Nissan Frontier D22. Manual - part 862

PS-8

ON-VEHICLE SERVICE

Checking Fluid Leakage 

EGS000L4

Check lines for improper attachment, leaks, cracks, damage, chafing
and deterioration.

1.

Run engine between idle speed and 1,000 rpm.

2.

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).]

3.

Turn steering wheel right-to-left several times.

4.

Hold steering wheel at each “lock” position for 5 seconds and
carefully check for fluid leakage.

CAUTION:

Do not hold steering wheel at lock position for more than 15
seconds.

5.

If fluid leakage from any line is noticed, loosen flare nut and then retighten.

CAUTION:

Do not overtighten connector as this can damage O-ring, washer and connector.

6.

If fluid leakage from power steering pump is noticed, check power steering oil pump. Refer to 

PS-17, "Pre-

disassembly Inspection"

 .

7.

If fluid leakage from power steering gear is noticed, check power steering gear. Refer to 

PS-15, "Inspec-

tion and Adjustment"

 .

Bleeding Hydraulic System 

EGS000L5

1.

Raise front end of vehicle until wheels are clear of the ground.

2.

Add fluid to reservoir tank to specified level. 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.

●

Incomplete air bleeding will cause the following to occur:

–

Air bubbles in reservoir tank

–

Clicking noise in power steering pump

–

Excessive buzzing in power steering pump

When this happens, bleed air again.

Fluid noise may occur in the valve or power steering 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.

Checking Steering Wheel Turning Force 

EGS000L6

1.

Park vehicle on a level, dry surface and set parking brake.

2.

Start engine and run at idle speed or 1,000 rpm.

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).]

4.

Check steering wheel turning force when steering wheel has
been turned 360

° from neutral position.

NOTE:
Tires need to be inflated to normal pressure.

5.

If steering wheel turning force is out of specification, check the
following:

a.

Hydraulic system. Refer to 

PS-9, "Checking Hydraulic System"

 .

b.

Steering column. Refer to 

PS-13, "Inspection"

 .

AST255

AST253

Steering wheel turning 
force

: 39 N (4 kg, 9 lb) or less

WST049

ON-VEHICLE SERVICE

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c.

Front suspension and axle. Refer to 

FSU-8, "Component"

  and 

FAX-5, "Front Axle Parts"

 .

d.

Steering gear turning torque. Refer to 

PS-8, "Checking Steering Wheel Turning Force"

 .

Checking Hydraulic System

EGS000L7

Before starting, check belt tension, driving pulley and tire pressure.

1.

Set Tool. Open shut-off valve, then bleed air. Refer to 

PS-8,

"Bleeding Hydraulic System"

 .

2.

Run engine at idle speed or 1,000 rpm.

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).]

WARNING:

Warm up engine with shut-off valve fully opened. If engine
is started with shut-off valve closed, fluid pressure in the
power steering pump increases to maximum. This will raise
fluid temperature abnormally. 

4.

Check pressure with steering wheel fully turned to left and right positions while idling at 1,000 rpm.

CAUTION:

Do not hold the steering wheel at full lock position for more than 15 seconds.

●

If pressure reaches maximum operating pressure, system is OK.

●

If pressure increases above maximum operating pressure, check power steering pump flow control
valve. Refer to 

PS-17, "Components"

 .

5.

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.

●

If pressure increases to maximum operating pressure, gear is damaged. Refer to 

PS-17, "Compo-

nents"PS-15, "Removal and Installation"

 .

●

If pressure remains below maximum operating pressure, pump is damaged. Refer to 

PS-17, "Compo-

nents"

 .

6.

After checking hydraulic system, remove Tool and add fluid as necessary. Completely bleed air out of sys-
tem. Refer to 

PS-8, "Bleeding Hydraulic System"

 .

Power steering pump 
maximum operating 
pressure

: 7,551 - 8,336 kPa (77 - 85 

kg/cm

2

 , 1,095 - 1,209 psi) 

at idle

AST203

PS-10

STEERING WHEEL AND STEERING COLUMN

STEERING WHEEL AND STEERING COLUMN

PFP:48430

Components

EGS000L8

Removal and Installation

EGS000L9

STEERING WHEEL

1.

Remove air bag module and spiral cable. Refer to 

SRS-42,

"Removal and Installation"

 .

2.

Disconnect horn connector and remove steering wheel nut.

1.

Steering column cover

2.

Spiral cable. Refer to 

SRS-42, 

"Removal and Installation"

3.

Steering Wheel

4.

Driver air bag module. Refer to 

SRS-42, "Removal and Installation"

5.

Tilt mechanism

6.

Instrument lower panel drivers side

7.

Knee protector

WGIA0022E

WRS235

STEERING WHEEL AND STEERING COLUMN

PS-11

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3.

Remove steering wheel using Tool.

●

For installation, refer to 

SRS-42, "Removal and Installation"

 .

STEERING COLUMN
Removal

CAUTION:

●

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.

●

Remove the steering wheel before removing the steering lower joint to avoid damaging the SRS
spiral cable. Refer to 

SRS-42, "Removal and Installation"

 .

1.

Remove steering wheel. Refer to 

PS-10, "STEERING WHEEL"

 .

2.

Remove steering column covers.

3.

Remove instrument lower panel. Disconnect security lamp indicator.

4.

Disconnect combination switch electrical connectors and air bag harness connector.

5.

Remove knee protector.

6.

Disconnect ignition switch and shift lock solenoid connectors.

7.

Disconnect shift cable.

8.

Remove bolt from lower joint.

9.

Remove two steering column bolts and remove steering column.

Installation

●

When installing steering column, finger-tighten all lower bracket and clamp retaining bolts; then tighten
them securely. Make sure that undue stress is not applied to steering column.

●

When fitting steering lower joint, be sure tightening bolt faces
cutout portion.

●

Align spiral cable correctly when installing steering wheel. Refer
to 

SRS-42, "Removal and Installation"

 .

CAUTION:

After installation, turn steering wheel to make sure it moves
smoothly. Ensure the number of turns from the straight for-
ward position to left and right locks are the same. Be sure
that the steering wheel is in a neutral position when driving
straight ahead.

AST226

SST666A