Nissan Quest E52. Manual - part 1175

ST-26

< REMOVAL AND INSTALLATION >

STEERING GEAR AND LINKAGE

2.

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.

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.

• Never damage retainer sliding surface by rack assembly.

Replace gear housing assembly if damaged.

• Never damage gear housing assembly inner wall by rack

assembly. Gear housing assembly must be replaced if
damaged because it may cause fluid leakage.

• Never reuse rack oil seal.

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.

Apply recommended grease to rack spacer.

f.

Install end cover assembly and rack spacer to rack edge, and
move rack oil seal (outer) until it contacts with gear housing
assembly.

SGIA0205E

SGIA0155E

PGIA0076E

SGIA0157E

STEERING GEAR AND LINKAGE

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< REMOVAL AND INSTALLATION >

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3.

Tighten end cover assembly to specified torque using a 36 mm
(1.42 in) open head (commercial service tool).

CAUTION:

Never damage rack assembly. Replace it if damaged
because it may cause fluid leakage.

4.

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.

5.

Install gear-sub assembly to gear housing assembly.

CAUTION:

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

6.

Apply recommended fluid to O-ring, and then install O-ring to
rear cover.

CAUTION:

Never reuse O-ring.

7.

Install rear cover to gear-sub assembly, using the rear cover
wrench (A) [SST: KV48105400 ( — )]

CAUTION:

Never reuse rear cover.

8.

Install inner socket to rack assembly with the following proce-
dure.

a.

Install spacer to rack assembly.

b.

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

GI-22, "Recommended Chemical Prod-

ucts and Sealants"

.

c.

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

9.

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

10. 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.

SST081B

A

:  2 – 3 mm  (0.08 – 0.12 in)

Rack stroke neutral position (L)

: Refer to 

ST-36, 

"Steering Gear and 
Linkage"

.

JSGIA0928ZZ

JSGIA0927ZZ

SGIA0877E

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< REMOVAL AND INSTALLATION >

STEERING GEAR AND LINKAGE

11. 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. Refer to 

GI-22, "Recommended Chemical Products and

Sealants"

.

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

the parts can fit with each other.

13. Adjust pinion rotating torque with the following procedure.
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 and 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.

Turn pinion fully to left.

e.

Install dial indicator 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).

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

with adjusting screw.

CAUTION:

• Replace steering gear assembly when adjusting screw

is removed or turned more than twice.

• Never turn adjusting screw more than twice.
• 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.

14. Install large end of boot to gear housing assembly.
15. Install small end of boot to inner socket boot mounting groove.

16. Install boot clamp to boot small end.

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

CAUTION:

Never reuse boot clamp.

SGIA0624E

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

B: Preload adapter [SST: KV48103400 ( — )]

SGIA1383E

Pinion rotating torque

: Refer to 

ST-36, "Steering 

Gear and Linkage"

.

JSGIA0937GB

Vertical movement

: Refer to 

ST-36, "Steering Gear 

and Linkage"

.

JSGIA0104ZZ

STEERING GEAR AND LINKAGE

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a.

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

b.

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).

c.

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

d.

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

e.

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.

18. Install cylinder tubes to gear housing assembly.

19. Install low pressure piping.

20. Install outer socket with the following procedure.

• Adjust inner socket to standard length (L), and then tighten

lock nut (1) to the specified torque. Check length again after
tightening lock nut.

Wire length (L)

: 390 mm (15.35 in)

SGIA0163E

SGIA0164E

A

:  80

°

JSGIA0926ZZ

A

:  30

°

JSGIA0042ZZ

Inner socket length (L)

: Refer to 

ST-36, "Steering 

Gear and Linkage"

.

JPGIA0187ZZ