NISSAN PICK-UP 1998 Repair Manual

General Specifications
Suspension typeRigid axle with semi-elliptic leaf
spring
Shock absorber type Double-acting hydraulic
Inspection and Adjustment
WHEEL BEARING
Ð 2WD and 4WD models without ABS
Total end play mm (in) 0.02 - 0.15 (0.0008 - 0.0059)
Available rear axle case end
shimsThickness
mm (in)Part number
0.05 (0.0020)
0.07 (0.0028)
0.10 (0.0039)
0.15 (0.0059)
0.20 (0.0079)
0.50 (0.0197)
1.00 (0.0394)43086-P0110
43087-P0110
43088-P0110
43086-B9500
43089-P0110
43090-P0110
43036-01G00
WHEEL BEARING
Ð 4WD models with ABS
Total end play mm (in) 0 (0)
Wheel bearing preload at bearing
cage bolt N (kg, lb)6.9 - 48.1 (0.7 - 4.9, 1.5 - 10.8)
SERVICE DATA AND SPECIFICATIONS (SDS)
RA-15

STEERING SYSTEM
SECTIONST
CONTENTS
PRECAUTIONS AND PREPARATION..................... 1
Supplemental Restraint System (SRS) ``AIR
BAG'' (4WD models).............................................. 1
Supplemental Restraint System (SRS) ``AIR
BAG'' (2WD models).............................................. 1
Precautions for Steering System ........................... 1
Special Service Tools ............................................ 2
ON-VEHICLE SERVICE............................................ 4
Steering System..................................................... 4
Checking and Adjusting Drive Belts (For
power steering) ...................................................... 4
Checking Fluid Level (For power steering) ........... 4
Checking Fluid Leakage (For power steering) ...... 5
Bleeding Hydraulic System (For power
steering) ................................................................. 5
Checking Steering Wheel Turning Force (For
power steering) ...................................................... 6
Checking Steering Wheel Play .............................. 6
Checking Neutral Position on Steering Wheel ...... 7
Checking Front Wheel Turning Angle ................... 7
Checking Hydraulic System (For power
steering) ................................................................. 7
STEERING WHEEL AND STEERING COLUMN..... 9
Steering Wheel ...................................................... 9
Steering Column .................................................. 10
Disassembly and Assembly ................................. 11
Inspection ............................................................. 12
MANUAL STEERING GEAR (Model: VB66K)....... 13
Removal and Installation ..................................... 13
Disassembly ......................................................... 14
Assembly and Adjustment ................................... 14Inspection ............................................................. 17
POWER STEERING SYSTEM (Model: PB48S)..... 19
Description ........................................................... 19
POWER STEERING GEAR (Model: PB48S)......... 20
Removal and Installation ..................................... 20
Power Steering Gear Component ....................... 20
Pre-disassembly Inspection and Adjustment....... 21
Disassembly ......................................................... 22
Assembly.............................................................. 24
POWER STEERING SYSTEM (Model: PB59K).... 27
Description ........................................................... 27
POWER STEERING GEAR (Model: PB59K)......... 28
Removal and Installation ..................................... 28
Power Steering Gear Component ....................... 28
Pre-disassembly Inspection and Adjustment....... 29
Disassembly ......................................................... 30
Assembly.............................................................. 31
POWER STEERING OIL PUMP.............................. 34
Disassembly and Assembly ................................. 34
Pre-disassembly Inspection ................................. 34
Inspection ............................................................. 35
Disassembly ......................................................... 35
Assembly.............................................................. 36
STEERING LINKAGE.............................................. 37
Removal and Installation ..................................... 37
Disassembly ......................................................... 38
Inspection ............................................................. 39
SERVICE DATA AND SPECIFICATIONS (SDS)... 40
General Specifications ......................................... 40
Inspection and Adjustment .................................. 40
ST

Supplemental Restraint System (SRS) ``AIR
BAG'' (4WD models)
The Supplemental Restraint System ``Air Bag'', used along with a seat belt, helps to reduce the risk or
severity of injury to the driver in a frontal collision. The Supplemental Restraint System consists of an air
bag module (located in the center of the steering wheel), a diagnosis sensor unit, warning lamp, wiring har-
ness and spiral cable. Information necessary to service the system safely is included in theRS sectionof
this Service Manual.
WARNING:
lTo avoid rendering the SRS inoperative, which could increase the risk of personal injury or death
in the event of a collision which would result in air bag inflation, all maintenance must be per-
formed by an authorized NISSAN dealer.
lImproper maintenance, including incorrect removal and installation of the SRS, can lead to per-
sonal injury caused by unintentional activation of the system.
lDo not use electrical test equipment on any circuit related to the SRS unless instructed to in this
Service Manual. SRS wiring harnesses are covered with yellow insulation either just before the
harness connectors or for the complete harness, for easy identification.
Supplemental Restraint System (SRS) ``AIR
BAG'' (2WD models)
The Supplemental Restraint System ``Air Bag'', used along with a seat belt, helps to reduce the risk or
severity of injury to the driver in a frontal collision. The Supplemental Restraint System consists of an air
bag module (located in the center of the steering wheel), a diagnosis sensor unit, warning lamp and spiral
cable. Information necessary to service the system safely is included in theRS sectionof this Service
Manual.
WARNING:
lTo avoid rendering the SRS inoperative, which could increase the risk of personal injury or death
in the event of a collision which would result in air bag inflation, all maintenance must be per-
formed by an authorized NISSAN dealer.
lImproper maintenance, including incorrect removal and installation of the SRS, can lead to per-
sonal injury caused by unintentional activation of the system.
lDo not use electrical test equipment on any circuit related to the SRS.
Precautions for Steering System
lBefore disassembly, thoroughly clean the outside of the unit.
lDisassembly should be done in a clean work area. It is important to prevent the internal parts
from becoming contaminated by dirt or other foreign matter.
lFor easier and proper assembly, place disassembled parts in order on a parts rack.
lUse nylon cloths or paper towels to clean the parts; common shop rags can leave lint that might
interfere with their operation.
lBefore inspection or reassembly, carefully clean all parts with a general purpose, non-flammable
solvent.
lBefore assembly, apply a coat of recommended ATF* to hydraulic parts. Petroleum jelly may be
applied to O-rings and seals. Do not use any grease.
lReplace all gaskets, seals and O-rings. Avoid damaging O-rings, seals and gaskets during instal-
lation. Perform functional tests whenever designated.
*: Automatic Transmission Fluid type DEXRON
TMII E, DEXRONTMIII, or equivalent.
PRECAUTIONS AND PREPARATION
ST-1

Special Service Tools
Tool number
Tool nameDescriptionUnit application
Manual
steeringPower
steering
ST27180001
Steering wheel puller
NT544
Removing steering wheel
XX
HT72520000
Ball joint remover
NT546
Removing ball joint and
swivel joint
XX
a: 33 mm (1.30 in)
b: 50 mm (1.97 in)
r: R11.5 mm (0.453 in)
ST29020001
Steering gear arm puller
NT694
Removing pitman arm
XX
a: 34 mm (1.34 in)
b: 6.5 mm (0.256 in)
c: 61.5 mm (2.421 in)
KV48101500
Lock nut wrench
NT534
Removing and installing
lock nut
XÐ
a: 73.1 mm (2.878 in)
b: 100 mm (3.94 in)
c: 12 mm (0.47 in)
d: 60 mm (2.36 in) dia.
KV48101400
Adjusting plug wrench
NT539
Adjusting and tightening
lock nut
XÐ
a: 46.7 mm (1.839 in)
b: 8.5 mm (0.335 in) dia.
c: 7 mm (0.28 in)
ST3127S000
V1GG91030000
Torque wrench
V2HT62940000
Socket adapter
V3HT62900000
Socket adapter
NT541
Measuring turning torque
XX
PRECAUTIONS AND PREPARATION
ST-2

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