Nissan Primera User Manual
STEERING SYSTEM
CONTENTS
PRECAUTIONS AND PREPARATION.....................2
Precautions............................................................2
Preparation.............................................................2
PREPARATION .........................................................3
NOISE, VIBRATION AND HARSHNESS (NVH)
TROUBLESHOOTING...............................................4
NVH Troubleshooting Chart...................................4
ON-VEHICLE INSPECTION......................................5
Checking Steering Wheel Play..............................5
Checking Neutral Position on Steering Wheel......5
Front Wheel Turning Angle....................................5
Checking Gear Housing Movement.......................5
Checking and Adjusting Drive Belts......................6
Checking Fluid Level .............................................6
Checking Fluid Leakage........................................6
Bleeding Hydraulic System....................................6
Checking Steering Wheel Turning Force ..............7
Checking Hydraulic System...................................8
STEERING WHEEL AND STEERING COLUMN .....9
Removal and Installation .....................................10
Disassembly and Assembly.................................11
Inspection.............................................................12
SECTION
POWER STEERING GEAR AND LINKAGE ..........14
Removal and Installation .....................................14
Disassembly.........................................................17
Inspection.............................................................17
Assembly..............................................................19
GA16DE
POWER STEERING OIL PUMP ......................20
Pre-disassembly Inspection.................................21
Disassembly.........................................................21
Inspection.............................................................22
Assembly..............................................................22
POWER STEERING OIL PUMP..............................24
CD20T
POWER STEERING OIL PUMP..............................25
POWER STEERING OIL PUMP..............................26
GA16DE, SR20De, CD20T, QG18
SERVICE DATA AND SPECIFICATIONS (SDS)...27
General Specifications.........................................27
Inspection and Adjustment ..................................27
ST
ST
PRECAUTIONS AND PREPARATION
Precautions
Supplemental Restraint System (SRS) ‘‘AIR BAG’’
and ‘‘SEAT BELT PRE-TENSIONER’’
The Supplemental Restraint System ‘‘Air Bag’’ and ‘‘Seat Belt Pre-tensioner’’, used along with a seat belt,
help to reduce the risk or severity of injury to the driver and front passenger in a frontal collision. The
Supplemental Restraint System consists of air bag modules (located in the center of the steering wheel and
on the instrument panel on the passenger side), seat belt pre-tensioners, a diagnosis sensor unit, warning
lamp, wiring harness and spiral cable.
If the vehicle is equipped with side air bag as the Supplemental Restraint System, the side air bag used along
with the seat belt helps to reduce the risk or severity of injury to the driver and front passenger in a side
collision. The side air bag consists of air bag modules (located in the outer side of front seats), satellite
sensor, diagnosis sensor unit (which is one of components of air bags for a frontal collision), wiring harness,
warning lamp (which is one of components of air bags for a frontal collision).
WARNING:
● 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 must be performed by an authorized NISSAN dealer.
● Improper maintenance, including incorrect removal and installation of the SRS, can lead to per-
sonal injury caused by unintentional activation of the system.
● Do not use electrical test equipment on any circuit related to the SRS unless instructed to do so
in this Service Manual. SRS wiring harnesses are covered with yellow insulation (either just
before the harness connectors or for the complete harness), for easy identification.
STEERING SYSTEM
● Before disassembly, thoroughly clean the outside of the unit.
● 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.
● When disassembling parts, be sure to place them in order on a part rack so they can be rein-
stalled in their correct positions.
● Only use nylon cloths or paper towels to clean parts. Do not use rags or other materials contain-
ing lint. Residual debris may damage the system.
● Before inspection or reassembly, carefully clean all parts with a general purpose, non-flammable
solvent.
● Before assembly, apply a coat of recommended ATF* to hydraulic parts. Vaseline may be applied
to O-rings and seals. Do not use any grease.
● Replace all gaskets, seals and O-rings. Avoid damaging O-rings, seals and gaskets during instal-
lation. Perform functional tests whenever designated.
*: Automatic transmission fluid
Preparation
SPECIAL SERVICE TOOL
Tool number
Tool name
ST27180001
Steering wheel puller
Description
Removing and installing steering wheel
NT170
ST-2
PREPARATION
SPECIAL SERVICE TOOLS
Tool number
Tool name
KV48100700
Torque adapter
HT72520000
Ball joint remover
ST27091000
Pressure gauge
KV48102500
Pressure gauge adapter
Description
To
oil pump outlet
Shut-off valve
To control
valve
Measuring pinion rotating torque
Removing ball joint
Measuring oil pressure
Measuring oil pressure
ST3127S000
1
GG91030000
V
Torque wrench
2
HT62940000
V
Socket adapter
3
HT62900000
V
Socket adapter
Measuring turning torque
ST-3
NOISE, VIBRATION AND HARSHNESS (NVH) TROUBLESHOOTING
NVH Troubleshooting Chart
Use the chart below to help you find the cause of the symptom.
If necessary, repair or replace these parts.
Reference page
Possible cause and
SUSPECTED PARTS
Symptom STEERING
X: Applicable
ST-6
ST-6
ST-18
ST-18
ST-19
ST-6
ST-5
ST-7
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 wheel turning force
Noise XXXXXXXXX XXXXX
Shake X X X XXXXX
Vibration XXXXX XXX
Shimmy X X X X XXXX
Judder X X XXXX
—
Refer to MA section.
Drive belt looseness
Improper steering wheel
ST-12
ST-5
Improper installation or looseness of tilt lock lever
Mounting rubber deterioration
ST-13
ST-11
Steering column deformation or damage
Improper installation or looseness of steering column
ST-14
NVH in FA section
Steering linkage looseness
DRIVE SHAFT
NVH in FA, RA section
NVH in FA section
NCH in FA section
AXLE AND SUSPENSION
TIRES
ROAD WHEEL
NVH in BR section
BRAKES
ST-4
OK
NG
ON-VEHICLE INSPECTION
Checking Steering Wheel Play
1. With wheels in a straight-ahead position, check steering
wheel play.
Steering wheel play:
35 mm (1.38 in) or less
2. If it is not within specification, check steering gear assembly
when front suspension and axle, steering gear assembly and
steering column are mounted correctly.
.
SST489B
Checking Neutral Position on Steering Wheel
Pre-checking
● Make sure that wheel alignment is correct.
Wheel alignment:
Refer to SDS in FA section
● Verify that the steering gear is centered before removing the
steering wheel.
Checking
SST490BA
1. Check that the steering wheel is in the neutral position when
driving straight ahead.
2. If it is not in the neutral position, remove the steering wheel
and reinstall it correctly.
3. If the neutral position is between two serrated teeth, loosen
tie-rod lock nut and move tie-rod in the opposite direction by
the same amount on both left and right sides to compensate
for error in the neutral position.
SMA127
.
SST059B
Front Wheel Turning Angle
1. Rotate steering wheel all the way right and left; measure
turning angle.
Turning angle of full turns:
Refer to SDS in FA section
2. If it is not within specification, check rack stroke.
Rack stroke ‘‘S’’:
Refer to SDS (ST-27)
Checking Gear Housing Movement
1. Check the movement of steering gear housing during stationary steering on a dry paved surface.
● 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:
±2 mm (±0.08 in) or less
2. If movement exceeds the limit, replace mount insulator after
confirming correct installation of gear housing clamps.
ST-5
ON-VEHICLE INSPECTION
Checking and Adjusting Drive Belts
Refer to section MA for Drive Belt Inspection.
COLD:
0 - 30°C
(32 - 86°F)
HOT:
50 - 80°C
(122 - 176°F)
NST031
SST681B
Checking Fluid Level
Check fluid level.
Fluid level should be checked using ‘‘HOT’’ range on dipstick at
fluid temperatures of 50 to 80°C (122 to 176°F) or using ‘‘COLD’’
range on dipstick at fluid temperatures of 0 to 30°C (32 to 86°F).
CAUTION:
● Do not overfill.
● Recommended fluid is Automatic Transmission Fluid
‘‘DEXRON
TM
’’ type.
Checking Fluid Leakage
Check the lines for security, leaks, cracks, damage, loose
connections, chafing or 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. Check rack boots for accumulation of power steering fluid.
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.
ST-6
After turning
360°
ON-VEHICLE INSPECTION
Bleeding Hydraulic System (Cont’d)
● Incomplete air bleeding will cause the following to occur.
When this happens, bleed air again.
a. Generation of air bubbles in reservoir tank
b. Generation of clicking noise in oil pump
c. Excessive buzzing in oil pump
While the vehicle is stationary or while moving the steering wheel
slowly, fluid noise may occur in the valve or oil pump. This noise
is inherent in this steering system, and it will not affect performance or durability of the system.
Checking Steering Wheel Turning Force
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 neutral position.
SST491B
Steering wheel turning force:
44.1 N (4.5 kg, 9.9 lb) or less
SST090B
5. If steering wheel turning force is out of specification, check
rack sliding force to detect condition of steering gear assembly.
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. While pulling tie-rod slowly from the neutral position, make
sure rack sliding force is within specification.
Rack sliding force:
284 N (29 kg, 64 lb) or less
6. If rack sliding force is not within specification, replace steering gear assembly.
ST-7
Pump
Direction of oil flow
ST27091000
Tank
ON-VEHICLE INSPECTION
Highpressure
hose
Gear
Low-pressure
hose
SST834
Checking Hydraulic System
Before starting, check belt tension, driving pulley and tire pressure.
1. Set Tool. Open shut-off valve. Then bleed air. (See ‘‘Bleeding Hydraulic System’’.)
2. Run engine.
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, oil pressure in oil pump
will increase to relief pressure, resulting in an abnormal rise
in oil temperature.
3. Check pressure with steering wheel fully turned to left and
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:
GA: 7,649 - 8,238 kPa
(76.5 - 82.4 bar, 78 - 84 kg/cm
1,109 - 1,194 psi)
QG: 7,502 - 8,101 kpa
(75 - 81 bar, 76.5 - 82.6 kg/cm
1,088 - 1,175 psi)
SR: 7,002 - 7,600 kPa
(70 - 76 bar, 71.4 - 77.5 kg/cm
1,015 - 1,102 psi)
CD: 7,690 - 8,493 kpa
(77 - 85 bar, 78,5 - 86,6 kg/cm
1,116 - 1,231 psi)
4. If oil pressure is below the standard pressure, slowly close
shut-off valve and check pressure.
● When pressure reaches above standard pressure, gear is
damaged.
● When pressure remains below standard pressure, pump is
damaged.
CAUTION:
Do not close shut-off valve for more than 15 seconds.
5. If oil pressure is higher than standard pressure, check oil
pump flow control valve (GA engine models only).
6. After checking hydraulic system, remove Tool and add fluid
as necessary, then completely bleed air out of system.
2
,
2
,
2
,
2
,
ST-8
STEERING WHEEL AND STEERING COLUMN
SEC. 484c487c488
Upper column cover
Steering column
assembly
Spiral cable
Ignition switch grommet
29-39
(3.0 - 4.0,
22 - 29)
Steering wheel
Horn pad
(Including Airbag
module)
Push-on nut
13-18
(1.3 - 1.8, 9 - 13)
15-19
(1.5 - 1.9, 11 - 14)
Lower column cover
: N·m (kg-m, ft-lb)
NST019
CAUTION:
● The rotation of the spiral cable (SRS ‘‘Air bag’’ compo-
nent 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.
● Remove the steering wheel before removing the steering
lower joint to avoid damaging the SRS spiral cable.
ST-9
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