Nissan Primera P12. Instruction — part 119

BRAKE MASTER CYLINDER

BR-15

C

D

E

G

H

I

J

K

L

M

A

B

BR

CAUTION:

(Model with ESP/TCS/ABS)

●

Do not damage and stain the rod of the primary piston.

●

Do not reuse the O-ring seal, and primary piston.

●

Apply silicon grease for the O-ring seal and primary piston.

3.

Tighten brake tube flare nuts.

4.

Refill with new brake fluid and bleed air from the brake piping.

Disassembly and Assembly

EFS002V3

DISASSEMBLY
Model with ABS

CAUTION:

Remove master cylinder reservoir tank only when necessary.
1.

Using a slotted screwdriver as shown in the figure, lever stopper
cap tabs up and remove stopper cap. While removing, be sure
to hold cap securely to prevent the master cylinder piston from
popping out.

2.

Secure cylinder body flange in a vise as shown in the figure.

CAUTION:

●

Secure with chamfered pin insert hole on the cylinder
body facing upward.

●

When securing in the vise, use copper plates or cloth to
protect the flange.

3.

Using a pin punch [tool: diameter Approx. 4 mm (0.16 in)],
remove reservoir tank mounting pins.

4.

Remove master cylinder assembly from the vise.

5.

Remove reservoir tank and grommet from the cylinder body.

6.

Using a Phillips screwdriver, press and hold piston pin as shown
in the figure. Remove piston stopper from the cylinder body.

7.

Carefully pull primary piston assembly straight out to prevent
damage to the cylinder inner wall.

8.

Tap flange against a wood block to loosen secondary piston
assembly. Carefully pull secondary piston assembly straight out
to prevent damage to the cylinder inner wall.

: 14.8 - 17.6 N·m (1.5 - 1.7 kg-m, 11 - 12 ft-lb)

NBR386

BRA0031D

MFIA0002E

BRA0519D

BR-16

BRAKE MASTER CYLINDER

Models with ESP/TCS/ABS

CAUTION:

Be careful not to damage rod of primary piston with covering cloths in acting.
1.

Tighten the flange of the cylinder body in base in the figure.

CAUTION:

●

Pay attention to the orientation of master cylinder body.

●

Use the copper plate or closes for fixing the body in the
vise.

2.

Using the pin-punch [commercial service tool: dia approx. 4mm
(0.16 in)], remove pin form reservoir tank.

3.

Remove the master cylinder assembly from the vise.

4.

Remove the reservoir tank and grommet from the cylinder body.

5.

Push the primary piston and remove the stopper pin from sec-
ondary tank boss hole in the cylinder body.

CAUTION:

Be careful not to damage the inner wall of the cylinder.

6.

Remove the snap ring in pushing primary piston.

CAUTION:

Be careful not to put out the piston.

7.

Holding the rod of the primary piston, remove the primary piston
assembly, the plate and the guide with pulling straight to prevent
the cup from being caught by the inner wall of the cylinder.

8.

Remove the plate and the guide from primary piston.

CAUTION:

Be careful not to damage the rod from the inner wall of the
plate.

INSPECTION AFTER REMOVAL

●

Check cylinder inner wall for damage, wear, corrosion, and pinholes. Replace cylinder if damage, wear, or
corrosion is detected.

MFIA0003E

MFIA0004E

BRA0560D

BRA0561D

BRA0561D

BRAKE MASTER CYLINDER

BR-17

C

D

E

G

H

I

J

K

L

M

A

B

BR

ASSEMBLY
Model with ABS

CAUTION:

●

Never use mineral oils such as kerosene or gasoline during the cleaning and assembly processes.

●

Be sure there is no foreign material on the cylinder inner wall, piston, and cup seal. Be careful not
to damage parts with a service tool during assembly.

●

Do not drop the parts. Do not use any dropped parts.

1.

Apply brake fluid to the inner wall of cylinder body and contact
surface of the piston assembly. Then insert secondary piston
assembly and primary piston assembly into cylinder body in this
order.

CAUTION:

●

Do not reuse primary and secondary piston assemblies.

●

Always replace the inner kit as an assembly.

●

Pay attention to orientation of the piston cup. Insert it
straight in order to prevent it from catching on the cylin-
der's inner wall.

2.

Visually check secondary piston slit position through cylinder
body secondary tank boss hole and install piston stopper.

3.

Hold piston with stopper cap. Press stopper cap in until its tabs
fully engage groove on the cylinder body.

CAUTION:

Do not reuse stopper cap.

4.

Apply brake fluid to grommet before pressing it into cylinder
body.

CAUTION:

Do not reuse grommet.

5.

Secure cylinder body flange in a vise as shown in the figure.

CAUTION:

●

Secure with chamfered pin insert hole on the cylinder
body facing upward.

●

When securing in the vise, use copper plates or cloth to
protect the flange.

6.

Install reservoir tank to the cylinder body. Tilt reservoir tank as
shown in the figure and insert mounting pin. When mounting pin
passes through pinhole in the master cylinder, return reservoir
tank to the upright position. Push mounting pin all the way
through the opposite pinhole in the reservoir tank.

SFIA0248E

BRA0519D

BRA0535D

MFIA0002E

BR-18

BRAKE MASTER CYLINDER

CAUTION:

●

Do not reuse reservoir tank mounting pin.

●

Do not reuse reservoir tank.

●

Be sure to insert pin from the chamfered pinhole on the cylinder body.

Models with ESP/TCS/ABS

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:

●

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.

Align the slit in the center of the piston with the axial direction of
the valve stopper to assemble. Visually check the secondary
piston slit from the valve stopper mounting hole, and install the
valve stopper.

CAUTION:

Always replace the piston pin O-ring with new one in the
repair kit.

4.

Insert the plate and the guide into the cylinder body.

CAUTION:

●

Be careful not to damage the rod of the primary piston.

●

Pay attention to the orientation of the guide.

●

Do not drop the O-ring.

5.

Be careful not to damage the rod of the primary piston with cov-
ering the close. Then insert snap ring to cylinder with pushing
primary piston.

CAUTION:

●

Be careful to check the snap ring in the inner tip of the
cylinder body.

●

Don not reuse snap ring.

6.

Apply brake fluid to a grommet, and press it into the master cylinder to install.

CAUTION:

Do not reuse the grommet.

SBR089C

BRA0560D

SFIA1104E

BRA0561D