Infiniti I30 A33 (2000) Service Manual – STEERING SYSTEM

STEERING SYSTEM
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PRECAUTIONS ...............................................................2
Supplemental Restraint System (SRS) AIR
BAGand SEAT BELT PRE-TENSIONER...............2
Precautions for Steering System.................................2
PREPARATION ...............................................................3
Commercial Service Tool.............................................4
NOISE, VIBRATION AND HARSHNESS (NVH)
TROUBLESHOOTING.....................................................5
NVH Troubleshooting Chart.........................................5
ON-VEHICLE SERVICE ..................................................6
Checking Steering Wheel Play....................................6
Checking Neutral Position on Steering Wheel............6
PRE-CHECKING CHECKING
Front Wheel Turning Angle..........................................6
Checking Gear Housing Movement ............................6
Checking and Adjusting Drive Belts ............................7
Checking Fluid Level...................................................7
Bleeding Hydraulic System..........................................7
Checking Steering Wheel Turning Force ....................8
Checking Hydraulic System.........................................9
STEERING WHEEL AND STEERING COLUMN .........10
Components...............................................................10
Removal and Installation...........................................10
STEERING WHEEL STEERING COLUMN
........................................................6
...............................................................6
.................................................10
...............................................11
CONTENTS
Disassembly and Assembly.......................................13
Inspection...................................................................14
TILT MECHANISM
POWER STEERING GEAR AND LINKAGE ................15
Components...............................................................15
Removal and Installation...........................................16
Disassembly...............................................................18
Inspection...................................................................19
BOOT RACK GEAR SUB-ASSEMBLY GEAR HOUSING CYLINDER TIE-ROD OUTER AND INNER SOCKETS
Assembly ...................................................................20
Adjustment.................................................................23
POWER STEERING OIL PUMP....................................25
Components...............................................................25
Pre-disassembly Inspection.......................................25
Disassembly...............................................................26
Inspection...................................................................27
Assembly ...................................................................27
SERVICE DATA AND SPECIFICATIONS (SDS).........29
Steering Wheel..........................................................29
Steering Column........................................................29
Steering Gear and Linkage .......................................30
Power Steering..........................................................31
SECTION
...................................................14
.....................................................................19
.....................................................................19
ST
...........................................19
....................................19
..................19
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PRECAUTIONS

Supplemental Restraint System (SRS) “AIR BAG” and “SEAT BELT PRE-TENSIONER”
Supplemental Restraint System (SRS) “AIR BAG” and “SEAT BELT PRE-TENSIONER”
The Supplemental Restraint System such as “AIR BAG” and “SEAT BELTPRE-TENSIONER” used along with a seat belt, helps to reduce the risk or severity of injury to the driver and front passenger for certain types of collision. The SRS system composition which is available to INFINITI I30 is as follows:
I For a frontal collision
The Supplemental Restraint System consists of driver air bag module (located in the center of the steer­ing wheel), front passenger air bag module (located on the instrument panel on passenger side), seat belt pre-tensioners, a diagnosis sensor unit, warning lamp, wiring harness and spiral cable.
I For a side collision
The Supplemental Restraint System consists of front side air bag module (located in the outer side of front seat), satellite sensor, diagnosis sensor unit (one of components of air bags for a frontal collision), wiring harness, warning lamp (one of components of air bags for a frontal collision).
Information necessary to service the system safely is included in the RS section of this Service Manual.
WARNING:
I To avoid rendering the SRS inoperative, which could increase the risk of personal injury or death
in the event of a collision which would result in air bag inflation, all maintenance should be per­formed by an authorized INFINITI dealer.
I Improper maintenance, including incorrect removal and installation of the SRS, can lead to per-
sonal injury caused by intentional activation of the system. For removal of Spiral Cable and Air Bag Module, see the RS section.
I Do not use electrical test equipment on any circuit related to the SRS unless instructed to in this
Service Manual. Spiral cable and wiring harnesses covered with yellow insulation tape either just before the harness connectors or for the complete harness are related to the SRS.
NHST0001

Precautions for Steering System

I Before disassembly, thoroughly clean the outside of the unit. I Disassembly should be done in a clean work area. It is important to prevent the internal parts from
becoming contaminated by dirt or other foreign matter.
I Place disassembled parts in order, on a parts rack, for easier and proper assembly. I Use nylon cloths or paper towels to clean the parts; common shop rags can leave lint that might
interfere with their operation.
I Before inspection or reassembly, carefully clean all parts with a general purpose, non-flammable
solvent.
I Before assembly, apply a coat of recommended power steering fluid* to hydraulic parts. Vaseline
may be applied to O-rings and seals. Do not use any grease.
I Replace all gaskets, seals and O-rings. Avoid damaging O-rings, seals and gaskets during instal-
lation. Perform functional tests whenever designated. *: Genuine Nissan PSF II or equivalent. Refer to MA-11, “Fluids and Lubricants”.
NHST0003
ST-2

PREPARATION

Special Service Tools

Special Service Tools
The actual shapes of Kent-Moore tools may differ from those of special service tools illustrated here.
Tool number (Kent-Moore No.) Tool name
KV48100700 (J26364) Torque adapter
KV48102500 (J33914) Pressure gauge adapter
ST27180001 (J25726-A) Steering wheel puller
Description
Measuring pinion rotating torque
NT169
Measuring oil pressure
NT542
Removing steering wheel
NHST0004
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NT544
HT72520000 (J25730-B) Ball joint remover
NT546
KV48103500 (J26357 and J26357-
10) Pressure gauge
NT547
KV48104400 (—) Rack seal ring reformer
NT550
Removing ball joint
a: 33 mm (1.30 in) b: 50 mm (1.97 in) r: R11.5 mm (0.453 in)
Measuring oil pressure
Reforming teflon ring
a: 50 mm (1.97 in) dia. b: 36 mm (1.42 in) dia. c: 100 mm (3.94 in)
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ST-3
Special Service Tools (Cont’d)
Tool number (Kent-Moore No.) Tool name
Description
PREPARATION
ST3127S000 1 GG91030000 (See J25765-A) Torque wrench 2 HT62940000 (—) Socket adapter 3 HT62900000 (—) Socket adapter
Tool number Description Oil pump attachment
NT541
NT774
Measuring turning torque

Commercial Service Tool

Disassembling and assembling oil pump Unit: mm (in)
NHST0005
ST-4
×: Applicable
Judder × × ЧЧЧЧЧ
Symptom STEERING
Vibration ЧЧЧЧЧ ××××
Shimmy ××× × ЧЧЧЧЧ
Noise ЧЧЧЧЧЧЧЧЧ ЧЧЧЧЧЧ
Shake ××× ЧЧЧЧЧЧ
Use the chart below to help you find the cause of the symptom. If necessary, repair or replace these parts.
Possible cause and
SUSPECTED PARTS
Reference page

NOISE, VIBRATION AND HARSHNESS (NVH) TROUBLESHOOTING

ST-5
Fluid level Air in hydraulic system Tie-rod ball joint swinging force Tie-rod ball joint rotating torque Tie-rod ball joint end play Steering gear fluid leakage Steering wheel play Steering gear rack sliding force Drive belt looseness Improper steering wheel Improper installation or looseness or tilt lock lever Mounting rubber deterioration Steering column deformation or damage Improper installation or looseness of steering column Steering linkage looseness DRIVE SHAFT AXLE SUSPENSION TIRES ROAD WHEEL BRAKES
ST-7
ST-7 ST-19 ST-19 ST-19
ST-7
ST-6
ST-8
MA-13
ST-10
ST-6 ST-14 ST-13 ST-15
AX-3
AX-3
SU-4 SU-4 SU-4 BR-7

NVH Troubleshooting Chart

NVH Troubleshooting Chart
NHST0006S01
NHST0006
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Checking Steering Wheel Play

ON-VEHICLE SERVICE

SST489B
SST490BA
Checking Steering Wheel Play
NHST0007
I With wheels in a straight-ahead position, check steering wheel
play.
Steering wheel play:
35 mm (1.38 in) or less
I If it is not within specification, check the following for loose or
worn components.
Steering gear assembly Steering column Front suspension and axle

Checking Neutral Position on Steering Wheel

PRE-CHECKING

NHST0008
NHST0008S01
I Make sure that wheel alignment is correct.
Wheel alignment:
Refer to SU-16, SDS.
I Verify that the steering gear is centered before removing the
steering wheel.

CHECKING

NHST0008S02
1. Check that the steering wheel is in the neutral position when driving straight ahead.
2. If it isnot in the neutral position, remove the steeringwheel and reinstall it correctly.
3. If the neutral position is between two teeth, loosen tie-rod lock nuts. Turn the tie-rods by the same amount in opposite direc­tions on both left and right sides.
SMA127
SST849C

Front Wheel Turning Angle

NHST0009
1. Rotate steering wheel all the way right and left; measure turn­ing angle.
Turning angle of full turns:
Refer to SU-16, SDS.
2. If it is not within specification, check rack stroke.
Rack stroke “S”:
Refer to SDS, ST-30.

Checking Gear Housing Movement

NHST0010
1. Check the movement of steering gear housing during station­ary steering on a dry paved surface.
I Apply a force of 49 N (5 kg, 11 lb) to steering wheel to check
the gear housing movement. Turn off ignition key while checking.
Movement of gear housing:
±2mm(±0.08 in) or less
2. If movement exceeds the limit, replace mount insulator after confirming proper installation of gear housing clamps.
ST-6
ON-VEHICLE SERVICE

Checking and Adjusting Drive Belts

SST850C
SST851C
Checking and Adjusting Drive Belts
Refer to MA-13, “Checking Drive Belts”.

Checking Fluid Level

Check fluid level, referring to the scale on reservoir tank. Use “HOT” range for fluid temperatures of 50 to 80°C (122 to 176°F). Use “COLD” range for fluid temperatures of 0 to 30°C (32 to 86°F).
CAUTION:
I Do not overfill. I Recommended fluid is Genuine Nissan PSF II or equiva-
lent. Refer to MA-11, “Fluids and Lubricants”.

Checking Fluid Leakage

Check the lines for improper attachment and for leaks, cracks, damage, loose connections, chafing and deterioration.
1. Run engine between idle speed and 1,000 rpm.
Make sure temperature of fluid in oil tank rises to 60 to 80°C (140 to 176°F).
2. Turn steering wheel right-to-left several times.
3. Hold steering wheel at each “lock” position for five seconds and carefully check for fluid leakage.
CAUTION:
Do not hold the steering wheel in a locked position for more than 15 seconds.
4. If fluid leakage at connectors is noticed, loosen flare nut and then retighten.
Do not overtighten connector as this can damage O-ring, washer and connector.
5. If fluid leakage from power steering pump is noticed, check power steering pump. Refer to ST-25.
6. Check rack boots for accumulation of power steering fluid.
NHST0011
NHST0012
NHST0013
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Bleeding Hydraulic System

1. Raise front end of vehicle until wheels are clear of the ground.
2. Add fluid into oil tank to specified level. Then quickly turn steer­ing wheel fully to right and left and lightly touch steering stop­pers. Repeat steering wheel operation until fluid level no longer decreases.
3. Start engine. Repeat step 2. above.
I Incomplete air bleeding will cause the following to occur. When
this happens, bleed air again.
NHST0014
ST-7
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Bleeding Hydraulic System (Cont’d)
ON-VEHICLE SERVICE
a) Air bubbles in reservoir tank b) Clicking noise in oil pump c) Excessive buzzing in oil pump Fluid noise may occur in the valve or oil pump. This is common
when the vehicle is stationary or while turning the steering wheel slowly. This does not affect the performance or durability of the system.
SST491B
SST090B

Checking Steering Wheel Turning Force

NHST0015
1. Park vehicle on a level, dry surface and set parking brake.
2. Start engine.
3. Bring power steering fluid up to adequate operating tempera­ture. [Make sure temperature of fluid is approximately 60 to 80°C (140 to 176°F).]
Tires need to be inflated to normal pressure.
4. Check steering wheel turning force when steering wheel has been turned 360° from the neutral position.
Steering wheel turning force:
39 N (4 kg, 9 lb) or less
5. If steering wheel turning force is out of specification, check rack sliding force.
a. Disconnect steering column lower joint and knuckle arms from
the gear.
b. Start and run engine at idle to make sure steering fluid has
reached normal operating temperature.
c. Pull tie-rod slowly to move it from neutral position to ±11.5 mm
(±0.453 in) at speed of 3.5 mm (0.138 in)/s. Check that rack sliding force is within specification.
Average rack sliding force:
216 - 284 N (22 - 29 kg, 49 - 64 lb)
Maximum force deviation:
98 N (10 kg, 22 lb)
d. Check sliding force outside the above range at rack speed of
40 mm (1.75 in)/s.
Rack sliding force:
Not more than 294 N (30 kg, 66 lb)
Maximum force deviation:
147 N (15 kg, 33 lb)
6. If rack sliding force is not within specification, overhaul steer­ing gear assembly.
7. If rack sliding force is OK, inspect steering column. Refer to ST-13.
ST-8
ON-VEHICLE SERVICE

Checking Hydraulic System

SST834-F
Checking Hydraulic System
Before starting, check belt tension, driving pulley and tire pressure.
1. Set Tool. Open shut-off valve. Then bleed air. Refer to “Bleed­ing Hydraulic System”, ST-7.
2. 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).
WARNING:
Warm up engine with shut-off valve fully opened. If engine is started with shut-off valve closed, fluid pressure in oil pump increases to maximum. This will raise oil temperature abnor­mally.
3. Check pressure with steering wheel fully turned to leftand right positions with engine idling at 1,000 rpm.
CAUTION:
Do not hold the steering wheel in a locked position for more than 15 seconds.
Oil pump maximum standard pressure:
8,140 - 8,728 kPa (83 - 89 kg/cm
I If pressure reaches maximum operating pressure, system is
OK.
I If pressure increases above maximum operating pressure,
check power steering pump flow control valve. Refer to ST-25.
4. If power steering pressure is below the maximum operating pressure, slowly close shut-off valve and check pressure again.
CAUTION:
Do not close shut-off valve for more than 15 seconds.
I If pressure increases to maximum operating pressure, gear is
damaged. Refer to “Removal and Installation”, ST-16.
I If pressure remains below maximum operating pressure, pump
is damaged. Refer to “Disassembly”, ST-26.
5. After checking hydraulic system, remove Tool and add fluid as necessary. Then completely bleed air out of system. Refer to ST-7.
2
, 1,180 - 1,266 psi)
NHST0016
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Components

STEERING WHEEL AND STEERING COLUMN

Components
NHST0017
1. Air bag module
2. Damper
3. Steering wheel
4. Spiral cable
5. Column cover
6. Combination switch
7. Steering column assembly
8. Boot
9. Clip
10. Lower joint
CAUTION:
I The rotation of the spiral cable (SRS “Air bag” component
part) is limited. If the steering gear must be removed, set the front wheels in the straight-ahead direction. Do not rotate the steering column while the steering gear is removed.
I Remove the steering wheel before removing the steering
lower joint to avoid damaging the SRS spiral cable.

Removal and Installation

STEERING WHEEL

I Remove air bag module and spiral cable.
Refer to RS-20, “Removal —Air BagModuleand Spiral Cable”.
SST852C
NHST0018
NHST0018S01
SBF812E
ST-10
STEERING WHEEL AND STEERING COLUMN
Removal and Installation (Cont’d)
I Align spiral cable correctly when installing steering wheel. a) Set the front wheels in the straight-ahead position. b) Make sure that the spiral cable is in the neutral position.
The neutral position is detected by turning left 2.5 revolutions from the right end position. Align the two marks (
CAUTION:
The spiral cable may snap due to steering operation if the cable is installed in an improper position. Also, with the steering linkage disconnected, the cable may snap by turning the steering wheel beyond the limited number of turns. (The spiral cable can be turned up to 2.5 turns from the neutral position to both the right and left.)
).
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SRS266
SST853C
SST329C
I Remove damper for steering wheel. I Remove steering wheel with Tool.

STEERING COLUMN

I Remove key interlock cable.
I When installing steering column, fingertighten all lower bracket
and clamp retaining bolts; then tighten them securely. Do not apply undue stress to steering column.
I When attaching coupling joint, be sure tightening bolt faces
cutout portion.
NHST0018S02
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SST800A
ST-11
STEERING WHEEL AND STEERING COLUMN
Removal and Installation (Cont’d)
I Align slit of lower joint with projection on dust cover. Insert joint
until surface A contacts surface B.
CAUTION:
After installation, turn steering wheel to make sure it moves smoothly. Ensure the number of turns are the same from the straight forward position to left and right locks. Be sure that the steering wheel is in a neutral position when driving straight ahead.
SST491C
ST-12
STEERING WHEEL AND STEERING COLUMN

Disassembly and Assembly

Disassembly and Assembly
=NHST0019
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1. Combination switch
2. Lock nut
3. Jacket tube assembly
4. Tilt lever
5. Tilt lever stopper
6. Steering column mounting bracket
7. Spring
8. Adjust bolt
9. Adjust bolt stopper
I When disassembling and assembling, unlock steering lock
with key.
I Remove combination switch. I Install lock nut on steering column shaft and tighten the nut.
10. Nut
11. Column shaft assembly
12. Steering column lower cover
13. Lower joint
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SST490C
ST-13
STEERING WHEEL AND STEERING COLUMN
Disassembly and Assembly (Cont’d)
I Steering lock a) Break self-shear type screws with a drill or other appropriate
tool.
SST741A
b) Install new self-shear type screws and then cut off self-shear
type screw heads.
SST742A
SST855C

Inspection

NHST0020
I When steering wheel does not turn smoothly, check the steer-
ing column as follows and replace damaged parts.
a) Check column bearings for damage or unevenness. Lubricate
with recommended multi-purpose grease or replace steering column as an assembly, if necessary.
b) Check jacket tube for deformation or breakage. Replace if
necessary.
I When the vehicle comes into a light collision, check length “L”.
Steering column length “L”:
542 - 544 mm (21.34 - 21.42 in)
If out of the specifications, replace steering column as an assem­bly.
SST582B

TILT MECHANISM

NHST0020S01
I After installing steering column, check tilt mechanism opera-
tion.
ST-14

POWER STEERING GEAR AND LINKAGE

Components

Components
NHST0021
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1. Rear cover cap
2. Gear sub-assembly
3. O-ring
4. Shim
5. Lock nut
6. Adjusting screw
7. Spring
8. Diaphragm spring
9. Washer
10. Spring seat
11. Retainer
12. Gear housing
13. Center bushing
14. Rack oil seal
15. Rack assembly
16. Rack seal ring
17. O-ring
18. Rack oil seal
19. End cover assembly
20. Boot band
21. Dust boot
22. Boot band
23. Spacer ring
24. Lock plate
25. Tie-rod inner socket
26. Tie-rod outer socket
27. Cotter pin
28. Gear housing tube
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SST856C
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ST-15

Removal and Installation

POWER STEERING GEAR AND LINKAGE
Removal and Installation
NHST0022
1. Lower joint
2. Hole cover
3. Insulator bracket
4. Clamp
5. Rear cover cap
6. Gear and linkage assembly
7. Rack mounting insulator
SST857C
8. Gear housing mounting bracket
9. Cotter pin
10. Heat insulator
ST-16
POWER STEERING GEAR AND LINKAGE
Removal and Installation (Cont’d)
CAUTION:
I The rotation of the spiral cable (SRS “Air bag” component
part) is limited. If the steering gear must be removed, set the front wheels in the straight-ahead direction. Do not rotate the steering column while the steering gear is removed.
I Remove the steering wheel before removing the steering
lower joint to avoid damaging the SRS spiral cable.
I Detach tie-rod outer sockets from knuckle arms with Tool.
1. Remove front exhaust tube. Refer to FE-11, “Removal and
SFA455BC
Installation”.
2. Set a suitable transmission jack under transaxle.
3. Remove center member and rear engine mounting. Refer to EM-57, “Removal”.
4. Remove front stabilizer bar. Refer to SU-12, “Removal and Installation”.
5. Remove steering gear assembly.
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SST858C
SST859C
I Install pipe connector. I Observe specified tighteningtorque when tighteninghigh-pres-
sure and low-pressure pipe connectors. Excessive tightening will damage threads of connector or O-ring.
Connector tightening torque:
1 Low-pressure side
27 - 39 N·m (2.8 - 4.0 kg-m, 20 - 29 ft-lb)
2 High-pressure side
15 - 25 N·m (1.5 - 2.5 kg-m, 11 - 18 ft-lb)
I The O-ring in low-pressure pipe connector is larger than that
in high-pressure connector. Take care to install the proper O-ring.
I Initially, tighten nut on tie-rod outer socket and knuckle arm to
29 to 39 N·m (3 to 4 kg-m, 22 to 29 ft-lb). Then tighten further to align nut groove with first pin hole so that cotter pin can be installed.
CAUTION:
Tightening torque must not exceed 49 N·m (5 kg-m, 36 ft-lb).
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SST824A
ST-17
POWER STEERING GEAR AND LINKAGE
Removal and Installation (Cont’d)
I Before removing lower joint from gear, set gear in neutral
(wheels in straight-ahead position). After removing lower joint, put matching mark on pinion shaft and pinion housing to record neutral position.
I To install, set left and right dust boots to equal deflection.
Attach lower joint by aligning matching marks of pinion shaft and pinion housing.
SST860C
I Tighten gear housing mounting bracket bolts in the order
shown.
SST861C
SST862C
SST051C

Disassembly

NHST0023
1. Prior to disassembling, measure pinion rotating torque. Record the pinion rotating torque as a reference.
I Before measuring, disconnect gear housing tube and
drain fluid.
I Use soft jaws when holding steering gear housing. Handle
gear housing carefully, as it is made of aluminum. Do not grip cylinder in a vise.
2. Remove gear sub-assembly, O-ring and shim.
Gear sub-assembly cannot be disassembled. If it is faulty, replace with a new one.
3. Remove tie-rod outer sockets and boots.
4. Loosen tie-rod inner socket by prying up staked portion, and remove socket and spacer.
5. Remove retainer.
6. Usea2to2.5mm(0.079 to 0.098 in) diameter drill to com­pletely remove staked portion of gear housing end.
7. Remove end cover assembly with a suitable tool.
8. Draw out rack assembly.
9. Remove rack seal ring.
I Using a heat gun, heat rack seal to approximately 40°C
(104°F).
I Remove rack seal ring.
Be careful not to damage rack.
SST052C
ST-18
POWER STEERING GEAR AND LINKAGE
10. Remove center bushing and rack oil seal using tape wrapped socket and extension bar.
Do not scratch inner surfaces of pinion housing.
SST472A
Disassembly (Cont’d)
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SST468C

Inspection

Thoroughly clean all parts in cleaning solvent or Genuine NISSAN PSF II or equivalent. Blow dry with compressed air, if available.

BOOT

I Check condition of boot. If cracked excessively, replace it. I Check boots for accumulation of power steering fluid.

RACK

Thoroughly examine rack gear. If damaged, cracked or worn, replace it.

GEAR SUB-ASSEMBLY

I Check pinion gear. If it is worn or damaged, replace as a gear
sub-assembly.
I Manually spin bearing. If torque variations or free play are
noted, replace as a gear sub-assembly.

GEAR HOUSING CYLINDER

Check gear housing cylinder bore for scratches or other damage. Replace if necessary.

TIE-ROD OUTER AND INNER SOCKETS

I Check ball joints for swinging force.
Tie-rod outer and inner ball joints swinging force “A”:
Refer to SDS, ST-30.
I Check ball joint for rotating torque.
Tie-rod outer ball joint rotating torque “B”:
Refer to SDS, ST-30.
I Check ball joints for axial end play.
Tie-rod outer and inner ball joints axial end play “C”:
Refer to SDS, ST-30.
I Check condition of dust cover. If cracked excessively, replace
outer tie-rod.
NHST0024
NHST0024S01
NHST0024S02
NHST0024S03
NHST0024S04
NHST0024S05
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ST-19

Assembly

POWER STEERING GEAR AND LINKAGE
SST083B
SST885BB
Assembly
NHST0025
1. Using a heat gun, heat new teflon rack seal ring to approxi­mately 40°C (104°F). Then place it onto rack.
2. Using Tool, compress rack seal ring securely onto rack.
Always insert Tool from the rack gear side.
3. Insert new rack oil seal.
I Place plastic film into rack oil seal to prevent damage by
rack teeth.
I Do not forget to remove plastic film after rack oil seal is
positioned properly.
I Make sure lips of rack oil seal face each other.
SST201A
4. Install center bushing and rack oil seal with rack assembly.
SST863C
5. Insert rack oil seal and end cover assembly to rack. Then tighten end cover assembly.
SST321B
ST-20
POWER STEERING GEAR AND LINKAGE
6. Fasten end cover assembly to gear housing by staking.
SST073B
7. Set rack gear in neutral position.
Rack stroke “S”:
Refer to SDS, ST-30.
Assembly (Cont’d)
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SST086BA
SST864C
SST865C
8. Install adjustment shims and O-rings to gear sub-assembly.
I Install the same number of adjustment shims as before,
regardless of whether or not gear sub-assembly is replaced.
I Discard old O-rings; replace with new ones.
9. Tighten gear subassembly securing bolts to specified tighten­ing torque.
10. Ensure that the rack is centered. Install rear cover cap so that its protrusion is positioned as shown in figure.
11. Install diaphragm spring into gear housing.
I Always install retainer, spring washer and diaphragm spring in
that order.
I Make sure convex end (painted white) of diaphragm spring
faces outward when installing.
12. Install spring seat retainer spring and adjusting screw tempo­rarily.
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SST087B
ST-21
Assembly (Cont’d)
POWER STEERING GEAR AND LINKAGE
13. Install lock plate to rack.
a. Temporarily install spacer ring to rack.
Discard old spacer ring; replace with a new one.
b. Install lock plate to inner socket.
Discard old lock plate; replace with a new one.
c. Apply a coat of locking sealant to inner socket threads. Screw
inner socket into rack and tighten to specified torque.
d. Clinch lock plate at rack groove location (at two points). e. Install spacer ring to lock plate as shown in the Figure at left.
SST866C
Be careful not to damage spacer ring during installation
14. Tighten outer socket lock nut.
Tie-rod length “L”:
Refer to SDS, ST-30.
SST867C
15. Measure rack stroke.
Rack stroke “S”:
Refer to SDS, ST-30.
SST086BA
16. Before installing boot, coat the contact surfaces between boot and tie-rod with grease.
SST967A
17. Install boot bands.
I Securely install boot band to boot groove and clinch the root
section of the trapezoidal area.
I Make sure thatthere is a clearance of 3.5 mm (0.138 in) or less
at the clinched section of the boot band. Refer to the Figure at left.
SST868C
ST-22
POWER STEERING GEAR AND LINKAGE
I After installing gear in vehicle, make sure that the clinched
section of boot band is positioned toward the rear of vehicle (to prevent interference with adjacent parts).
SST869C
Assembly (Cont’d)
GI
MA
EM
SST719C
SST862C

Adjustment

Adjust pinion rotating torque as follows:
1. Set rack to the neutral position without fluid in the gear.
2. Coat the adjusting screw with locking sealant and screw it in.
3. Lightly tighten lock nut.
4. Tighten adjusting screw to a torque of 4.9 to 5.9 N·m (50 to 60 kg-cm, 43 to 52 in-lb).
5. Loosen adjusting screw, then retighten it to 0.2 N·m (2 kg-cm,
1.7 in-lb).
6. Move rack over its entire stroke several times.
7. Measure pinion rotating torque within the range of 180° from neutral position. Stop the gear at the point of maximum torque.
8. Loosen adjusting screw, then retighten it to 4.9 N·m (50 kg-cm, 43 in-lb).
9. Loosen adjusting screw by 60° to 80°.
10. Prevent adjusting screw from turning, and tighten lock nut to specified torque.
NHST0026
LC
EC
FE
AT
AX
SU
BR
RS
BT
SST713C
SST090B
11. Check rack sliding force on vehicle as follows:
a. Install steering gear onto vehicle, but do not connect tie-rod to
knuckle arm.
b. Connect all piping and fill with steering fluid. c. Start engine and bleed air completely. d. Disconnect steering column lower joint from the gear. e. Keep engine at idle and make sure steering fluid has reached
normal operating temperature.
f. Pull tie-rod slowly to move it from neutral position to ±11.5 mm
(±0.453 in) at speed of 3.5 mm (0.138 in)/s. Check that rack sliding force is within specification.
ST-23
HA
SC
EL
IDX
Adjustment (Cont’d)
POWER STEERING GEAR AND LINKAGE
Average rack sliding force:
216 - 284 N (22 - 29 kg, 49 - 64 lb)
Maximum force deviation:
98 N (10 kg, 22 lb)
g. Check sliding force outside above range at rack speed of 40
mm (1.57 in)/s.
Maximum rack sliding force:
294 N (30 kg, 66 lb)
Maximum force deviation:
147 N (15 kg, 33 lb)
I If rack sliding force is not within specification, readjust by
repeating adjustment procedure from the beginning.
I If rack sliding force is still out of specification after
readjustment, gear assembly needs to be replaced.
ST-24

POWER STEERING OIL PUMP

Components

Components
NHST0027
GI
MA
EM
LC
EC
FE
AT
AX
1. Pulley
2. Snap ring
3. Drive shaft
4. Oil seal
5. Bracket
6. Front housing
7. O-ring
8. O-ring
9. Front side plate
10. Vane
11. Rotor
12. Pin
13. Cam ring
14. Gasket
15. Rear housing
16. O-ring
17. Suction pipe
18. Spring
19. Flow control valve
20. Washer
21. Joint
22. Connector
23. Washer
24. Hose
25. Connector bolt
26. Adjusting bracket
27. Adjusting bolt
28. Lock bolt

Pre-disassembly Inspection

Disassemble the power steering oil pump only if the following items are found.
I Oil leak from any point shown in the figure I Deformed or damaged pulley I Poor performance
SU
BR
SST870C
RS
BT
HA
SC
EL
NHST0028
IDX
SST984A
ST-25

Disassembly

POWER STEERING OIL PUMP
Disassembly
NHST0029
CAUTION:
I Parts which can be disassembled are strictly limited.
Never disassemble parts other than those specified.
I Disassemble in as clean a place as possible. I Clean your hands before disassembly. I Do not use rags; use nylon cloths or paper towels. I Follow the procedures and cautions in the Service
Manual.
I When disassembling and reassembling, do not let foreign
matter enter or contact the parts.
I Remove snap ring, then draw drive shaft out.
Be careful not to drop drive shaft.
SST010B
I Remove oil seal.
Be careful not to damage front housing.
SST034A
I Remove connector and flow control valve with spring.
Be careful not to drop flow control valve. Do not disassemble flow control valve.
SST036A
ST-26
POWER STEERING OIL PUMP

Inspection

SST038A
Inspection
I If pulley is cracked or deformed, replace it. I If an oil leak is found around pulley shaft oil seal, replace the
seal.
I If serration on pulley or pulley shaft is deformed or worn,
replace it.

Assembly

Assemble oil pump, noting the following instructions.
I Make sure O-rings and oil seal are properly installed. I Always install new O-rings and oil seal. I Be careful of oil seal direction. I Cam ring, rotor and vanes must be replaced as a set if neces-
sary.
I Coat each part with Genuine Nissan PSF II or equivalent when
assembling.
I Pay attention to the direction of rotor.
NHST0030
NHST0031
GI
MA
EM
LC
EC
FE
AT
AX
SST289A
SST843A
I When assembling vanes to rotor, rounded surfaces of vanes
must face cam ring side.
SU
BR
RS
BT
HA
SC
EL
IDX
ST-27
Assembly (Cont’d)
POWER STEERING OIL PUMP
I Insert pin 2 into pin groove 1 of front housing and front side
plate. Then install cam ring 3 as shown at left.
Cam ring:
D
is less than D2.
1
SST472C
ST-28

SERVICE DATA AND SPECIFICATIONS (SDS)

General Specifications

General Specifications
Power steering
Steering model
15 or 16 inch tire 17 inch tire Steering gear type PR26AD Steering overall gear ratio 16.6 Turns of steering wheel (Lock to lock) 2.9 2.6 Steering column type Collapsible, tilt

Steering Wheel

Steering wheel axial play mm (in) 0 (0) Steering wheel play mm (in) 35 (1.38) or less Movement of gear housing mm (in) ±2(±0.08) or less

Steering Column

Applied model All Steering column length “L” mm (in) 542 - 544 (21.34 - 21.42)
NHST0032
NHST0033
NHST0034
GI
MA
EM
LC
EC
FE
AT
AX
SU
BR
SST855C
RS
BT
HA
SC
EL
IDX
ST-29

Steering Gear and Linkage

SERVICE DATA AND SPECIFICATIONS (SDS)
Steering Gear and Linkage
Applied model All Steering gear type PR26AD
Swinging force at cotter pin hole: “A” N (kg, lb) 6.5 - 65.7 (0.66 - 6.59, 1.5 - 14.8)
Tie-rod outer ball joint
Tie-rod inner ball joint
Tie-rod standard length “L” mm (in) 193.2 (7.606) *: Measuring point [: 172 mm (6.77 in)]
Rotating torque: “B” N·m (kg-cm, in-lb) 0.29 - 2.94 (3.0 - 30.0, 2.6 - 26.0) Axial end play: “C” mm (in) 0.4 (0.016) or less Swinging force*: “A” N (kg, lb) 5.7 - 45.6 (0.58 - 4.65, 1.3 - 10.3) Axial end play: “C” mm (in) 0.2 (0.008) or less
NHST0035
SST867C
Initial tightening torque N·m (kg-cm, in-lb) 4.9 - 5.9 (50 - 60, 43 - 52) Retightening torque after loosening N·m (kg-cm,
Retainer adjustment Adjusting screw
Steering gear type PR26AD
in-lb) Tightening torque after gear has settled N·m
(kg-cm, in-lb) Returning angle degree 60° - 80°
Rack stroke “S” mm (in) 70.5 (2.776)
0.2 (2, 1.7)
4.9 - 5.9 (50 - 60, 43 - 52)
SST086BA
ST-30
SERVICE DATA AND SPECIFICATIONS (SDS)

Power Steering

Power Steering
Applied model All Steering gear type PR26AD
Range within ±11.5 mm (±0.453 in)
Rack sliding force N (kg, lb) Under normal operating oil pres­sure
Steering wheel turning force (Measured at one full turn from the neutral position) N (kg, lb)
Fluid capacity (Approximate) (US qt, Imp qt) 1.0 (1-1/8, 7/8)
Oil pump maximum pressure kPa (kg/cm
from the neutral position at rack speed of 3.5 mm (0.138 in)/s
Except for the above range
2
, psi)
Average force 216 - 284 (22 - 29, 49 - 64) Maximum force deviation 98 (10, 22) Maximum sliding force 294 (30, 66)
Maximum force deviation 147 (15, 33)
39 (4, 9) or less
8,140 - 8,728 (83 - 89, 1,180 -
1,266)
NHST0036
GI
MA
EM
LC
EC
FE
AT
AX
SU
BR
RS
BT
HA
SC
EL
IDX
ST-31
NOTES
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