Infiniti I35 (A33). Manual — part 594
Checking and Adjusting Drive Belts
NHST0011
Refer to MA-13, “Checking Drive Belts”.
SST850C
Checking Fluid Level
NHST0012
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.
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Recommended fluid is Genuine Nissan PSF II or equiva-
lent. Refer to MA-11, “Fluids and Lubricants”.
SST851C
Checking Fluid Leakage
NHST0013
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.
Bleeding Hydraulic System
NHST0014
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 steer-
ing wheel fully to right and left and lightly touch steering stop-
pers.
Repeat steering wheel operation until fluid level no longer
decreases.
3.
Start engine.
Repeat step 2. above.
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Incomplete air bleeding will cause the following to occur. When
this happens, bleed air again.
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ON-VEHICLE SERVICE
Checking and Adjusting Drive Belts
ST-7
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 tempera-
ture. [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 steer-
ing gear assembly.
7.
If rack sliding force is OK, inspect steering column. Refer to
ST-13.
ON-VEHICLE SERVICE
Bleeding Hydraulic System (Cont’d)
ST-8
SST834-F
Checking Hydraulic System
NHST0016
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-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 abnor-
mally.
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:
8,140 - 8,728 kPa (83 - 89 kg/cm
2
, 1,180 - 1,266 psi)
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If pressure reaches maximum operating pressure, system is
OK.
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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.
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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.
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ON-VEHICLE SERVICE
Checking Hydraulic System
ST-9
Components
NHST0017
SST852C
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:
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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.
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Remove the steering wheel before removing the steering
lower joint to avoid damaging the SRS spiral cable.
SBF812E
Removal and Installation
NHST0018
STEERING WHEEL
NHST0018S01
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Remove air bag module and spiral cable.
Refer to RS-20, “Removal — Air Bag Module and Spiral Cable”.
STEERING WHEEL AND STEERING COLUMN
Components
ST-10
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