wheel alignment NISSAN PICK-UP 1998 Repair Manual

lAll dimensions indicated in figures are actual ones.
lWhen using a tracking gauge, adjust both pointers to equal length. Make sure there is no free play.
lWhen a measuring tape is used, check to be sure there is no elongation, twisting or bending.
lMeasurements should be taken at the center of the mounting holes.
lAll measurements and mounting hole diameters are expressed in millimeters (mm).
lAn asterisk (*) following the value at the measuring point indicates that the measuring point on the other
side is symmetrically the same value.
lThe coordinates of the measurement points are the distances measured from the respective dimension
lines in the directions of ``x'', ``y'' and ``z''.
Dimension lines: ``x'' line Ð Center line of vehicle
``y'' line Ð Center line of front axle (Any measurement point in front of the dimension
line refers to a minus ``Ð'' value.)
``z'' line Ð Datum line (Any measurement point under the dimension line refers to a
minus ``Ð'' value.)
2W.SB: Short wheelbase (2WD)
2W.LB
: Long wheelbase (2WD)
4W.LB
: Long wheelbase (4WD)
BODY ALIGNMENT
BT-43

Underbody
MEASUREMENT
2WD (Short wheelbase) models
SBT461
BODY ALIGNMENT
BT-46

MEASUREMENT POINTS
2WD (Short wheelbase) models
SBT462
BODY ALIGNMENT
Underbody (Cont'd)
BT-47

MEASUREMENT
2WDz4WD (Long wheelbase) models
SBT463
BODY ALIGNMENT
Underbody (Cont'd)
BT-48

MEASUREMENT POINTS
2WD4WD (Long wheelbase) models
SBT464
BODY ALIGNMENT
Underbody (Cont'd)
BT-49

FRONT AXLE &
FRONT SUSPENSION
SECTION
FA
CONTENTS
PRECAUTIONS AND PREPARATION..................... 1
Precautions ............................................................ 1
Special Service Tools ............................................ 1
Commercial Service Tools ..................................... 2
FRONT AXLE AND FRONT SUSPENSION............. 3
ON-VEHICLE SERVICE............................................ 5
Front Axle and Front Suspension Parts ................ 5
Front Wheel Bearing .............................................. 5
Front Wheel Alignment .......................................... 7
Drive Shaft ........................................................... 11
FRONT AXLE.......................................................... 12
Manual-lock Free-running Hub - 4WD - .............. 14
Auto-lock Free-running Hub - 4WD -................... 15
Removal ............................................................... 15
Installation ............................................................ 15Wheel Hub and Rotor Disc .................................. 16
Knuckle Spindle ................................................... 18
Drive Shaft - 4WD - ............................................. 21
FRONT SUSPENSION............................................ 26
Shock Absorber ................................................... 28
Torsion Bar Spring ............................................... 28
Stabilizer Bar........................................................ 31
Upper Link............................................................ 31
Tension Rod......................................................... 33
Lower Link............................................................ 33
Upper Ball Joint and Lower Ball Joint ................. 34
SERVICE DATA AND SPECIFICATIONS (SDS)... 35
General Specifications ......................................... 35
Inspection and Adjustment .................................. 35
FA

Precautions
lWhen installing rubber parts, final tightening must be
carried out under unladen condition* with tires on
ground.
* Fuel, radiator coolant and engine oil full. Spare tire,
jack, hand tools and mats in designated positions.
lUse flare nut wrench when removing or installing brake
tubes.
lAfter installing removed suspension parts, check wheel
alignment and adjust if necessary.
lAlways torque brake lines when installing.
Special Service Tools
Tool number
Tool nameDescriptionUnit application
2WD 4WD
ST29020001
Gear arm puller
NT694
Removing ball joint for
knuckle spindle
XX
a: 34 mm (1.34 in)
b: 6.5 mm (0.256 in)
c: 61.5 mm (2.421 in)
HT72520000
Ball joint remover
NT546
Removing tie-rod outer end
XX
a: 33 mm (1.30 in)
b: 50 mm (1.97 in)
r: R11.5 mm (0.45 in)
KV401021S0
Bearing race drift
NT153
Installing wheel bearing
outer race
XX
KV40105400
Wheel bearing
lock nut wrench
NT154
Removing or installing wheel
bearing lock nut
ÐX
GG94310000
Flare nut torque wrench
NT406
Removing and installing
brake piping
XX
a: 10 mm (0.39 in)
SBR820BA
PRECAUTIONS AND PREPARATION
FA-1

7. Turn wheel hub several times in both directions.
8. Retighten wheel bearing lock nut with Tool.
: 0.5 - 1.5 N´m (0.05 - 0.15 kg-m, 4.3 - 13.0 in-lb)
9. Measure wheel bearing axial end play.
Axial end play: 0 mm (0 in)
10. Measure starting force ``A'' at wheel hub bolt.
11. Install lock washer by tightening the lock nut within 15 to 30
degrees.
12. Turn wheel hub several times in both directions to seat wheel
bearing correctly.
13. Measure starting force ``B'' at wheel hub bolt. Refer to step
10.
14. Wheel bearing preload ``C'' can be calculated as shown
below.
C=BþA
Wheel bearing preload ``C'':
7.06 - 20.99 N (0.72 - 2.14 kg, 1.59 - 4.72 lb)
15. Repeat steps 3 through 14 until correct axial end play and
wheel bearing preload are obtained.
16. Install free-running hub.
Front Wheel Alignment
Before checking front wheel alignment, make a preliminary
inspection (Unladen*).
*: Fuel, radiator coolant and engine oil full. Spare tire, jack,
hand tools and mats in designated positions.
PRELIMINARY INSPECTION
1. Check tires for wear and proper inflation.
2. Check outside and inside wheel runout.
Wheel runout average
[(Outside runout value + Inside runout value) x 0.5]:
Refer to SDS, FA-35.
3. Check front wheel bearings for looseness.
4. Check front suspension for looseness.
5. Check steering linkage for looseness.
6. Check that front shock absorbers work properly by using the
standard bounce test.
SFA845B
SMA580A
SFA830
SFA356B
ON-VEHICLE SERVICE
Front Wheel Bearing (Cont'd)
FA-7

7. Measure vehicle height (Unladen):H=AþBmm(in)
Refer to SDS, FA-36.
a. Exercise the front suspension by bouncing the front of the
vehicle 4 or 5 times to ensure that the vehicle is in a neutral
height attitude.
b. Measure wheel alignment.
Refer to SDS, FA-36.
c. If wheel alignment is not as specified, adjust vehicle posture.
Refer to SDS, FA-36.
d. Adjust wheel alignment.
Refer to SDS, FA-36.
CAMBER, CASTER AND KINGPIN INCLINATION
Before checking camber, caster or kingpin inclination, move
vehicle up and down on turning radius gauge to minimize
friction. Ensure that the vehicle is in correct posture.
lMeasure camber, caster and kingpin inclination of both right
and left wheels with a suitable alignment gauge and adjust
in accordance with the following procedures.
Camber, Caster and Kingpin inclination:
Refer to SDS, FA-36.
lIn the following two cases, temporarily tighten the adjusting
bolts while aligning the matching marks with the slits as
shown in the figure at the left and measure the camber,
caster and kingpin inclination:
(1) When replacing the upper link or other suspension parts
with new ones
(2) When matching marks were not painted on adjusting
bolts before suspension disassembly procedures
lIf matching marks were already painted during suspension
disassembly, align the matching marks with the slits, then
temporarily tighten the adjusting bolts. Measure the camber,
caster and kingpin inclination.
SFA815B
SFA816B
SFA894
SFA817B
ON-VEHICLE SERVICE
Front Wheel Alignment (Cont'd)
FA-8

ADJUSTMENT
1.Both camber and caster angles are adjusted by adjusting bolts.
lIf the kingpin inclination is outside specifications, check the
front suspension parts for wear or damage. Replace faulty
parts with new ones.
2. From the measured value, read the coordinate (or: gradua-
tion) at the intersecting point in the graph.
a. If the coordinate (or: graduation) at the intersecting point is
positive, move the pin outward by turning the corresponding
adjusting bolt by the indicated graduation.
b. If the coordinate (or: graduation) at the intersecting point is
negative, move the pin inward by turning the corresponding
adjusting bolt by the indicated graduation.
After properly moving the pin(s), tighten the front and rear
adjusting bolts to specifications.
3. Re-measure to ensure that the camber and caster are within
specified tolerances.
[Example]
a. Measured values corresponding with the two values indi-
cated below: (See chart for 4WD model.)
Camber angle: þ0É06¢(þ0.10É)
Caster angle: 2É10¢(2.17É)
b.
Apply the above two values to the graph and determine point ``A''.
c.The coordinate (or: graduation) indicates that both the front and
rear adjusting bolts must be turned outward by 3 graduations.
Turn the adjusting bolts by the amount corresponding with the 3
graduations.
SFA817B
SFA910B
ON-VEHICLE SERVICE
Front Wheel Alignment (Cont'd)
FA-9