NISSAN LATIO 2007 Service Repair Manual

STEERING WHEEL
PS-7
C
D
E
F
H
I
J
K
L
MA
B
PS
Revision: June 20062007 Versa
CHECKING FRONT WHEEL TURNING ANGLE

Check front wheel turning angle after toe-in inspection. Place
front wheels on turning radius gauges and rear wheels on
stands. Check the maximum inner and outer wheel turning
angles for LH and RH road wheels.

With the engine at idle, turn steering wheel from full left stop to
full right stop and measure the turning angles.

Measure rack stroke if angles are outside the specified value.

Disassemble steering gear assembly to check the cause that
rack stroke is outside of the standard.

Steering angles are not adjustable. Check steering gear assem-
bly, steering column assembly and front suspension compo-
nents for wear or damage if any of the turning angles are
different from the specified value. Replace any of them, if any
non-standard condition exists.
FAA0016D
Inner wheel (Angle: A)Minimum 35° 00′ (35.0°)
Nominal 38° 00′ (38.0°)
Maximum 39° 00′ (39.0°)
Outer wheel (Angle: B) 33° 00′ (33.0°)
SGIA0055E
Rack stroke “L” : 65.0 mm (2.559 in)
WGIA0181E

PS-8
STEERING WHEEL
Revision: June 20062007 Versa
Removal and InstallationEGS0014W
REMOVAL
NOTE:
When reconnecting spiral cable, secure cable with a tape so that case and rotating part keep aligned. This will
omit neutral position alignment procedure during spiral cable installation.
1. Set vehicle to the straight-ahead position.
2. Remove driver air bag module. Refer to SRS-41, "
DRIVER AIR BAG MODULE" .
3. Remove steering wheel lock nut after steering is locked.
4. Remove steering wheel.
INSTALLATION
Installation is in the reverse order of removal.
CAUTION:
Do not run spiral cable idle needlessly. And do not turn it more than necessary (or it leads to discon-
nection of the cable).
NOTE:

The neutral position is set as follows.
Turn the spiral cable clockwise to the end position. Then turn it
counterclockwise (about 2 and half turns) and stop turning at the
point on which the stopper insertion holes are in the same posi-
tion (B). The service part is installed in the neutral position by
the stopper and can be set without adjusting after the stopper is
removed.

Adjust the spiral cable locating pin (B) to the steering wheel
locating pin hole (C).
WGIA0183E

STEERING COLUMN
PS-9
C
D
E
F
H
I
J
K
L
MA
B
PS
Revision: June 20062007 Versa
STEERING COLUMNPFP:48810
Removal and InstallationEGS0014X
COMPONENT
CAUTION:

Do not allow axial impact to steering column assembly during removal and installation.

Steering column must be kept at maximun tilt up position during removal and installation. Do not
operate tilt mechanism while steering column is out of the vehicle.

Put matching mark on intermediate shaft and steering column assembly before removing interme-
diate shaft.

When steering wheel is turned repeatedly with the vehicle stopped, care must be taken because
motor and EPS control unit may get too hot.

Steering column assembly is heavy. Care must be taken when removing steering column assem-
bly from vehicle.

Do not put steering column assembly near the things that generate excessive magnetic force.

Steering column assembly (with motor, reduction gear, sensor) cannot be disassembled.
REMOVAL
1. Set vehicle to the straight ahead-position.
2. Remove driver air bag module. Refer to SRS-41, "
DRIVER AIR BAG MODULE" .
3. Remove steering wheel. Refer to PS-8, "
Removal and Installation" .
4. Remove steering column cover (upper and lower). Refer to IP-10, "
Component Parts" .
5. Remove combination switch & spiral cable. Refer to SRS-44, "
SPIRAL CABLE" .
6. Remove instrument lower finisher. Refer to IP-10, "
Component Parts" .
7. Disconnect each switch connector installed to steering column assembly, and then disconnect harness
from steering column assembly.
1. Steering wheel 2. Steering column assembly (with
motor, reduction gear, sensor)3. Bracket
4. EPS control unit 5. Intermediate shaft
WGIA0179E

PS-10
STEERING COLUMN
Revision: June 20062007 Versa
8. Remove bolt of intermediate shaft (upper side), and then remove intermediate shaft from steering column
assembly.
9. Remove steering column assembly mounting nuts, and then remove steering column assembly from vehi-
cle.
10. Remove bolt of intermediate shaft (lower side), and then remove intermediate shaft from vehicle.
11. Remove screws of bracket and EPS control unit, and then remove bracket and EPS control unit from
steering column assembly.
INSPECTION AFTER REMOVAL

Check each part of steering column assembly, EPS control unit and intermediate shaft for damage and .
replace as necessary.

Measure the length “L” as shown, if vehicle has been involved in
a minor collision. Replace steering column assembly (with
motor, reduction gear, sensor) if outside the standard.

Check tilt mechanism for damage or other malfunctions.
Replace steering column assembly (with motor, reduction gear,
sensor) as necessary.

Measure steering column assembly rotating torque using Tool.
Replace steering column assembly (with motor, reduction gear, sensor) if outside the standard.
INSTALLATION
Installation is in the reverse order of removal.

Installation is in the reverse order of removal. For tightening torque, refer to PS-9, "COMPONENT" .

When tightening bolt (intermediate shaft lower side), tighten it by hand first, and make sure there is no
feeling of sticking or galling before final tightening.
CAUTION:
Insert bolt in the proper direction. (Do not insert it from the other side.)

When connecting intermediate shaft upper side (1) and column
shaft, make sure the bolt is securely seated in groove (A) of col-
umn shaft (A) before final tightening.
INSPECTION AFTER INSTALLATION

Rotate steering wheel to check for decentered condition, binding, noise or excessive steering effort.

After installing steering column assembly, perform self-diagnosis with CONSULT-II to ensure correct oper-
ation. Refer to STC-13, "
CONSULT-II Function (EPS)" . Steering column
length “L”Minimum 462.1 mm (18.19 in)
Nominal 464.1 mm (18.27 in)
Maximum 466.1 mm (18.35 in)
Tool number : ST3127S000 (J-25742-1)
Rotating torque : 0 - 2.1 N·m (0 - 0.21 kg-m, 0 - 18 in-lb)
SGIA1293E
SGIA1295E

STEERING COLUMN
PS-11
C
D
E
F
H
I
J
K
L
MA
B
PS
Revision: June 20062007 Versa

Check tilt mechanism operating range “L” as shown.
Tilt operating range “L” : 20 mm (0.79 in)
LGIA0040E

PS-12
POWER STEERING GEAR
Revision: June 20062007 Versa
POWER STEERING GEARPFP:49001
Removal and InstallationEGS0014Y
COMPONENT
CAUTION:
Spiral cable may be cut if steering wheel turns while separating steering column assembly and steer-
ing gear assembly. Be sure to secure steering wheel using string to avoid turning.
REMOVAL
1. Set vehicle to the straight-ahead position.
2. Remove bolt of intermediate shaft (lower side), and then remove intermediate shaft from steering gear
pinion shaft.
3. Raise vehicle.
4. Remove tires from vehicle with a power tool.
5. Loosen steering outer socket (1) mounting nut.
6. Remove steering outer socket (1) from steering knuckle (2) so
as not to damage ball joint boot (3) using the ball joint remover
(suitable tool).
CAUTION:
Temporarily tighten the nut to prevent damage to threads
and to prevent the ball joint remover (suitable tool) from
suddenly coming off.
7. Remove front suspension member. Refer to FSU-10, "
Removal and Installation" .
8. Remove mounting bolts and nuts of steering gear assembly.
INSTALLATION
Installation is in the reverse order of removal.

For tightening torque, refer to PS-12, "COMPONENT" .

Clean mounting surface on the body side of fire wall seal when installing steering gear assembly.
1. Steering gear assembly 2. Washer 3. Fire wall seal
4. Heat insulator 5. Front suspension member
Refer to GI-8, "
HOW TO USE THIS MANUAL" for the symbols.
SGIA1296E
SGIA1298E

POWER STEERING GEAR
PS-13
C
D
E
F
H
I
J
K
L
MA
B
PS
Revision: June 20062007 Versa

Check wheel alignment under unladen conditions with tires on level ground. Refer to FSU-6, "Wheel
Alignment Inspection" .
INSPECTION AFTER INSTALLATION
Rotate steering wheel to check for decentered condition, binding, noise or excessive steering effort.
Disassembly and AssemblyEGS0014Z
COMPONENT (R24K TYPE)
CAUTION:
Clean steering gear assembly with kerosene before disassembling.
DISASSEMBLY
1. Loosen outer socket lock nut, and then remove outer socket from inner socket.
2. Remove boot clamp, and then remove boot from inner socket.
CAUTION:
Do not damage inner socket and gear housing assembly when removing boot. Inner socket and
gear housing assembly must be replaced if inner socket and gear housing assembly are damaged
because it may allow foreign material to enter.
1. Outer socket 2. Inner socket 3. Rack assembly
4. Boot clamp (small diameter) 5. Boot 6. Boot clamp (large diameter)
7. Joint cover 8. Pinion seal 9. Snap ring
10. Pinion assembly 11. Gear housing assembly 12. Retainer
13. Spring 14. Adjusting screw 15. Lock nut
⇐ : Front
Refer to GI-8, "
HOW TO USE THIS MANUAL" for the symbols unless shown below.
:Apply Genuine Thread Locking Sealant, Three Bound 1141 or equivalent.
:1Apply Genuine Lithium Soap, Idemitsu Autorex A or equivalent.
:2Apply Genuine Lithium Soap, Wanlouver MO No.2 (manufactured by Kyoudouyushi) or equivalent.
:3Apply Genuine Lithium Soap, Multemp AC-P (manufactured by Kyoudouyushi) or equivalent.
WGIA0186E

PS-14
POWER STEERING GEAR
Revision: June 20062007 Versa
3. Remove inner socket from rack assembly while holding the flat portion of the rack next to the inner socket
using a suitable tool.
4. Measure adjusting screw height “H”, and loosen lock nut (2).
5. Remove adjusting screw (1), retainer (3) and spring (4) from
gear housing assembly (5).
INSPECTION AFTER DISASSEMBLY
Joint Cover
Check joint cover protrusion for damage. Replace if there are.
Rack and Pinion Assembly

Check pinion assembly for damage or wear. Replace as necessary.

Rotate pinion assembly and check for torque variation or rattle. Replace steering gear as necessary.
Gear Housing Assembly
Check gear housing assembly for damage or scratches. Replace steering gear as necessary.
Outer Socket and Inner Socket
1. Check ball joint swinging torque.

Hook a spring balance at the point shown and pull the spring
balance. Make sure that the spring balance reads the speci-
fied value when ball stud and inner socket start to move.
Replace outer socket and inner socket if they are outside the
standard.
2. Ball joint axial end play
SGIA1300E
SGIA0896E
Items Outer socket Inner socket
Measuring point of spring bal-
anceBall stud upper sideMeasuring point at * mark
shown in the figure
Swinging torque0.3 - 2.9 N·m
(0.03 - 0.29 kg-m, 3.0 - 25 in-lb)0.5 - 5.0 N·m
(0.06 - 0.51 kg-m, 5 - 44 in-lb)
Spring balance measurement6.0 - 58 N
(0.61 - 5.91 kg-f, 1.35 - 13.03 lb-f)4.3 - 43.5 N
(0.44 - 4.44 kg-f, 0.97 - 9.79 lb-f)

POWER STEERING GEAR
PS-15
C
D
E
F
H
I
J
K
L
MA
B
PS
Revision: June 20062007 Versa

Apply an axial load of 490 N (50 kg-f, 111 lb-f) to ball stud
using a dial gauge. Measure amount of stud movement, and
then make sure that the value is within the specified range.
Replace outer socket and inner socket if the measured value
is outside the standard.
ASSEMBLY
1. Apply recommended grease to teeth part and bush part of rack assembly, if necessary.
2. Apply recommended grease to back of rack assembly, if necessary.
3. Install inner socket to rack assembly. Torque to specified value while holding the flat portion of the rack
next to the inner socket using a suitable tool.
4. Apply recommended grease to inner socket. For application points, refer to PS-13, "
COMPONENT (R24K
TYPE)" .
5. Decide on the neutral position for the rack assembly.
6. Apply recommended grease to around retainer (3), then install
retainer (3), spring (4) and adjusting screw (1) to gear housing
assembly (5).
7. Apply recommended thread locking sealant to the thread (2
turns thread), and then screw in the adjusting screw (1) until it
reaches height “H” from gear housing assembly (5) measured
before disassembling.
8. Tighten lock nut to (2) the specified torque securing it to prevent
adjusting screw (1) from freewheeling condition.
9. Move rack assembly 10 strokes throughout the full stroke so that
the parts can fit with each other.
10. Using Tools A and B, measure rotating torque of pinion assem-
bly. If the measurement is outside of the specified range, read-
just pinion rotating torque. If the measurement is outside of the
specified range for readjust, replace steering gear assembly. Outer socket 0.5 mm (0.020 in) or less
Inner socket 0.2 mm (0.008 in) or less
SGIA0057E
Rack stroke “L” : 65.0 mm (2.559 in)
WGIA0185E
SGIA1300E
Tool numbers A: ST3127S000 (J-25742-1)
B: KV48103400 ( — )
Pinion rotating torque standard
Around neutral position
(within±100°) Average A0.3 - 1.5 N·m (0.03 - 0.15 kg-m,
3 - 13 in-lb)
Maximum variation C 1.86 N·m (0.19 kg-m, 16 in-lb)
MGIA0017E

PS-16
POWER STEERING GEAR
Revision: June 20062007 Versa
11. Set dial gauge to the back of rack assembly on the pinion
assembly side around the center of stroke. Measure displace-
ment of rack under torsional torque of ± 7.8 N·m (0.80 kg-m, 69
in-lb), and then check if it is within the standard value. If the
measurement is outside the standard value, adjust it again. After
the readjustment, if measurement is still outside the standard
value, replace steering gear assembly.
12. Install boot to gear housing assembly and inner socket.
13. Install boot clamp (1) to boot using Tool.
NOTE:
Install large diameter side boot clamp (1) securely to boot
groove, and crimp it so as to have clearance of 3 mm (0.12 in) or
less as shown.
14. Install joint cover (1) to gear housing assembly (2).
CAUTION:
Install joint cover so that the protrusion for locating is
securely set to gear housing groove.
15. Adjust inner socket to standard length “L”, and then tighten lock
nut to the specified torque. Refer to PS-13, "
COMPONENT
(R24K TYPE)" . Check length of inner socket “L” again after
tightening lock nut. Make sure that the length is the standard.
CAUTION:
Adjust toe-in. Refer to FSU-8, "
TOE-IN INSPECTION" .
Length achieved after toe-in adjustment is not necessarily
the above value.Standard value : Less than 0.1 mm (0.004 in)
SGIA1301E
Tool number : KV40107300 ( — )
SGIA1302E
SGIA1303E
Inner socket length “L” : 57.8 mm (2.276 in)
SGIA0167E