Infiniti I30 (A33). Manual — part 110
SBR225B
Removal and Installation
NHBR0027
CAUTION:
When installing vacuum hoses, pay attention to the following
points.
I
Do not apply any oil or lubricants to vacuum hose and
check valve.
I
Insert vacuum tube into vacuum hose as shown.
I
Install check valve, paying attention to its direction.
Inspection
NHBR0028
HOSES AND CONNECTORS
NHBR0028S01
Check vacuum lines, connections and check valve for airtightness,
improper attachment chafing and deterioration.
SBR844B
CHECK VALVE
NHBR0028S02
Check vacuum with a vacuum pump.
Connect to booster side
Vacuum should exist.
Connect to engine side
Vacuum should not exist.
GI
MA
EM
LC
EC
FE
AT
AX
SU
ST
RS
BT
HA
SC
EL
IDX
VACUUM HOSE
Removal and Installation
BR-23
Component
NHBR0030
SBR527EA
1.
Main pin
2.
Pin boot
3.
Torque member fixing bolt
4.
Torque member
5.
Shim cover
6.
Inner shim
7.
Inner pad
8.
Pad retainer
9.
Outer pad
10. Outer shim
11. Shim cover
12. Connecting bolt
13. Copper washer
14. Main pin bolt
15. Bleed valve
16. Cylinder body
17. Piston seal
18. Piston
19. Piston boot
Pad Replacement
NHBR0029
WARNING:
Clean brake pads with a vacuum dust collector to minimize the
hazard of airborne particles or other materials.
CAUTION:
I
When cylinder body is open, do not depress brake pedal
because piston will pop out.
I
Be careful not to damage piston boot or get oil on rotor.
Always replace shims when replacing pads.
I
If shims are rusted or show peeling of the rubber coat,
replace them with new shims.
I
It is not necessary to remove connecting bolt except for
disassembly or replacement of caliper assembly. In this
case, suspend cylinder body with wire so as not to stretch
brake hose.
I
Burnish the brake contact surfaces after refinishing or
replacing drums or rotors, after replacing pads or linings,
or if a soft pedal occurs at very low mileage.
Refer to “Brake Burnishing Procedure”, “ON-VEHICLE
SERVICE”, BR-8.
FRONT DISC BRAKE
Component
BR-24
SBR976B
SBR932C
1.
Remove master cylinder reservoir cap.
2.
Remove pin bolt.
3.
Open cylinder body upward. Then remove pad with retainers,
inner and outer shims.
Standard pad thickness:
11 mm (0.43 in)
Pad wear limit:
2.0 mm (0.079 in)
Carefully monitor brake fluid level because brake fluid will
return to reservoir when pushing back piston.
SBR979B
Removal
NHBR0031
WARNING:
Clean brake pads with a vacuum dust collector to minimize the
hazard of airborne particles or other materials.
Remove torque member fixing bolts and connecting bolt.
It is not necessary to remove connecting bolt except for dis-
assembly or replacement of caliper assembly. In this case,
suspend caliper assembly with wire so as not to stretch brake
hose.
SBR772
Disassembly
NHBR0032
WARNING:
Do not place your fingers in front of piston.
CAUTION:
Do not scratch or score cylinder wall.
1.
Push out piston with piston boot with compressed air.
2.
Remove piston seal with a suitable tool.
SBR556E
CAUTION:
When removing the pad retainer from the torque member, lift
it up and out in the direction of the arrows in the figure.
GI
MA
EM
LC
EC
FE
AT
AX
SU
ST
RS
BT
HA
SC
EL
IDX
FRONT DISC BRAKE
Pad Replacement (Cont’d)
BR-25
Inspection
NHBR0033
CALIPER
NHBR0033S01
Cylinder Body
NHBR0033S0101
I
Check inside surface of cylinder for score, rust, wear, damage
or presence of foreign materials. If any of the above conditions
are observed, replace cylinder body.
I
Minor damage from rust or foreign materials may be eliminated
by polishing surface with a fine emery paper. Replace cylinder
body if necessary.
CAUTION:
Use brake fluid to clean. Never use mineral oil.
Piston
NHBR0033S0102
CAUTION:
Piston sliding surface is plated. Do not polish with emery
paper even if rust or foreign materials are stuck to sliding
surface.
Check piston for score, rust, wear, damage or presence of foreign
materials. Replace if any of the above conditions are observed.
Slide Pin, Pin Bolt and Pin Boot
NHBR0033S0103
Check for wear, cracks or other damage. Replace if any of the
above conditions are observed.
ROTOR
NHBR0033S02
Rubbing Surface
NHBR0033S0201
Check rotor for roughness, cracks or chips.
SBR219C
Runout
NHBR0033S0202
1.
Secure rotor to wheel hub with at least two nuts (M12 x 1.25).
2.
Check runout using a dial indicator.
Make sure that wheel bearing axial end play is within the
specifications before measuring. Refer to AX section
(“Front Wheel Bearing”, “ON-VEHICLE SERVICE”).
Maximum runout:
0.07 mm (0.0028 in)
3.
If the runout is out of specification, find minimum runout posi-
tion as follows:
a.
Remove nuts and rotor from wheel hub.
b.
Shift the rotor one hole and secure rotor to wheel hub with
nuts.
c.
Measure runout.
d.
Repeat steps a. to c. so that minimum runout position can be
found.
4.
If the runout is still out of specification, turn rotor with on-car
brake lathe (“MAD, DL-8700”, “AMMCO 700 and 705” or
equivalent).
FRONT DISC BRAKE
Inspection
BR-26
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