Nissan Pathfinder (2007 year). Instruction — part 112
BRAKE MASTER CYLINDER
BR-17
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BR
2007 Pathfinder
3.
Using a flare nut wrench, disconnect brake tube from master cylinder assembly.
4.
Remove master cylinder assembly mounting nuts and master cylinder assembly.
INSTALLATION
●
Installation is in the reverse order of removal.
●
Refill brake fluid and bleed air. Refer to
BR-12, "Bleeding Brake System"
.
CAUTION:
●
Refill using recommended brake fluid. Refer to
MA-11, "RECOMMENDED FLUIDS AND LUBRI-
●
Do not reuse drained brake fluid.
●
Adjust brake pedal. Refer to
BR-6, "Inspection and Adjustment"
.
Disassembly and Assembly
EFS0063P
DISASSEMBLY
CAUTION:
●
Master cylinder cannot be disassembled.
●
Remove reservoir tank only when absolutely necessary.
Pull reservoir tank off master cylinder sub-assembly, then remove grommets from master cylinder sub-assem-
bly body.
ASSEMBLY
CAUTION:
●
Never use mineral oils such as kerosene, gasoline during the cleaning and assembly process.
●
Do not drop parts. If a part is dropped, do not use it.
1.
Apply brake fluid or rubber grease to new grommets, then insert into master cylinder sub-assembly. Refer
to
GI-47, "RECOMMENDED CHEMICAL PRODUCTS AND SEALANTS"
CAUTION:
Do not reuse grommet.
2.
Install reservoir tank onto master cylinder assembly.
BR-18
BRAKE BOOSTER
2007 Pathfinder
BRAKE BOOSTER
PFP:47200
On-Vehicle Service
EFS0063Q
OPERATING CHECK
With engine stopped, change the vacuum to the atmospheric pres-
sure by depressing brake pedal several times. Then with brake
pedal fully depressed, start engine and when the vacuum pressure
reaches the standard, make sure the clearance between brake pedal
and floor panel decreases.
CAUTION:
Depressing pedal interval is approximately 5 seconds.
AIRTIGHT CHECK
●
Run engine at idle for approximately 1 minute, and stop it after
applying vacuum to booster. Depress brake pedal normally to
change the vacuum to the atmospheric pressure. Make sure dis-
tance between brake pedal and floor panel gradually increases.
●
Depress brake pedal while engine is running and stop engine
with pedal depressed. The pedal stroke should not change after
holding pedal down for 30 seconds.
CAUTION:
Depressing pedal interval is approximately 5 seconds.
BRA0037D
SBR365AA
BRAKE BOOSTER
BR-19
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2007 Pathfinder
Removal and Installation
EFS0063R
Brake Booster
REMOVAL
CAUTION:
●
Be careful not to deform or bend brake piping while removing and installing brake booster.
●
Replace clevis pin if it is damaged.
●
Be careful not to damage brake booster stud bolt threads. If brake booster is tilted or inclined dur-
ing installation, dash panel may damage the threads.
●
Attach the check valve in the correct direction.
1.
Remove actuator and electric unit. Refer to
BRC-61, "Removal and Installation"
.
2.
Remove brake piping from brake master cylinder.
LFIA0241E
1.
Brake booster hose
2.
Brake booster vacuum check valve
3.
Brake booster
4.
Lock nut
5.
Gasket
6.
Spacer block
BR-20
BRAKE BOOSTER
2007 Pathfinder
3.
Remove brake master cylinder. Refer to
BR-16, "Removal and Installation"
4.
Remove vacuum hose from brake booster. Refer to
5.
Remove brake pedal attachment snap pin and clevis pin from inside the vehicle.
6.
Remove nuts on brake booster and brake pedal assembly.
7.
Remove brake booster assembly from dash panel.
INSTALLATION
1.
Loosen lock nut to adjust input rod length so that the length "B"
satisfies the specified value.
2.
After adjusting "B", temporarily tighten lock nut and install
booster assembly to the vehicle.
●
Install a gaskets and spacer block between booster assembly
and the dash panel.
3.
Connect brake pedal with clevis of input rod.
4.
Install brake booster nuts.
5.
Install brake piping from brake master cylinder to actuator and
electric unit. Refer to
6.
Connect vacuum hose to brake booster.
7.
Install master cylinder to booster assembly. Refer to
BR-19, "Removal and Installation"
.
8.
Adjust the height of brake pedal. Refer to
BR-6, "Inspection and Adjustment"
9.
Tighten input rod lock nut.
10. Refill new brake fluid and bleed air. Refer to
BR-12, "Bleeding Brake System"
Length "B"
: 150 mm (5.91 in)
SGIA0060E
VACUUM LINES
BR-21
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BR
2007 Pathfinder
VACUUM LINES
PFP:41920
Removal and Installation
EFS0063S
Brake Booster Vacuum Hose
1.
Disconnect brake booster hose from hose clip mounted on bracket.
2.
Release clips and disconnect brake booster hose.
3.
Remove check valve from brake booster.
4.
Installation is in the reverse order of removal.
CAUTION:
●
Insert vacuum hose for at least 24 mm (0.94 in).
●
Do not use lubricating oil during assembly.
Inspection
EFS0063T
VISUAL INSPECTION
Check for improper assembly, damage and deterioration.
WFIA0332E
1.
Brake booster hose
2.
Brake booster hose clip
3.
Brake booster vacuum check valve
SBR225B
BR-22
VACUUM LINES
2007 Pathfinder
CHECK VALVE INSPECTION
Airtightness Inspection
Use a suitable vacuum pump to check. Connect to brake booster
side of check valve.
Check
valve
specifi-
cation
: Vacuum decrease should be within 1.3
kPa (10 mmHg, 0.39 inHg) for 15 seconds
under a vacuum of – 66.7 kPa (– 500 mmHg,
– 19.69 inHg)
LFIA0217E
FRONT DISC BRAKE
BR-23
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BR
2007 Pathfinder
FRONT DISC BRAKE
PFP:41000
On-vehicle Inspection
EFS0063U
PAD WEAR INSPECTION
●
Inspect the thickness of pad through cylinder body inspection
hole. Use a scale for inspection if necessary.
Standard thickness
: 10.0 mm (0.394 in)
Repair limit thickness
: 2.0 mm (0.079 in)
BRA0010D
BR-24
FRONT DISC BRAKE
2007 Pathfinder
Components
EFS0063V
Front Disc Brake Caliper and Pads
WARNING:
Clean dust on caliper and brake pad with a vacuum dust collector to minimize the hazard of airborne
particles or other materials.
WFIA0537E
1.
Sliding pin bolt
2.
Cylinder body
3.
Piston seal
4.
Piston
5.
Piston boot
6.
Sliding pin
7.
Sliding pin boot
8.
Torque member bolt
9.
Torque member
10.
Upper pad retainer
11.
Outer shim
12. Inner brake pad
13.
Outer brake pad
14. Lower pad retainer
15. Shim cover
16.
Bleed valve
17. Cap
18. Copper washers
19.
Union bolt
20. Brake hose
21. Pad return spring
⇐
: Front
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