steering NISSAN 350Z 2007 Z33 Power Steering System User Guide

PS-12
STEERING COLUMN
Revision: 2006 November2007 350Z
e. Yoke will be removed from collar, when steering column assem-
bly is lifted about 45° oblique upward.
f. Collar remains on lower shaft.
12. Remove bolts and nut from steering member, remove steering
column assembly from steering member.
13. Remove collar from lower shaft.
14. Remove hole cover seal from lower shaft.
15. Remove mounting bolts, then remove hole cover from panel.
16. Raise vehicle, then loosen bolt for lower yoke of lower joint and
remove joint together with lower shaft.
SGIA0355E
SGIA0356E
SGIA0373E
SGIA0765E

STEERING COLUMN
PS-13
C
D
E
F
H
I
J
K
L
MA
B
PS
Revision: 2006 November2007 350Z
INSPECTION AFTER REMOVAL

Check if there is something wrong with jacket tube of steering column assembly and collar etc. And then if
they are damaged, replace with new one.

If vehicle has a collision light shocked, check column length “L”
as shown in the figure. Then if it is out of the specified value,
replace with new one.

Check the turning torque of steering column with preload gauge
(SST: ST3127S000 [J-25765-A]). If it is out of the specified
value, repair it or replace with new one.
INSTALLATION
1. Install collar to lower shaft.
2. Install yoke of column shaft to collar, tack bolt and nut.Specified value
Steering column length “L”: 548 mm (21.57 in)
Specified value
Turning torque : 0 - 0.2 N·m (0 - 0.02 kg-m, 0 - 2 in-lb)
SGIA0306J
SGIA0356E
SGIA0353E

PS-14
STEERING COLUMN
Revision: 2006 November2007 350Z
3. Put steering column assembly (installation hole “P”) on bolt for
steering member side and install nut “A” then tighten it together
with the other bolts at the specified torque.
4. Connect yoke and collar with bolt, tighten nut at the specified
torque.
INSPECTION AFTER INSTALLATION

After installing steering column to vehicle, check tilt device and
its operation range “L
1” , “L2” .

Check if steering operation can turn to the end of the left and
right smoothly.
SGIA0371E
Tilt operating range “L1 ” : 28 - 32 mm (1.10 - 1.26 in)
“L
2 ” : 13 - 17 mm (0.51 - 0.67 in)
SGIA1456E

STEERING COLUMN
PS-15
C
D
E
F
H
I
J
K
L
MA
B
PS
Revision: 2006 November2007 350Z
Disassembly and AssemblyNGS0000D
COMPONENTS
DISASSEMBLY
1. Remove steering column shaft lock nut, then remove steering column shaft from front side of jacket tube.
2. Remove tilt device from jacket tube.
3. Remove lock nut and adjusting stopper according to the following procedure.
a. Turn tilt lever to the unlock side.
b. Remove spring from column mounting bracket.
1. Steering column shaft 2. Adjusting bolt 3. Adjusting stopper
4. Jacket tube 5. Steering column shaft lock nut 6. Spring
7. Column mounting bracket 8. Tilt lever stopper 9. Tilt lever
10. Lock nut
SGIA0340E
SGIA0742E

PS-16
STEERING COLUMN
Revision: 2006 November2007 350Z
c. Lock adjusting bolt, then remove lock nut.
d. Remove adjusting bolt, adjusting stopper, column mounting
bracket, tilt lever stopper and tilt lever from jacket tube.
INSPECTION AFTER DISASSEMBLY

Check if there is something wrong with steering column shaft and bearing. And then if they are damaged,
replace with new one.

Check if there is something wrong with the component of tilt device. And then if it is damaged, replace
with new one.
ASSEMBLY
1. Install tilt device to jacket tube. Refer to PS-15, "Disassembly and Assembly" .
NOTE:

Turn tilt lever to unlock side while at work to make it easier.

That can avoid column shaft's sudden descent when tilt lever
is operated on vehicle.
2. When tilt lever is in the locked position (operation range is about
40°), tighten lock nut at the specified torque to make tilt lever
locked.
3. Apply grease to the part shown in the figure of component. Refer
to PS-15, "
Disassembly and Assembly" .
4. Install steering column shaft to jacket tube, tighten steering col-
umn shaft lock nut at the specified torque.
SGIA0343E
SGIA0344E
SGIA0346E
Tightening torque:
13.5 - 18.6 N·m (1.4 - 1.8 kg-m, 10 - 13 ft-lb)
Tightening torque : 25 - 34 N·m (2.6 - 3.4 kg-m, 19 - 25 ft-lb)
SGIA0347E

POWER STEERING GEAR AND LINKAGE
PS-17
C
D
E
F
H
I
J
K
L
MA
B
PS
Revision: 2006 November2007 350Z
POWER STEERING GEAR AND LINKAGEPFP:49001
Removal and InstallationNGS0000E
COMPONENTS
CAUTION:
Spiral cable may snap due to steering operation if steering column is separated from steering gear
assembly. Therefore fix steering wheel with a string to avoid turns.
REMOVAL
1. Set wheels in the straight-ahead position.
2. Remove undercover and tires from vehicle with power tool.
3. Remove front crossbar. Refer to FSU-8, "
Components" .
4. Confirm slit of lower joints fits with the projection on rear cover
cap, furthermore marking position on steering gear assembly
nearly fits with the projection on rear cover cap.
5. Remove cotter pin at steering outer socket, then loosen mount-
ing nut.
6. Use a ball joint remover (SST) to remove steering outer socket
from steering knuckle. Be careful not to damage ball joint boot.
CAUTION:
Tighten temporarily mounting nut to prevent damage to
threads and to prevent ball joint remover (SST) from com-
ing off.
7. Remove oil pipings (high pressure side and low pressure side)
from steering gear assembly, then drain fluid from pipings.
1. Cotter pin 2. Steering gear assembly 3. Rack mounting insulator
4. Rack mounting bracket
Refer to GI-11, "
Components" , for the symbols in the figure.
SGIA1471E
SGIA0349E
SGIA0341E

PS-18
POWER STEERING GEAR AND LINKAGE
Revision: 2006 November2007 350Z
8. Loosen bolt on upper yoke of lower joint and remove bolt on
lower yoke of joint, then slide lower joint into lower shaft. Sepa-
rate steering gear assembly from lower shaft.
9. Tack bolt on upper yoke of lower joint, fix lower joint to lower
shaft.
10. Remove the fixing bolt and remove steering gear assembly, rack
mounting bracket and insulator from vehicle.
INSTALLATION

Refer to PS-17, "Removal and Installation" for tightening torque. Install in the reverse order of removal.
NOTE:
Refer to component parts location and do not reuse non-reusable parts.

After removing/installing or replacing steering components, check wheel alignment. Refer to FSU-6,
"Wheel Alignment Inspection" .

When steering wheel is set in the straight ahead direction, con-
firm slit of lower joint fits with the projection on rear cover cap,
furthermore marking position on steering gear assembly nearly
fits with the projection on rear cover cap.

After installation, bleed air from piping. Refer to PS-6, "Air
Bleeding Hydraulic System" .
SGIA0367E
SGIA0348E
SGIA1753E

POWER STEERING GEAR
PS-19
C
D
E
F
H
I
J
K
L
MA
B
PS
Revision: 2006 November2007 350Z
POWER STEERING GEARPFP:49001
Disassembly and AssemblyNGS000B1
COMPONENTS
1. Outer socket 2. Boot clamp 3. Boot
4. Inner socket 5. Boot clamp 6. End cover assembly
7. Rack oil seal 8. Rack Teflon ring 9. O-ring A
10. Rack assembly 11. Rack oil seal 12. Gear housing assembly
13. Cylinder tube 14. Gear-sub assembly 15. Rear cover cap
16. O-ring B 17. Retainer 18. Spring
19. Adjusting screw
Refer to GI-11, "
Components" , and the followings for the symbols in the figure.
:A p p l y G e n u i n e T h r e a d L o c k i n g S e a l a n t , T h r e e B o u n d 1111 B o r e q u i v a l e n t .
SGIA1745E

PS-20
POWER STEERING GEAR
Revision: 2006 November2007 350Z
CAUTION:

Secure steering gear assembly with a vise, using copper
plates or something similar to prevent it from being dam-
aged. Do not grip cylinder with a vise.

Before performing disassembly, clean steering gear assem-
bly with kerosene. Be careful not to bring any kerosene into
contact with the discharge and return port connectors.
DISASSEMBLY
1. Remove cylinder tubes from gear housing assembly.
2. Remove rear cover cap from gear-sub assembly.
3. Measure adjusting screw height from gear housing assembly,
then loosen adjusting screw.
CAUTION:

Do not turn adjusting screw more than twice.

Replace steering gear assembly when adjusting screw is
removed or more than twice.
4. Remove fixing bolts of gear-sub assembly, and then remove
gear-sub assembly from gear housing assembly.
5. Remove O-ring B from gear housing assembly.
6. Loosen lock nut of outer socket, and remove outer socket.
7. Remove boot clamps of the small diameter side and the large
diameter side, then remove boots.
CAUTION:
On removing boots, be careful not to damage the inner socket and the gear housing assembly. If
they are is damaged, change them to avoid oil leaks.
8. Drill out the clinching part of cylinder outer rim with a 3 mm (0.12
in) drill in 1.5 mm (0.059 in) depth.
9. Remove end cover assembly with a 42 mm (1.65 in) open head
(suitable tool).
CAUTION:
Be careful not to damage rack. If it is damaged, replace
rack. Otherwise, oil leaks may result.
10. Pull rack with rack oil seal out of gear housing assembly.
CAUTION:
Be careful not to damage cylinder. If it is damaged, replace
gear housing assembly. Otherwise, oil leaks may result.
:Apply multi-purpose grease.
:Apply Genuine NISSAN PSF or equivalent.
SGIA0360E
SGIA0568E
STC0013D
SST081B

POWER STEERING GEAR
PS-21
C
D
E
F
H
I
J
K
L
MA
B
PS
Revision: 2006 November2007 350Z
11. Heat rack Teflon ring to approximately 40°C (104°F) with a
dryer, then remove it and O-ring A from rack assembly.
CAUTION:
Be careful not to damage rack. If it is damaged, change to a
new one to avoid oil leaks.
12. Use a taped 29 mm (1.14 in) socket and an extension bar.
Remove rack oil seal from gear housing assembly.
CAUTION:
Be careful not to damage gear housing assembly and cylin-
der inner wall. If it is damaged, gear housing assembly
must be replaced. Otherwise, oil leaks will result.
INSPECTION AFTER DISASSEMBLY
Boot
Check boot for cracks and deformation. Replace it, if necessary.
Rack Assembly
Check rack for damage and wear. Replace it, if necessary.
Gear-sub Assembly

Check pinion gear for damage or wear. Replace if necessary.

Rotate pinion and check for torque variation or rattle. Replace if necessary.
Gear Housing Assembly
Check gear housing assembly for damage and scratches (inner wall). Replace it, if necessary.
Outer Socket and Inner Socket
Swing Torque

Hook a spring balance at the point shown in the figure. Confirm
if the reading is within the specification. When ball stud and
inner socket start moving the measured value must be within the
specification. If the reading is outside the specification, replace
socket.
SGIA0151E
SGIA0179E
SGIA0358E