G 30 Van V8-454 7.4L VIN N TBI (1995)
Vacuum Brake Booster: Description and Operation
Tandem Diaphragm Type
Fig. 6 Exploded View Of Delco-Moraine Tandem Power Brake Unit
Fig. 7 Exploded View Of Delco-Moraine Tandem Diaphragm Power Piston Assembly
DESCRIPTION
These units, Figs. 6 and 7, have a vacuum power chamber that consists of a front and rear shell, a housing divider, front and rear diaphragm and
plate assemblies, an hydraulic pushrod and a diaphragm return spring.
