Nissan Teana J32. Instruction — part 231
BRAKE MASTER CYLINDER
BR-27
< ON-VEHICLE REPAIR >
C
D
E
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A
B
BR
N
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3.
Fix the cylinder body to a vise.
CAUTION:
• Place the reservoir tank with the chamfered pin hole (
)
facing up.
• Always set copper plates or cloth between vise when fix-
ing the cylinder body to a vise. Never overtighten the vise.
4.
Tilt the reservoir tank so that a mounting pin can be inserted.
Insert a mounting pin. Return the reservoir tank to the horizontal
position. Insert another mounting pin into the pin hole on the
opposite side in the same manner after the mounting pin passes
through the cylinder body pin hole.
CAUTION:
Never reuse the mounting pin.
Inspection
INFOID:0000000003811197
INSPECTION AFTER INSTALLATION
Fluid Leak
Check for brake fluid leakage from the cylinder body-to-brake booster mounting face, reservoir tank mounting
face and brake tube connections.
JPFIA0349ZZ
JPFIA0348ZZ
BR-28
< ON-VEHICLE REPAIR >
BRAKE BOOSTER
BRAKE BOOSTER
Exploded View
INFOID:0000000003811198
Removal and installation
INFOID:0000000003811199
REMOVAL
1.
Remove brake master cylinder assembly. Refer to
.
CAUTION:
• Depress the brake pedal several times to release the vacuum pressure from the brake booster.
Then remove the master cylinder assembly.
• Never depress the brake pedal after the master cylinder assembly is removed.
• The piston of the master cylinder assembly is exposed. Never damage it when removing the
master cylinder.
• The piston may drop off when pulled out strongly. Never hold the piston. Hold the cylinder body
when handling the master cylinder assembly.
2.
Remove vacuum hose from brake booster. Refer to
.
3.
Remove snap pin (1) and clevis pin (2) from inside vehicle.
4.
Remove nuts on brake booster and brake pedal assembly.
CAUTION:
Hold the brake booster so as to avoid dropping out.
5.
Remove brake tube bracket and fuel feed tube bracket.
6.
Remove brake booster from dash panel in engine room side.
CAUTION:
Never deform or bend the brake tubes.
NOTE:
If removing brake booster is difficult, remove clevis from brake
booster.
INSTALLATION
Note the following, and installation is the reverse order of removal.
• Be careful not to damage brake booster stud bolt threads. If brake booster is tilted during installation, the
dash panel may damage the threads.
• Never deform or bend the brake tubes when installing the brake booster.
• Always use a new gasket between the brake booster.
1.
Master cylinder assembly
2.
Brake booster
3.
Lock nut
4.
Clevis
5.
Gasket
Refer to
for symbols in the figure.
JPFIA0350GB
JPFIA0019ZZ
BRAKE BOOSTER
BR-29
< ON-VEHICLE REPAIR >
C
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• Replace the clevis pin if it is damaged. Refer to
BR-18, "Inspection and Adjustment"
• After installation, perform the air bleeding. Refer to
BR-10, "Bleeding Brake System"
.
CAUTION:
Never reuse drained brake fluid.
Inspection and Adjustment
INFOID:0000000003811200
INSPECTION AFTER REMOVAL
Output Rod Length Inspection
1.
With a handy vacuum pump, apply vacuum pressure of
−
66.7
kPa (
−
500 mmHg,
−
19.70 inHg, –0.667 bar) to the brake
booster.
2.
Check the output rod length (A).
Input Rod Length Inspection
1.
Loosen the lock nut (1) and adjust the input rod (2) to the speci-
fied length (B).
2.
Tighten the lock nut to the specified torque.
INSPECTION AFTER INSTALLATION
Operation
Depress the brake pedal several times at 5-second intervals with the
engine stopped. Start the engine with the brake pedal fully
depressed. Check that the clearance between brake pedal and dash
lower pane decreases.
NOTE:
A slight impact with a small click may be felt on the pedal when the
brake pedal is fully depressed. This is a normal phenomenon due to
the brake system operation.
Air Tight
Standard
A
: Refer to
.
JPFIA0021ZZ
Standard
B
: Refer to
.
JPFIA0020ZZ
BRA0037D
BR-30
< ON-VEHICLE REPAIR >
BRAKE BOOSTER
• Idle the engine for 1 minute to apply vacuum to the brake booster,
and stop the engine. Then depress the brake pedal several times
at 5-second intervals until the accumulated vacuum is released to
atmospheric pressure. Check that the clearance between brake
pedal and dash lower panel gradually increases (A
→
B
→
C) each
time the brake pedal is depressed during this operation.
• Depress the brake pedal with the engine running. Then stop the
engine while holding down the brake pedal. Check that the brake
pedal stroke does not change after holding down the brake pedal
for 30 seconds or more.
NOTE:
A slight impact with a small click may be felt on the pedal when the
brake pedal is fully depressed. This is a normal phenomenon due
to the brake system operation.
ADJUSTMENT AFTER INSTALLATION
Perform the brake pedal adjustment after installing the brake pedal assembly. Refer to
.
JPFIA0043ZZ
JPFIA0044ZZ
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