 1
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Courtesy of GENERAL MOTORS CORP.
- Tighten fixture handscrew just enough to allow for housing rotation. Turn fixture handle counter-clockwise until tabs on front housing are moved to unlocked position.
- Remove power piston group, power piston return spring, and power piston bearing. Remove piston rod, reaction retainer and power head silencer.
- Grasp assembly at outside edge of divider and diaphragms. Hold with pushrod down against a hard surface. Use a slight force or impact to dislodge diaphragm retainer.
- Remove primary diaphragm, primary support plate, secondary power piston bearing, housing divider, secondary support plate and diaphragm and power piston assembly.