Nissan Note E12. Instruction — part 73
BR-28
< REMOVAL AND INSTALLATION >
BRAKE MASTER CYLINDER
CAUTION:
• Do not bend sharply, twist, or strongly pull out the brake tubes.
• Do not depress the brake pedal after the brake master cylinder is removed.
• The piston of the brake master cylinder is exposed. Do not damage it when removing the brake
master cylinder.
7. Remove and discard the O-ring.
INSTALLATION
Installation is in the reverse order of removal.
CAUTION:
• Do not reuse the seal.
• Do not reuse the O-ring.
• Check that no dirt and dust are present on the piston before installation. Clean it with new brake fluid
if necessary.
• Check that all brake tubes are not excessively bent, kinked or twisted.
• Do not allow foreign matter (e.g. dust) and oils other than brake fluid to enter the sub tank and reser-
voir tank.
• Apply silicone grease to the brake booster (A) as shown when
installing the brake master cylinder to the brake booster.
• Temporarily tighten the brake tube flare nut to the brake master cylinder by hand. Then tighten it to the spec-
ified torque using a crowfoot and torque wrench. Refer to
BR-21, "FRONT : Exploded View"
CAUTION:
Do not scratch the flare nut or the brake tubes.
• After installation, perform the air bleeding. Refer to
BR-12, "Bleeding Brake System"
.
CAUTION:
Do not reuse drained brake fluid.
• Perform the inspection after installation. Refer to
Disassembly and Assembly
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DISASSEMBLY
CAUTION:
• Do not disassemble the brake master cylinder.
• Remove the reservoir tank only when necessary.
Remove the reservoir tank and grommets from the brake master cylinder.
ASSEMBLY
CAUTION:
• Do not use mineral oils such as kerosene or gasoline and rubber grease during the cleaning and
assembly process.
• Do not drop the parts. The parts must not be reused if they are dropped.
• Do not allow foreign matter (e.g. dust) and oils other than brake fluid to enter the reservoir tank.
1. Apply new brake fluid to the grommets and install on brake master cylinder.
CAUTION:
Do not reuse the grommets.
2. Install the reservoir tank to the brake master cylinder.
Inspection
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INSPECTION BEFORE REMOVAL
JPFIA0013ZZ
BRAKE MASTER CYLINDER
BR-29
< REMOVAL AND INSTALLATION >
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Check the brake fluid level switch. Refer to
.
INSPECTION AFTER INSTALLATION
Check the following items and replace if necessary.
• Check the brake master cylinder for deformation, twist, contact with other parts or looseness of connection.
• Check for fluid leaks from connections. Refer to
.
CAUTION:
If fluid leaks are present, retighten connections to the specified torque. Refer to
. Replace components if necessary.
BR-30
< REMOVAL AND INSTALLATION >
BRAKE BOOSTER AND CHECK VALVE
BRAKE BOOSTER AND CHECK VALVE
Exploded View
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Removal and installation
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CAUTION:
Do not spill or splash brake fluid on painted surfaces. Brake fluid may seriously damage paint. Wipe it
off immediately and wash with water if it gets on a painted surface.
REMOVAL
1. Remove brake master cylinder. Refer to
BR-27, "Removal and Installation"
.
2. Remove battery tray. Refer to
PG-70, "Removal and Installation (Battery Tray)"
3. Remove ECM. Refer to
EC-338, "Removal and Installation"
.
4. Remove TCM (if equipped). Refer to
TM-235, "Removal and Installation"
.
5. Remove vacuum hose from check valve. Refer to
.
6. Remove instrument lower panel LH. Refer to
IP-24, "Removal and Installation"
.
7. Remove knee bolster. Refer to
.
8. Remove the snap pin (1) and clevis pin (2). Refer to
9. Remove nuts on brake booster and brake pedal. Refer to
10. Remove brake booster from dash panel on engine room side.
CAUTION:
Do not deform or bend the brake tubes.
NOTE:
If removing brake booster is difficult, remove clevis from brake
booster.
11. Remove check valve from brake booster.
12. Perform inspection after removal. Refer to
BR-31, "Inspection and Adjustment"
.
INSTALLATION
CAUTION:
• Do not reuse drained brake fluid.
• Do not reuse the gasket.
1.
Brake master cylinder
2.
Check valve
3.
Brake booster
4.
Lock nut
5.
Clevis
6.
Gasket
AWFIA1022ZZ
JPFIA0019ZZ
BRAKE BOOSTER AND CHECK VALVE
BR-31
< REMOVAL AND INSTALLATION >
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• Be careful not to damage brake booster stud bolt threads. If brake booster is tilted during installa-
tion, the dash panel may damage the threads.
• Check that all brake tubes are not excessively bent, kinked or twisted.
• Do not allow foreign matter (e.g. dust) and oils other than brake fluid to enter the reservoir tank.
Installation is in the reverse order of removal.
• Set check valve angle (A) as shown.
• After installation, perform the air bleeding. Refer to
.
CAUTION:
Do not reuse drained brake fluid.
• Perform the inspection after installation. Adjust the brake pedal
height and play if necessary. Refer to
.
Inspection and Adjustment
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INSPECTION AFTER REMOVAL
Check Valve Vacuum Inspection
1. Check the vacuum using a suitable tool.
2. If the vacuum still cannot be maintained, replace the check valve.
Input Rod Length Inspection
1. Loosen the lock nut (1) and adjust the input rod (2) to the speci-
fied length (A).
2. Tighten the lock nut to the specified torque. Refer to
INSPECTION AFTER INSTALLATION
Inspect the brake booster operation. Refer to
.
ADJUSTMENT AFTER INSTALLATION
Inspect the brake pedal height and play. Adjust it if the measurement is not the standard. Refer to
.
Check valve angle
: 45
°
JPFIA0871ZZ
When connected to the booster side
: Refer to
When connected to the vacuum hose side : Refer to
Input rod
length
: Refer to
JPFIA0238ZZ
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