NISSAN PATROL 2006 Service Manual

Description
CAUTION:
+Parts which can be disassembled are strictly limited. Never
disassemble parts other than those speci®ed.
+Disassemble in as clean a place as possible.
+Clean your hands before disassembly.
+Do not use rags; use nylon cloths or paper towels.
+Follow the procedures and cautions indicated in the Ser-
vice Manual.
SST762C
POWER STEERING SYSTEM (Model: PB69K)
ST-12

Removal and Installation
Before removal, clean gear housing and oil pump exteriors
using a steam cleaner. Then dry with compressed air.
+Plug openings of gear housing, and securely locate hose con-
nectors at a position higher than oil pump and cover with paper
towels.
+Be extremely careful to prevent entry of foreign matter into
hoses through connectors.
+When installing pitman arm, align four grooves of pitman arm
serrations with four projections of sector shaft serrations, and
install and tighten lock washer and nut.
Inspection
Do not disassemble for power steering gear assembly.
TURNING TORQUE MEASUREMENT
1. Measure turning torque at 360É position.
a. Install steering gear on Tool.
SST774C
SST040-A
POWER STEERING GEAR (Model: PB69K)
ST-13

b. Turn stub shaft all the way to right and left several times.
c. Measure turning torque at 360É position from straight-ahead
position with Tools.
Turning torque at 360É
0.15 - 0.78 Nzm (1.5 - 8.0 kg-cm, 1.3 - 6.9 in-lb)
2. Measure turning torque at straight-ahead position.
Straight-ahead position is a position where stub shaft is
turned 2.14 turns (two full turns and 50É) from lock position.
Turning torque at straight-ahead position:
0.2 - 0.5 Nzm (2 - 5 kg-cm, 1.7 - 4.3 in-lb)
higher than turning torque at 360É
Maximum turning torque:
0.44 - 1.18 Nzm (4.5 - 12 kg-cm, 3.9 - 10.4 in-lb)
3. Check sector shaft end play in neutral position.
End play:
Less than 0.1 mm (0.004 in)
If turning torque and end play are not within speci®cations,
replace power steering gear assembly.
SST652AA
POWER STEERING GEAR (Model: PB69K)
Inspection (Cont'd)
ST-14

Removal and Installation
YST001
POWER STEERING OIL PUMP
ST-15

Disassembly and Assembly
Pre-disassembly Inspection
Disassemble the power steering oil pump only if the following items
are found.
+Oil leak from any point shown in the ®gure.
+Deformed or damaged pulley.
+Poor performance.
YST002
SST984A
POWER STEERING OIL PUMP
ST-16

Inspection
PULLEY AND PULLEY SHAFT
+If pulley is cracked or deformed, replace it.
+If ¯uid leak is found around the pulley shaft, replace the oil seal.
Disassembly
CAUTION:
+Parts which can be disassembled are strictly limited. Never
disassemble parts other than those speci®ed.
+Disassemble in as clean a place as possible.
+Clean your hands before disassembly.
+Do not use rags; use nylon cloths or paper towels.
+When disassembling and reassembling, do not let foreign
matter enter or contact the parts.
+Remove snap ring, then draw drive shaft out.
+Be careful not to drop drive shaft.
+Remove oil seal.
+Be careful not to damage front housing.
+Remove connector.
+Be careful not to drop control valve.
SST010B
SST034A
SST036AA
POWER STEERING OIL PUMP
ST-17

Assembly
Assemble oil pump, noting the following instructions.
+Make sure O-rings and oil seal are properly installed.
+Always install new O-rings and oil seal.
+Be careful of oil seal direction.
+Cam ring, rotor and vanes must be replaced as a set if neces-
sary.
+When assembling, coat each part with ATF.
+Pay attention to the direction of rotor.
+When assembling vanes to rotor, rounded surfaces of vanes
must face cam ring side.
+Insert pin
V2into pin grooveV1of front housing and front side
plate. Then install cam ring
V3as shown at left.
Cam ring:
D
1is less than D2
SST038A
SST289A
SST843A
SST497A
POWER STEERING OIL PUMP
ST-18

Removal and Installation
+Remove pitman arm with tool.
+Remove steering damper.
+Remove tie-rod and drag link with Tool.
SST766C
SST100-B
SST767C
STEERING LINKAGE
ST-19

Disassembly
TIE-ROD
When tie-rod ball joints and tie-rod bar are separated, adjust tie-rod
length correctly.
Adjustment should be done between ball stud centers.
L: Standard
1,302 mm (51.26 in)
CAUTION:
+Make sure that tie-rod ball joints are the same length as to
the left and right.
+The toe-in must be adjusted to within dimension ``L'' 5 mm
(0.20 in).
DRAG LINK
When drag link ball joints and drag link bar are separated, adjust
drag link length correctly.
Adjustment should be done between ball stud centers.
L: Standard
1,123.4 mm (44.23 in)
CAUTION:
+Make sure that drag link ball joint and adjuster are turned
to the same length.
+The neutral position must be adjusted to within dimension
``L'' 1 mm (0.04 in).
Inspection
BALL JOINT
1. Check joints for play. If ball is worn and play in axial direction
is excessive or joint is hard to swing, replace as a complete
unit.
Swinging force (Measure point: Cotter pin hole) ``A'':
4.9 - 49.0 N (0.5 - 5.0 kg, 1.1 - 11.0 lb)
Rotating torque ``B'':
0.3 - 2.9 Nzm (3 - 30 kg-cm, 2.6 - 26.0 in-lb)
Axial end play ``C'':
0mm(0in)
2. Check condition of dust cover. If it is cracked excessively,
replace as a complete unit.
CAUTION:
Be careful not to apply grease or oil to taper of joint.
SST768C
SST769C
SST827CA
STEERING LINKAGE
ST-20

TIE-ROD AND DRAG LINK
Check tie-rod and drag link for breakage, bends and cracks, and
replace with a new one if necessary.
FIXING LOCATION
+Check ®xing location (nuts and cotter pins) for looseness, play
and breakage.
+When looseness or play is found, check for wear and tapered
portion of ball joints, pitman arm and knuckle arms.
+When reassembling each joint, use new cotter pins.
STEERING DAMPER
Check for oil leakage and measure damping force. Replace if nec-
essary.
Damping force:
at 0.3 m (1.0 ft)/sec
4,443 N (453 kg, 999 lb)
... Extended direction
3,315 N (338 kg, 745 lb)
... Compressed direction
STEERING LINKAGE
Inspection (Cont'd)
ST-21