Vacuum Booster Assembly; Vacuum Booster Assembly And Associated Parts; Removal; Inspection And Repair - Isuzu 1999 RODEO Workshop Manual

Vacuum Booster Assembly and Associated Parts

Legend
(1) Pin
(2) Vacuum Booster Fixing Nut
(3) Vacuum Hose

Removal

1. Before removing the vacuum booster assembly,
disconnect and remove the brake pipes.
2. Remove master cylinder, refer to "Master Cylinder
Removal" in this section.
CAUTION: When removing the master cylinder from
the vacuum booster, be sure to get rid of the internal
negative pressure of the vacuum booster (by, for
instance, disconnecting the vacuum hose) in
advance.
If any negative pressure remains in the vacuum
booster, the piston may possibly come out when the
master cylinder is being removed, letting the brake
fluid run out.
While removing the master cylinder, further, do not
hold the piston as it can be easily pulled out.

Vacuum Booster Assembly

POWER–ASSISTED BRAKE SYSTEM
(4) Master Cylinder
(5) Vacuum Booster
(6) Snap Pin
Outside surface of the piston is the surface on which
seals are to slide. Care should be taken to keep the
surface free of cuts and dents.
3. Remove vacuum hose.
4. Disconnect the yoke clevis from the brake pedal.
5. Remove vacuum booster fixing nut.
6. Remove vacuum booster.

Inspection and Repair

Vacuum Hose
1. Inspect the check valve (2), which is installed inside
the vacuum hose.
2. Air should pass freely from the vacuum booster (3) to
the engine (1).
5C–25
331RW005