Isuzu Amigo / Axiom / Trooper / Rodeo / VehiCross. Service manual — part 696
5C–28 POWER ASSISTED BRAKE SYSTEM
Exterior Components
Exterior Components and Associated Parts
331RW004
Legend
(1) Yoke Clevis
(2) Lock Nut
(3) Retaining Clip
(4) Valve Body Guard
(5) Silencer
(6) Filter
(7) 2 Gaskets and Spacer
(8) Vacuum Booster
(9) Retainer
(10) Plate and Seal Assembly
(11) Master Cylinder
Removal
1. Remove master cylinder, refer to “Master Cylinder” in
this section.
2. Remove vacuum booster, refer to “Vacuum Booster”
in this section.
3. Remove yoke clevis.
4. Remove lock nut.
5. Remove retaining clip.
6. Remove valve body guard.
7. Remove silencer.
8. Remove filter.
9. Remove 2 gaskets and spacer.
10. Remove retainer, use a small screwdriver to pry out
the retainer. Gently pull out the plate and seal
assembly from the shell.
331RS003
5C–29
POWER ASSISTED BRAKE SYSTEM
11. Remove plate and seal assembly.
Inspection and Repair
Visual Check
Make necessary parts replacement if cuts, nicks,
excessive wear, or other abnormal conditions are found
through inspection. Check the following parts:
D
Yoke clevis
D
Valve body guard
D
Silencer
D
Filter plate and seal assembly
Installation
1. Install plate and seal assembly.
2. Install retainer.
3. Install 2 gaskets and spacer.
4. Install filter.
5. Install silencer.
6. Install valve body guard.
7. Install retainer.
8. Install lock nut and tighten to the specified torque.
Torque: 20 N·m (15 lb ft)
9. Install yoke clevis.
10. Install vacuum booster, refer to “Vacuum Booster” in
this section.
11. Install master cylinder, refer to “Master Cylinder” in
this section and after installation, perform brake pedal
check and adjustment. Refer to “Brake Pedal” in this
section.
Vacuum Booster Overhaul
Vacuum Booster
The vacuum booster cannot be disassembled for repair.
Replace a defective vacuum booster with a new one.
5C–30 POWER ASSISTED BRAKE SYSTEM
Main Data and Specifications
General Specifications
Vacuum booster diaphragm diameter (Front)
205 mm (8.07 in)
Vacuum booster diaphragm diameter (Rear)
230 mm (9.06 in)
Push rod stroke
More than 32.0 mm (1.26 in)
Plunger diameter
10.25 mm (0.40 in)
Push rod diameter
27.4 mm (1.08 in)
Torque Specifications
C05RT003
5C–31
POWER ASSISTED BRAKE SYSTEM
Special Tools
ILLUSTRATION
TOOL NO.
TOOL NAME
J-39216
Push Rod Gauge
J-23738-A
Vacuum Pump
J-39241
Push Rod Support
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