NISSAN 300ZX 1984 Z31 Front Suspension Workshop Manual

FRONT AXLE &
FRONT SUSPENSION
SECTION FA
CONTENTS
FRONT AXLE AND FRONT SUSPENSION .. . ..
FRONT AXLE - Wheel Hub . . . . ..
FRONT SUSPENSION . . . .. .
FRONT SUSPENSION -Spring and Strut Assembly
TENSION ROD AND STABILIZER BAR
TRANSVERSE LINK AND LOWER BALL JOINT
. .
SUSPENSION CROSSMEMBER .. .
ADJUSTABLE SHOCK ABSORBER .. . . .. .
SERVICE DATA AND SPECIFICATIONS (S D S )
SPECIAL SERVICE TOOLS . .
.
..
. FA- 2
FA- 3
FA- 6
FA- 7
FA-1 1
. FA-12
FA-14
. . . FA-15
. . FA-22
. FA-24
RL

FRONT AXLE AND FRONT SUSPENSION
Wheel alignment Camber, caster and kingpin inclination are preset at factory and cannot be adjusted The vehicle requires only toe-in adjustments
1-3 mm (0 04 -0 12 m)
Refer to section MA for Cheekmg Wheel Alignment
Wheel bearing Do not overtighten wheel bearing nut. as this can cause wheel bearing seizure Axial play 0 mm (0 on) . Tbghtenmg torque 25 - 29 N m (2 5 .3 0 kg-m. 18 - 22 ft-lb)
Return angle 60' Rotation narting torque with new grease seal 0.39.0 83 N m (4.0 - 8.5 kg-cm, 3.5.7 4 dbl wth used grease sal 0 10.0 44 N.m (1 0 - 4.5 kvm, 0 87.3 9 #nib) As measured at wheel hub bolt with new grease seal Lerr than 17 7 N (1 8 kg, 4 0 Ib) with used grease seal Lerr than 6.9 N 10 7 kg, 1.5 Ibl When measuring starting torque. do not include "dragging" resistance with brake pads
N m (kg-m, ft-lbl
SFA564
FA-2

FRONT AXLE - Wheel Hub
Baffle plate
pj3 2 - 4 3 10 33.0 44,2 4 - 3 21
f
-Disc rotor
Inner wheel bearing
yAdwstlng cap
* Always replace once they have been removed N rn (kgm, ft-lb)
J
Lock washeri
Wheel bearing lock nut
25-29 125- 3 0,lS 221
SFA565
FA-3

FRONT AXLE - Wheel Hub
Removal
1 Remove brake caliper assembly
Brake
hose must not be disconnected from brake
caliper assembly
2 Remove wheel hub with disc brake rotor and
wheel bearing from spindle
SFA568
Be careful not to drop outer bearing.
3 If it is necessary to replace bearing outer race,
drive
it out from hub with a brass drift and
mallet
h
SFAS80
Inspection
WHEEL BEARING
Check wheel bearing to see that it rolls freely and
IS free from noise, crack, pitting, or wear
WHEEL HUB
Check wheel hub for crack by means of
a magnetic
exploration or dyeing
test, and replace if cracked
installation
Pack hub and hub cap with recommended
multi-purpose grease up to shaded portions
Coat each bearing cone with recommended
multi-purpose grease.
FA781
FA-4

FRONT AXLE - Wheel Hub
Preload Adjustment
I
After wheel bearing has been replaced or front
axle
has been reassembled be sure to adjust wheel
bearing preload
as described below
1. Before adjustment, thoroughly clean all parts
to prevent
dirt entry.
2 Apply recommended multi-purpose grease
sparingly to the following parts
Threaded portion of spindle
Contact surface between lock washer and outer
wheel bearing
Hub cap and O-ring
Grease seal lip
O-'lng7
e- "
MulttpUrpOse grease point
SMAZO3A
3 Tighten wheel bearing lock nut,
25- 29N m 12.5 - 3 0 kgm, 18.22 h-lbl
SFAS87
4. Turn wheel hub several times in both direc-
tions to seat wheel bearing correctly
5. Again tighten wheel bearing nut
6. Turn back wheel bearing lock nut within
60".
7. Fit adjusting cap and new cotter pin,
SMAlZO
8 Measure wheel bearing preload and axial play
Axial play 0 mm IO In) When bearing preloal (As meamred at wheel hub bolt1 WRh new parts
With used parts ~errthanv7~ (iakg,aoIbl
Lerrthan6 9N (07 kg. 15 Ibl SFAS88
Repeat above procedures until correct starting
torque
is obtained
9. Spread cotter pin
SRA417
10 Install hub cap with new O-ring.
I
FA- 5

When removing each s~~pension part, check wheel allgnrnent and adlust If necessary
Refer to section MA for front axle and front suspension When innalling a bushing, do not allow It to prolect beyond the surface ares of the
warhsr
Do not allow the bushings and washers to come in conlact with grease. 011. soapy water. etc
* Always replace whenever disassembled
Strut assembly
Piston rad lock nut
(3 2.4 3,23 - 311
Strut mounting
Suspension crossmember
Tension rod bracket
m29-39
(3 - 4. 22.291
m96.120 19 8.12 2.71 881 Transverse link
LWasher
Lock nut*
m44- 54 (4 5.6 5,33- 40) m n
Knuckle arm
(c1 N m (kg m. ft-lbl g 0 10
n
8
z
-I
v)
c
v)
'cl
v)
z
e
5

FRONT SUSPENSION - Spring and Strut Assembly
Removal and Installation
Remove tension rod nuts and knuckle arm
fixing bolts
Make sure brake hose is secure and not twisted.
Disassembly
Avoid dirt and dust getting inside strut.
Compress spring so as to permit turning of
strut mounting insulator by hand I
SFA571
Remove piston rod lock nut so as not to darn-
age piston rod / /
Remove gland packing with Tool Retract
piston rod
by pushing it down until it bottoms.
n
ST35652000 1 SFA573
Slowly withdraw piston rod from cylinder
together with piston guide.
FA- 7

FRONT SUSPENSION - Spring and Strut Assembly
I nspl
Wash all parts, except for nonmetallic parts,
clean with suitable solvent and dry with com-
pressed air.
a Blow dirt and dust off of nonmetallic parts
using compressed air
a. Oil oozing out around gland packing does not
call for strut replacement.
If oil leakage
is evident on spring seat, check
piston rod and gland packing to correct
the
cause of problem.
If oil leakage occurs on welded portion of
outer strut
casing, replace strut assembly.
b. If shock absorber itself is malfunctioning,
replace
as shock absorber kit (including piston
rod, cylinder, bottom
valve and guide bushing).
INNER CYLINDER AND OUTER CASING
a Inspect inner cylinder and outer casing for
cracks, deformation or other damage. For inner
cylinder damage, replace shock absorber. For
outer casing damage, replace strut assembly
Inner diameter:
Inner cylinder
32 0.32 1 mm (1.260 - 1 264 in)
n
SFA136
Maximum runout.
Inner cylinder
Less than 0.2 mm (0.008 in)
LCylinder
SFA137
PISTON ROD
a Inspect piston rod for cracks, deformation or
other damage Replace shock absorber, if
necessary Inspect threads for cracks or other damage
Replace shock absorber, if necessary.
Rod diameter:
Maximum runout
a
21.78 - 21.94 mm (0.8575 - 0.8638 in)
Less than 0.1 mm (0.004 in)
To'ai gauge R

SFA137 Piston rod
STRUT MOUNTING INSULATOR
Replace if cemented rubber-to-metal portion are
melted or cracked. Rubber parts should also be
replaced, if deteriorated.
STRUT MOUNTING BEARING
Replace if inspection reveals abnormal noise or
excessive rattle in axial direction
FA-8

FRONT SUSPENSION - Spring and Strut Assembly
c _. _.
e 78i8.581 .
: +
0
59 16,431
Assc
Before assembly, keep away from dust to prevent
entry of dust.
Use "NISSAN GENUINE STRUT FLUID" or
equivalent.
Oil capacity
is very important since performance of
strut varies with amount of fluid in strut.
Add correct amount of fluid
Capacity:
270 me (9 1 US fl oz,9.5 Imp fl 02)
__
Lubricate sealing lip of gland packing.
Ea
Install gland packing
Be careful not to damage sealing lip.
FA065
SFA141
Tighten gland packing
ST35652000l 1-1
rTnrque wrench c
lo^, m-I-L m iftJd 10 3ftl
N m Ikg-m,ft-lbl
SFAS91
rn
I I1 01 I1 51 1201 (ftl
L Length of torque wrench
SFA144
FA-9

FRONT SUSPENSION - Spring and Strut Assembly
Repeat following procedures several times so that
air will be thoroughly bled from strut
FA279
FA280
After placing spring in position between upper and
lower spring seats, release compressor gradually.
‘-piace spring m positton
SFA149
FA-I 0