NISSAN TEANA 2003 Service Manual

POWER STEERING GEAR AND LINKAGE
PS-17
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POWER STEERING GEAR AND LINKAGEPFP:49001
Removal and InstallationBGS0003W
COMPONENTS
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
VQ23DE and VQ35DE Models
1. Set vehicle to the straight-ahead position.
2. Remove the clip, then remove lower cover.
3. Remove fixing nut and bolt, then separate lower shaft from
steering column assembly (joint part).
4. Remove tyres from vehicle.
5. Remove cotter pin of steering outer socket and steering knuckle
mounting point, and then loosen the nut.
6. Remove steering outer socket from steering knuckle so as not to
damage ball joint boot using the ball joint remover [suitable tool].
CAUTION:
Temporarily tighten the nut to prevent damage to threads
and to prevent the ball joint remover from suddenly coming
off.
1. Cotter pin 2. Steering gear assembly 3. Rack mounting bracket
4. Sleeve 5. Rack mounting insulator
Refer to GI-10, "
Components" , for the symbols in the figure.
SGIA1625E
SGIA0599E
SGIA0993E

PS-18
POWER STEERING GEAR AND LINKAGE

7. Remove high-pressure tube and low-pressure hose of hydraulic
piping, and then drain power steering fluid. Refer to PS-39,
"HYDRAULIC LINE" .
8. Remove fixing bolt (lower side) of lower shaft.
9. Remove mounting nut and bolts and remove rack mounting
bracket, rack mounting insulator and sleeve from vehicle, and
then remove steering gear assembly from vehicle.
QR20DE Models
1. Set vehicle to the straight-ahead position.
2. Remove the clip, then remove lower cover.
3. Remove fixing nut and bolt, then separate lower shaft from
steering column assembly (joint part).
4. Remove tyres from vehicle.
5. Remove undercover and splash guard.
6. Remove cotter pin of steering outer socket and steering knuckle
mounting point, and then loosen the nut.
7. Remove steering outer socket from steering knuckle so as not to
damage ball joint boot using the ball joint remover (suitable tool).
CAUTION:
Temporarily tighten the nut to prevent damage to threads
and to prevent the ball joint remover from suddenly coming
off.
SGIA0987E
SGIA0602E
SGIA0599E
SGIA0993E

POWER STEERING GEAR AND LINKAGE
PS-19
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8. Remove high-pressure tube and low-pressure hose of hydraulic
piping, and then drain power steering fluid. Refer to PS-39,
"HYDRAULIC LINE" .
9. Remove fixing bolt (lower side) of lower shaft.
10. Remove stabilizer connecting rod lower nut, and then separate
stabilizer connecting rod from stabilizer bar. Refer to FSU-7,
"Components" .
11. Remove mounting nut and bolt of transverse link ball joint, and
then remove transverse link from steering knuckle. Refer to
FSU-7, "
Components" .
12. Remove front exhaust tube. Refer to EX-2, "
EXHAUST SYS-
TEM" .
13. Remove steering hydraulic piping bracket from front suspension member and rear engine mounting insu-
lator. Refer to PS-39, "
HYDRAULIC LINE" .
14. Set jack under transaxle assembly.
15. Remove front engine mounting bracket and front engine mounting insulator mounting bolts. Refer to EM-
77, "ENGINE ASSEMBLY" .
16. Remove rear engine mounting bracket and rear engine mounting insulator mounting bolts. Refer to EM-
77, "ENGINE ASSEMBLY" .
17. Remove rear engine mounting insulator and front suspension member fixing nuts and bolts. Refer to EM-
77, "ENGINE ASSEMBLY" .
18. Set jack under front suspension member.
19. Loosen mounting nuts (front side) of front suspension member. Refer to FSU-7, "
Components" .
20. Remove mounting bolts (body side) of member stay, and then loosen nuts (front suspension member side
mounting point) of member stay. Refer to FSU-7, "
Components" .
21. Gradually lower jack to remove steering gear assembly mounting nut and bolts and remove rack mounting
bracket, rack mounting insulator and sleeve from vehicle, and then remove steering gear assembly from
vehicle.
INSTALLATION
Installation is the reverse order of removal. For tightening torque, refer to PS-17, "COMPONENTS" .

When installing lower shaft to steering gear assembly, follow the procedure listed below.
–Set rack of steering gear in the neutral position.
NOTE:
To get the neutral position of rack, turn pinion assembly and measure the distance of inner socket, and
then measure the intermediate position of the distance.
–Align rear cover cap projection (A) with the marking position (B)
of gear housing assembly.
–Install slit part of lower shaft (C) aligning with the projection (A)
of rear cover cap (1). Make sure that the slit part of lower shaft
(C) is aligned with both the projection (A) of rear cover cap (1)
and the marking position (B) of gear housing assembly.
–After installation, bleed air from the steering hydraulic system.
Refer to PS-39, "
HYDRAULIC LINE" .
–Perform final tightening of nuts and bolts on each part under
unladen conditions with tyres on level ground when removing
steering gear assembly. Check wheel alignment. Refer to FSU-
5, "Wheel Alignment Inspection" .
–Adjust neutral position of steering angle sensor after checking the wheel alignment for the models with
VDC. Refer to BRC-40, "
Adjustment of Steering Angle Sensor Neutral Position" .
INSPECTION AFTER INSTALLATION
Make sure that steering wheel operates smoothly by turning several times from full left stop to full right stop.
SGIA0987E
SGIA1140E

PS-20
POWER STEERING GEAR AND LINKAGE

Disassembly and AssemblyBGS0003X
COMPONENTS
CAUTION:

Disassemble and assemble steering gear assembly by securing the mounting area in a vise using
copper plates.

Clean steering gear assembly with kerosene before disassembling. Be careful to avoid splashing
or applying any kerosene over connector of discharge port or return port.
1. Rear cover cap 2. Rear cover 3. O-ring
4. Pinion assembly 5. Cylinder tube 6. Gear housing assembly
7. Outer socket 8. Boot clamp 9. Boot
10. Inner socket 11. Boot clamp 12. Rack oil seal
13. Rack assembly 14. Rack Teflon ring 15. O-ring
16. End cover assembly
Refer to GI-10, "
Components" , and the followings for the symbols in the figure.
: Apply power steering fluid.
: Apply Genuine Liquid Gasket, Three Bond 1111 B o r e q u i v a l e n t .
: Apply multi-purpose grease.
SGIA1617E

POWER STEERING GEAR AND LINKAGE
PS-21
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DISASSEMBLY
1. Remove cylinder tubes from gear housing assembly.
2. Remove rear cover cap from pinion assembly.
3. Using a rear cover wrench [SST: KV489Q0030] (A) to remove
rear cover from pinion assembly.
4. Remove O-ring using a flat-bladed screw driver, and pull out
rear cover.
5. Measure adjusting screw height “H”, and loosen adjusting
screw.
CAUTION:

Do not loosen adjusting screw 2 turns or more.

Replace steering gear assembly if adjusting screw is
loosened 2 turns or more and it is removed.
6. Remove pinion assembly from gear housing assembly.
7. Loosen outer socket lock nut, and remove outer socket.
8. 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 cause foreign material interfusion.
9. Drill out the clinching part of gear housing assembly (end cover
assembly side) outer rim with a 3 mm (0.12 in) drill bit. [Drill for
approximately 1.5 mm (0.059 in) depth].
SGIA1331E
SGIA0508E
SGIA0624E
STC0013D

PS-22
POWER STEERING GEAR AND LINKAGE

10. Remove end cover assembly with a 45 mm (1.77 in) open head
(suitable tool).
CAUTION:
Do not damage rack assembly surface when removing.
Rack assembly must be replaced if damaged because it
may cause fluid leakage.
11. Pull rack assembly together with rack oil seal (outer side) out
from gear housing assembly.
CAUTION:
Do not damage cylinder inner wall when removing rack
assembly. Gear housing assembly must be replaced if dam-
aged because it may cause fluid leakage.
12. Heat rack Teflon ring to approximately 40°C (104°F) with a
dryer, and remove rack Teflon ring and O-ring from rack assem-
bly.
CAUTION:
Do not damage rack assembly. Rack assembly must be
replaced if damaged, because it may cause fluid leakage.
13. Push rack oil seal inside with a 29 mm (1.14 in) socket and an
extension bar to push out rack oil seal (inner side) from gear
housing assembly.
CAUTION:
Do not damage gear housing assembly and cylinder inner
wall. Gear housing assembly must be replaced if damaged
because it may cause oil leakage.
SST081B
SGIA0151E
SGIA0179E

POWER STEERING GEAR AND LINKAGE
PS-23
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INSPECTION AFTER DISASSEMBLY
Boot
Check boot for cracks, and replace it if a malfunction is detected.
Rack Assembly
Check rack assembly for damage or wear, and replace it if a malfunction is detected.
Pinion Assembly

Check pinion assembly for damage or wear, and replace it if a malfunction is detected.

Rotate pinion and check for torque variation or rattle, and replace it if a malfunction is detected.
Gear Housing Assembly
Check gear housing assembly for damage and scratches (inner wall). Replace if there are.
Outer Socket and Inner Socket
1. Ball joint swinging torque

Hook a spring balance at the point shown in the figure and
pull the spring balance. Make sure that the spring balance
reads the specified value when ball stud and inner socket
start to move. Replace outer socket and steering gear assem-
bly if they are outside the standard.
2. Ball joint rotating torque

Make sure that the reading is within the following specified
range using the preload gauge [SST]. Replace outer socket if
the reading is outside the specified value.
SGIA0896E
Items Outer socket Inner socket
Measuring point of spring balance Stud cotter pin mounting hole Measuring point at *mark shown in the figure
Swinging torque0.3 – 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)
Spring balance measurement 4.84 – 46.7 N (0.5 – 4.8 kg, 1 – 10 lb) 12.1 – 93.7 N (1.2 – 9.6 kg, 3 – 21 lb)
Outer socket rotating torque 0.3 – 2.9 N·m (0.03 – 0.29 kg-m, 3 – 25 in-lb)
SGIA0083E

PS-24
POWER STEERING GEAR AND LINKAGE

3. Ball joint axial end play

Apply an axial load of 490 N (50 kg, 111 lb) to ball stud using a
dial indicator. Measure amount of stud movement, and then
make sure that the value is within the following specified
range. Replace outer socket and inner socket if the measured
value is outside the standard.
ASSEMBLY
1. Apply recommended fluid to O-ring. Put an O-ring into a rack Teflon ring.
2. Heat rack Teflon ring to approximately 40°C (104°F) with a
dryer. Assemble it to mounting groove of rack assembly.
3. Install the Teflon ring correcting tool [SST: KV489Q0020] (A)
from tooth side of rack to fit rack Teflon ring (1) on rack. Com-
press the ring with tool.
4. Apply recommended grease to rack oil seal, and then install
rack oil seal in the following procedure. Then assemble rack
assembly to gear housing assembly.
NOTE:
Do not reuse rack oil seal.
CAUTION:

Install rack oil seal in a direction so that the lip of inner oil
seal and the lip of outer oil seal face each other.

Do not damage retainer sliding surface by rack assembly.
Replace gear housing assembly if damaged.

Do not damage gear housing assembly inner wall by rack
assembly. Gear housing assembly must be replaced if damaged because it may cause fluid
leakage.
Outer socket 0.5 mm (0.020 in) or less
Inner socket 0.2 mm (0.008 in) or less
SGIA0057E
SGIA0153E
SGIA1324E
SGIA0205E

POWER STEERING GEAR AND LINKAGE
PS-25
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a. Wrap an OHP sheet [approximately 70 mm (2.76 in) ×100 mm
(3.94 in)]. Around rack assembly teeth to avoid damaging rack
oil seal (inner). Install rack oil seal over sheet. Then, pull OHP
sheet along with rack oil seal until they pass rack assembly
teeth, and remove OHP sheet.
b. Insert rack oil seal (inner) into rack assembly piston (rack Teflon
ring).
c. Push retainer to adjusting screw side by hand, and move the
rack assembly inside the gear housing assembly so that the
rack oil seal (inner) can be pressed against the gear housing
assembly
d. Wrap an OHP sheet [approximately 70 mm (2.76 in) ×100 mm
(3.94 in)]. Around the edge to avoid damaging rack oil seal
(outer). Install rack oil seal over sheet. Then, pull oil seal along
with OHP sheet until they pass rack edge, and remove OHP
sheet.
e. Install end cover assembly to rack edge, and move rack oil seal
(outer) until it contacts with gear housing assembly.
5. Tighten end cover assembly to specified torque using a 45 mm
(1.77 in) open head (suitable tool).
CAUTION:
Do not damage rack assembly. Replace it if damaged
because it may cause fluid leakage.
6. Crimp gear housing assembly at one point using a punch as
shown in the figure so as to prevent end cover assembly from
getting loose after tightening end cover assembly.
SGIA0155E
SGIA0671E
SGIA0157E
SST081B
SGIA0871E

PS-26
POWER STEERING GEAR AND LINKAGE

7. Install pinion assembly to gear housing assembly.
CAUTION:
In order to protect rack oil seal from any damage, insert pinion assembly out straightly.
8. Apply recommended fluid to O-ring, and the install O-ring to rear cover.
9. Using a rear cover wrench [SST: KV489Q0030] (A), install rear
cover to gear housing assembly.
10. Decide on the neutral position for the rack.
11. Install rear cover cap to pinion assembly.
CAUTION:
Make sure that the projection of rear cover cap is aligned
with the marking position of gear housing assembly.
12. Apply recommended thread locking sealant to the thread (2
turns thread), and then screw in the adjusting screw until it
reaches height “H” from gear housing assembly measured
before disassembling.
13. Move rack assembly 10 strokes throughout the full stroke so that
the parts can fit with each other.
14. Measure pinion rotating torque within ±180° of neutral position
of the rack assembly using the preload gauge [SST] and preload
adapter [SST]. Stop the gear at the point where highest torque is
read.
15. Loosen adjusting screw and retighten to 5.4 N·m (0.55 kg-m, 48
in-lb), and then loosen by 20 to 40°.
SGIA1331E
Tire size 205/65R16 215/55R17
Rack stroke L 73.5 mm (2.894 in) 68.5 mm (2.697 in)
SGIA0877E
SGIA0624E
STC0036D