NISSAN 300ZX 1984 Z31 Steering System User Guide

POWER STEERING GEAR AND LINKAGE
1701.
I601
I501
Disassembly and
Rack and inner tube assembling
-
1
Insert rack packing into rack
damage by rack teeth Attach back-up
oat of automatic 80" fluid "Dexion * 1 - n '6 Type" to matlng surface of rack packing 1 ack
k pnrton
KV48103100 lJ342641
ackup collar and rack
1
Insert rack packing into mer tube with tool
SST211A
Tie-rod inner socket installation
After tightening inner socket, bend
lock plate securely and remove burrs

7 Lock plate
Inner socket
Apply locking sealer
78-98Nm ' I8 0 - 10 0 kern. 58.72 h-lbl / I Be sure lock plate ratchet gets into groove at rack end SST213A
Rack stroke
sembly (Cont'd)
Cylinder end housing and pinion housing lock nut
tightening
n : Locknut:
78 - 108 N m
(8.0 - 11.0 kg-m, 58 - 80 ft-lb)
Torque wrench
lJ288201 vc'
98 I101
88 I91
-
04050607 08 m
4' I1 51 I2 01 (2 51 Iff1
Effective length of torque wrench L ssT212A
Tie-rod installation
Lack nut Lock plate
Inner socket
Standard dimension L = 31 5 mm I1 476 In1 When installing tie-rod or adiustmg toe-,".
be careful not to twist boots Toe-," Refer to MA section
Pl"l.3"
Rear housing
I?-
- 62 lz.441 'Cylmder end housing /
SST'214A
iTie-rad inner socket
ICylmder
end hourlng sidel SSTZlBA IPinion sidel
ST-I 1

POWER STEERING GEAR AND LINKAGE
Inspection and Adjustment
PINION PRELOAD AND RACK STARTING
FORCE
After disconnecting hydraulic line and draining
fluid, measure them
Pmon preload Less than 1 2 N m I12 kg-cm, 10 In-lbl
Turn shaft by wrappi towel or wnvl tape ar serrated portion
102100 (J288171
SST216A
Rack starting force 122 6.1863 N I12 5- 19 kg.276 -41 9 Ibl at Steernng Ce"t.3,
SST217A
If they are not within specifications, adjust
retainer adjusting screw
If retainer adjustment cannot be made proper-
ly, fully loosen retainer adjusting screw, and
then adjust pinion preload
Then readjust retainer adjusting screw
If pinion preload adjustment cannot be made
properly, replace steering gear assembly
Retainer adjustment
1
2
3
R
Remove retainer adjusting screw and clean old
locking
sealer off the threads
Apply new locking sealer to the threads
Tighten
the screw to approximately 3 N rn (0.3
kg-m, 2 2 h-lb) and back it off by 20 to 25"
If preload and starting force are within speci-
fied ranges, tighten lock nut securely (Check
rack for smooth movement over
its entire
stroke.)
Pinion preload:
Less than 1.2 Nm 112 kgcm, 10 in-lb)
Rack starting force:
122.6
- 186.3 N
(12.5-19kg,276 -41.9lb)
. Retainer adjusting screw lock nut
39 - 59 Nm
(4.0 - 6.0 kgm, 29 - 43 ft-lb)
Pinion preload adjustment
Before making pinion preload adjustment, make
sure retainer adjusting screw
is loosened com-
pletely
1 Screw in rear housing cover completely and
back it off by 180 to 360". Then turn pinion
a few rotations and then measure pinion
starting torque
KV48101700
I or
SST218A
Pinion starting torque T, :
Free play should not be allowed for pinion
Less than 0.7 Nm (7 kg-cm, 6.1 in-lb)
ST-1 2

POWER STEERING GEAR AND LINKAGE
inspection and Ac
2 Screw in rear housing cover until pinion start-
ing torque equals "T,
", then tighten lock nut
T, =TI
+ T3 [T3 = approx. 0 5 N.m (5 kg-cm,
4.3 in-lb)]
pj . Locknut:
78.137 Nm
(8.0 - 14.0 kgrn, 58 - 101 ft-lb)
KV48101700 lJ288191 KV48101690 lJ28818)
1501 2 69 171 _. -.
? 1 59(61!* T %40.50 60.70 8 m - 9
5 4, I1 51 12 01 (2 51 lft)
Effective length of torque wrench L SST219A
Measure pinion starting torque T4 to make sure
it is within specified range
T4
:
3
Less than 0.8 N.m (8 kgcm, 6.9 in-lb)
and
TI
+ [0.10 - 0.25 Nm (1.0.2.5 kg-cm,
0.87.2 17 in-lb)]
4. If T, does not meet the above two values, re-
peat step
2 and re-adjust pinion preload using
T3.
TIE-ROD OUTER SOCKET
1 Check ball joint for swinging torque. /
SST130A
ustment (Cont'd)
Tie-rod outer socket:
Swinging toque
0.29.2.94 Nm
(3
0 - 30 kg-cm, 2.6 - 26.0 in-lb)
2 Check condition of dust cover If it is cracked
excessively, replace.
TIE-ROD INNER SOCKET
Check inner socket for swinging torque and play If
ball stud
is worn and play in axial direction IS ex-
cessive or joint
is hard to swing, replace as a com-
plete unit.
Tie-rod inner socket:
Swinging toque
1.0 - 7.8 N m
(10 - 80 kg-cm, 8.7 - 69.4 in-lb)
0 mm (0 in)
Axial play
n
it- * SSTl 06A
BOOT
Check condition of boot
If it is cracked excessive-
ly, replace boot
CYLINDER TUBES AND BREATHER HOSE
Check cylinder tubes and breather hose for
scratches or other damage
Replace if necessary
STEERING GEAR COMPONENT PARTS
Thoroughly examine those component parts.
If
those parts are damaged, cracked or worn, replace
as steering gear assembly
ST-1 3

POWER STEERING OIL PUMP
Connector Ispool cover1 Flexible hose
69-78
38.52 mi7'0-80'51 1 A Washe2 Connector bolt
7 . I 0 9- 12 (09.12.65 -871 13 9.5 3,28 - 381
s,,rr,nn ",no.... I
36-51] --I ..I.. r,r_
re switch (Non-turbocharged model)
Htgh-pressure ride
hydraultc
line pressure
1,961
- 2,942 kPa
(20.30 kg/cm' ,
Decreasing to aPProx
Turn ON
981 -2,942 kPa
(10 - 30 kg/cm' ,
142-427~511 1
42 I3 2 -43.23- 31)
L Pulley shaft (When assembling pulley shaft. be careful
not to damage oil seal lip1 seal
am
(41 31 -42 13.2 - 4.3, 23 - 311 (41 N m (kg-m. ft-lb)
fl Lubricatzon points (with automatic transmission fluid "Dexron Type") @ ~onotreu~
- Pre-disassembly Inspection
The power steering oil pump should be disassem-
bled only
d any of the following conditions are
ObSWVed.
Oil leak at the following points
SST126A
Deformed or damaged pulley
SST220A
Oil Pump Installation
mounting bracket
steering pump
(41 N m (kgm, ft-lbl
SST221A
m16-21 (1.6-21,
12.15)
After installing oil pump, adjust belt tension.
Refer to MA section.
ST-1 4

POWER STEERING OIL PUMP
Diassernbl y
CAUTION:
a The parts which can be disassembled are strict-
ly limited, and never disassemble other parts
than the specified ones.
Disassembly should be performed in
a place as
clean as possible.
Do not use a rag. Be sure to use nylon or paper
cloth.
When disassembling and reassembling, do not
allow any foreign material to enter
or contact
any parts.
a
a
a
1 Make matching marks.
Matchmg marks 4 SSTl27A
2 Remove rear cover
3
CAUTION :
When removing cam case, be sure that the vane
does not come
off the rotor.
Remove O-rings from cam case.
SSTO32A ,
4
a
Remove snap ring, then draw pulley shaft out
Be careful not
to drop pulley shaft.
SST033A
5. Install cam case and rear cover, then remove 011
seal.
Be careful not to damage casing.
0
f
SST034A
6. Remove joint.
0 Be careful not to drop spool.
L spool
SSTOJSA
7. Remove suction pipe, then remove O-ring
ST-1 5

POWER STEERlNG OIL PUMP
Inspection
Wash clean all disassembled parts (inside pump) in
suitable cleaning solvent.
PULLEY AND PULLEY SHAFT
0
0
If pulley is cracked or deformed, replace it.
If an oil leak IS observed around pulley shaft oil
seal, replace it.
If serration of pulley or pulley shaft IS de-
formed
or worn, replace it.
0
OIL PRESSURE SWITCH
(Non-turbocharged model)
Operation High-pressure side hydraulic
line pressure kPa (kglcm', psi) ~~
I Turn ON Increasing to 1,961 - 2,942
(20- 30,284 ~ 4271
Turn OFF Decreasing to Approx
981 .2,942 (10 - 30,142 - 427)
Refer to "Hydraulic
System Check" in "POWER
STEERING SYSTEM
- Checking"
Assembly
Assemble 011 pump in the reverse order of dts-
assembly, noting the following instructions
Before installing O-rings and oil seal, apply a
thin coat of power steering fluid to them.
Make certain that O-rings and oil
seal are
installed properly.
Discard old O-ring and oil
seal and install new
ones Be careful of
oil seal direction.
Wiring Diagram -Oil Pressure Switch
FUSE BLOCK
IGNITION SWITCH
I a
Y
Ln v)
E
ENGINE ROOM E I R HARNESS HARNESS
IWhnsl d'
POWER STEERING OIL PRESSURE
SST222A
ST-1 6

SERVICE DATA AND SPECIFICATIONS (S.D.S.)
Turn of steering wheel (Lock to lock1
General Specifications
28
Steering gear type I [Power PR24S rteerlngl
I Collapsible
Column length L mm lcnl
Non4ilt type
Column lensth "L"
steermg column set
L = 478 7.4803 mm
SST207A
Tilt type Jumping UP
,' Tilt UP
L=4787-4803mml1885 1891 ~nl SSTZ08A at steering column Neutral position
Steering o~erall gear ratio I 17 1
Power steering fluid
Automatic transmission fluid "DEXRON type"
P IUS pt. Imp ptl ApProx 0 9 (1-718. 1-5/81
TVpe 1
Capacity
Normal operating temperature 60-80 (140.1761 "C (OF1
-Inspection and Adjustment-
GENERAL
Steering wheel axial play mm Im1 I 0 IO1
Steering wheel play mm (in1 I Less than 35 (1 38)
Power steering system Steering wheel turning force at
360* Position from Neutral
N lkg,Ibl
011 pump belt deflection
(Measured when engine 16 cold1 mm (in1198 N 110 kg.22 Ibl
Less than 39 2 14 0,8 81
New 10.13
(0 39.0 511 Used 13-16
I051 -0631 Limit 21 (0 831 -
Replace belt to new one
6.669.7257 kPa Ikglcm', PSI) I 168.74,967.1 p521
011 pump maximum pressure
011 pressure switch operation
Hydraulnc he pressure Operation kPa 1kglcm'. pro1 I
Increasing to 1,961 .2>42
l20.30,284 - 4271 Turn ON I
I TurnOFF I Decreasing to 981 .2,942 110-30.142-4271 I
ST-1 7

SERVICE DATA AND SPECIFICATIONS (S.D.S.)
Tie-rod outer ball joint
Swinging torque N m (kgim. m4b)
- Inspection and Adjustment
(Cont'd)
0 29.2 94
I3 0.30,2 6.26
01 ~~~
Pinion gear
preload
(Ptnlon and rack gear assembly without
fluid1 N m Ikgcm, tn-lbl
Tie-rod inner ball joint 10-78 Swinging torque N m (kgem, in-lb) 110 - 80.8 7 .69 41
__~ ~
Less than 1 2 (12.10)
Axial Dlay mm (in) I 0 IO)
Rack stroke
Pinion
I' ? Pack
Rear housing
Tne-rod innel rocket Tie-rod inner socket
& .l
Unit mm Ion) linder end housina - ICyImder end hourmg sadel SST223A
Tie-rod standard length mm (In)
Inner rocket
8 Standard dimensnn L = 37 5 mm I1 476 ln) e When installing tie-rod or adjusting toe-in, be careful not Io twist boots Toe-in Refer to MA seCtion SST214A
1226- 1863
(12 5.19.276 -41.9) Rack stanmg force at steering center (Pinion and rack gear assembly without
fluid) N (kg. Ib)
Tightening Torque
STEERING COLUMN ~~~~
U"lt Nm kg-m ft-lb
Steering wheel nut 49-59 50-60 36-43
Steering column to
body 9 - 14 09-14 65-101
Hole cover to dash panel 3 .5 03-05 22-36
Columnlaintfixingbolt 32-38 33-39 24.28 (Lower joint, column set)
Jacket lower tube to
34-44 035-045 25-33 steering column clamp
STEERING GEAR & LINKAGE (PR-24s)
Unit Nm kg-m ft-lb
Tie-rod lock nut
Tie-rod inner socket to
rack (With sealant)
Cylinder end housmg
& pinion housmg lock nut
Rear housmg to pman
housing
Rear housing
cover lack
nut
Retainer lock nut
Cylinder tube flare nut
Gear & linkage mounting
Tie-rod
to knuckle arm
78 -98
78 -98
78 - 108
8-12
78.137
39 - 59
20
- 26
29-39
54 -98
80-100
80.100
80.110
08-1 2
80-140
40-60
20-27
30-40
55-100
58.72
58-72
58-80
58-87
Ea - 101
29 -43
14-20
22-29
40 - 72
OIL PUMP
U"lt Nm kg-m ft-lb
Mounting bracket to engine 14. 18
Engine sllnger mounting 14 - 18 bolt
011 pump to mounting 31 .42 bracket (Through bolt)
011 pump casing to 31 -42 rub bracket
Adlusting bar bracket
to 16.21 mounting bracket
Sub bracket to adjusting bar
16 - 21
Pulley lock nut 31 -42
Rear cover fixing bolt 38 - 52
Connector (Spool cover) 69 - 78
Suction piDe to easing 9-12
14-1 8
14-18
33-43
32-43
16-21
16-21
32-43
39-53
70-80
09-12
10-13
10
- 13
23 - 31
23 - 31
12-15
12-15
23.31
28-38
51
-58
65-87
ST-1 8

SERVICE DATA AND SPECIFICATIONS (S.D.S.)
Tightening Torque (Cont'd)
HYDRAULIC LINE AND OIL PRESSURE
SWITCH
U"lt Nm kg-m ft-lb
Lowpressure pipe to 27-39 28-40 20-29
Steering gear
Highpressure pipe to
15-25 15-25 11-18
steering gear
H ig hprerw re pipe 49 - 69 50-70 36-51
connector bolt
(At
011 pump1
011 pressure switch 13.18 13-18 9-13
ST-19

SPECIAL SERVICE TOOLS
Tool number
(Kent-Moore
No )
ST27 180001
1525726)
HT72520000
(J25730-A)
ST27091000 lJ26357)
KV48101600
(J28818)
KV48101700
(528819)
KV48101800
(528820)
KV48102100
(J28817)
KV48103100
(534264)
Tool name
Unit application
X
Steering wheel puller
a join remover
Rear housing lock nut
wrench
Rear cover wrench
e X
I
Cylinder lock nut
wrench
X
I
X
Power steering stand
X
Rack packing installer
ST-20