Page 529 of 2898
SBR229E
1. Loosen lock nut and adjust pedal free height by turning brake
booster input rod. Then tighten lock nut.
2. Check pedal free play.
Make sure that stop lamps go off when pedal is released.
3. Check brake pedal's depressed height while engine is running.
If lower than specification, check brake system for leaks, accu-
mulation of air or any damage to components (master cylinder,
wheel cylinder, etc.); then make necessary repairs.
BRAKE PEDAL AND BRACKET
Adjustment (Cont'd)
BR-13
Page 530 of 2898
RemovalNJBR0112
SBR554EA
1. Reservoir cap
2. Oil filter
3. Reservoir tank
4. Seal5. Cylinder body
6. O-ring
7. Piston stopper8. Secondary piston assembly
9. Primary piston assembly
10. Stopper cap
CAUTION:
Be careful not to splash brake fluid on painted areas; it may
cause paint damage. If brake fluid is splashed on painted
areas, wash it away with water immediately.
1. Connect a vinyl tube to front caliper air bleeder valve.
2. Drain brake fluid from each front caliper air bleeder valve,
depressing brake pedal to empty fluid from master cylinder.
3. Remove brake pipe flare nuts.
4. Remove master cylinder mounting nuts.
MASTER CYLINDER (TOKICO)
Removal
BR-14
Page 531 of 2898
SBR938A
DisassemblyNJBR01131. Bend claws of stopper cap outward and remove stopper cap.
SBR231C
2. Remove valve stopper while piston is pushed into cylinder.
3. Remove piston assemblies.
If it is difficult to remove secondary piston assembly,
gradually apply compressed air through fluid outlet.
4. Draw out reservoir tank.
InspectionNJBR0114Check for the following items.
Replace any part if damaged.
Master cylinder:
+Pin holes or scratches on inner wall.
Piston:
+Deformation of or scratches on piston cups.
SBR354C
AssemblyNJBR01151. Insert secondary piston assembly. Then insert primary piston
assembly.
+Pay attention to alignment of secondary piston slit with valve
stopper mounting hole of cylinder body.
SBR940A
2. Install stopper cap.
Before installing stopper cap, ensure that claws are bent
inward.
3. Push reservoir tank seals into cylinder body.
4. Push reservoir tank into cylinder body.
MASTER CYLINDER (TOKICO)
Disassembly
BR-15
Page 532 of 2898
SBR222B
5. Install valve stopper while piston is pushed into cylinder.
SBR704C
InstallationNJBR0116CAUTION:
+Refill with new brake fluid ªDOT 4º.
+Never reuse drained brake fluid.
1. Place master cylinder onto brake booster and secure mount-
ing nuts lightly.
2. Torque mounting nuts.
: 12 - 15 N´m (1.2 - 1.5 kg-m,9-11ft-lb)
3. Fill up reservoir tank with new brake fluid.
4. Plug all ports on master cylinder with fingers to prevent air
suction while releasing brake pedal.
5. Have driver depress brake pedal slowly several times until no
air comes out of master cylinder.
6. Fit brake lines to master cylinder.
7. Tighten flare nuts.
: 15 - 18 N´m (1.5 - 1.8 kg-m, 11 - 13 ft-lb)
8. Bleed air from brake system. Refer to ªBleeding Brake
Systemº, BR-9.
MASTER CYLINDER (TOKICO)
Assembly (Cont'd)
BR-16
Page 533 of 2898
RemovalNJBR0117
SBR766E
1. Reservoir cap
2. Oil filter
3. Reservoir tank
4. Seal5. Cylinder body
6. Elastic pin
7. Piston stopper pin8. Secondary piston assembly
9. Primary piston assembly
10. Circlip
CAUTION:
Be careful not to splash brake fluid on painted areas; it may
cause paint damage. If brake fluid is splashed on painted
areas, wash it away with water immediately.
1. Connect a vinyl tube to front caliper air bleeder valve.
2. Drain brake fluid from each front caliper air bleeder valve,
depressing brake pedal to empty fluid from master cylinder.
3. Remove brake pipe flare nuts.
4. Remove master cylinder mounting nuts.
DisassemblyNJBR01181. Remove the circlip.
MASTER CYLINDER [BOSCH (NABCO)]
Removal
BR-17
Page 534 of 2898

SBR231E
2. Drive out elastic pin from cylinder body.
3. Remove reservoir tank and seals.
SBR232E
4. Remove piston stopper pin while piston is pushed into cylinder.
5. Remove piston assemblies.
If it is difficult to remove secondary piston assembly,
gradually apply compressed air through fluid outlet.
InspectionNJBR0119Check for the following items.
Replace any part if damaged.
Master cylinder:
+Pin holes or scratches on inner wall.
Piston:
+Deformation of or scratches on piston cups.
SBR233E
AssemblyNJBR01201. Insert secondary piston assembly. Then insert primary piston
assembly.
+Pay attention to alignment of secondary piston slit with
valve stopper mounting hole of cylinder body.
SBR232E
2. Install piston stopper pin while piston is pushed into cylinder.
Then secure the primary and secondary piston assemblies
with circlip.
3. Push reservoir tank seals and reservoir tank into cylinder body.
4. Install elastic pin.
MASTER CYLINDER [BOSCH (NABCO)]
Disassembly (Cont'd)
BR-18
Page 535 of 2898
SBR236E
InstallationNJBR0121CAUTION:
+Refill with new brake fluid ªDOT 4º.
+Never reuse drained brake fluid.
1. Place master cylinder onto brake booster and secure mount-
ing nuts lightly.
2. Torque mounting nuts.
: 13 - 15 N´m (1.3 - 1.5 kg-m,9-11ft-lb)
3. Fill up reservoir tank with new brake fluid.
4. Plug all ports on master cylinder with fingers to prevent air
suction while releasing brake pedal.
5. Have driver depress brake pedal slowly several times until no
air comes out of master cylinder.
6. Fit brake lines to master cylinder.
7. Tighten flare nuts.
: 15 - 18 N´m (1.5 - 1.8 kg-m, 11 - 13 ft-lb)
8. Bleed air from brake system.
MASTER CYLINDER [BOSCH (NABCO)]
Installation
BR-19
Page 536 of 2898

SBR002A
SBR365AA
On-vehicle ServiceNJBR0023OPERATING CHECKNJBR0023S011. Stop engine and depress brake pedal several times. Check
that pedal stroke does not change.
2. Depress brake pedal, then start engine. If pedal goes down
slightly, operation is normal.
AIRTIGHT CHECKNJBR0023S021. Start engine, and stop it after one or two minutes. Depress
brake pedal several times slowly. The pedal should go further
down the first time, and then it should gradually rise thereaf-
ter.
2. Depress brake pedal while engine is running, and stop engine
with pedal depressed. The pedal stroke should not change
after holding pedal down for30 seconds.
SBR232CB
RemovalNJBR0024CAUTION:
+Be careful not to splash brake fluid on painted areas; it
may cause paint damage. If brake fluid is splashed on
painted areas, wash it away with water immediately.
+Be careful not to deform or bend brake pipes, during
removal of booster.
SBR208E
InspectionNJBR0025OUTPUT ROD LENGTH CHECKNJBR0025S011. Apply vacuum of þ66.7 kPa (þ667 mbar, þ500 mmHg, þ19.69
inHg) to brake booster with a handy vacuum pump.
2. Add preload of 19.6 N (2 kg, 4.4 lb) to output rod.
3. Check output rod length.
Specified length:
10.275 - 10.525 mm (0.4045 - 0.4144 in)
BRAKE BOOSTER
On-vehicle Service
BR-20