Nissan Pathfinder. Manual — part 230
BR-28
< REMOVAL AND INSTALLATION >
BRAKE MASTER CYLINDER
BRAKE MASTER CYLINDER
Exploded View
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Removal and Installation
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REMOVAL
CAUTION:
• Do not spill or 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.
• Do not reuse master cylinder O-rings.
• Do not reuse drained brake fluid.
NOTE:
When removing components such as hoses, tubes/lines, etc., cap or plug openings to prevent fluid from spill-
ing.
1. Disconnect brake fluid level sensor harness connector.
2. Remove air duct assembly and air cleaner case. Refer to
.
3. Disconnect the hose from the reservoir tank.
4. Disconnect the brake pipes from the master cylinder assembly with a flare nut wrench.
CAUTION:
Do not scratch the flare nut or the brake pipe.
5. Remove the master cylinder assembly.
CAUTION:
1.
Sub tank cap
2.
Sub tank
3.
Sub tank bracket
4.
Clamp
5.
Hose
6.
Clamp
7.
Reservoir tank
8.
Grommet
9.
Cylinder body
10. Pin
11.
O-ring
Apply PBC (Poly Butyl Cuprysil) grease or silicone-based grease.
Apply brake fluid.
AWFIA0882GB
BRAKE MASTER CYLINDER
BR-29
< REMOVAL AND INSTALLATION >
C
D
E
G
H
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M
A
B
BR
N
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Do not depress the brake pedal after the master cylinder assembly is removed.
INSTALLATION
CAUTION:
• Do not spill or 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.
• Do not reuse O-ring.
Installation is in the reverse order of removal.
• Apply PBC (Poly Butyl Cuprysil) silicone-based grease to the
brake booster (A) when installing the master cylinder assembly to
the brake booster.
• Temporarily tighten the brake tube flare nut to the master cylinder
assembly by hand. Then tighten it to the specified torque with a
crowfoot and torque wrench. Refer to
.
CAUTION:
Do not scratch the flare nut or the brake pipe.
• After installation, perform the air bleeding. Refer to
.
Disassembly and Assembly
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DISASSEMBLY
CAUTION:
• Do not disassemble the cylinder body.
• Remove the reservoir tank only when necessary.
• Do not drop removed parts. The parts must not be reused if they are dropped.
1. Secure the master cylinder assembly in a vise.
CAUTION:
Always use copper plates or cloth between vise and cylinder body. Do not overtighten the vise.
2. Remove the reservoir tank pin using suitable tools.
CAUTION:
Do not reuse the pin.
3. Remove the reservoir tank and grommets from the cylinder
body. Discard the grommets.
CAUTION:
• Do not drop parts. Dropped parts must not be reused.
• Do not reuse the grommets.
ASSEMBLY
1. Apply new brake fluid to the grommets and install them to the cylinder body.
CAUTION:
Do not use mineral oil such as gasoline or light oil.
2. Install the reservoir tank to the cylinder body.
CAUTION:
Do not drop the parts during installation. The parts must not be reused if they are dropped.
JPFIA0013ZZ
JPFIA0303ZZ
BR-30
< REMOVAL AND INSTALLATION >
BRAKE MASTER CYLINDER
3. Tilt the reservoir tank so that the pin can be inserted. Insert a pin
using suitable tools.
CAUTION:
Do not reuse the pin.
JPFIA0303ZZ
BRAKE BOOSTER
BR-31
< REMOVAL AND INSTALLATION >
C
D
E
G
H
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K
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M
A
B
BR
N
O
P
BRAKE BOOSTER
Exploded View
INFOID:0000000009177193
Removal and Installation
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REMOVAL
1. Remove instrument lower panel LH. Refer to
IP-25, "Removal and Installation"
2. Remove harness clip.
3. Remove the snap pin (1) and clevis pin (2) from the brake pedal.
4. Remove the cowl top extension. Refer to
EXT-25, "Removal and Installation"
5. Disconnect vacuum hose from brake booster. Refer to
BR-33, "Removal and Installation"
6. Remove master cylinder assembly. Refer to
BR-28, "Removal and Installation"
7. Disconnect the harness connector from the booster pressure sensor.
8. Disconnect the I-Key sensor from the strut tower and place aside.
9. Remove the four nuts on the brake booster and brake pedal assembly.
CAUTION:
Secure the brake booster to avoid damage to components.
10. Remove the brake booster from the dash panel on the engine room side.
CAUTION:
Do not deform or bend the brake pipes.
INSTALLATION
1.
Master cylinder assembly
2.
Brake booster
3.
Lock nut
4.
Clevis
5.
Gasket
AWFIA0953ZZ
JPFIA0019ZZ
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