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:
IFor 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.
IFor 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:
ITo 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.
IImproper 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.
IDo 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
IBefore disassembly, thoroughly clean the outside of the unit.
IDisassembly 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.
IPlace disassembled parts in order, on a parts rack, for easier and proper assembly.
IUse nylon cloths or paper towels to clean the parts; common shop rags can leave lint that might
interfere with their operation.
IBefore inspection or reassembly, carefully clean all parts with a general purpose, non-flammable
solvent.
IBefore 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.
IReplace 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)
Disassembling and assembling oil pump
Unit: mm (in)
NHST0005
ST-4
×: Applicable
Judder××ЧЧЧЧЧ
SymptomSTEERING
VibrationЧЧЧЧЧ××××
Shimmy××××ЧЧЧЧЧ
NoiseЧЧЧЧЧЧЧЧЧЧЧЧЧЧЧ
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
IWith wheels in a straight-ahead position, check steering wheel
play.
Steering wheel play:
35 mm (1.38 in) or less
IIf 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
IMake sure that wheel alignment is correct.
Wheel alignment:
Refer to SU-16, SDS.
IVerify 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.
IApply 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:
IDo not overfill.
IRecommended 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.
IIncomplete air bleeding will cause the following to occur. When
this happens, bleed air again.
NHST0014
ST-7
EL
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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
IIf pressure reaches maximum operating pressure, system is
OK.
IIf 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.
IIf pressure increases to maximum operating pressure, gear is
damaged. Refer to “Removal and Installation”, ST-16.
IIf 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:
IThe 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.
IRemove the steering wheel before removing the steering
lower joint to avoid damaging the SRS spiral cable.
Removal and Installation
STEERING WHEEL
IRemove 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)
IAlign 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
IRemove damper for steering wheel.
IRemove steering wheel with Tool.
STEERING COLUMN
IRemove key interlock cable.
IWhen installing steering column, fingertighten all lower bracket
and clamp retaining bolts; then tighten them securely. Do not
apply undue stress to steering column.
IWhen 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)
IAlign 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
IWhen disassembling and assembling, unlock steering lock
with key.
IRemove combination switch.
IInstall lock nut on steering column shaft and tighten the nut.
10. Nut
11. Column shaft assembly
12. Steering column lower cover
13. Lower joint
SU
SST854CA
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SST490C
ST-13
STEERING WHEEL AND STEERING COLUMN
Disassembly and Assembly (Cont’d)
ISteering 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
IWhen 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.
IWhen 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.
IThe 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.
IRemove the steering wheel before removing the steering
lower joint to avoid damaging the SRS spiral cable.
IDetach 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
IInstall pipe connector.
IObserve 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)
IThe O-ring in low-pressure pipe connector is larger than that
in high-pressure connector. Take care to install the proper
O-ring.
IInitially, 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)
IBefore 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.
ITo install, set left and right dust boots to equal deflection.
Attach lower joint by aligning matching marks of pinion shaft
and pinion housing.
SST860C
ITighten 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.
IBefore measuring, disconnect gear housing tube and
drain fluid.
IUse 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.
IUsing a heat gun, heat rack seal to approximately 40°C
(104°F).
IRemove 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
ICheck condition of boot. If cracked excessively, replace it.
ICheck boots for accumulation of power steering fluid.
RACK
Thoroughly examine rack gear. If damaged, cracked or worn,
replace it.
GEAR SUB-ASSEMBLY
ICheck pinion gear. If it is worn or damaged, replace as a gear
sub-assembly.
IManually 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
ICheck ball joints for swinging force.
Tie-rod outer and inner ball joints swinging force “A”:
Refer to SDS, ST-30.
ICheck ball joint for rotating torque.
Tie-rod outer ball joint rotating torque “B”:
Refer to SDS, ST-30.
ICheck ball joints for axial end play.
Tie-rod outer and inner ball joints axial end play “C”:
Refer to SDS, ST-30.
ICheck 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.
IPlace plastic film into rack oil seal to prevent damage by
rack teeth.
IDo not forget to remove plastic film after rack oil seal is
positioned properly.
IMake 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.
IInstall the same number of adjustment shims as before,
regardless of whether or not gear sub-assembly is replaced.
IDiscard 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.
IAlways install retainer, spring washer and diaphragm spring in
that order.
IMake 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.
ISecurely install boot band to boot groove and clinch the root
section of the trapezoidal area.
IMake 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
IAfter 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)
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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
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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
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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)
IIf rack sliding force is not within specification, readjust by
repeating adjustment procedure from the beginning.
IIf 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.
IOil leak from any point shown in the figure
IDeformed or damaged pulley
IPoor performance
SU
BR
SST870C
RS
BT
HA
SC
EL
NHST0028
IDX
SST984A
ST-25
Disassembly
POWER STEERING OIL PUMP
Disassembly
NHST0029
CAUTION:
IParts which can be disassembled are strictly limited.
Never disassemble parts other than those specified.
IDisassemble in as clean a place as possible.
IClean your hands before disassembly.
IDo not use rags; use nylon cloths or paper towels.
IFollow the procedures and cautions in the Service
Manual.
IWhen disassembling and reassembling, do not let foreign
matter enter or contact the parts.
IRemove snap ring, then draw drive shaft out.
Be careful not to drop drive shaft.
SST010B
IRemove oil seal.
Be careful not to damage front housing.
SST034A
IRemove 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
IIf pulley is cracked or deformed, replace it.
IIf an oil leak is found around pulley shaft oil seal, replace the
seal.
IIf serration on pulley or pulley shaft is deformed or worn,
replace it.
Assembly
Assemble oil pump, noting the following instructions.
IMake sure O-rings and oil seal are properly installed.
IAlways install new O-rings and oil seal.
IBe careful of oil seal direction.
ICam ring, rotor and vanes must be replaced as a set if neces-
sary.
ICoat each part with Genuine Nissan PSF II or equivalent when
assembling.
IPay attention to the direction of rotor.
NHST0030
NHST0031
GI
MA
EM
LC
EC
FE
AT
AX
SST289A
SST843A
IWhen 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
IInsert 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 tire17 inch tire
Steering gear typePR26AD
Steering overall gear ratio16.6
Turns of steering wheel (Lock to lock)2.92.6
Steering column typeCollapsible, 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