Infiniti G37 Coupe. Manual — part 957
PARKING BRAKE SHOE
PB-9
< ON-VEHICLE REPAIR >
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PARKING BRAKE SHOE
Exploded View
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Removal and Installation
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REMOVAL
WARNING:
Clean any dust from the brake shoes and brake plates with a vacuum dust collector. Never blow with
compressed air.
1.
Remove rear tires with power tool.
2.
Remove disc rotor with parking brake completely in the released position. Refer to
PER ASSEMBLY (1 PISTON TYPE) : Exploded View"
(1 piston type),
BLY (2 PISTON TYPE) : Exploded View"
(2 piston type).
CAUTION:
• Put matching marks on the disc rotor and the wheel hub and bearing assembly when reusing the
disc rotor.
• Never drop disc rotor.
3.
If disc rotor cannot be removed, remove as follows:
a.
Fix the disc rotor with wheel nuts and remove the adjusting hole plug.
1.
Brake shoe
2.
Adjuster
3.
Adjuster spring
4.
Return spring
5.
Anti-rattle pin
6.
Retainer
7.
Anti-rattle spring
8.
Toggle lever
: Apply PBC (Poly Butyl Cuprysil) grease or silicone-based grease.
JPFIB0006ZZ
PB-10
< ON-VEHICLE REPAIR >
PARKING BRAKE SHOE
b.
Using suitable tool, rotate adjuster (1) in direction (B) to retract
and loosen brake shoe.
4.
Remove anti-rattle pins, retainers, anti-rattle springs, and return
spring, adjuster spring.
CAUTION:
Never drop the removed parts.
5.
Remove parking brake shoes, adjuster assembly, and toggle
lever.
CAUTION:
• The parking brake shoes for the front wheels are made of
different materials from those for the rear wheels. Never
misidentify them when removing.
• Never drop the removed parts.
6.
For the removal of back plate, refer to
INSTALLATION
Install in the reverse order of removal.
• Apply PBC (Poly Butyl Cuprysil) grease or silicone-based grease to the back plate and brake shoe.
CAUTION:
The parking brake shoes for the front wheels are made of different materials from those for the rear
wheels. Never misidentify them when removing and replacing.
• Assemble adjusters so that threaded part is expanded when rotat-
ing it in the direction shown by arrow.
• Shorten adjuster by rotating it.
• When disassembling after, apply PBC (Poly Butyl Cuprysil) grease
or silicone-based grease to threads.
• Check brake shoe sliding surface and drum inner surface for
grease. Wipe it off if it adhere on the surfaces.
Inspection and Adjustment
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INSPECTION AFTER REMOVAL
Lining Thickness Inspection
• Check thickness (A) of lining.
Drum Inner Diameter Inspection
JPFIB0007ZZ
A: For RH brake
B: For LH brake
: Vehicle front
: Adjuster expands
JPFIB0009ZZ
Standard
Standard thickness
: Refer to
Limit
Wear limit
: Refer to
SBR021A
PARKING BRAKE SHOE
PB-11
< ON-VEHICLE REPAIR >
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• Check inner diameter (B) of drum.
Other Inspections
• Check the lining for excessive wear, damage, and peeling. Replace if necessary.
• Check the brake shoe sliding surface for excessive wear and damage. Replace if necessary.
• Check the anti-rattle pin and retainer for excessive wear, damage and rust. Replace if necessary.
• Check the adjuster spring, return spring and anti-rattle spring for settling, excessive wear, damage, and rust.
Replace if necessary.
• Check the adjuster for smoothness. Replace if necessary.
• Check the toggle lever for excessive wear, damage and rust. Replace if necessary.
• Visually check inside of the drum for excessive wear, cracks, and damage with a pair of vernier calipers.
Replace if necessary.
ADJUSTMENT AFTER INSTALLATION
• Adjust the parking brake pedal stroke or lever stroke. Refer to
PB-3, "PEDAL TYPE : Inspection and Adjust-
(pedal type),
PB-4, "LEVER TYPE : Inspection and Adjustment"
(lever type).
• Perform break-in operation as follows after replacing brake shoe and/or disc rotor, or if brakes do not func-
tion well.
1.
Adjust parking brake pedal stroke or lever stroke to the specified amount. Refer to
(pedal type),
PB-4, "LEVER TYPE : Inspection and Adjustment"
(lever type).
2.
Perform parking brake break-in (drag on) operation by driving vehicle under the following conditions:
CAUTION:
To prevent lining from getting too hot, allow a cool off period of approximately 5 minutes after
every break-in operation.
3.
After the break-in procedure, check parking brake pedal stroke or lever stroke of parking brake. If it is out
of the specification, adjust again. Refer to
PB-3, "PEDAL TYPE : Inspection and Adjustment"
(pedal type),
PB-4, "LEVER TYPE : Inspection and Adjustment"
(lever type).
Standard
Standard inner diameter
: Refer to
Limit
Wear limit of inner diame-
ter
: Refer to
JPFIB0008ZZ
Drive forward
· Vehicle speed
: Approx. 30 km/h (19 MPH) set (constant and forward)
· Parking brake operating force
: Approx. 294 N (30 kg, 66 lb) set constant
· time
: Approx. 35 sec.
PB-12
< SERVICE DATA AND SPECIFICATIONS (SDS)
SERVICE DATA AND SPECIFICATIONS (SDS)
SERVICE DATA AND SPECIFICATIONS (SDS)
SERVICE DATA AND SPECIFICATIONS (SDS)
Parking Drum Brake
INFOID:0000000001647911
Unit: mm (in)
Parking Brake Control
INFOID:0000000001647912
Brake lining
Standard thickness
3.2 (0.126)
Wear limit
1.5 (0.059)
Drum (disc)
Standard inner diameter
172 (6.77) dia.
Wear limit of inner diameter
173 (6.81) dia.
Control type
Pedal type
Lever type
Number of notches [under force of 196 N (20 kg, 44 lb)]
2 – 3 notches
7
−
8 notches
Number of notches when parking brake warning lamp turns ON
1 notch
1 notch
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