Section 06-09B: Brake, Anti-Lock, 4-Wheel | 1996 Bronco Workshop Manual |
The power brake booster (2005) serves to increase, through vacuum assist, the effective foot pressure on the brake pedal (2455).
A vacuum-type power brake booster is a container whose inner space is divided by a diaphragm into two separate chambers. The brake pedal-to-power brake booster push rod enters on one side, and the brake master cylinder push rod exits on the other.
The brakes can also be applied manually if the reserve system is depleted.