Nissan Quest E52. Instruction — part 226
BR-48
< REMOVAL AND INSTALLATION >
REAR DISC BRAKE
6.
Install tires with power tool. Refer to
WT-46, "Removal and Installation"
7.
Perform inspection after installation. Refer to
BR-50, "BRAKE CALIPER ASSEMBLY : Inspection"
.
BRAKE CALIPER ASSEMBLY : Disassembly and Assembly
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DISASSEMBLY
CAUTION:
Never drop the parts.
NOTE:
Never remove the torque member, brake pad and pad retainers when disassembling and assembling the cyl-
inder body.
1.
Remove the sliding pin bolt, and remove the cylinder body from the torque member. Refer to
"BRAKE PAD : Removal and Installation"
CAUTION:
Fix the brake pad at suitable tape so that the brake pad will not drop.
2.
Remove sliding pin boots from torque member.
3.
Remove bushing (1) from sliding pin bolt (2).
4.
Place a wooden block as shown in the figure, and blow air from
union bolt mounting hole to remove pistons and piston boots.
CAUTION:
Never get fingers caught in the pistons.
5.
Remove piston seal from cylinder body using seal pick tool.
CAUTION:
Be careful not to damage a cylinder inner wall.
6.
Remove bleeder valve and cap.
7.
Perform inspection after disassembly. Refer to
CALIPER ASSEMBLY : Inspection"
.
ASSEMBLY
CAUTION:
Never drop the parts.
1.
Install bleeder valve and cap.
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REAR DISC BRAKE
BR-49
< REMOVAL AND INSTALLATION >
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2.
Apply polyglycol ether based lubricant to piston seals (1), and
install them to cylinder body.
CAUTION:
Never reuse piston seals.
3.
Apply rubber grease to piston boots (1). Cover the piston (2) end
with piston boot, and then install cylinder side lip on piston boot
securely into a groove on cylinder body.
CAUTION:
Never reuse piston boots.
4.
Apply new brake fluid to pistons (1). Push piston into cylinder
body by hand and push piston boot (2) piston-side lip into the
piston groove.
CAUTION:
Press the pistons evenly and vary the pressing point to pre-
vent cylinder inner wall from being rubbed.
5.
Apply rubber grease to mating faces (A) between sliding pin bolt
(1) and bushing (2), and install bushing to sliding pin.
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BR-50
< REMOVAL AND INSTALLATION >
REAR DISC BRAKE
6.
Apply rubber grease to mating faces (A) between sliding pin bolt
(1) and sliding pin boot (2), and install sliding pin and sliding pin
boot to sliding torque member.
7.
Apply MOLYKOTE
®
AS880N or silicone-based grease to the
pawls part (A) of cylinder body.
Molykote is a registered trademark of Dow Corning Corporation.
8.
Install the cylinder body to tighten sliding pin bolts to the speci-
fied torque. Refer to
BR-43, "BRAKE PAD : Exploded View"
BRAKE CALIPER ASSEMBLY : Inspection
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INSPECTION AFTER DISASSEMBLY
Check the following items and replace if necessary.
Cylinder Body
Check the inner wall of the cylinder for rust, wear, cracks or damage.
CAUTION:
Always clean with new brake fluid. Never clean with mineral oil such as gasoline and light oil.
Torque Member
Check the torque member for rust, wear, cracks or damage.
Pistons
Check the surface of the piston for rust, wear, cracks or damage.
CAUTION:
A piston sliding surface is plated. Never polish with sandpaper.
Sliding Pin Bolt, Sliding Pin Boot and Bushing
Check the sliding pin bolts, sliding boots and bushing for rust, wear, cracks or damage.
INSPECTION AFTER INSTALLATION
• Check a drag of rear disc brake. If any drag is found, follow the procedure described below.
1.
Remove brake pads. Refer to
BR-43, "BRAKE PAD : Removal and Installation"
.
2.
Press the pistons. Refer to
BR-43, "BRAKE PAD : Removal and Installation"
.
3.
Install brake pads. Refer to
BR-43, "BRAKE PAD : Removal and Installation"
.
4.
Securely depress the brake pedal several times.
5.
Check a drag of rear disc brake again. If any drag is found, disassemble the cylinder body and replace if
necessary. Refer to
BR-48, "BRAKE CALIPER ASSEMBLY : Disassembly and Assembly"
.
• Burnish contact surface between disc rotor and brake pads after refinishing or replacing disc rotor or brake
pad, or if a soft pedal occurs at very low mileage. Refer to
BR-16, "DISC ROTOR : Inspection and Adjust-
.
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SERVICE DATA AND SPECIFICATIONS (SDS)
BR-51
< SERVICE DATA AND SPECIFICATIONS (SDS)
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SERVICE DATA AND SPECIFICATIONS (SDS)
SERVICE DATA AND SPECIFICATIONS (SDS)
General Specifications
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Unit: mm (in)
Brake Pedal
INFOID:0000000009651849
Unit: mm (in)
Brake Booster
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Unit: mm (in)
Front Disc Brake
INFOID:0000000009651851
Unit: mm (in)
Rear Disc Brake
INFOID:0000000009651852
Unit: mm (in)
Front brake
Cylinder bore diameter
47.62 (1.8748)
×
2
Pad length
×
width
×
thickness
132.0
×
44.5
×
10.0 (5.20
×
1.752
×
0.394)
Rotor outer diameter
×
thickness
290
×
28.0 (11.42
×
1.102)
Rear brake
Cylinder bore diameter
42.86 (1.6874)
Pad length
×
width
×
thickness
83.0
×
33.0
×
8.5 (3.268
×
1.299
×
0.335)
Rotor outer diameter
×
thickness
308
×
16.0 (12.13
×
0.630)
Master cylinder
Cylinder bore diameter
25.4 (1.0)
Control valve
Valve type
Electric brake force distribution
Brake booster
Diaphragm diameter
Primary: 228.5 (9.00)
Secondary: 203 (7.99)
Recommended brake fluid
MA-10, "Fluids and Lubricants"
.
Item
Standard
Brake pedal height
195.6 – 205.6 (7.70 – 8.09)
Depressed brake pedal height
[Depressing 490 N (50 kg, 110 lb) while turning the engine ON]
105.0 (4.13) or more
Clearance between stop lamp switch and brake switch threaded end and the stopper rubber
0.2 – 1.96 (0.008 – 0.0772)
Brake pedal play
3 – 11 (0.12 – 0.43)
Item
Standard
Input rod length
127.0 – 128.0 (5.00 – 5.04)
Item
Limit
Brake pad
Wear thickness
2.0 (0.079)
Disc rotor
Wear thickness
26.0 (1.024)
Runout (with it attached to the vehicle)
0.040 (0.0016)
Item
Limit
Brake pad
Wear thickness
2.0 (0.079)
Disc rotor
Wear thickness
14.0 (0.551)
Runout (with it attached to the vehicle)
0.050 (0.0020)
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