Content .. 1758 1759 1760 1761 ..

Infiniti FX35, FX50 (S51). Manual - part 1760

ST-32

< REMOVAL AND INSTALLATION >

STEERING GEAR AND LINKAGE

Apply recommended sealant into the thread of inner socket.
Use Genuine Silicone RTV or equivalent.

Screw inner socket into rack part and tighten at the specified torque.

10. Decide on the neutral position of the rack stroke (L).

11. Install rear cover cap to gear sub-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 sealant to the thread of adjusting

screw (2 turns thread), and then screw in the adjusting screw
until it reaches height “H” from gear housing assembly mea-
sured before disassembling.
Use Genuine High Performance Thread Sealant or equiva-
lent.

13. Move rack assembly 10 strokes throughout the full stroke so that

the parts can fit with each other.

14. Adjust pinion rotating torque with the following procedure.

Measure pinion rotating torque within

180

of neutral position

of the rack assembly using Tools. Stop the gear at the point
where highest torque is read.

Loosen adjusting screw and retighten to 5.4 N·m (0.55 kg-m, 48
in-lb), and then loosen by 20 to 40

Measure pinion rotating torque using tools to make sure that the
measured value is within the standard. Readjust if the value is
outside the standard. Replace steering gear assembly, if the
value is outside the standard after readjusting, or adjusting
screw rotating torque is 5 N·m (0.51 kg-m, 44 in-lb) or less.

Apply recommended sealant to inner socket and turn pinion fully to left with inner socket installed to gear
housing assembly.

Standard

: Refer to

ST-51, "Rack

Stroke"

SGIA0877E

SGIA0624E

A: Preload gauge [SST: ST3127S000 (J-25765-A)]

B: Preload adapter [SST: KV48103400 (

—

)]

SGIA1383E

Pinion rotating torque

Around neutral position
(within

100

) average “A”

: 2.27 – 3.05 N·m (0.24 –
0.31 kg-m, 20 – 26 in-lb)

Maximum variation “B”

: 0.98 N·m (0.10 kg-m, 9.0
in-lb)

SGIA0936E

STEERING GEAR AND LINKAGE

ST-33

< REMOVAL AND INSTALLATION >

Install dial gauge at 5 mm (0.20 in) (L) from the edge of gear
housing assembly (1), and tooth point.

Measure vertical movement of rack assembly when pinion is
turned clockwise with torque of 19.6 N·m (2.0 kg-m, 14 ft-lb).
Readjust adjusting screw angle if the measured value is outside
the standard.

• If reading is outside of the specification, readjust screw angle

with adjusting screw.

CAUTION:

• If reading is still outside of specification, or if the rotating torque of adjusting screw is less

than 5 N·m (0.51 kg-m, 44 in-lb), replace steering gear assembly.

• Never turn adjusting screw more than twice.
• Replace steering gear assembly when adjusting screw is removed or turned more than twice.

15. Install large end of boot to gear housing assembly.

16. Install small end of boot to inner socket boot mounting groove.
17. Install boot clamp to boot small end.

18. Install boot clamp to the large side of boot with the following procedure.

CAUTION:

Never reuse boot clamp.

Tighten large side of boot with boot clamp (stainless wire).

Wrap clamp around boot groove for two turns. Insert a flat-
bladed screwdriver in loops on both ends of wire. Twist 4 to 4.5
turns while pulling them with force of approximately 98 N (10 kg,
22 lb).

Twist boot clamp as shown. Pay attention to relationship
between winding and twisting directions.

Vertical movement

: 0.265 mm (0.0104 in)

JSGIA0104ZZ

SGIA1325E

Wire length (L)

: 370 mm (14.57 in)

SGIA0163E

SGIA0164E

ST-34

< REMOVAL AND INSTALLATION >

STEERING GEAR AND LINKAGE

Twisted area (A) of clamp is in the adjusting screw side (1) as
shown in the figure (to prevent contact with other parts).

Bent cut end of the wire toward rack axial as shown in the figure
after twisting the wire 4 to 4.5 turns so that cut end does not con-
tact with boot.

CAUTION:

Keep gap from cylinder tube 5 mm (0.20 in) or more.

19. Install cylinder tubes to gear housing assembly.

20. Install low pressure piping.
21. Adjust inner socket to standard length (L), and then tighten lock

nut to the specified torque. Check length again after tightening
lock nut.

CAUTION:

Adjust toe-in after this procedure. The length achieved after
toe-in adjustment is not necessary the above value.

Inspection

INFOID:0000000005235285

INSPECTION AFTER INSTALLATION

• Check if steering wheel turns smoothly when it is turned several times fully to the end of the left and right.
• Check the steering wheel play, neutral position steering wheel, steering wheel turning force, and front wheel

turning angle. Refer to

ST-14, "Inspection"

• Check the fluid level, fluid leakage, and air bleeding hydraulic system. Refer to

ST-12, "Inspection"

INSPECTION AFTER DISASSEMBLY

Boot

Check boot for cracks, and replace it if a malfunction is detected.

Rack Assembly

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

Gear-Sub Assembly

• Check gear-sub assembly for damage or wear, and replace it if a malfunction is detected.
• Rotate gear-sub assembly 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

: 90

JSGIA0759ZZ

STC0124D

Standard

: Refer to

ST-51, "Inner

Socket Length"

SGIA0167E

STEERING GEAR AND LINKAGE

ST-35

< REMOVAL AND INSTALLATION >

Check the following items and replace the component if it does not meet the standard.

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 speci-
fied value when ball stud and inner socket start to move. Replace
outer socket and inner socket if they are outside the standard.

BALL JOINT ROTATING TORQUE

Make sure that the reading is within the following specified range
using preload gauge (A) [SST: ST3127S000 (J-25765-A)]. Replace
outer socket if the reading is outside the specified value.

BALL JOINT AXIAL END PLAY

Apply an axial load of 490 N (50 kg, 110 lb) to ball stud. Using a dial
gauge, measure amount of stud movement, and then make sure that
the value is within the following specified range. Replace outer
socket (1) and inner socket (2) if the measured value is outside the
standard.

Standard

(Measuring point of outer socket: Stud cotter pin
mounting hole)

Outer socket

: Refer to

ST-51, "Socket

Swing Force and Rotating
Torque"

Standard

(Measuring point of inner socket: “*” mark shown in
the figure)

Inner socket

: Refer to

ST-51, "Socket

Swing Force and Rotating
Torque"