check oil NISSAN PATROL 1998 Y61 / 5.G Steering System Workshop Manual

STEERING SYSTEM
SECTION
ST
CONTENTS
PRECAUTIONS AND PREPARATION............................1
Supplemental Restraint System (SRS) ``AIR
BAG'' and ``SEAT BELT PRE-TENSIONER''...............1
Precautions for Steering System .................................1
Special Service Tools ..................................................1
NOISE, VIBRATION AND HARSHNESS (NVH)
TROUBLESHOOTING.....................................................3
NVH Troubleshooting Chart.........................................3
ON-VEHICLE SERVICE..................................................4
Checking Steering Wheel Play ....................................4
Checking Neutral Position on Steering Wheel ............4
Front Wheel Turning Angle ..........................................4
Checking and Adjusting Drive Belts ............................5
Checking Fluid Level ...................................................5
Checking Fluid Leakage ..............................................5
Bleeding Hydraulic System..........................................6
Checking Steering Wheel Turning Force ....................6
Checking Hydraulic System.........................................6
STEERING WHEEL AND STEERING COLUMN............8
Removal and Installation .............................................8
Disassembly and Assembly .......................................10Inspection................................................................... 11
POWER STEERING SYSTEM (Model: PB69K)..........12
Description .................................................................12
POWER STEERING GEAR (Model: PB69K)...............13
Removal and Installation ...........................................13
Inspection...................................................................13
POWER STEERING OIL PUMP....................................15
Removal and Installation ...........................................15
Disassembly and Assembly .......................................16
Pre-disassembly Inspection .......................................16
Inspection...................................................................17
Disassembly...............................................................17
Assembly ...................................................................18
STEERING LINKAGE....................................................19
Removal and Installation ...........................................19
Disassembly...............................................................20
Inspection...................................................................20
SERVICE DATA AND SPECIFICATIONS (SDS)..........22
General Speci®cations ...............................................22
Inspection and Adjustment ........................................22
ST

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

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