torque NISSAN 350Z 2007 Z33 Power Steering System Workshop Manual

PREPARATION
PS-3
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Revision: 2006 November2007 350Z
PREPARATIONPFP:00002
Special Service ToolsNGS00004
The actual shapes of Kent-Moore tools may differ from those of special service tools illustrated here.
Tool number
(Kent-Moore No.)
Tool nameDescription
ST27180001
(J-25726-A)
Steering wheel pullerRemoving steering wheel
HT72520000
(J-25730-A)
Ball joint remover
a: 33 mm (1.30 in)
b: 50 mm (1.97 in)
r: 11.5 mm (0.453 in)Removing outer socket ball joint
ST3127S000
(See J-25765-A)
Preload gauge
1. GG9103000
(J-25765-A)
Torque wrench
2. HT62940000
( – )
Socket adapter
3. HT62900000
( – )
Socket adapterInspecting of rotating torque
KV48104400
( – )
Teflon ring installation tool
a: 50 mm (1.97 in) dia.
b: 36 mm (1.42 in) dia.
c: 100 mm (3.94 in)Installing of rack Teflon ring
KV48103400
( – )
Torque adapterInspecting rotating torque
S-NT544
NT546
S-NT541
S-NT550
ZZA0824D

NOISE, VIBRATION AND HARSHNESS (NVH) TROUBLESHOOTING
PS-5
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Revision: 2006 November2007 350Z
NOISE, VIBRATION AND HARSHNESS (NVH) TROUBLESHOOTINGPFP:00003
NVH Troubleshooting ChartNGS00006
Use chart below to help you find the cause of the symptom. If necessary, repair or replace these parts.
×: ApplicableReference page
PS-6PS-6PS-21PS-21PS-21PS-6PS-7PS-21EM-12PS-7PS-15PS-17PS-10PS-10PS-17
NVH in PR section
NVH in RFD section
NVH in FAX, RAX, FSU, RSU section
NVH in WT section
NVH in WT section
NVH in RAX section
NVH in BR section
Possible cause and suspected parts
Fluid level
Air in hydraulic system
Outer socket ball joint swinging force
Outer socket ball joint sliding torque
Outer socket ball joint end play
Steering fluid leakage
Steering wheel play
Steering gear rack sliding force
Drive belt looseness
Improper steering wheel
Improper installation or looseness of tilt lock lever
Mounting rubber deterioration
Steering column deformation or damage
Improper installation or looseness of steering column
Steering linkage looseness
PROPELLER SHAFT
DIFFERENTIAL
AXLE and SUSPENSION
TIRES
ROAD WHEEL
DRIVE SHAFT
BRAKES
SymptomNoise× × ××××× × × ×××××× ×
Shake××× × ×××× ×
Vibration××××× × ×× ×
Shimmy××× × ××× ×
Judder××××××

STEERING WHEEL
PS-9
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Revision: 2006 November2007 350Z
Removal and InstallationNGS0000B
REMOVAL
NOTE:
When reconnecting spiral cable, fix cable with a tape so that fixing 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-40, "
Removal and Installation" .
3. Remove steering wheel lock nut after steering is locked.
4. Remove steering wheel with the steering wheel puller A.
INSTALLATION
Installation is the reverse order of removal. For tightening torque, refer to PS-10, "Removal and Installation" .
NOTE:
Check the spiral cable neutral position after replacing or rotating spiral cable. Refer to SRS-42, "
Removal and
Installation" . Tool number A: ST27180001 (J-25726-A)
SGIA1323E

STEERING COLUMN
PS-13
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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

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

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-21
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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

PS-22
POWER STEERING GEAR
Revision: 2006 November2007 350Z
Specified value
Rotating Torque

Using a preload gauge (SST), check if reading is within the
value specified below. If the value is outside the standard,
replace outer sockets.
Axial End Play

Apply load of 490 N (50 kg,110 lb) to ball stud axially. Use a dial-
gauge to measure the amount of the movement that the stud
makes. Check if the reading is within the specified below. If the
value is outside the standard, replace outer and inner sockets.
ASSEMBLY
1. Apply recommended fluid to O-ring A. Put an O-ring A into rack Teflon ring.
NOTE:
Do not reuse O-ring A.
2. Heat rack Teflon ring to approximately 40°C (104°F) with a
dryer. Assemble it to mounting groove of rack.
NOTE:
Do not reuse rack Teflon ring.
Item Outer socket Inner socket
Measuring point Cotter-pin hole of stud shown as L: 48.5 mm (1.909 in)
Swing torque 0.3 - 2.9 N·m (0.03 - 0.29 kg-m, 3 - 25 in-lb) 1.0 - 7.8 N·m (0.11 - 0.79 kg-m, 9 - 69 in-lb)
Measuring value 4.42 - 42.7 N (0.5 - 4.4 kg, 1 - 10 lb) 10 - 78 N (1 - 8 kg, 2 - 18 lb)
Rotating torque 0.3 - 2.9 N·m (0.03 - 0.29 kg-m, 3 - 25 in-lb)
SGIA0941E
Outer socket 0.5 mm (0.020 in) or less
Inner socket 0.2 mm (0.008 in) or less
SGIA1437E
SGIA0153E

PS-24
POWER STEERING GEAR
Revision: 2006 November2007 350Z
c. When installing outer rack oil seal, cover the end of rack with an
OHP sheet [70 mm (2.76 in) × 100 mm (3.94 in)]. It will avoid
damaging rack oil seal. Then place oil seal on sheet. Pull rack oil
seal along with OHP sheet until they pass rack end. Then
remove OHP sheet.
d. Install end cover assembly to rack, move it to gear housing
assembly.
5. Using a 42 mm (1.65 in) open head (suitable tool), tighten end
cover assembly at the specified torque.
CAUTION:
Do not damage rack surface. If it is damaged, it may cause
oil leaks. Replace rack assembly.
6. After tightening end cover assembly, caulk cylinder at one point
as shown in the figure using a punch. This will prevent end cover
from getting loose.
7. Apply recommended fluid to O-ring B. Install O-ring B to gear
housing assembly.
NOTE:
Do not reuse O-ring B.
8. Install gear-sub assembly to gear housing assembly.
9. Decide neutral position of rack.
10. Install the projection part (Tip) of rear cover cap to gear-sub
assembly as shown in the figure.
SGIA0157E
SST081B
SGIA0158E
Rack stroke “L” : 64.5 mm (2.539 in)
SGIA0629J
SGIA1753E