1984 NISSAN 300ZX check oil

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 GEAR AND LINKAGE
Disassembly and Assembly
0 Do not disassemble unless repairing to stop oil leak, replacing tie-rod and tie-rod inner rocket ball joint, or for various
adjustments.
0 Do not reuse O-rings or oil seals.
0 When assembling, apply a coat of oil to mating surfaces of O-rings and 011 seals
0 When assembling, be careful not to damage oil seals
0 Before starting work, thoroughly clean all parts in cleaning solvent or automatic transmission fluid "Dexron Type" and
blow dry with compressed air, if available.
0 After assembling tie-rod inner socket to rack & housing ASSY, check rack stroke (refer to "Rack stroke")
Lock nut
Refer to "Cylinder end housing and Refer to 'Tie-md inner Locket mtallation"
7 .... . . , . pmon housing lock nuts tight !e","." -
&?; '(80 100.58-72)
78.108
[Using tool KV48101800
when assembling ram ana cylinder end housing ASSY, becareful not to damage 011 seal
"18 0.11 0,58.80)
e]'
/ I
Refer to
'Tne-rod ,"stallatlo""
, collar
' @,e3
14.20)
be careful not to damage rack packing inner tube anernblong" (91 (2.0.2.7.
I.
Rad. and inner tubearrrnblmg
pjl N m (kgm. ft-lb)
Greaseup winti
e] Lubrication points
@ Donot reuse a
ST-8

POWER STEERING GEAR AND LINKAGE
Disassembly and Assembly (Cont'd)
0 Refer to "Tie-rod inner socket installation",
"Tie-rod installation", and "Rack stroke"
-
ASSEMBLY
Before starting work, thoroughly clean all parts
in cleaning solvent or automatic transmission
fluid "Dexron Type" and blow dry with com-
pressed air,
if available
Do not reuse old oil seal, packing and O-ring
Always
install new ones
When installing oil
seals, use suitable tool
SST548
When installing cylinder end housing or rear
housing cover, wrap cellophane tape around
rack end
or pinion serrations to prevent oil seal
from being damaged
Cylmder end housing (Apply a coat of automatrc transmission fluid "Oexron Type" to 081 seal mating surface I
rCellophane tape
a- - Rack
Rear housng cover IA~ply a coat of automatic transmission fluid "Dexron Type" to 011 seal mating
SSTZlOA
Apply oil to O-rings as well as frictional sur.
faces of oil
seals and packings
Refer to "Rack and inner tube assembling" v
2. Assemble rack & inner tube assembly,
cylinder, cylinder end housing and pinion
housina.
I 0 Be careful not to damage oil seal
0 Pay attention to dlrection for the cylinder end
housing and pinion housing to prevent undue
stress from being applied to hydraulic pipes
0 Cylinder end housing and pinion housing lock
nut
p1 78-108Nm
(8 0 . 11.0 kg-m, 58 - 80 ft-lb)
Refer to "Cylinder end housing and pinion
housing lock nut tightening"
4. Install pinion complete and rear housing
complete.
I
0 Be careful not to damage oil seal
0 After adjusting pinion preload, tighten real
housing cover lock nut
p1 78 - 137 N.m
(8 - 14 kg-m, 58. 101 ft-lbl
Rear housing cover lock nut.
Refer to "Pinion preload adjustment"
5. Install retainer assembly.
force adjusted to specifications
Refer to "Retainer adjustment"
6. Check rack for smooth movement over its
entire stroke, without binding and noise. I
7. Install hydraulic piping and breather hose.
ST- 1 0

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