Nissan Terrano r20e. Instruction — part 430
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 tempera-
ture.
Temperature:
60° - 80°C (140 - 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.
Steering wheel turning force:
39 N (4 kg, 9 lb) or less
I
If steering wheel turning force is not within specification,
perform the following inspection procedure:
E
Measure steering
wheel
turning force
39 N (4 kg, 9 lb) or less.
NG
E
OK
Test end
Measure preload of the
power steering gear
input shaft.
Refer to “Inspection
and Adjustment” in
“POWER STEERING
GEAR”.
NG
E
OK
Check oil pump
pressure.
Refer to “Checking
Hydraulic System” in
“ON-VEHICLE
SERVICE”.
NG
E
OK
Check ball joints,
swivel joints and
linkage for smooth
operation.
See “Inspection” in
“STEERING LINKAGE”.
NG
OK
Adjust preload.
Replace oil pump.
Replace joints.
Replace power
steering gear.
SST108B
H
H
H
H
H
H
H
H
H
ON-VEHICLE SERVICE
ST-6
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 “Bleed-
ing Hydraulic System”, ST-5.)
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:
TD27Ti engine
8,800 - 9,200 kPa (88 - 92 bar,
89 - 93 kg/cm
2
, 1,276 - 1,334 psi)
ZD30DTi engine
9,800 - 10,500 kPa (98.0 - 105.0 bar,
99.96 - 107.10 kg/cm
2
, 1,421 - 1,523 psi)
4. If oil pressure is below the maximum pressure, slowly close
shut-off valve and check pressure.
I
When pressure reaches maximum pressure, gear is damaged.
I
When pressure remains below maximum pressure, pump is
damaged.
CAUTION:
Do not close shut-off valve for more than 15 seconds.
5. If oil pressure is higher than maximum pressure, check oil
pump flow control valve.
6. After checking hydraulic system, remove Tool and add fluid if
necessary, then completely bleed air out of system.
NST033
ON-VEHICLE SERVICE
ST-7
Removal and Installation
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.
STEERING WHEEL
I
Remove remote audio control (if applied).
I
Remove air bag module and spiral cable.
Refer to RS-26, “Removal — Air Bag Module and Spiral Cable”.
YST020
SBF812E
STEERING WHEEL AND STEERING COLUMN
ST-8
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.)
I
Remove steering wheel with Tool.
STEERING COLUMN
I
When installing steering column, fingertighten upper support
bracket bolts and lower support bracket nuts; then tighten them
to the specified torque. Do not apply undue stress to steering
column.
I
When attaching coupling joint, be sure tightening bolt faces
cutout portion.
I
When inserting coupling joint onto steering gear axle, make
sure that it is positioned correctly.
CAUTION:
After installing steering column, turn steering wheel to make
sure it moves smoothly and that the number of turns from the
straight-ahead forward position to left and right locks are
equal. Be sure that the steering wheel is in a neutral position
when driving straight ahead.
Number of steering wheel turns from straight-ahead
position:
Right 1.93
Left 1.93
SRS266
SST777C
NST005
STEERING WHEEL AND STEERING COLUMN
Removal and Installation (Cont’d)
ST-9
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