1998 NISSAN PICK-UP Repair Manual

6. Check wheel bearing preload.
a. Turn bearing cage (with respect to axle shaft) two or three
times. It must turn smoothly.
b. Attach spring gauge to bearing cage bolt (as shown at left)
and pull it at a speed of 10 rpm to measure preload.
Spring gauge indication:
6.9 - 48.1 N (0.7 - 4.9 kg, 1.5 - 10.8 lb)
7. Install new oil seal to rear axle housing using a suitable tool.
After installing new oil seal, coat sealing lip with multi-pur-
pose grease.
8. Install new O-ring to rear axle housing.
9. Press ABS sensor rotor onto axle shaft until it contacts wheel
bearing lock nut.
10. Position axle shafts in rear axle housing with Tool as a guide.
Be careful not to damage oil seal.
11. Check axial end play.
a. Check that wheel bearings operate smoothly.
b. Check axial end play.
Axial end play:
0mm(0in)
SRA763A
SRA803A
SRA802A
SRA012-A
SRA006-A
REAR AXLE
Installation Ð 4WD models with ABS Ð
(Cont'd)
RA-11

2WD
4WD
SRA593CA
SRA804AA
REAR SUSPENSION
RA-12

Shock Absorber
REMOVAL AND INSTALLATION
lRemove shock absorber by disconnecting upper and lower
end.
INSPECTION
lIf oil leakage, cracks or deformation occurs, replace shock
absorber assembly.
lIf rubber bushings are cracked or deformed, replace rubber
bushings.
Leaf Spring
REMOVAL AND INSTALLATION
1. Disconnect shock absorber lower end, and remove U-bolts.
2. Disconnect spring shackle.
SRA701
SRA702
SRA704
REAR SUSPENSION
RA-13

3. Disconnect front pin.
INSPECTION
lCheck leaf spring for cracks. Replace if necessary.
lCheck front bracket and pin, shackle, U-bolts and spring pad
for wear, cracks, straightness or damaged threads. Replace
if necessary.
lCheck all bushings for deformation or cracks. Replace if nec-
essary.
[4WD models for Australia and Europe: Rear spring front
bushing]
Make sure that front bushing is properly installed.
INSTALLATION
1. Apply soapsuds to rubber bushing.
2. Install spring shackle and front pin, and finger tighten the
nuts.
3. Install spring pad and nuts under leaf spring or axle case.
4. Tighten U-bolt mounting nuts diagonally.
Tighten U-bolts so that the lengths of all U-bolts under
spring pad are the same.
5. Install shock absorber, and finger tighten the nuts.
6. Remove stands and bounce the vehicle to stabilize suspen-
sion. (Unladen)
7. Tighten spring shackle nuts, front pin nuts and shock
absorber nuts.
When installing rubber parts, final tightening must be car-
ried out under unladen condition* with tires on the ground.
* Fuel, radiator coolant and engine oil full. Spare tire, jack,
hand tools and mats in designated positions.
SRA705
SRA535AB
.
SRA727
SRA703
SRA754
REAR SUSPENSION
Leaf Spring (Cont'd)
RA-14

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