steering wheel NISSAN 300ZX 1984 Z31 Steering System Workshop Manual

STEERING SYSTEM
I---
SECTION ST
CONTENTS
STEERING SYSTEM . . . ... ..
STEERING COLUMN . . . .... ..
POWER STEERING SYSTEM -Checking - . ..
POWER STEERING GEAR AND LINKAGE
POWER STEERING
OIL PUMP . .. ... ..
SERVICE DATA AND SPECIFICATIONS (S D S ) . . . . . . . .
SPECIAL SERVICE TOOLS . .. .. ..
Refer to section MA for:
CHECKING WHEEL ALIGNMENT
Toe-in
Front wheel turning angle
BASIC MECHANICAL SYSTEM
Checking drive belts
. ST- 2
ST- 4
.. ST- 6
. . ST- 8
ST-14
. .. .. ST-17
. . . ST-20

STEERING SYSTEM
a Fully turn steering wheel to the right and disconnect whole hydraulic line to steering gear ASSY. then remove steering gear
Whenever dirconnecitng hydraulic lines, cover openings to prevent foreign material from entering
a Be careful not to damage hydraulic line connection
a Do not reuse O-ring in hydraulic system.
a When conecting hydraulic line, apply a coat of oil (Automatic transmission fluid "Dexron Type") to O-rings
If disconnecting hydraulic line. always perform leak test and bleed air from line after filling it with oil
a After properly installing steering gear and linkage, check wheel alignment Refer to section MA
ST-2

POWER STEERING SYSTEM -Checking
Fluid Level Check
Check the fluid level when the fluid IS cold.
Refer to MA section
Power Steering Pump
Belt Tension
Refer to MA section
Fluid Leakage Check
1 Run engine at idle speed or 1,000 rpm
Make sure temperature of fluid
in tank rises to
60 to 80°C (140 to 176°F).
2 Turn steering wheel to right-to-left several
times
3 Hold steering wheel at each "lock" position for
five seconds
and carefully check for fluid
leakage
CAUTION :
0 Do not hold steering wheel at "lock" position
for more than 15 seconds at a time.
0 If fluid leaks at connectors, replace O-ring (if
equipped) Do not overtighten connector as
this can damage O-ring and connector.
- Bleeding Hydraulic System -
1. Raise front end of vehicle until wheels clear
ground
2 While adding fluid, quickly turn steering wheel
fully to right and
left and lightly touch steering
stoppers.
Repeat steering wheel operation until fluid
level no
longer decreases
Repeat step 2 above
3. Start engine.
Hydraulic System Check
Before starting, check belt tension, driving pulley
and tire pressure. (Refer to MA section )
1 Set Tool Open shut off valve Then bled air
(See "Bleeding Hydraulic System" )
ST27091000 lJ263571
L 1 ow pressure
& Direction of 011 flow hose
ET834
2 Run engine.
Make sure temperature of fluid in tank rises to
60 to 80°C
(140 to 176°F).
3 Check pressure with steering wheel fully turned
in left and right
CAUTION:
Do not hold steering wheel at lock position for
more than fifteen seconds.
Standard pressure:
6,669 - 7,257 kPa
(68
- 74 kglcm' ,967 - 1,052 psi at idling)
4
0
0
If oil pressure is below the standard, slowly
close shut-off valve and check pressure
If pressure raises to standard, gear is damaged
If pressure remains below standard, pump
IS
damaged.
Gear may be damaged
If oil pressure is above the standard, pump may
be damaged 5
CAUTION:
Do not close shutoff valve for more than fifteen
seconds.
6 After checking hydraulic system, remove Tool
and add fluid as necessary, then completely
bleed
air out of system
ST-6

POWER STEERING SYSTEM -Checking
Turning Force Check
1. Park vehicle on a level, dry surface and set
parking brake
2 Bring power steering fluid up to adequate
operating temperature. [Make sure temperature
of fluid
is approximately 60 to 80°C (140 to
176"F)l
Tires must be inflated to normal pressure.
3 Check steering wheel turning force when
steering wheel has been turned 360" from
neutral position
Steering wheel turning force.
Less than 39 N (4 kg, 9 Ib)
SST474
-Steering Wheel Play Adjustment -
Steering wheel axial play:
0 mm (0 in)
Steering wheel play.
Less than 35 mm (1.38 in)
If steering wheel play is not within specifica-
tions, check condition of column shaft and
tie-
rod ball points If they are in good order, ad-
just rack retainer
Rack retainer adjustment:
a) Adjust only when steering wheel play is
outside specifications
b) Prior to adjustment, completely loosen ad-
justment screw, clean old locking sealer
and apply new locking sealer.
Tighten the screw to approximately
3 N.m (0.3 kg-m, 22 ft-lb) and back off
by
20 to 25" Measure steering wheel
play to make sure
it is within specifi-
cations. Then tighten lock nut
"1
kg-m. 29 - 43 ft-lbl
c) After adjustment, drive vehicle at low speeds to
check for proper operation
of steering system
ST-7

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

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