STEERING

ST
A

B
SECTION
STEERING SYSTEM C

E
CONTENTS
PRECAUTION ............................................... 2 STEERING COLUMN ........................................ 12 F
Removal and Installation .........................................12
PRECAUTIONS ................................................... 2
Precaution for Supplemental Restraint System POWER STEERING GEAR AND LINKAGE .... 15 ST
(SRS) "AIR BAG" and "SEAT BELT PRE-TEN- Removal and Installation .........................................15
SIONER" ................................................................... 2
Precaution for Steering System ................................ 2 POWER STEERING OIL PUMP ....................... 17
Component ..............................................................17 H
PREPARATION ............................................ 3 Removal and Installation .........................................18

PREPARATION ................................................... 3 HYDRAULIC LINE ............................................ 20

I
Special Service Tool ................................................. 3 Removal and Installation .........................................20
Commercial Service Tool .......................................... 4
UNIT DISASSEMBLY AND ASSEMBLY ... 22
SYMPTOM DIAGNOSIS ............................... 5 J
STEERING COLUMN ........................................ 22
NOISE, VIBRATION AND HARSHNESS Disassembly and Assembly .....................................22
(NVH) TROUBLESHOOTING ............................. 5 K
POWER STEERING OIL PUMP ....................... 24
NVH Troubleshooting Chart ...................................... 5
Component ..............................................................24
PERIODIC MAINTENANCE .......................... 6 Disassembly and Assembly .....................................25
L
POWER STEERING FLUID ................................ 6 STEERING GEAR AND LINKAGE ................... 27
Checking Fluid Level ................................................. 6 Disassembly and Assembly .....................................27
Checking Fluid Leakage ............................................ 6
SERVICE DATA AND SPECIFICATIONS M
Air Bleeding Hydraulic System .................................. 6
(SDS) ............................................................ 30
POWER STEERING OIL PUMP .......................... 8
On-Vehicle Inspection and Service ........................... 8 SERVICE DATA AND SPECIFICATIONS N
(SDS) ................................................................. 30
STEERING WHEEL ............................................. 9 Steering Wheel ........................................................30
On-Vehicle Inspection and Service ........................... 9 Steering Column ......................................................30
O
Steering Gear ..........................................................30
REMOVAL AND INSTALLATION ............... 11 Tie-rod .....................................................................31
Oil Pump ..................................................................31
STEERING WHEEL ............................................11 Steering Fluid ..........................................................31 P
Removal and Installation ......................................... 11

Revision: May 2014 ST-1 2014 Frontier

 PRECAUTIONS
< PRECAUTION >
PRECAUTION
PRECAUTIONS
Precaution for Supplemental Restraint System (SRS) "AIR BAG" and "SEAT BELT
PRE-TENSIONER" INFOID:0000000010151211

The Supplemental Restraint System such as “AIR BAG” and “SEAT BELT PRE-TENSIONER”, used along
with a front seat belt, helps to reduce the risk or severity of injury to the driver and front passenger for certain
types of collision. This system includes seat belt switch inputs and dual stage front air bag modules. The SRS
system uses the seat belt switches to determine the front air bag deployment, and may only deploy one front
air bag, depending on the severity of a collision and whether the front occupants are belted or unbelted.
Information necessary to service the system safely is included in the SR and SB section of this Service Man-
ual.
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/INFINITI dealer.
• Improper maintenance, including incorrect removal and installation of the SRS, can lead to personal
injury caused by unintentional activation of the system. For removal of Spiral Cable and Air Bag
Module, see the SR section.
• Do not use electrical test equipment on any circuit related to the SRS unless instructed to in this
Service Manual. SRS wiring harnesses can be identified by yellow and/or orange harnesses or har-
ness connectors.
PRECAUTIONS WHEN USING POWER TOOLS (AIR OR ELECTRIC) AND HAMMERS
WARNING:
• When working near the Airbag Diagnosis Sensor Unit or other Airbag System sensors with the Igni-
tion ON or engine running, DO NOT use air or electric power tools or strike near the sensor(s) with a
hammer. Heavy vibration could activate the sensor(s) and deploy the air bag(s), possibly causing
serious injury.
• When using air or electric power tools or hammers, always switch the Ignition OFF, disconnect the
battery and wait at least three minutes before performing any service.
Precaution for Steering System INFOID:0000000009479911

• 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.
• For easier and proper assembly, place disassembled parts in order on a parts rack.
• Use nylon cloth or paper towels to clean the parts; common shop rags can leave lint that might interfere with
their operation.
• Before inspection or reassembly, carefully clean all parts with a general purpose, non-flammable solvent.
• Before assembly, apply a coat of recommended Genuine NISSAN PSF or equivalent to hydraulic parts.
Petroleum jelly 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 installation. Per-
form functional tests whenever designated.

Revision: May 2014 ST-2 2014 Frontier

 PREPARATION
< PREPARATION >
PREPARATION A
PREPARATION
Special Service Tool INFOID:0000000009479912
B

The actual shape of the tools may differ from those illustrated here.
Tool number Description
(TechMate No.) C
Tool name
ST3127 S000 Inspecting of pinion rotating torque and
(J-25765-A) rotational torque for ball joint D
Preload gauge
1. GG9103000
(J-25765-A)
Torque wrench E
2. HT62940000
( — )
Socket adapter
3. HT62900000
F
S-NT541
( — )
Socket adapter
HT72520000 Removing steering outer socket ST
(J-25730-A)
Ball joint remover
H

NT146 I
1. KV48105300-4 and 5295262U10 Measuring oil pump relief pressure
( — )
Connector A and O-ring J
2. KV48105300-3 and 5295262U00
( — )
Eye-bolt and O-ring
3. KV48103500 K
(J-26357 and J-26357-10)
Pressure gauge and shut-off valve
4. KV48105300-1 and 5295262U00
( — ) L
Connector B and O-ring SGIA0427E

5. KV48105300-2
( — )
M
Nut
— Measuring steering wheel turning force
(J-44372)
Spring gauge N

LST024

KV40107300 Crimping boot bands P

( — )
Boot band crimping tool

ZZA1229D

Revision: May 2014 ST-3 2014 Frontier

 PREPARATION
< PREPARATION >
Tool number Description
(TechMate No.)
Tool name
KV481J0010 Removing steering wheel
(J-1859A)
Steering wheel puller

LHIA0043E

KV481J0020 Removing steering wheel

(J-42578)
Steering wheel puller legs

LHIA0044E

Commercial Service Tool INFOID:0000000009479913

Tool name Description

Power tool Loosening nuts, screws and bolts

PIIB1407E

Revision: May 2014 ST-4 2014 Frontier

 Symptom

×: Applicable
Reference page

Revision: May 2014

Noise
Shake
< SYMPTOM DIAGNOSIS >

Shimmy
Possible cause and suspected parts

Shudder
Vibration
NVH Troubleshooting Chart

×
Fluid level ST-6
Air in hydraulic system ST-6

×
×
Outer socket ball joint swinging force ST-27
SYMPTOM DIAGNOSIS

×
Outer socket ball joint rotating torque ST-27

×
Outer socket ball joint end play ST-27

×
Steering fluid leakage ST-6

×
Steering wheel play ST-9

ST-5
×
Steering gear rack sliding force ST-9
EM-14, "Checking Drive Belts" (QR25DE),

×
Drive belt looseness
EM-129, "Checking Drive Belts" (VQ40DE)

×
×
×
Improper steering wheel ST-9

×
×
×
Improper installation or looseness of tilt lock lever ST-12

×
×
×

×
Insulator deterioration ST-15

×
Steering column deformation or damage ST-12

×
Improper installation or looseness of steering column ST-12

×
Steering linkage looseness ST-15

×
×

×
×
PROPELLER SHAFT DLN-132, "NVH Troubleshooting Chart"

×
DIFFERENTIAL DLN-184, "NVH Troubleshooting Chart"

×
×
×

×
AXLE FAX-4, "NVH Troubleshooting Chart"

×
×
×

×
SUSPENSION FSU-5, "NVH Troubleshooting Chart"

×
×
×

×
TIRES WT-44, "NVH Troubleshooting Chart"
NOISE, VIBRATION AND HARSHNESS (NVH) TROUBLESHOOTING

NOISE, VIBRATION AND HARSHNESS (NVH) TROUBLESHOOTING

Use chart below to help you find the cause of the symptom. If necessary, repair or replace these parts.

×
×

×
ROAD WHEEL WT-44, "NVH Troubleshooting Chart"
×

×
×
DRIVE SHAFT FAX-4, "NVH Troubleshooting Chart"

2014 Frontier
×

×
×

×
BRAKES BR-5, "NVH Troubleshooting Chart"
INFOID:0000000009479914

L
F

P
K
E
B
A

N
ST

H
D
C

O
M
 POWER STEERING FLUID
< PERIODIC MAINTENANCE >
PERIODIC MAINTENANCE
POWER STEERING FLUID
Checking Fluid Level INFOID:0000000009479915

Check fluid level, referring to the scale on the reservoir tank.

Use HOT range for fluid temperatures of 50°– 80°C (122°– 176°F).
Use COLD range for fluid temperatures of 0°– 30°C (32°– 86°F).
CAUTION:
• Do not overfill.
• Do not reuse any power steering fluid.
• Recommended fluid is Genuine NISSAN PSF or equivalent.
Refer to MA-16, "FOR USA AND CANADA : Fluids and Lubri-
cants" (United States and Canada), MA-18, "FOR MEXICO :
Fluids and Lubricants" (Mexico).
LGIA0021E

Checking Fluid Leakage INFOID:0000000009479916

Check the hydraulic piping lines for improper attachment, leaks,

cracks, damage, loose connections, chafing and deterioration.
CAUTION:
Do not reuse copper sealing washers.
1. Run the engine until the fluid temperature reaches 50°– 80°C
(122°– 176°F) in the reservoir tank. Keep engine speed idle.
CAUTION:
Do not allow steering fluid in the reservoir tank to go below
the MIN level line. Check tank frequently and add fluid as
needed.
2. Turn the steering wheel to the right and left several times. SGIA0506E

3. Hold the steering wheel at each “locked” position for five sec-
onds to check for fluid leakage.
CAUTION:
Do not hold steering wheel in the locked position for more than 10 seconds. (There is the possibil-
ity that the oil pump may be damaged.)
4. If fluid leakage at a connection is noticed, loosen the connection and then retighten. Do not over-tighten
connector as this can damage O-ring, washer and connector. Refer to ST-8 and ST-20.
5. If fluid leakage from the oil pump is noticed, check the oil pump. Refer to ST-8.
6. Check steering gear boots for accumulation of fluid, indicating a leak from the steering gear.
Air Bleeding Hydraulic System INFOID:0000000009479917

Incomplete air bleeding causes the following:

• Air bubbles in reservoir tank
• Clicking noise in oil pump
• Excessive buzzing in oil pump
When this happens bleed the air again.
1. With engine not started, turn steering wheel fully right to left several times. when fluid level is lowered,
refill reservoir. Repeat process until fluid level is stabilized.
2. Start the engine and turn the steering wheel fully to the right and left several times.
CAUTION:
Do not allow steering fluid in the reservoir tank to go below the MIN level line. Check tank fre-
quently and add fluid as needed.
NOTE:
When the vehicle is stationary or while the steering wheel is being turned slowly, some noise may be
heard from the oil pump or gear. This noise is normal and does not affect any system.
3. Run the engine at idle speed. Hold the steering wheel at each "locked" position for three seconds and
check for leakage.

Revision: May 2014 ST-6 2014 Frontier

 POWER STEERING FLUID
< PERIODIC MAINTENANCE >
CAUTION:
Do not hold steering wheel in the locked position for more than 10 seconds. (There is the possibil- A
ity that oil pump may be damaged.)
4. Repeat step 3 several times at about three second intervals.
5. Check for air bubbles, cloudy fluid and fluid leakage. B
6. If air bubbles or cloudiness exists, perform steps 3 and 4 again until air bubbles and cloudiness do not
exist.
7. Stop the engine and check fluid level. C

ST

Revision: May 2014 ST-7 2014 Frontier

 POWER STEERING OIL PUMP
< PERIODIC MAINTENANCE >
POWER STEERING OIL PUMP
On-Vehicle Inspection and Service INFOID:0000000009479918

CHECKING RELIEF OIL PRESSURE

CAUTION:
Before starting work, confirm that the belt tension is within specification. Refer to EM-14, "Checking
Drive Belts" (QR25DE), EM-129, "Checking Drive Belts" (VQ40DE).
1. Connect the Tool between the power steering oil pump dis-
charge connector and the high pressure hose, then bleed the air
from the hydraulic circuit. Refer to ST-6, "Air Bleeding Hydraulic
System".

Tool number:
KV48103500
Pressure gauge and shut-off valve
(J-26357 and J-26357-10)
Connector A and KV48105300-4 and
O-ring 5295262U10 ( — )
Oil pump side WGIA0129E
Eye-bolt and O- KV48105300-3 and
ring 5295262U00 ( — )
Connector B and KV48105300-1 and
High pressure piping O-ring 5295262U00 ( — )
side
Nut KV48105300-2 ( — )

2. Start the engine. Run the engine until the power steering fluid temperature reaches 50°– 80°C (122°–
176°F).
CAUTION:
• Warm up the engine with the shut-off valve fully opened. If the engine is started with the shut-off
valve closed, fluid pressure in the power steering oil pump increases to maximum pressure.
This will raise fluid temperature excessively.
• Do not contact the belt with the hose while the engine is running.
3. With the engine at idle, close the shut-off valve and read the relief oil pressure.

Relief oil pressure Refer to ST-31, "Oil Pump"

CAUTION:
Do not close the shut-off valve of the pressure gauge for more than 10 seconds.
4. After measurement, open the shut-off valve slowly.
• If relief oil pressure is outside the specification, replace the power steering oil pump. Refer to ST-18,
"Removal and Installation".
5. After inspection, disconnect the oil pressure gauge and oil pressure gauge adapter from the hydraulic cir-
cuit, then connect the power steering oil pump discharge connector. Add fluid and bleed the air from the
hydraulic circuit thoroughly. Refer to ST-6, "Air Bleeding Hydraulic System".

Revision: May 2014 ST-8 2014 Frontier

 STEERING WHEEL
< PERIODIC MAINTENANCE >
STEERING WHEEL
A
On-Vehicle Inspection and Service INFOID:0000000009479919

CHECKING CONDITION OF INSTALLATION B

• Check the installation condition of the steering gear assembly, front suspension, axle and steering column.
• Check if movement exists when the steering wheel is pushed up and down, left and right and in the axial
direction. C

End play of the axle direction Refer to ST-30, "Steering

for steering wheel Wheel"
D

• Check if the nuts for the steering gear assembly are loose. Refer to
ST-15.
E

ST

LGIA0024E

CHECKING STEERING WHEEL PLAY H

1. Turn the tires straight ahead and start the engine. Lightly turn the steering wheel left and right to the point
where the tires start moving, and measure the distance that the outer circumference of the steering wheel
travels. I

Steering wheel play on the outer circumference Refer to ST-30, "Steering

Wheel" J

CHECKING NEUTRAL POSITION ON STEERING WHEEL

• Check the neutral position on the steering wheel after confirming the front wheel alignment is correct. Refer
to FSU-6, "Front Wheel Alignment". K
1. Turn the tires straight ahead, check if the steering wheel is in the neutral position.
2. If it is not in the neutral position, remove the steering wheel and reinstall it correctly on the steering stem,
L
within two teeth of the original position.
3. If the neutral position cannot be attained by repositioning the steering wheel within two teeth on the steer-
ing stem, loosen the tie-rod lock nuts of the steering outer sockets, then adjust the tie-rods by the same
amount in the opposite direction of the steering wheel. M

CHECKING STEERING WHEEL TURNING FORCE

1. Park vehicle on a level, dry surface and set parking brake. N
2. Start engine.
3. Bring the power steering fluid up to adequate operating temperature. Make sure the fluid temperature is
approximately 50° – 80°C (122° – 176°F). O
4. Tires need to be inflated to specified pressure. Refer to WT-53, "Tire".

Revision: May 2014 ST-9 2014 Frontier

 STEERING WHEEL
< PERIODIC MAINTENANCE >
5. Check steering wheel turning force using Tool when steering
wheel has been turned 360° from the neutral position.

Tool number : — (J-44372)

Steering wheel Refer to ST-30, "Steering

turning force Wheel"
6. If steering wheel turning force is out of specification, inspect the
following:
• Steering column. Refer to ST-12, "Removal and Installation". WGIA0035E

• Power steering oil pump. Refer to ST-8, "On-Vehicle Inspec-

tion and Service".
7. If steering column and power steering oil pump meet specifications, replace steering gear. Refer to ST-15,
"Removal and Installation".
CHECKING FRONT WHEEL TURNING ANGLE
When checking the front wheel turning angle, refer to FSU-6, "Front Wheel Alignment".

Revision: May 2014 ST-10 2014 Frontier

 STEERING WHEEL
< REMOVAL AND INSTALLATION >
REMOVAL AND INSTALLATION A
STEERING WHEEL
Removal and Installation INFOID:0000000009479920
B

REMOVAL
1. Set the front wheels in the straight-ahead position. C
2. Remove the driver air bag module. Refer to SR-11, "Removal and Installation".
3. Disconnect the harness connectors from the steering wheel switches and remove.
4. Remove the steering wheel center nut. D
5. Remove the steering wheel, using Tools.

E
Tool number A: KV481J0010 (J-1859A)
B: KV481J0020 (J-42578)
6. Inspect the steering wheel near the puller holes for damage. If F
damage is found, replace the steering wheel.
• Remove the steering wheel rear cover and steering wheel
switches (if required).
ST
CAUTION:
Place a piece of tape across the spiral cable so it will not be WHIA0124E
rotated out of position.
H
INSTALLATION
Installation is in the reverse order of removal.
• Align spiral cable correctly when installing steering wheel. Make
sure that the spiral cable is in the neutral position. The neutral I
position is detected by turning left 2.5 revolutions from the right
end position and ending with the locating pin at the top.
• Refer to BRC-124, "ADJUSTMENT OF STEERING ANGLE SEN- J
SOR NEUTRAL POSITION : Special Repair Requirement" for
steering angle sensor adjustment.
• After the work is completed, perform self-diagnosis to make sure
no malfunction is detected. Refer to SRC-13, "SRS Operation K
Check".
PHIA0275E
• Tighten steering wheel center nut to specification. Refer to ST-12,
"Removal and Installation". L
CAUTION:
• The spiral cable may snap due to steering operation if the cable is not installed in the correct posi-
tion.
• With the steering linkage disconnected, the cable may snap by turning the steering wheel beyond M
the limited number of turns. The spiral cable can be turned counterclockwise about 2.5 turns from
the neutral position.
N

Revision: May 2014 ST-11 2014 Frontier

 STEERING COLUMN
< REMOVAL AND INSTALLATION >
STEERING COLUMN
Removal and Installation INFOID:0000000009479921

AWGIA0198GB

1. Driver air bag module 2. Steering wheel center nut 3. Steering wheel
4. Combination switch and spiral cable 5. Steering column assembly and 6. Collar
ignition switch
7. Hole cover seal 8. Clamp 9. Hole cover plate
10. Hole cover 11. Upper joint 12. Upper shaft
13. Boot clamp 14. Lower joint shaft 15. Boot and clips (plastic)

CAUTION:
• Do not exert any axial load or impact to the steering column.
• Do not move the steering gear while the steering column assembly is removed.
• Any time the ignition switch has been removed or installed, the keys must be re-registered in the
BCM. Refer to CONSULT Immobilizer mode and follow the on-screen instructions.
REMOVAL
1. Remove the spiral cable with the combination switches attached from the steering column assembly.
Refer to SR-13, "Removal and Installation".
2. Remove the instrument lower panel LH. Refer to IP-18, "Removal and Installation".
3. Remove the steering column cover and ignition key finisher. Refer to IP-16, "Removal and Installation".
4. Remove the lower knee protector. Refer to IP-15, "Removal and Installation".
5. Disconnect key interlock from steering column (if equipped). Refer to TM-297, "Removal and Installation".

Revision: May 2014 ST-12 2014 Frontier

 STEERING COLUMN
< REMOVAL AND INSTALLATION >
6. Remove the lock nut and bolt from the upper joint, then separate
the upper joint from the upper shaft. A
CAUTION:
Do not reuse the lock nut.
B

LGIA0027E

D
7. Remove the three nuts and bolt from the steering column
assembly, then remove the steering column assembly from the
steering member. E

ST
LGIA0028E

8. Remove the bolt from the lower joint of the lower joint shaft, then H
remove the lower joint shaft from the vehicle.
CAUTION:
Do not damage the lower joint. I

K
LGIA0029E

INSPECTION AFTER REMOVAL

• Check for damage to the steering column jacket tube. If damage is found, replace the steering column with a L
new one.
CAUTION:
• Do not exert any axial load or impact to the steering column.
• Replace the column if it is depleted of grease, worn, damaged, or if any scratches or coating sepa- M
ration is present on the shaft seal area.
• If the vehicle has been in a collision, or if noises are heard coming from the steering column, check column
length. If out of specification, replace the steering column as an assembly. N

Steering column Refer to ST-30, "Steering Col-

length (L) umn".
O

AWGIA0147ZZ

INSTALLATION
Installation is in the reverse order of removal.

Revision: May 2014 ST-13 2014 Frontier

 STEERING COLUMN
< REMOVAL AND INSTALLATION >
CAUTION:
When installing the steering column, finger-tighten all of the lower bracket and joint bolts; then tighten
them to specification. Do not apply undue stress to the steering column.
NOTE:
• With the wheels in the straight ahead position, align the slit of the
lower joint with the projection on the dust cover. Insert the joint until
surface (A) contacts surface (B).
• After installation, inspect the steering column for proper operation.

SST491C

INSPECTION AFTER INSTALLATION

• Check the tilt device for proper tilt range.

Tilt range (A) Refer to ST-30, "Steering

Column".
• Check that the steering wheel turns smoothly to the left and right
locks.
• Check that the number of turns are the same from the straight-for-
ward position to the left and right locks.
• Check that the steering wheel is in the neutral position when driv-
ing straight ahead.

WGIA0083E

Revision: May 2014 ST-14 2014 Frontier

 POWER STEERING GEAR AND LINKAGE
< REMOVAL AND INSTALLATION >
POWER STEERING GEAR AND LINKAGE
A
Removal and Installation INFOID:0000000009479922

ST
AWGIA0253ZZ

1. Cotter pin 2. Bracket 3. Insulator

H
4. Steering gear assembly 5. Washer Front

CAUTION:
Spiral cable may snap due to steering operation if the steering column is separated from the steering I
gear assembly. Therefore secure the steering wheel to avoid turning.
NOTE:
When removing components such as hoses, tubes/lines, etc., cap or plug openings to prevent fluid from spill-
ing. J

REMOVAL
1. Set front wheels in the straight-ahead position. K
2. Remove the front wheels and tires from the vehicle, using power tool. Refer to WT-48, "Adjustment".
3. Drain the power steering fluid.
4. Remove the engine under cover, using power tool. Refer to EXT-15, "Removal and Installation". L
5. On 4WD models, remove the front final drive, then support the drive shafts, using suitable wire. Refer to
DLN-191, "Removal and Installation".
6. Remove the stabilizer bar brackets and reposition the stabilizer bar. Refer to FSU-15, "Removal and M
Installation".
7. Remove the cotter pins at the steering outer sockets.
CAUTION: N
Do not reuse the cotter pins.
8. Loosen the outer socket nuts.
9. Remove the steering outer sockets from the steering knuckles, O
using Tool, then remove the nuts.

Tool number : HT72520000 (J-25730-A) P

CAUTION:
• Do not damage the outer socket boots.
• Do not damage the outer socket threads. Thread the ball
joint nut onto the end of the outer socket during removal.

WGIA0130E

Revision: May 2014 ST-15 2014 Frontier

 POWER STEERING GEAR AND LINKAGE
< REMOVAL AND INSTALLATION >
10. Remove the high-pressure and low-pressure piping from the
steering gear assembly, then drain the fluid from the piping.
CAUTION:
Do not reuse O-ring.

LGIA0032E

11. Remove the pinch bolt from the lower joint shaft, then separate
the lower joint from the steering gear assembly.
CAUTION:
Do not damage the lower joint.

LGIA0029E

12. Remove the nuts and bolts of the steering gear assembly, using
power tool, then remove the steering gear assembly from the
vehicle.

LGIA0024E

INSTALLATION
Installation is in the reverse order of removal.
CAUTION:
Do not reuse O-ring.
• Bleed the air from the steering hydraulic system before starting engine. Refer to ST-6, "Air Bleeding Hydrau-
lic System".
• With the steering wheel in the straight ahead position, align the slit
of the lower joint with the projection on the dust cover. Insert the
joint until surface (A) contacts surface (B).
• After removing/installing or replacing steering components, check
wheel alignment. Refer to FSU-6, "Front Wheel Alignment".
• After adjusting wheel alignment, adjust neutral position of the
steering angle sensor (if equipped with VDC). Refer to BRC-124,
"ADJUSTMENT OF STEERING ANGLE SENSOR NEUTRAL
POSITION : Special Repair Requirement".

SST491C

INSPECTION AFTER INSTALLATION

• Check that the steering wheel turns smoothly to the left and right locks.
• Check that the number of turns are the same from the straight-forward position to the left and right locks.
• Check that the steering wheel is in the neutral position when driving straight ahead.

Revision: May 2014 ST-16 2014 Frontier

 POWER STEERING OIL PUMP
< REMOVAL AND INSTALLATION >
POWER STEERING OIL PUMP
A
Component INFOID:0000000009479923

QR25DE B

ST

AWGIA0197GB

1. Joint 2. Suction pipe 3. O-ring K

4. Front bracket 5. Pulley 6. Lock washer
7. Body assembly 8. Copper sealing washers 9. Flow control valve and spring
L
10. Connector 11. Rear bracket Apply Genuine Nissan PSF or equivalent

Revision: May 2014 ST-17 2014 Frontier

 POWER STEERING OIL PUMP
< REMOVAL AND INSTALLATION >
VQ40DE

AWGIA0137GB

1. Joint 2. Suction pipe 3. O-ring

4. Front bracket 5. Pulley 6. Lock washer
7. Body assembly 8. Copper sealing washers Apply Genuine Nissan PSF or equivalent

Removal and Installation INFOID:0000000009479924

NOTE:
When removing components such as hoses, tubes/lines, etc., cap or plug openings to prevent fluid from spill-
ing.
REMOVAL
1. Drain the power steering fluid from the reservoir tank.
2. On VQ40DE model, remove the engine room cover. Refer to EM-140, "Removal and Installation".
3. On VQ40DE model, remove cooling fan assembly. Refer to CO-48, "Removal and Installation (Motor
driven type)" (VQ40DE).
4. Remove the air duct assembly. Refer to EM-25, "Exploded View" (QR25DE), EM-141, "Exploded View"
(VQ40DE).
5. Remove the serpentine drive belt from the auto-tensioner and power steering oil pump. Refer to EM-14,
"Removal and Installation" (QR25DE), EM-129, "Removal and Installation" (VQ40DE).
6. Disconnect the harness connector from pressure sensor.
7. Remove the high pressure and low pressure piping from the power steering oil pump. Refer to ST-20,
"Removal and Installation".
8. Remove the power steering oil pump bolts, then remove the power steering pump.
INSTALLATION
Installation is in the reverse order of removal.

Revision: May 2014 ST-18 2014 Frontier

 POWER STEERING OIL PUMP
< REMOVAL AND INSTALLATION >
• On VQ40DE, install the bolts to specification in the order shown.
• After installation, bleed the air from the hydraulic circuit thoroughly. A
Refer to ST-6, "Air Bleeding Hydraulic System".

Power steering pump to 64.7 Nm (6.6 kg–m, 48 ft–lb) B

bracket bolt (1)
Power steering pump to 28 Nm (2.9 kg–m, 21 ft–lb)
block bolt (2) C
NOTE:
Belt tension is automatic and requires no adjustment. ALGIA0047ZZ

D
POWER STEERING OIL PUMP BRACKET (VQ40DE)
Removal
1. Remove the power steering oil pump. E
2. Remove the bolts and the power steering oil pump bracket.
Installation
F
1. Position the bracket and install the bracket to block bolts finger tight.
2. Tighten the bolts to specification in order as shown.
ST
Bracket to front of block 61.3 Nm (6.3 kg–m, 45 ft–lb)
bolt (1)
Bracket to side of block 61.3 Nm (6.3 kg–m, 45 ft–lb) H
bolt (2)
3. Install the power steering oil pump.
I

ALGIA0048ZZ

Revision: May 2014 ST-19 2014 Frontier

 HYDRAULIC LINE
< REMOVAL AND INSTALLATION >
HYDRAULIC LINE
Removal and Installation INFOID:0000000009479925

CAUTION:
Do not reuse O-rings or copper sealing washers.
NOTE:
When removing components such as hoses, tubes/lines, etc., cap or plug openings to prevent fluid from spill-
ing.
Refer to the following illustration for hydraulic line removal and installation.

AWGIA0195GB

1. Reservoir tank 2. Suction hose 3. High pressure hose

4. Oil cooler 5. Steering gear assembly 6. Reservoir tank

Revision: May 2014 ST-20 2014 Frontier

 HYDRAULIC LINE
< REMOVAL AND INSTALLATION >
7. Reservoir tank bracket 8. Return hose 9. Hose clamps
10. Suction hose 11. Connector bolts 12. Copper sealing washers A
13. Pressure sensor 14. O-ring A. Reservoir tank attachment
B. Power steering pump connec- C. Steering gear assembly con- D. Low pressure hose
tions nections B
E. High pressure hose Genuine Nissan PSF or Front
equivalent
C

ST

Revision: May 2014 ST-21 2014 Frontier

 STEERING COLUMN
< UNIT DISASSEMBLY AND ASSEMBLY >
UNIT DISASSEMBLY AND ASSEMBLY
STEERING COLUMN
Disassembly and Assembly INFOID:0000000009479926

WGIA0126E

1. Steering column assembly 2. Upper joint 3. Ignition switch

4. Self-shear screw

DISASSEMBLY
1. Remove the bolt from the upper joint, then remove the upper joint from the steering column assembly.
2. Remove the ignition switch tamper resistant self-shear screws, using a drill.
3. Remove the ignition switch from the steering column.
ASSEMBLY
Assembly is in the reverse order of disassembly.
CAUTION:
• Do not reuse the self--shear screws.
• Any time the ignition switch has been removed and installed,
the keys must be re-registered in the BCM. Refer to CONSULT
Immobilizer mode and follow the on-screen instructions.

WGIA0009E

Revision: May 2014 ST-22 2014 Frontier

 STEERING COLUMN
< UNIT DISASSEMBLY AND ASSEMBLY >
INSPECTION AFTER ASSEMBLY
When the steering wheel does not turn smoothly, check as follows: A
1. Check the steering column for the following:
• Damage to the column tube or bearings
• Wear around the seal edges B
• Corrosion or pitting around the seal sliding area
Replace the steering column as an assembly, if necessary.
CAUTION:
• Do not exert any axial load or impact to the steering column. C
• Replace the column if it is depleted of grease, worn, damaged, or if any scratches or coating
separation is present on the shaft seal area.
2. If the vehicle has been in a collision, or if noises are heard coming from the steering column, check col- D
umn length. If out of specification, replace the steering column as an assembly.

Steering column Refer to ST-30, "Steering Col- E

length (L) umn"

ST

AWGIA0147ZZ

H
3. Check the tilt device for proper operation range.

Range (A) Refer to ST-30, "Steering

I
Column"

WGIA0083E

Revision: May 2014 ST-23 2014 Frontier

 POWER STEERING OIL PUMP
< UNIT DISASSEMBLY AND ASSEMBLY >
POWER STEERING OIL PUMP
Component INFOID:0000000009479927

QR25DE

AWGIA0125GB

1. Joint 2. Suction pipe 3. O-ring

4. Front bracket 5. Pulley 6. Lock washer
7. Body assembly 8. Copper sealing washers 9. Flow control valve and spring
10. Connector 11. Rear bracket Apply Genuine Nissan PSF or equivalent

Revision: May 2014 ST-24 2014 Frontier

 POWER STEERING OIL PUMP
< UNIT DISASSEMBLY AND ASSEMBLY >
VQ40DE
A

ST

H
AWGIA0137GB

1. Joint 2. Suction pipe 3. O-ring

4. Front bracket 5. Pulley 6. Lock washer I
7. Body assembly 8. Copper sealing washers Apply Genuine Nissan PSF or equivalent

Disassembly and Assembly INFOID:0000000009479928

J

INSPECTION BEFORE DISASSEMBLY

Disassemble the power steering oil pump only if the following items are found. K
• Deformed or damaged pulley, bracket, connector or suction pipe
• Oil leakage from the suction pipe or connector.
L
DISASSEMBLY
NOTE:
Mount the power steering oil pump in a vise as needed.
1. Remove the joint bolt, joint and copper sealing washers. M
CAUTION:
Do not reuse copper sealing washers.
2. On QR25DE model, remove connector and flow control valve with spring. N
3. Remove the suction pipe and O-ring.
CAUTION:
Do not reuse O-ring. O
4. Remove the pulley nut and pulley.
5. Remove the bracket bolts and bracket(s).
P
INSPECTION AFTER DISASSEMBLY
Body Assembly Inspection
Check the power steering oil pump body assembly for damage. If any damage is found, replace with a new
power steering oil pump assembly.
ASSEMBLY
Assembly is in the reverse order of disassembly.

Revision: May 2014 ST-25 2014 Frontier

 POWER STEERING OIL PUMP
< UNIT DISASSEMBLY AND ASSEMBLY >
CAUTION:
• Do not reuse O-ring or copper sealing washers.
• Apply a coat of Genuine NISSAN PSF or equivalent to the O-ring.

Revision: May 2014 ST-26 2014 Frontier

 STEERING GEAR AND LINKAGE
< UNIT DISASSEMBLY AND ASSEMBLY >
STEERING GEAR AND LINKAGE
A
Disassembly and Assembly INFOID:0000000009479929

ST

J
AWGIA0139GB

1. Boot clamp 2. Inner socket 3. Boot K

4. Boot clamp 5. Outer socket 6. Cylinder tubes
7. Gear housing assembly 8. Connector
L
CAUTION:
• Secure the gear housing assembly with a vise. Use copper plates or equivalent to prevent it from
being damaged. Do not grip the cylinder with a vise.
• Before performing disassembly, clean the gear housing assembly. Be careful not to allow any M
cleaner to contact the discharge and return port connectors.
DISASSEMBLY
N
1. Remove the cylinder tubes from the gear housing assembly.
2. Loosen the lock nuts of the outer sockets, then remove the outer sockets from the inner sockets.
3. Remove the boot clamps from the boots, then remove the boots from the inner sockets and gear housing O
assembly.
CAUTION:
• Do not reuse the large-diameter boot clamps.
• Do not damage the boots, inner socket or gear housing assembly. If they are damaged, replace P
them.
4. Remove the inner sockets.
INSPECTION AFTER DISASSEMBLY
Boot
Check boot for tears, cracks and deformation. Replace if necessary.

Revision: May 2014 ST-27 2014 Frontier

 STEERING GEAR AND LINKAGE
< UNIT DISASSEMBLY AND ASSEMBLY >
Gear Housing Assembly
Check gear housing assembly for dents, cracks or damage. Replace as an assembly if necessary.
Outer Socket and Inner Socket

SWING TORQUE
• Measure the swing torque, using Tool. When ball stud and inner
socket start moving the measured value must be within the specifi-
cation. If the reading is outside the specification, replace the
socket.

Tool number : — (J-44372)

WGIA0131E

Item Outer socket Inner socket

Measuring point Cotter pin hole of stud Shown as L: Refer to ST-30, "Steering Gear"
Swing torque Refer to ST-30, "Steering Gear" Refer to ST-30, "Steering Gear"
Measuring value Refer to ST-30, "Steering Gear" Refer to ST-30, "Steering Gear"

ROTATING TORQUE
• Measure the rotating torque, using Tool. If the value is outside the
specification, replace the outer sockets.

Tool number : ST3127S000 (J-25765-A)

Outer socket Refer to ST-30, "Steering Gear"

rotating torque

WGIA0132E

AXIAL END PLAY

• Apply a load of 490 N (50 kg-f, 110 lb-f) to the ball stud axially. Use
a dial gauge to measure the amount of the movement that the stud
makes. If the value is outside the specification, replace the sock-
ets.

Outer socket Refer to ST-30, "Steering Gear"

Inner socket Refer to ST-30, "Steering Gear"

SGIA0057E

ASSEMBLY
1. Install the inner sockets.

Revision: May 2014 ST-28 2014 Frontier

 STEERING GEAR AND LINKAGE
< UNIT DISASSEMBLY AND ASSEMBLY >
2. Install the large-diameter side of the boots to the gear housing
assembly. A
3. Install the small-diameter side of the boots to the groove of the
inner sockets.
B

SGIA0550E

D
4. Install the boot clamps to the boots, as shown.
CAUTION:
Do not reuse the large boot clamps.
E

ST

AST139
K
5. Crimp the large boot clamps, using Tool.

Tool number : KV40107300 ( — ) L

6. Install the cylinder tubes to the gear housing assembly.

7. Install the lock nuts and outer sockets to the inner sockets.
M

N
RAC1133D

8. Thread the outer sockets onto the inner sockets to the specified O
length (L) and a minimum thread depth of 18 threads, then
tighten the lock nuts to the specified torque. Refer to "Disassem-
bly and Assembly". Reconfirm that the tie-rod length (L) is within P
specification.

Maximum inner Refer to ST-30, "Steering

socket length (L) Gear"

SGIA0167E

Revision: May 2014 ST-29 2014 Frontier

 SERVICE DATA AND SPECIFICATIONS (SDS)
< SERVICE DATA AND SPECIFICATIONS (SDS)
SERVICE DATA AND SPECIFICATIONS (SDS)
SERVICE DATA AND SPECIFICATIONS (SDS)
Steering Wheel INFOID:0000000009479930

End play of the axle direction for steering wheel 0 mm (0 in)

Steering wheel turning force 39 N (4 kg-f, 9 lb-f) or less
Steering wheel play on the outer circumference 0 − 35 mm (0 − 1.38 in)

Steering Column INFOID:0000000009479931

AWGIA0147ZZ

Steering column length (L) 553.0 mm (21.77 in)

WGIA0083E

Tilt range (A) 18° - 21° of tilt range

Steering Gear INFOID:0000000009479932

Steering gear type PR26AM

WGIA0131E

Revision: May 2014 ST-30 2014 Frontier

 SERVICE DATA AND SPECIFICATIONS (SDS)
< SERVICE DATA AND SPECIFICATIONS (SDS)
Steering gear type PR26AM
A
Swinging torque 0.3 − 2.9 N·m (0.03 − 0.29 kg-m, 3 − 25 in-lb)
Measurement on spring balance
4.84 − 46.7 N (0.50 − 4.7 kg-f, 4 − 34 lb-f)
Outer socket • Measuring point: cotter pin hole of stud
B
Rotating torque 0.3 − 2.9 N·m (0.03 − 0.29 kg-m, 3 − 25 in-lb)
Axial end play 0.5 mm (0.020 in) or less
Swinging torque 1.0 − 7.8 N·m (0.11 − 0.79 kg-m, 9 − 69 in-lb) C
Measurement on spring balance
Inner socket • Measuring point: L mark see above, 12.1 − 93.7 N (1.3 − 9.5 kg-f, 9 − 69 lb-f)
L=83.2 mm (3.276 in).
D
Axial end play 0.2 mm (0.08 in) or less
Standard 280 ± 30 N (28.6 ± 3.1 kg-f, 62.9 ± 6.7 lb-f)
Rack sliding force
Minimum 210 N (21.4 kg-f, 47.2 lb-f) E

Tie-rod INFOID:0000000009479933

ST

SGIA0167E

Tie-rod maximum length (L) 84 mm (3.31 in) J

Oil Pump INFOID:0000000009479934

K
Oil pump relief hydraulic pressure - Maximum 8.8 mPa (89.76 kg/cm2, 1276 psi)

Steering Fluid INFOID:0000000009479935 L

Fluid capacity Approx. 1.0 (2 1/8 US pt, 1 3/4 Imp pt) M

Revision: May 2014 ST-31 2014 Frontier