Infiniti Q45. Manual — part 254
BRAKE MASTER CYLINDER
BR-17
C
D
E
G
H
I
J
K
L
M
A
B
BR
●
Do not drop the parts. Do not use any dropped parts.
Models without ICC
1.
Apply brake fluid to the inner wall of cylinder body and contact surface of the piston assembly.
2.
Insert secondary piston and primary piston assembly into cylin-
der body in this order.
CAUTION:
●
Do not reuse primary and secondary piston assemblies.
●
Pay attention to the orientation of the piston cup, and
insert straight to prevent the cup from being caught by
the inner wall of the cylinder.
●
Always replace the inner kit as an assembly.
3.
Install the piston stopper through a slit of secondary piston,
while setting the slit of the piston towards a hole of cylinder
body.
CAUTION:
Always replace the piston pin O-ring with new one in the
repair kit.
4.
Insert plate and guide assembly into cylinder body.
CAUTION:
●
Be careful not to damage the rod of the primary piston.
●
Pay attention to the orientation of guide assembly.
●
Do not drop the O-ring.
●
Be careful guide assembly and plate are inserted at a
right angle.
●
Do not reuse plate and guide assembly.
5.
Be careful not to damage the rod of the primary piston with cov-
ering cloths. Then insert snap ring to cylinder with pushing pri-
mary piston.
CAUTION:
●
Make sure that snap ring is securely engaged at a groove
in the cylinder body inner diameter.
●
Do not reuse the snap ring.
6.
Apply brake fluid to grommet, and press it into cylinder body to install.
CAUTION:
Do not reuse grommet.
SFIA0788E
BRA0560D
SFIA1293E
BRA0561D
BR-18
BRAKE MASTER CYLINDER
7.
Install reservoir tank to cylinder body.
8.
Clamp the flange of cylinder body in the figure.
CAUTION:
●
Use copper plates or cloths to protect the flange when
securing in a vise.
●
Pay attention to the orientation of the cylinder body.
9.
Using a pin punch [commercial service tool: approx. 4mm (0.16
in) dia.], attach the reservoir tank mounting pin so that the
attachment side and the opposite are identical.
BRA0568D
BRA0558D
SFIA0702E
BRAKE MASTER CYLINDER
BR-19
C
D
E
G
H
I
J
K
L
M
A
B
BR
Models with ICC
1.
Apply brake fluid to the inner wall of cylinder body and contact surface of the piston assembly.
2.
Insert secondary piston and primary piston assembly into cylin-
der body in this order.
CAUTION:
●
Do not reuse primary and secondary piston assemblies.
●
Pay attention to the orientation of the piston cup, and
insert straight to prevent the cup from being caught by
the inner wall of the cylinder.
●
Always replace the inner kit as an assembly.
3.
Insert plate and guide assembly into the cylinder body.
CAUTION:
●
Be careful not to damage the rod of the primary piston.
●
Pay attention to the orientation of guide assembly.
●
Do not drop the O-ring.
●
Be careful guide assembly and plate are inserted at a
right angle.
●
Do not reuse plate and guide assembly.
4.
Be careful not to damage the rod of the primary piston with cov-
ering cloths. Then insert snap ring to cylinder with pushing pri-
mary piston.
CAUTION:
●
Make sure that snap ring is securely engaged at a groove
in the cylinder body inner diameter.
●
Do not reuse the snap ring.
5.
Install the piston stopper through a slit of secondary piston,
while setting the slit of the piston to wards a piston stopper hole
of cylinder body.
CAUTION:
Always replace piston pin, O-ring with new one in the repair
kit.
6.
Apply brake fluid to grommet, and press it into master cylinder to
install.
CAUTION:
Do not reuse grommet.
7.
Press a reservoir tank in the cylinder body.
SFIA0788E
SFIA1469E
BRA0561D
SFIA0997E
BR-20
BRAKE BOOSTER
BRAKE BOOSTER
PFP:47200
On-Vehicle Inspection
NFS000BK
OPERATING CHECK
With engine stopped, change a vacuum to atmospheric pressure by
depressing brake pedal several times. Then with brake pedal fully
depressed, start engine and when a vacuum reaches the standard,
make sure that 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 vacuum to atmospheric pressure. Make sure that dis-
tance between brake pedal and floor panel gradually increases.
CAUTION:
Depressing brake pedal is approximately at intervals of 5
seconds.
Components
NFS000I0
BRA0037D
SBR365AA
1.
Reservoir tank
2.
Master cylinder
3.
Gasket
4.
Brake pedal
5.
Lock nut
6.
Brake booster
7.
Solenoid harness connector
(only ICC model)
SFIA2485E
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