1998 NISSAN PICK-UP Repair Manual

Tool number
Tool nameDescriptionUnit application
Manual
steeringPower
steering
KV48100301
Strut & steering gearbox
attachment
NT688
Steering gear is installed.
XX
a: 162 mm (6.38 in)
b: 110 mm (4.33 in)
c: 190 mm (7.48 in)
d: 9 mm (0.35 in)
KV48103500
Pressure gauge
NT547
Measuring oil pressure
ÐX
KV48102500
Pressure gauge adapter
NT542
Measuring oil pressure
(Use with KV48103500)
ÐX
KV481009S0
Oil seal drift set
V1KV48100910
Drift
V2KV48100920
Adapter
V3KV48100930
Adapter
NT174
Installing oil seal
ÐX
KV48100700
Torque adapter
NT169
Adjusting worm bearing pre-
load
XX
PRECAUTIONS AND PREPARATION
Special Service Tools (Cont'd)
ST-3

Steering System
Checking and Adjusting Drive Belts (For
power steering)
Refer to MA section (``Checking Drive Belts'', ``ENGINE MAIN-
TENANCE'').
Checking Fluid Level (For power steering)
Check fluid level with engine off.
Check fluid level with dipstick on reservoir cap.
Use ``HOT'' range for fluid temperatures of 50 to 80ÉC (122 to
176ÉF). Use ``COLD'' range for fluid temperatures of 0 to 30ÉC
(32 to 86ÉF).
CAUTION:
lDo not overfill.
lRecommended fluid is Automatic Transmission Fluid
type ``DEXRONTMII E, DEXRONTMIII'', or equivalent.
SST720C
SST280B
ON-VEHICLE SERVICE
ST-4

Checking Fluid Leakage (For power steering)
Check lines for improper attachment, leaks, cracks, damage,
chafing or deterioration.
1. Run engine between idle speed and 1,000 rpm.
lMake sure temperature of fluid in reservoir 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 five seconds
and carefully check for fluid leakage.
CAUTION:
Do not hold steering wheel at lock position for more than 15
seconds.
4. If fluid leakage from any line is noticed, loosen flare nut and
then retighten.
Do not overtighten connector as this can damage O-ring,
washer and connector.
5. If fluid leakage from power steering pump is noticed, check
power steering pump. Refer to ST-34.
6. If fluid leakage from power steering gear is noticed, check
power steering gear. Refer to ST-19 (PB48S), or ST-27
(PB59K).
Bleeding Hydraulic System (For power
steering)
1. Raise front end of vehicle until wheels are clear of the
ground.
2. Add fluid to reservoir tank to specified level. Then quickly turn
steering wheel fully to right and left and lightly touch steer-
ing stoppers.
Repeat steering wheel operation until fluid level no longer
decreases.
3. Start engine.
Repeat step 2 above.
lIncomplete air bleeding will cause the following to occur:
a. Air bubbles in reservoir tank
b. Clicking noise in power steering pump
c. Excessive buzzing in power steering pump
When this happens, bleed air again.
Fluid noise may occur in the valve or power steering pump. This
is common when the vehicle is stationary or while turning the
steering wheel slowly. This does not affect the performance or
durability of the system.
SST621A
ON-VEHICLE SERVICE
ST-5

Checking Steering Wheel Turning Force (For
power steering)
1. Park vehicle on a level, dry surface and set parking brake.
2. Start engine and run at idle speed or 1,000 rpm.
3. Bring power steering fluid up to adequate operating tempera-
ture. [Make sure temperature of fluid is approximately 60 to
80ÉC (140 to 176ÉF).]
Tires need to be inflated to normal pressure.
4. Check steering wheel turning force when steering wheel has
been turned 360É from neutral position.
Steering wheel turning force:
PB48S-type
24.5 - 29.4 N (2.5 - 3.0 kg, 5.5 - 6.6 lb)
PB59K-type
39 N (4 kg, 9 lb) or less
5. If steering wheel turning force is out of specification, check
the following:
a. Hydraulic system. Refer to ``Checking Hydraulic System'',
ST-7.
b. Steering Column. Refer to ST-10.
c. Front suspension and axle. Refer to FA section (``Front Axle
and Front Suspension Parts'', ``ON-VEHICLE SERVICE'').
d. Steering gear turning torque. Refer to ``TURNING TORQUE
MEASUREMENT'', ST-19 (PB48S), or ST-27 (PB59K).
Checking Steering Wheel Play
lPlace wheels in a straight ahead position and check steer-
ing wheel play.
Steering wheel play:
35 mm (1.38 in) or less
lIf it is not within specification, check the following for loose
or worn components.
a. Steering column. Refer to ST-10.
b. Front suspension and axle. Refer to FA section (``Front Axle
and Front Suspension Parts'', ``ON-VEHICLE SERVICE'').
c. Steering gear. [Refer to ST-13 (manual steering),ST-19
(power steering PB48S), or ST-27 (power steering PB59K).]
SST491B
SST489B
ON-VEHICLE SERVICE
ST-6

Checking Neutral Position on Steering Wheel
lMake sure that wheel alignment is correct.
Wheel alignment:
Refer to FA section (``Inspection and Adjustment'',
``SERVICE DATA AND SPECIFICATIONS'').
lVerify 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 still not correct:
a. Loosen tie-rod lock nuts.
b. Move tie-rods, in opposite direction, the same amount on
both left and right sides.
This will compensate for error in the neutral position.
Checking Front Wheel Turning Angle
1. Rotate steering wheel fully right, then left; measure turning
angle.
Turning angle of full turns:
Refer to FA section (``Inspection and Adjustment'',
``SERVICE DATA AND SPECIFICATIONS'').
2. If it is not within specification, check stopper bolt adjustment.
Refer to FA section (``FRONT WHEEL TURNING ANGLE'',
``Front Wheel Alignment'').
Checking Hydraulic System (For power
steering)
Before starting, check belt tension, driving pulley and tire pressure.
1. Set Tool. Open shut-off valve. Then bleed air. Refer to
``Bleeding Hydraulic System'', ST-5.
2. Run engine at idle speed or 1,000 rpm.
lMake sure temperature of fluid 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, fluid pressure in power
steering pump increases to maximum. This will raise fluid
temperature abnormally.
3. Check pressure with steering wheel fully turned to left and
right positions while idling at 1,000 rpm.
CAUTION:
Do not hold the steering wheel at full lock position for more
than 15 seconds.
Oil pump maximum pressure:
7,649 - 8,238 kPa (76.5 - 82.4 bar, 78 - 84 kg/cm
2,
1,109 - 1,194 psi) at idling
SST490BA
SMA127
SST731C
ON-VEHICLE SERVICE
ST-7

4. If power steering pressure is below standard pressure, slowly
close shut-off valve and check pressure.
CAUTION:
Do not close shut-off valve for more than 15 seconds.
lWhen pressure reaches maximum pressure, gear is dam-
aged. Check power steering gear. Refer to ST-19 (PB48S),
or ST-27 (PB59K).
lWhen pressure remains below standard pressure, pump is
damaged. Check power steering pump. Refer to ST-34.
5. If power steering pressure is higher than standard pressure,
power steering pump flow control valve is damaged. Check
power steering pump. Refer to ST-34.
6. After checking hydraulic system, remove Tool and add fluid
as necessary. Then completely bleed air out of system. Refer
to ST-5.
ON-VEHICLE SERVICE
Checking Hydraulic System (For power
steering) (Cont'd)
ST-8

Steering Wheel
REMOVAL AND INSTALLATION
1. Remove air bag module and spiral cable. Refer to RS sec-
tion [``Air Bag Module and Spiral Cable'', ``SUPPLEMENTAL
RESTRAINT SYSTEM (SRS)'']. (With air bag)
Remove horn pad. (Without air bag)
2. Disconnect horn connector and remove steering wheel nut.
SST721C
SBF812EC
SST730C
STEERING WHEEL AND STEERING COLUMN
ST-9

3. Remove steering wheel using Tool.
lFor installation, refer to RS section [``Air Bag Module and
Spiral Cable'', ``SUPPLEMENTAL RESTRAINT SYSTEM
(SRS)''].
Steering Column
REMOVAL
CAUTION:
lThe rotation of the spiral cable (SRS ``Air bag'' compo-
nent 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.
lRemove the steering wheel before removing the steering
lower joint to avoid damaging the SRS spiral cable. Refer
to ST-9.
1. Remove steering wheel, refer to ST-9.
2. Remove steering column cover.
3. Remove instrument lower panel.
4. Disconnect combination switch electrical connectors and air
bag harness connector.
5. Remove dash insulator.
6. Remove bolt from lower joint.
7. Remove two steering column bolts and remove steering col-
umn.
INSTALLATION
lWhen installing steering column, finger-tighten all lower
bracket and clamp retaining bolts; then tighten them
securely. Make sure that undue stress is not applied to steer-
ing column.
lWhen fitting steering lower joint, be sure tightening bolt faces
cutout portion.
lAlign spiral cable correctly when installing steering wheel.
Refer to RS section [``Air Bag Module and Spiral Cable'',
``SUPPLEMENTAL RESTRAINT SYSTEM (SRS)''].
CAUTION:
After installation, turn steering wheel to make sure it moves
smoothly. Ensure the number of turns from the straight for-
ward position to left and right locks are the same. Be sure
that the steering wheel is in a neutral position when driving
straight ahead.
SST515B
SST666A
STEERING WHEEL AND STEERING COLUMN
Steering Wheel (Cont'd)
ST-10