K 3500 Truck 4WD V8-379 6.2L DSL (1985)
Vacuum Brake Booster: Testing and Inspection
Delco Moraine Brake Boosters
Troubleshooting
Hard Pedal
1.
Internal vacuum leak.
2.
Faulty control valve.
Brakes Grab
1.
Faulty control valve.
Slow or No Release
1.
Faulty pushrod adjustment.
2.
Bind in linkage.
Tandem Diaphragm Type
Fig. 3 Delco Moraine tandem power brake unit exploded view
