Service Manuals, User Guides, Schematic Diagrams or docs for : . Car Manuals Nissan 300ZX 1984-1985,1988,1990,1994-1996 Approved 1988 Front Axle & Front Suspension
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FRONT AXLE &
FRONT SUSPENSlOh
SECTION FA
CONTENTS
FRONT AXLE AND FRONT SUSPENSION ................................... FA- 2
FRONT AXLE .Wheel Hub ................................................ FA- 3
FRONT SUSPENSION ..................................................... FA- 6
FRONT SUSPENSION -Spring and Strut Assembly .............................. FA- 7
FRONT SUSPENSION -Tension Rod and Stabilizer Bar ........................... FA-11
FRONT SUSPENSION -Transverse Link ....................................... FA-12
FRONT SUSPENSION - Suspension Crossrnember ............................... FA-14
ADJUSTABLE SHOCK ABSORBER (Including wiring diagram) .................... FA-15
SERVICE DATA AND SPECIFICATIONS (S.D.S.) .............................. FA-24
SPECIAL SERVICE TOOLS ................................................ FA-26
When you read wiring diagrams:
Read G I section. "HOW TO READ WIRING DIAGRAMS" .
See EL section. "POWER SUPPLY ROUTING" for power distribution circuit .
.
FRONT AXLE AND FRONT SUSPENSION
Wheel alignment
Camber, carter and kingpin inclination are
preset a t factory and cannot be adjusted.
The vehicle requires only toe-in adjustment.
- -
1 3 mm (0.04 0.12 in)
6'. 17' ITotal toe-in)
Refer to section MA far Checking Wheel Alignment
3 - 42 (3.2.4.3.23 - 3 I
1 1
Suspension crossmember
fixing bolt
69 - 8 8 (7-9.51-551 (c169- 8 8 (7-9.51 -651
(c1 93 - 113 (9.5.11.5,69-83)
Bound bumper
Suspension crossmember
Front
29.39 (3.4,22.29 Transverse link
Tension rod bracketJ `Tension rod
.
.
Wheel bearing
Do not overtighten wheel bearing nut. as this can cause wheel bearing seizure,
Axial play: 0 mm ( 0 in1
-
Tightmino torque 25.29 Nm (2.5 3 0 kg-m. 18 .22 ft-lbl
.
Rmurn an& W
Rotation m r t i n g torque
- -
with new grease -1 0 3 .0.83 N m (4.0 8.5kgcm. 3 5 7 4 in-lbl
.9 . .
withusdgrusesMl0.10-0.44N~m(1.0-4.5kgcm,0.87-3.91 in-lb)
As measured at w h n l hub bolt
-
with new grease MI 6.86 .1 . 1 N (0.70 1 4 kg, 1 5 .3.29 Ibl
46 .9 .4
-
with u s d grease sed 1 5 .7.15 N 1 . 7 .0.79 kg, 0.37 1 7 ibl
.7 01 .4
When measuring starting torque,do not include "dragging" resistance with brake pads
p? : N m (kgm.ft-lbl
SfA236A
FA- 2
FRONT AXLE - Wheel Hub
VG30E ENGINE MODEL
f / / / AaIustmg cap
(91 59.69 (6.0.7.0. a . 5 i 1
,
Outer wheel bearing m
* : Replaw when dirarrembled.
(91 : N.m I k g m , ft-lbl Wheel bearing lock nut
(91 25.29 (2.5.3.0,lE - 221 SFA974
VG30ET ENGINE MODEL
G ~ 8 e a l . S
Inner wheel bearing
7 Brake disc rotor
Outer wheel bearing m
Adjusting cap
Baffle plate
Wheel bearing lock nut
(01 25-34
-
(2.5 35,18.251
* : Replam when disassembled. Cotter pin*
[01 : N m Ikg-m, ft-lbl O-ring.
SFA379A
FA-3
FRONT AXLE - Wheel Hub
Removal Inspection
1. Remove brake caliper assembly. WHEEL BEARING
Brake hose does not need t o be disconnected from Make sure wheel bearing rolls freely and is free
brake caliper assembly. from noise, crack, pitting or wear.
WHEEL HUB
Check wheel hub for cracks by using a magnetic
exploration or dyeing test, and replace if cracked.
2. Remove wheel hub with disc brake rotor and 0 Pack hub and hub cap with recommended
wheel bearing from spindle. multi-purposegrease up to shaded portions.
\ SFA975
Be careful not t o drop outer bearing.
3. I f replacement of outer race is necessary, drive
U SFA966
it out from hub with a brass drift and mallet.
0 Coat each bearing cone with recommended
multi-purposegrease.
FA781
FA-4
FRONT AXLE - Wheel Hub
Preload C iustrnent
After wheel bearing has been replaced or front axle 7. Install adjusting cap and new cotter pin.
has been reassembled, adjust wheel bearing pre-
load.
1. Throughly clean all parts to prevent dirt entry
before adjustment.
2. Apply recommended multi-purpose grease
sparingly t o the following parts.
Threaded portion of spindle.
Contact surface between lock washer and outer
wheel bearing.
Hub cap and O-ring.
SFA967
Grease seal lip.
8. Measure wheel bearing preload and axial play.
O-ring
7
: Multipurpose grease point
SMA203A
Axial play: 0 mrn ( 0 in)
3. Tighten wheel bearing lock nut. When bearing preload
(As measured at wheel hub bolt):
With new parts
6.86-14.61 NI0.70-1.49kg.1.54-3.29Ib)
With used parts
1.67-7.75N10.17-0.79kg.0.37-1.74lbl
SFA977
Repeat above procedures until correct starting
torque is obtained.
9. Spread cotter pin.
SFA976
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 SFA968
60". 10. Install hub cap with new O-ring.
FRONT SUSPENSION
E
i
SFA380A
FA-6
FRONT SUSPENSION - Spring and Strut Assembly
Removal and Installation Disassembly
Remove brake caliper assembly without Avoid dirt and dust getting inside strut.
disconnecting brake line. Compress spring to permit turning of strut
mounting insulator by hand.
SFA571
Remove piston rod lock nut.
Be careful not to damaoe bolts.
Remove knuckle arm fixing bolts.
SFA572
, , .
Remove gland packing with Tool. Retract
piston rod by pushing it down until it bottoms.
"
SFA978
Make sure brake hose is secure.
Slowly withdraw piston rod and cylinder.
FA-7
FRONT SUSPENSION - Spring and Strut Assembly
Wash all parts, except for nonmetallic parts,
clean with suitable solvent and dry with com-
pressed air.
0 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 t o correct the
cause of problem.
If oil leakage occurs on welded portion of LCylioder
outer strut casing, replace strut assembly. SFA137
b. If shock absorber itself i s malfunctioning,
PISTON ROD
replace as shock absorber kit-cartridge.
Inspect piston rod for cral :s, de rmation or
other damage. Replace shock absorber kit-
cartridge, if necessary.
INNER CYLINDER AND OUTER CASING Inspect threads for cracks or other damage.
Replace shock absorber kitcartridge, if neces-
0 Inspect inner cylinder and outer casing for
sary.
cracks, deformation or other damage. For inner
cylinder damage, replace shock absorber kit- Rod diameter:
cartridge. For outer casing damage, replace Refer to S.D.S.
strut assembly. Maximum runout:
0.2 mm (0.008 in)
Inner diameter:
Inner cylinder
32.0 - 32.1 mm (1.260 - 1.264 in)
Piston rod
SFA137
STRUT MOUNTING INSULATOR
Replace if cemented rubber-to-metal portion are
\ SFA136 melted or cracked. Rubber parts also need t o be
replaced, if deteriorated.
Maximum runout: STRUT MOUNTING BEARING
Inner cylinder Replace if inspection reveals abnormal noise or
Less than 0.2 mm (0.008in) excessive rattle in axial direction.
FA-%
FRONT SUSPENSION - Spring and Strut Assembly
Assembly
Before assembly, keep all parts away from dust. Tighten gland packing with Tool.
[When shock absorber kit-cartrigde is not used.] Be careful not t o damage piston rod.
(1) Add oil.
Use "NISSAN GENUINE STRUT FLUID" or
equivalent.
Oil capacity is very important since strut perform-
ance varies with amount of fluid in strut.
Capacity:
270 m (9.1 US fl 02.9.5 Imp fl 0 2 )
P
ST35652OW
( - 1
SFA591
Torque wrench c
FA065
(2) Lubricate sealing lip of gland packing.
W
a
N.rn Ikgrn, ft-lb)
108lll.80)
SFA141 98 110.721
(3) Install gland packing.
Cover piston rod with tape so as not to damage
e
.-
88 19,651
-2
sealing lip. e
: 78 (8.58)
D
I-"
6 69 17.51)
LTaping
- 1
59 16,431
0
0.3 0.4 0.5 0.6 rn
11:01 11151 l2:ol lftl
L: Length of torque wrench
SFA672
SFA574
FA- 9
FRONT SUSPENSION - Spring and Strut Assembly
Assembly (Cont'd)
Repeat following procedures several times so that
air will be thoroughly bled from strut.
[When absorber kit-cartridge is not used.]
FA279
FA280
After placing spring in position between upper and
lower spring seats, release compressor gradually.
Place spring in position
SFA149
FA-I0
FRONT SUSPENSION - Tension Rod and Stabilizer Bar
Removal an1 Installation
[STABILIZER BAR] [TENSION ROD]
Remove stabilizer bar. Remove tension rod.
SFA381A
SFA382A
When removing and installing stabilizer bar, fix
portion A.
Final tightening needs to be carried out at curb
Stabilizer bar weight with tires on ground.
Trenwerre link
W SFA239A
Install stabilizer bar and ball joint socket
properly placed.
View from B
O.K. N.G
SFA002A
FA-1 1
FRONT SUSPENSION - Transverse Link
Removal a Installation
Separate knuckle arm from tie-rod with Tool. To install transverse link, first temporarily
tighten nuts securing transverse link spindle
which connects transverse link t o suspension
cross member.
Final tightening.needs to be carried out a t curb
weight with tires on ground.
Make sure mating surface of bushing is clean
and free from oil and grease.
SFA575
Separate knuckle arm from strut. Then remove
stabilizer, tension rod and transverse link.
SFA576
Separate ball joint from knuckle arm with
press.
SFA577
F A - I2
FRONT SUSPENSION - Transverse Link
tion
Check ball joint for play. If ball stud is worn, (1) Jack up front of vehicle and set the stands.
play in axial direction is excessive or joint is (2) Clamp dial indicator onto transverse link and
hard t o swing, replace transverse link assembly. place indicator tip on lower edge of brake
caliper.
(3) Make sure front wheels are straight and brake
pedal i s depressed.
(4) Place a pry bar between transverse link and
inner rim of road wheel.
(5) While pushing and releasing pry bar, observe
maximum dial indicator value.
(6) Replace transverse link or lower ball joint if
ball joint movement is beyond specifications.
Check condition of dust cover. Replace if
necessary.
SFA581 Check rubber bushing for cracks, deformation
or other damage; bush assembly if necessary.
Turning torque " A : Check transverse link for cracks, deformation
New parts or other damage; replace transverse link if nec-
-
1.5 4.9 N m essary.
-
(15 50 kgcm, 13 - 43 in-lb) Remove plug and install grease nipple in i t s
Used parts place.
1.0 N.m (10 kgcm, 8.7 in-lb) or more Pump grease slowly until old grease is com-
Turning torque "E": pletely forced out. After greasing, reinstall
New parts
Plug.
1.5 - 4.9 N m
When a high-pressure grease gun is used, operate
(15 - 50 kgcm, 13.43 in-lb)
the grease gun carefully so that grease is injected
Used parts
slowly and new grease does not come out from the
1.0 N m (10 kgcm, 8.7 in-lb) or more
clamp portion.
Vertical end play "C":
2.5 mm (0.098 in) or less
SFA3OlA
FA-I 3
FRONT SUSPENSION - Suspension Crossmember
Removal and Installation Inspection
Precaution Check suspension crossmember for deformation or
Support engine to remove load from engine mount- cracking:
ing. Replace if necessary.
FA-I4
ADJUSTABLE SHOCK ABSORBER
r Strut assemblv
I\. ~ [ 0311
.42 -
13.2 .4.3,23 31)
Sub-harness
-
112 15,87.1081
Shock
MW -88 (7 -9.51.651
absorber
Strut mounting insulator
-strut mounting bearing
j
@B u d
- on bumpar
@-.Dustcover
[01: N m Ikgrn,ft-lbl
* Always replace once disassembled
SFA979
Removal an Installation
CAUTION: 0 Remove strut and knuckle arm fixing bolts.
Keep water and dust away from connector.
Disconnect connector gripping on both sides of
sub-harness connector.
SFA978
Make sure that brake hose is secure.
FA-I5
ADJUSTABLE SHOCK ABSORBER
-Removal and Installation(Cont'dl- Assembly
Connect sub-harness to connector within 0 Carefully insert the shock absorber cartridge
piston rod using guide. Be careful not t o into the outer strut tube.
damage connector. CAUTION:
Do not drop the shock absorber.
7-l SFA165
Disassembly After the shock absorber has been inserted
into the outer tube, gently shake the strut
Avoid dirt and dust getting inside strut.
assembly right and left so that the shock
Remove coil spring. Refer to Front Suspension
absorber is centered.
(Spring and Strut Assembly).
0 Install gland packing and tighten the gland
0 Remove gland packing. Refer to Front Suspen-
packing with the Gland Packing Wrench and
sion (Spring and Strut Assembly).
a torque wrench.
Refer t o Spring and Strut Assembly for assem-
bly.
Inspection
Refer t o Front Suspension (Spring and Strut
Assembly).
F A - I6
ADJUSTABLE SHOCK ABSORBER
Assembly (Cont'd)
Be careful not to damage piston rod when
tightening.
n
ST35652O0O2
1 - I SFA591
Torque wrench
.C
0.1 m
L m (tt) 4
10.3 ftl
N m 1kg.m. ft-lbl
114. 1011
13' t+-tH-t
0.3 0.4 0.5 0.6 0.7 0.8 m
I
11.01 (1.51 12.01 (2.51 (ftl
L: Length of torque wrench
SFA671
Further steps are the same procedure as the
conventional strut assembly. Refer to Spring
and Strut Assembly for assembly.
FA-I 7
ADJUSTABLE SHOCK ABSORBER
Harness Description
Rear shock absorber
SFA590
Electrical Circuit
SCHEMATIC
SHOCK ABSORBER
lscnrorl
SFAl95A
F A - I8
SFA320A
FA-19
ADJUSTABLE SHOCK ABSORBER
No. Phenomenon on switch Possible cause
0 Lamp (L.E.D.) burnt out 0 Fuse blown
1 3 lamps a l l off
0 Harness wire broken 0 Select switch out of order
0 Select switch out of order
2 2 lamps on
0 Switch side harness shorted
0 Select switch out of order 0 Control unit out of order
0 Switch ride harness shorted
One lamp on and 0 Shock absorber damage 0 Open circuit in sub-harness
2 lamps on and off 0 Open circuit in main harness 0 Control unit out of order
n 3 lamps all off
One or
two lamps
Turn ignition switch off, then Turn ignition switch off, then
change position on select switch.
Turn ignition switch on again,
then check lamp for lighting
Ll R e p y select I change position on select switch.
Turn ignition switch on again,
then check lamp for lighting
side harness.
condition. condition.
3 lamps all off 2 lamps on for other
2 selected positions
Check fuse. Replace fuse.
I
I
Check select switch.
Refer to check 3.
N.G.
I
condition?
Refer to check 1.
c
I J Replace select switch.
m
O.K.
Replace select switch.
FA-20
ADJUSTABLE SHOCK ABSORBER
Trouble-shooting (Cont'd)
Turn ignition switch off, then change I I
the position on the select switch. Turn
Check select switch.
the ignition switch on again, then check
Refer to cheek 3.
- -
the lam0 for liahtins condition. I
I I
I
1
O.K.1 1 N.G.
O.K.
One lamp on and two lamps
Check control unit.
Refer to check 2.
4. One lamp on and 2 lamps on and off
Turn ignition switch off, then check
each harness connector for connecting
O,K,
condition. Turn the ignition switch on
again, then check the lamp for lighting
condition.
I 1
1N.G.
Check input signal of control unit.
Refer to cheek 2.
Check continuity of sensor using
sub-harness connector.
Turn select switch to S position with
ignition key off. Turn ignition switch N.G.
I
on and then turn it off in 2 or 3
seconds. Remove the sub-harness.
Then check i t s continuity.
Motors might not turn to S Position
if ignition key is turned off in less
than 2 seconds, and motors will turn
to N position if ignition key is turned
Replace shock absorber.
L___-J
Shock abmrbnr
Replace control unit. Replace sub-harness.
O.K. N.G.
3-5
4 -5
select switch to N or F position.
.=FAI)pI-.a
FA-21
ADJUSTABLE SHOCK ABSORBER
Terminal Check
(+) (-1
or ohmmeter
0 Body ground Yes
SFA240A
I
Voltmeter I I
(+) (-1
Ignition switch
Ohmmeter
0 0 Approx. 12 V
position "ON"
I SFA087A
CHECK 2: CONTROL UNIT CHECK
1 . Connect voltmeter from harness side.
2. Turn ignition switch t o "ON".
3. Measure voltage across each terminal.
I SFA240A Sensor check
"SOFT" "FIRM' 1 "NORMAL"
FA-22
ADJUSTABLE SHOCK ABSORBER
Terminal Check (Cont`d)
CHECK 3: SELECT SWITCH CHECK
1. Disconnect select switch connector, then connect an
ohmmeter to switch.
2. Check for continuity between terminals at each switch
position.
\ Terminal 1 I I I
Switch C S N F
position
SF A0898
"S" (Soft) 0 0
"N" (Normal) 0 0
"F" (Firm) 0 0
FA-23
VG30ET VG30E
2 seater 2+2 seater 2 seater 2+2 seater
Item GL.GL-L SF.GL.GL-L GL GL-L
Suspension Strut with coil spring
Coil spring
Wire diameter mm (in1 14.8 10.583) 13.8 10.543) 13.9 (0.5471
Coil diameter mm lid 170 6.69)
Free length mm l i n l 268.5 110.57) 312.5 (12.301 318.5 112.541
Spring constant
34.3 13.5, 1961 23.8 12.43. 136.1)
Nlmm lkg/mm. Iblinl
Blua x 1,
Identification color Yellow x 1. Orange x 1 Blue x 1. White x 1
Orange x 1
Strut
Garfilled double acting hydraulic Double acting hydraulic
Type
Adjustable Non-adjustable
lnnar cylinder
Inner diameter mm l i n l -
35.0 .35.1 11.378 1.3821 I 32.0-32.1 11.260-1.264)
~~
Maximum runout mm (in) I Less than 0.2 10.0081 I Less than 0.2 (0.0081
Piston rod
Rod diameter mm (in) 25 (0.981 22 10.87)
~
Maximum runout mm (in) I Less then 0.1 (0.0041
I Less than 0.1 1O.OWI
Stroke
Maximum/Minimum
mm lid -
189.8. 193.8/39.5 (7.47 7.63/1.5551
Damping force [at 0.3 m 11.0 ft)/sec.l Firm Normal Soft
1.579-2.148 1,579-2.148 1 3 2 4 - 1,775
Expansion NIkg,Ib) 1161-219, 1161-219, 1135-181. 834 - 1,128 185- 115.187-254)
355-4831 355-4831 298-399)
834.1,128 834 - 1,128 657.912
Compression N Ikg. Ib) 185 - 115. -
I85 115, 167 - 93, 363 - 520 137.53,82 - 1171
187-254) 187-254) 148-2051
Stabilizer bar diameter mm lin) 24 (0.94) 22 10.871
Tension rod diameter mm (in) 18 10.71 1
FA-24
SERVICE DATA AND SPECIFICATIONS (S.D.S.)
-Inspection and Adjustment Tightening Torque
WHEEL ALIGNMENT (Unladen'l) Item Nm kg-m ft-lb
Camber degree -35' t o 55' Wheel hub
Wheel bearing lock nut 25 - 29 2 . 5 . 3.0 18-22
Caster degree 5'50' - 7-20'
Wheel hub t o disc rotor 59.69 6.0. 7.0 -
43 51
mm linl 1 . 3 IO.W~O.121
Toe-in Wheel nut 98-118 10-12 -
72 87
degree.2 6-17' Knuckle arm and knuckle
~~
spindle (Strut assembly)
Kingpin inclination degree 12"55'- 14'25' Knuckle arm t o ride rad 54.98 5.5 - 10.0 40.72
Front wheel turning angle Knuckle arm t o 72.97 7.3.9.9 53.72
Tae*,ut-turn knuckle spindle
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