Infiniti QX56 (Z62). Manual - part 1258

 

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Infiniti QX56 (Z62). Manual - part 1258

 

 

ST-42

< REMOVAL AND INSTALLATION >

STEERING GEAR AND LINKAGE

Vehicle speed sensitive type

Removal and Installation

INFOID:0000000006225608

REMOVAL

1.

Set vehicle to the straight-ahead position.

2.

Remove tires.

3.

Remove front final drive assembly. Refer to 

DLN-162, "Removal and Installation"

.

10. Retainer

11.

O-ring

12. Low pressure piping

13. Gear-sub assembly

14. Rear cover cap

15. Cylinder tubes

: Apply power steering fluid.

 

: Apply Genuine High Strength Thread Locking Sealant or equivalent. Refer to 

GI-22, "Recommended Chemical Products 

and Sealants"

.

: Apply Genuine Liquid Gasket, Three Bond 1111B or equivalent.

: Apply multi-purpose grease.

Refer to 

GI-4, "Components"

 for symbols not described on the above.

JPGIA0073GB

1.

Outer socket

2.

Boot clamp

3.

Boot

4.

Inner socket

5.

Boot clamp

6.

Gear housing assembly

7.

Adjusting screw

8.

Adjusting screw lock nut

9.

Spring

10. Retainer

11.

O-ring

12. Low pressure piping

13. Power steering solenoid valve

14. Gear-sub assembly

15. Rear cover cap

16. Cylinder tubes

: Apply power steering fluid.

 

: Apply Genuine High Strength Thread Locking Sealant or equivalent. Refer to 

GI-22, "Recommended Chemical Products 

and Sealants"

.

: Apply Genuine Liquid Gasket, Three Bond 1111B or equivalent.

: Apply multi-purpose grease.

Refer to 

GI-4, "Components"

 for symbols not described on the above.

STEERING GEAR AND LINKAGE

ST-43

< REMOVAL AND INSTALLATION >

C

D

E

F

H

I

J

K

L

M

A

B

ST

N

O

P

4.

Remove cotter pin (1), and then loosen the nut.

5.

Remove steering outer socket (2) from steering knuckle (3) so
as not to damage ball joint boot (4) using suitable ball joint
remover (commercial service tool).

CAUTION:

Temporarily tighten the nut to prevent damage to threads
and to prevent the ball joint remover from suddenly coming
off.

6.

Remove high pressure piping and low pressure piping of
hydraulic piping, and then drain power steering fluid.

7.

Remove power steering solenoid valve harness connector.

8.

Remove lower joint fixing bolt (steering gear side).

9.

Separate the lower joint from the steering gear assembly. Refer to 

ST-37, "Exploded View"

CAUTION:

• When removing lower joint, never insert a tool, such as a screwdriver, into the yoke groove to

pull out the lower joint. In case of the violation of the above, replace lower joint with a new one.

• Spiral cable may be cut if steering wheel turns while separating steering column assembly and

steering gear assembly. Be sure to secure steering wheel using string to avoid turning.

10. Remove steering gear assembly.

INSTALLATION

Note the following, and install in the reverse order of removal.

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.
• When installing lower joint 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 gear-sub 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 of

gear housing assembly (B).

- Install slit part of lower joint (C) aligning with the rear cover cap

projection (A). Make sure that the slit part of lower joint (C) is
aligned with rear cover cap projection (A) and the marking position
of gear housing assembly (B).

• Never reuse cotter pin and steering gear mounting nut.
• Perform inspection after installation. Refer to 

ST-46, "Inspection"

.

Disassembly and Assembly

INFOID:0000000006225609

DISASSEMBLY

CAUTION:

• Disassemble and assemble steering gear assembly by fixing the mounting area with 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.

Remove cylinder tubes from gear housing assembly.

2.

Remove rear cover cap from gear-sub assembly.

PGIA0063E

: Bolt

JPGIA0038ZZ

ST-44

< REMOVAL AND INSTALLATION >

STEERING GEAR AND LINKAGE

3.

Measure adjusting screw height (H), and loosen adjusting screw
lock nut (1) and adjusting screw (2).

CAUTION:

• Never loosen adjusting screw 2 turns or more.
• Replace steering gear assembly if adjusting screw is

loosened 2 turns or more and it is removed.

4.

Remove gear-sub assembly from gear housing assembly.

5.

Remove O-ring from gear housing assembly.

6.

Loosen outer socket lock nut, and remove outer socket.

7.

Remove boot clamps, and then remove boot from inner socket.

CAUTION:

Never 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.

8.

Remove inner socket from gear housing assembly.

ASSEMBLY

1.

Apply recommended fluid to O-ring, and then install O-ring to gear housing assembly.

CAUTION:

Never reuse O-ring.

2.

Install gear-sub assembly to gear housing assembly.

CAUTION:

In order to protect oil seal from any damage, insert gear-sub assembly straightly.

3.

Install inner socket to gear housing assembly with the following procedure.

a.

Apply thread locking sealant into the thread of inner socket.
Use Genuine High Strength Thread Locking Sealant or equivalent. Refer to 

GI-22, "Recommended

Chemical Products and Sealants"

.

4.

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

5.

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

6.

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.

7.

Install adjusting screw with the following procedure.

a.

Apply recommended sealant into the thread of adjusting screw
(2) (2 turns thread), and then screw in the adjusting screw until it
reaches height (H) from gear housing assembly (3) measured
before disassembling.
Use Genuine Liquid Gasket Gasket, Three Bond 1111B or
equivalent.

b.

Tighten the adjusting screw lock nut (1) to the specified torque.

8.

Move rack assembly 10 strokes throughout the full stroke so that
the parts can fit with each other.

9.

Adjust pinion rotating torque with the following procedure.

3

: Gear housing assembly

JPGIA0065ZZ

L

: Refer to 

ST-58, "Rack Stroke"

.

SGIA0877E

JPGIA0065ZZ

STEERING GEAR AND LINKAGE

ST-45

< REMOVAL AND INSTALLATION >

C

D

E

F

H

I

J

K

L

M

A

B

ST

N

O

P

a.

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.

b.

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

°

.

c.

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.

d.

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

e.

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

f.

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.

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

B: Preload adapter [SST: KV48103400 (

)]

SGIA1383E

Pinion rotating torque (engine speed sensitive type)

Around neutral position 
(within

±

100

°

) average “A”

: 1.16 – 1.31 N·m (0.12 – 
0.13 kg-m, 10.3 – 11.5 in-lb)

Maximum variation “B”

: 1.43 N·m (0.15 kg-m, 13 
in-lb)

Pinion rotating torque (vehicle speed sensitive type)

Around neutral position 
(within

±

100

°

) average “A”

: 1.10 – 1.41 N·m (0.12 – 
0.14 kg-m, 10 – 12 in-lb)

Maximum variation “B”

: 1.43 N·m (0.15 kg-m, 13 
in-lb)

Vertical movement

: 0.265 mm (0.0104 in)

PGIA0084E

JSGIA0104ZZ

 

 

 

 

 

 

 

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