NISSAN PATROL 2006 Service Manual

Tool number
Tool nameDescription
ST29020001
Ball joint remover
NT551
Removing ball joint
a: 34 mm (1.34 in)
b: 6.5 mm (0.256 in)
c: 61.5 mm (2.421 in)
ST27091000
Pressure gauge
NT547
Measuring oil pressure
KV48102500
Pressure gauge adapter
NT542
Measuring oil pressure
ST3127S000
V1GG91030000
Torque wrench
V2HT62940000
Socket adapter
V3HT62900000
Socket adapter
NT541
Measuring turning torque
KV48100301
Strut and steering gear box
attachment
NT688
Disassembling and assembling steering gear
a: 162 mm (6.38 in)
b: 110 mm (4.33 in)
c: 190 mm (7.48 in)
d: 9 mm (0.35 in)
PRECAUTIONS AND PREPARATION
Special Service Tools (Cont'd)
ST-2

NVH Troubleshooting Chart
Use the chart below to help you ®nd the cause of the symptom. If necessary, repair or replace these parts.
Reference pageST-5
ST-6
ST-20
ST-20
ST-20
ST-5
ST-4
ST-6
Refer to MA section.
Ð
ST-11
ST-11
ST-10
ST-19
NVH in PD section
NVH in PD section
NVH in FA, RA section
NVH in FA section
NVH in FA section
NVH in FA section
NVH in BR section
Possible cause and
SUSPECTED PARTS
Fluid level
Air in hydraulic system
Tie-rod ball joint swinging force
Tie-rod ball joint rotating torque
Tie-rod ball joint end play
Steering gear ¯uid leakage
Steering wheel play
Steering wheel turning force
Drive belt looseness
Improper steering wheel or damage
Improper installation or looseness of tilt lock lever
Steering column deformation
Improper installation or looseness of steering column
Steering linkage looseness
PROPELLER SHAFT
DIFFERENTIAL
AXLE AND SUSPENSION
TIRES
ROAD WHEEL
AXLE SHAFT
BRAKES
Symptom STEERINGNoiseXXXXXXXXX XXXXXXX
Shake X X XXXXXX
VibrationXXXXXXXX
Shimmy X X X X X X X
Judder X X X X X
X: Applicable
NOISE, VIBRATION AND HARSHNESS (NVH) TROUBLESHOOTING
ST-3

Checking Steering Wheel Play
+With wheels in a straight-ahead position, check steering wheel
play.
Steering wheel play:
35 mm (1.38 in) or less
+If it is not within speci®cation, check the following for loose and
worn components.
Steering gear assembly
Steering linkage
Steering column
Front suspension and axle
Checking Neutral Position on Steering Wheel
Pre-checking
+Make sure that wheel alignment is correct.
Wheel alignment:
Refer to SDS in FA section.
+Verify that the steering gear is centered before removing the
steering wheel.
Checking
1. Check that the steering wheel is in the neutral position when
driving straight ahead.
2. If it is not in the neutral position, remove the steering wheel and
reinstall it correctly.
3. If the neutral position is between two teeth, loosen drag link lock
nuts. Adjust neutral position by turning drag link adjuster.
Front Wheel Turning Angle
1. Rotate steering wheel all the way right and left; measure turn-
ing angle.
Turning angle of full turns:
Refer to SDS in FA section.
2. If not within speci®cation, adjust using stopper bolt.
SST489B
SST490BA
SST756C
SMA127
SST773C
ON-VEHICLE SERVICE
ST-4

Checking and Adjusting Drive Belts
Refer to MA section (``Checking Drive Belts'', ``ENGINE MAINTE-
NANCE'').
Checking Fluid Level
Check ¯uid level.
Use the correct range of the dipstick depending on the ¯uid tem-
perature. Use the ``HOT'' range at 50 to 80ÉC (122 to 176ÉF), or the
``COLD'' range at 0 to 30ÉC (32 to 86ÉF).
CAUTION:
+Do not over®ll.
+Recommended ¯uid is Automatic Transmission Fluid type
DEXRON
TMIII or equivalent.
Checking Fluid Leakage
Check the lines for improper attachment and for leaks, cracks,
damage, loose connections, cha®ng and deterioration.
1. Run engine between idle speed and 1,000 rpm.
Make sure temperature of ¯uid in oil tank rises to 60 to 80ÉC
(140 to 176ÉF).
2. Turn steering wheel right-to-left several times.
3. Hold steering wheel at each ``lock'' position for ®ve seconds and
carefully check for ¯uid leakage.
CAUTION:
Do not hold the steering wheel in a locked position for more
than 15 seconds.
4. If ¯uid leakage at connectors is noticed, loosen ¯are nut and
then retighten.
Do not overtighten connector as this can damage O-ring,
washer and connector.
SST280BA
SST757C
ON-VEHICLE SERVICE
ST-5

Bleeding Hydraulic System
1. Raise front end of vehicle until wheels are clear of the ground.
2. Add ¯uid into oil tank to speci®ed level. Then, quickly turn steer-
ing wheel fully to right and left and lightly touch steering stop-
pers.
Repeat steering wheel operation until ¯uid level no longer
decreases.
3. Start engine.
Repeat step 2 above.
+Incomplete air bleeding will cause the following to occur. When
this happens, bleed air again.
a. Air bubbles in reservoir tank
b. Clicking noise in oil pump
c. Excessive buzzing in oil pump
Fluid noise may occur in the valve or oil pump. This is common
when the vehicle is stationary or while turning steering wheel
slowly. This does not affect performance or durability of the system.
Checking Steering Wheel Turning Force
1. Park vehicle on a level, dry surface and set parking brake.
2. Start engine.
3. Bring power steering ¯uid up to adequate operating tempera-
ture. [Make sure temperature of ¯uid is approximately 60 to
80ÉC (140 to 176ÉF).]
Tires need to be in¯ated to normal pressure.
4. Check steering wheel turning force when steering wheel has
been turned 360É from the neutral position.
Steering wheel turning force:
39 N (4 kg, 9 lb) or less
Checking Hydraulic System
Before starting, check belt tension, driving pulley and tire pressure.
1. Set Tool. Open shut-off valve. Then bleed air. Refer to ``Bleed-
ing Hydraulic System'', ST-6.
2. Run engine at idle speed or 1,000 rpm.
Make sure ¯uid temperature in reservoir tank rises to 60 to
80ÉC (140 to 176ÉF).
WARNING:
Warm up engine with shut-off valve fully opened. If engine is
started with shut-off valve closed, ¯uid pressure in the power
steering pump increases to maximum. This will raise ¯uid tem-
perature abnormally.
3. Check pressure with steering wheel fully turned to left and right
positions with engine idling at 1,000 rpm.
CAUTION:
Do not hold the steering wheel in a locked position for more
than 15 seconds.
Power steering pump maximum operating pressure:
8,140 - 8,728 kPa (81.4 - 87.3 bar, 83 - 89 kg/cm
2,
1,180 - 1,266 psi)
+If pressure reaches maximum operating pressure, system is
OK.
+If pressure increases above maximum operating pressure,
check power steering pump ¯ow control valve. Refer to ST-16.
SST491B
SST834-E
ON-VEHICLE SERVICE
ST-6

4. If power steering pressure is below the maximum operating
pressure, slowly close shut-off valve and check pressure again.
CAUTION:
Do not close shut-off valve for more than 15 seconds.
+If pressure increases to maximum operating pressure, gear is
damaged. Refer to ``Removal and Installation'', ST-13.
+If pressure remains below maximum operating pressure, pump
is damaged. Refer to ``Disassembly'', ST-17.
5. After checking hydraulic system, remove Tool and add ¯uid as
necessary. Then completely bleed air out of system. Refer to
ST-6.
ON-VEHICLE SERVICE
Checking Hydraulic System (Cont'd)
ST-7

Removal and Installation
V1Air bag module
V2Steering wheel
V3Spiral cable
V4Combination switch
V5Steering column assembly
V6Column cover
V7Lower shaft
V8Coupling
CAUTION:
+The rotation of the spiral cable (SRS ``Air bag'' component
part) is limited. If the steering gear must be removed, set
the front wheels in the straight-ahead direction. Do not
rotate the steering column while the steering gear is
removed.
+Remove the steering wheel before removing the steering
lower joint to avoid damaging the SRS spiral cable.
STEERING WHEEL
+Remove air bag module and spiral cable. Refer to RS section
(``Removal Ð Air Bag Module and Spiral Cable'', ``SUPPLE-
MENTAL RESTRAINT SYSTEM'').
SST758C
SBF812E
STEERING WHEEL AND STEERING COLUMN
ST-8

+Align spiral cable correctly when installing steering wheel.
a. Set the front wheels in the straight-ahead position.
b. Make sure that the spiral cable is in the neutral position.
The neutral position is detected by turning left 2.5 revolutions
from the right end position. Align the two marks (
,
m).
CAUTION:
The spiral cable may snap due to steering operation if the
cable is installed in an improper position.
Also, with the steering linkage disconnected, the cable may
snap by turning the steering wheel beyond the limited number
of turns. (The spiral cable can be turned up to 2.5 turns from
the neutral position to both the right and left.)
+Remove steering wheel with Tool.
STEERING COLUMN
+When installing steering column, ®ngertighten all lower bracket
and clamp retaining bolts; then tighten them securely. Do not
apply undue stress to steering column.
+When attaching coupling joint, be sure tightening bolt faces
cutout portion.
SRS276
SST777C
SST759C
STEERING WHEEL AND STEERING COLUMN
Removal and Installation (Cont'd)
ST-9

Disassembly and Assembly
V1Combination switch
V2Lock nut
V3Jacket tube assembly
V4Tilt lever
V5Tilt spring
V6Steering column shaft assembly
V7Band
V8Column cover
V9Coupling
+When disassembling and assembling, unlock steering lock with
key.
+Install lock nut on steering column shaft and tighten the nut to
speci®cation.
: 25-34Nzm (2.5 - 3.5 kg-m, 18 - 25 ft-lb)
+Steering lock
a. Break self-shear type screws with a drill or other appropriate
tool.
b. Install new self-shear type screws and then cut off self-shear
type screw heads.
SST760C
SST490C
SST742A
STEERING WHEEL AND STEERING COLUMN
ST-10

Inspection
+When steering wheel does not turn smoothly, check the steer-
ing column as follows and replace damaged parts.
a. Check column bearings for damage and unevenness. Lubricate
with recommended multi-purpose grease or replace steering
column as an assembly, if necessary.
b. Check steering column lower shaft for deformation and break-
age. Replace if necessary.
+When the vehicle comes into a light collision, check length ``L
1''
and ``L
2''.
Steering column length ``L
1'':
679.9 - 681.5 mm (26.77 - 26.83 in)
Steering column lower shaft length ``L
2'':
489.3 - 493.3 mm (19.26 - 19.42 in)
If out of the speci®cations, replace steering column shaft or
steering column as an assembly.
Tilt mechanism
After installing steering column, check tilt mechanism operation.
SST761C
SST582BD
STEERING WHEEL AND STEERING COLUMN
ST-11