boot NISSAN X-TRAIL 2003 Service Owner's Manual

BR-32
REAR DISC BRAKE

REAR DISC BRAKEPFP:44000
ComponentEFS0017X
WARNING:

Clean dust on brake caliper and pad with a vacuum dust collector. Do not blow with compressed
air.
CAUTION:

Never depress brake pedal while removing cylinder body because piston will pop out.

Do not remove brake hose and torque member mounting bolts unless disassembling or replacing
caliper assembly. Hang the cylinder body with a wire so that the brake hose is not under tension.

Be careful not to damage piston boot. Do not allow brake fluid to get the rotor.

When replacing brake pads, always replace inner shims, outer shims, and shim covers as a set.
InspectionEFS0017Y
PAD WEAR INSPECTION
Check pad thickness by lifting vehicle, removing tyre and wheel, and
looking through check hole on cylinder body. If necessary, use a
scale.
1. Pad retainer 2. Outer shim cover 3. Outer shim
4. Outer pad 5. Pad retainer 6. Inner pad
7. Inner shim 8. Inner shim cover 9. Sliding pin boot
10. Sliding pin 11. Sliding pin bolt 12. Cylinder body
13. Copper washer 14. Brake hose 15. Union bolt
16. Copper washer 17. Bleed valve 18. Piston seal
19. Piston 20. Piston boot 21. Retaining ring
22. Torque member
SFIA2143E
standard thickness : 8.5 mm (0.335 in)
pad wear limit : 2.0 mm (0.079 in)
BRA0010D

BR-34
REAR DISC BRAKE

Caliper Removal and InstallationEFS00180
REMOVAL
1. Connect a vinyl tube to bleed valve.
2. Drain brake fluid gradually from bleed valve while depressing
brake pedal.
3. Remove union bolt and remove brake hose from caliper assem-
bly.
4. Remove union bolts and torque member mounting bolts, and
remove caliper assembly.
5. Remove disc rotor.
INSTALLATION
CAUTION:

Refill with new brake fluid “DOT 3 or DOT 4”.

Never reuse drained brake fluid.
1. Install disc rotor.
2. Install caliper assembly. Tighten mounting bolts to the specified torque.
CAUTION:
Wipe brake fluid and grease on axle assembly washer seats and caliper assembly mounting sur-
face. Install caliper assembly.
3. Connect brake hose to caliper assembly and tighten union bolts to the specified torque.
CAUTION:

Do not reuse the copper washer for union bolts.

Securely assemble brake hose to protrusions on cylinder body.
4. Bleed air. Refer to BR-9, "
Bleeding Brake System" .
Caliper Disassembly and AssemblyEFS00181
DISASSEMBLY
WARNING:
Be careful not to pinch your fingers in the piston.
CAUTION:
Be careful not to damage the cylinder inner wall.
1. Remove caliper assembly from vehicle.
2. Remove sliding pin from cylinder body. Then remove pads, shims, shim covers, and pad retainers from
caliper assembly.
3. Remove sliding pin boots from torque member.
4. Using flat-bladed screwdriver (as shown in the figure), remove
retaining ring.
SFIA0143E
SBR028A

REAR DISC BRAKE
BR-35
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5. Place a wooden block as shown in the figure. Blow air into union
bolt mounting hole to remove pistons and piston boots.
6. Using flat-bladed screwdriver, remove piston seals.
INSPECTION AFTER DISASSEMBLY
Cylinder Body
CAUTION:
Use new brake fluid to clean. Never use mineral oils such as gasoline or kerosene.

Check cylinder inner wall for corrosion, wear and damage. If corrosion, wear or damage is detected,
replace the cylinder body.

Minor flaws caused by corrosion or foreign material can be removed by polishing the surface with fine
sandpaper. Replace the cylinder body, if necessary.
To r q u e M e m b e r
Check for wear, cracks and damage. If wear, cracks or damage is detected, replace the applicable part.
Piston
CAUTION:
The piston sliding surface is plated. Do not polish with sandpaper.
Check piston surface for corrosion, wear and damage. If corrosion, wear or damage is detected, replace the
applicable part.
Sliding Pin, Pin Bolt and Pin Boot
Check sliding pin and sliding pin boot for wear, damage and cracks. If corrosion, wear or damage is detected,
replace the applicable part.
DISC ROTOR INSPECTION
Visual Inspection
Check surface of the disc rotor for uneven wear, cracks and serious damage. If uneven wear, cracks or seri-
ous damage is detected, replace it.
Run Out Inspection
1. Using wheel nuts, fix the disc rotor to wheels hub. (2 or more positions)
BRD0041D
SFIA0340E

BR-36
REAR DISC BRAKE

2. Using a dial indicator, check run out.
NOTE:
Make sure that wheel bearing axial endplay is with in the specifi-
cation before measuring runout. Refer to FA X - 7 , "
On-Vehicle
Inspection" .
3. If the run out is outside the limit, find the minimum run out point by shifting the mounting positions of disc
rotor and wheel hub by one hole.
Thickness Inspection
Using a micrometer, check thickness of disc rotor. If the thickness is
outside the standard, replace disc rotor.
ASSEMBLY
CAUTION:
When assembling, do not use rubber grease.
1. Apply rubber lubricant to piston seals, and install them to the cyl-
inder body.
CAUTION:
Do not reuse piston seals.
2. Apply brake fluid to piston boots. Cover piston end with piston
boot. Install cylinder side boot lip properly into groove on cylin-
der body.
CAUTION:
Do not reuse piston boot.
3. Press piston into cylinder body by hand. Assemble piston side
boot lip properly into groove on the piston.
CAUTION:
Press piston evenly and change pressing point to prevent
the cylinder inner wall from being rubbed.Measurement point:
At a point of 10 mm (0.39 in) from the outer
edge of the disc.
Run out limit:
0.07 mm (0.0028 in) or less
BRA0013D
Standard thickness : 16.0 mm (0.630 in)
Wear limit : 14.0 mm (0.551 in)
Maximum uneven wear (measured at 8 positions):
0.02 mm (0.0008 in) or less
SBR020B
SFIA0156E
SFIA0157E

REAR DISC BRAKE
BR-37
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4. Fix piston boot with retaining ring.
CAUTION:

Be sure boot is securely engaged in groove on cylinder
body.

Do not reuse retaining ring.
5. Install sliding pins and sliding pin boots to torque member.
6. Install torque member to axle assembly and tighten mounting
bolts to the specified torque.
CAUTION:
Wipe brake fluid and grease on axle assembly washer seats
and torque member mounting surface. Install torque member to
axle assembly.
7. Install pads, pad retainers, shims, and shim covers to torque member and assemble cylinder body.
8. Tighten sliding pin bolts to the specified torque.
9. Connect brake hose to caliper assembly and tighten union bolts to the specified torque.
CAUTION:
Do not reuse union bolt copper washer.
10. After installing caliper assembly, refill with new brake fluid and bleed air. Refer to BR-9, "
Bleeding Brake
System"
SFIA0158E

POWER STEERING GEAR AND LINKAGE
PS-13
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POWER STEERING GEAR AND LINKAGEPFP:49001
Removal and InstallationEGS0004I
REMOVAL
1. Remove cotter pin, and loosen mounting nut. Remove tie rod from steering knuckle with a pitman arm
puller.
CAUTION:

Be careful not to damage dust boot at ball joint of tie rod.

Before using pitman arm puller (multi-purpose tool), loosely tighten nut for temporary holding.
2. Mark lower joint and steering gear with paint for easy installation. Remove pinch bolt from gear side of
lower joint.
3. Remove high pressure-side tube and low pressure-side hose of hydraulic piping from steering gear.
4. Remove mounting nuts on upper portion of stabilizer connecting rod and stabilizer clamp mounting bolts.
Move stabilizer toward vehicle front.
5. Remove steering gear assembly mounting bolts and nuts. Remove power steering tube bracket and
steering gear assembly from suspension member.
6. Tilt steering gear to prevent any contact with other parts. Then remove it from right side of vehicle.
INSTALLATION
Paying attention to following items, install in the reverse order of removal.

After installation, bleed air. Refer to PS-6, "Bleeding Hydraulic System" .

Remove mounting bolt and nut from upper portion of lower joint. This will facilitate installation of lower joint
to steering gear. Then slide lower joint in place.

Check lower slit of lower joint is engaged with projection on rear
cover cap. Install pinch bolt for lower portion of lower joint.
Check steering gear is in straight-ahead position. Also check
rear cover is in position shown in figure. Then install lower joint
to steering gear.
1. Power steering gear assembly 2. Power steering tube bracket 3. Cotter pin
SGIA0009E
SGIA0105E

PS-16
POWER STEERING GEAR AND LINKAGE

Disassembly and AssemblyEGS0004K
DISASSEMBLY
1. To disassemble and assemble power steering gear, fix steering
gear mount flange in a vise with copper plates.
CAUTION:

Clean steering gear with kerosene. Be careful to avoid
splashing or applying any kerosene over connector of
discharge port or return port.

Always replace O-rings, oil seals, and copper washes
with new ones.
2. Loosen and remove adjusting screws and lock nuts.
3. Remove rear housing mounting bolts to remove gear sub
assembly.
CAUTION:
Do not disassemble rear housing and pinion gear assem-
bly.
4. Remove tie rod outer socket and boot.
5. Remove spacer ring on lock plate. Move it to rack side to expose
crimping of lock plate.
CAUTION:

Do not reuse boot, spacer ring, and lock plate.

When removing boot, do not damage boot mounting
grooves by tool. If it damaged, it may cause oil leak.
Replace tie rod inner socket and gear housing assembly.

When removing lock plate from rack, avoid damaging
surface of rack. If damaged, rack assembly must be
replaced. Otherwise, oil leaks will result.
6. Raise crimping areas (2) (A) of lock plate. Loosen inner socket
and remove from rack.
1. Gear housing assembly 2. Cylinder tube 3. Rear cover cap
4. Rear housing assembly 5. Pinion seal ring 6. Pinion assembly
7. O ring 8. Lock nut 9. Adjusting screw
10. Spring 11. Retainer 12. Center bushing
13. Rack oil seal (inner) 14. Rack oil seal (outer) 15. Spacer
16. End cover assembly 17. Boot clamp 18. Dust boot
19. Boot band 20. Rack 21. Spacer ring
22. Rack Teflon ring 23. O-ring 24. Lock plate
25. Inner socket 26. Outer socket
SGIA0056E
SGIA0018E
SGIA0019E

POWER STEERING GEAR AND LINKAGE
PS-17
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7. Drill out punch crimping area on cylinder outer rim with a 3 mm
(0.12 in) drill bit [Drill for approx. 1.5 mm (0.059 in) in depth.]
8. Remove end cover with a 36 mm (1.42 in) open head.
CAUTION:
When removing, avoid damaging surface of rack. If dam-
aged, rack assembly must be replaced. Otherwise, oil leaks
will result.
9. Pull rack assembly with rack Teflon ring out of gear housing
assembly.
CAUTION:
When pulling out rack assembly, do not damage cylinder
inner wall. If it damaged, it may cause oil leak. Replace gear
housing assembly.
10. Heat Teflon ring to approx. 40°C (104°F) with a hot air blower Remove it and O-ring from rack. Be careful
not to damage rack.
11. Use a taped 29 mm (1.14 in) socket and an extension bar. Push
out and remove center bushing and rack oil seal together from
gear housing assembly.
CAUTION:

Be careful not to damage gear housing assembly and cyl-
inder inner wall.

If damaged, gear housing assembly must be replaced.
Otherwise, oil leaks will result.
INSPECTION AFTER DISASSEMBLY
Boot
Check boot for tear, wrinkle, and deformation. Replace it, if necessary.
Rack
Check rack gear for damage and wear. Replace it, if necessary.
Gear subassembly

Check pinion gear for damage and wear, and replace if necessary.

Check bearing while rotating it. Replace bearing if bearing ball race was dent, worn, or damaged.
Gear housing cylinder
Check gear housing cylinder for damage and scratch (inner wall). Replace it, if necessary.
Tie rod ball joint
1. Swing torque.
STC0013D
SGIA0461E
SGIA0467E

PS-22
POWER STEERING GEAR AND LINKAGE

19. Use preload gauge (SST) and torque adapter (SST). Measure
pinion rotation torque within ±180° of neutral position of the gear.
Stop the gear at the point where highest torque is read.
20. Loosen adjusting screw and retighten to 4.9 - 5.9 N·m (0.50 -
0.60 kg-m, 44 - 52 in-lb), and then loosen by 60 - 80°(140-
176°F).
21. With adjusting screw held in place, tighten lock nut to 40 - 58
N·m (4.0 - 6.0 kg-m, 29 - 43 ft-lb).
22. Using a preload gauge (SST), measure rotating torque of pinion
gear. Check that reading is within range specified. If reading is
outside specification, readjust rack. If reading is still outside
specification, replace power steering gear.
23. With tie rod gear installed to gear assembly, turn pinion gear
fully to left.
24. Set dial gauge as shown in figure. Measure vertical movement
of rack when pinion is turned counterclockwise with torque of 4.9
N·m (0.5 kg-m, 43 in-lb). Check reading is within range speci-
fied. If reading is outside of specification, readjust rack. If read-
ing is still outside of specification, replace power steering gear.
25. Position boot band on large-diameter side before installing it.
26. Install small-diameter side of boot to inner socket boot mounting
groove.
27. Install boot band to small-diameter side of boot.
STC0036D
SGIA0098E
Rotational torque of pinion gear : Around neutral position [within ±11.5 mm (0.453 in)]
Average A : 1.67 - 2.25 N·m (0.17 - 0.22 kg-m, 1.3 - 1.6 ft-lb)
Maximum variation B : 0.98 N·m (0.10 kg-m, 1 ft-lb)
Other than above
Average A : 2.94 N·m (0.30 kg-m, 2 ft-lb)
Maximum variation B : 1.47 N·m (0.15 kg-m, 1 ft-lb)
Specification : 0.08 mm (0.0031 in) or less
SGIA0465E
Measuring point in shown in figure at right.Rack axle direction 5 mm (0.197 in) from housing vertical surface
Rack radial direction Direction of adjusting screw
SGIA0550E

POWER STEERING GEAR AND LINKAGE
PS-23
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28. Install boot clamp.
a. Tighten large-diameter side of RH/LH boot with boot clamp
(stainless wire).
b. Wrap clamp around boot groove for two turns. Insert screwdriv-
ers in loops on both ends of wire. Twist 4 to 4.5 turns while pull-
ing them with force of approx. 98 N (10 kg, 22.1 lb).
c. Twist boot clamp as shown. Pay attention to relationship
between winding and twisting directions.
d. Twisted point should face front of vehicle with gear installed on
vehicle (to prevent interference with other parts).
e. After twisting wire 4 to 4.5 turns, bend cut end of wire. Cut end of
wire should not touch boot. Be sure wire end is at least 5 mm
(0.20 in) away from clearance for tube.
29. Connect lock nut and outer socket to inner socket. Temporarily
tighten lock nut until length of tie rod is within specification.
CAUTION:
Perform toe-in adjustment after this procedure. Length
achieved after toe-in adjustment is not necessarily value
given here.Wire length ( ): 370 mm (14.57 in)
SST097B
SST440A
SGIA0025E
STC0124D
Tie rod length (L) : 169.67 mm (6.68 in)
STC0125D