Nissan Xterra. Manual - part 635

 

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Nissan Xterra. Manual - part 635

 

 

GEAR COMPONENTS

TM-53

< UNIT DISASSEMBLY AND ASSEMBLY >

[6MT: FS6R31A]

C

E

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A

B

TM

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a. Press out 3rd main gear and 1st main gear using suitable tool.

CAUTION:

Be careful not to damage 1st outer baulk ring.

b. Remove 1st needle bearing from mainshaft.

20. Remove 1st-2nd synchronizer hub assembly and 2nd main gear according to the following.
a. Press out 1st gear bushing, 1st-2nd synchronizer hub assembly

and 2nd main gear using suitable tool.

CAUTION:

Be aware that when using the press, if mainshaft gear posi-

tioner catches on the V-block, etc., mainshaft could be dam-

aged.

b. Remove 2nd needle bearing from mainshaft.
21. Remove 1st-2nd coupling sleeve according to the following.
a. Remove spread springs and shifting inserts from 1st-2nd syn-

chronizer hub.

b. Remove 1st-2nd coupling sleeve from 1st-2nd synchronizer

hub.

22. Remove 6th main gear and 5th-6th synchronizer hub assembly according to the following.
a. Remove snap ring from mainshaft using suitable tool.

b. Press out 6th main gear and 5th-6th synchronizer hub assembly

using suitable tool.

c. Remove 6th needle bearing from mainshaft.
23. Remove 5th-6th coupling sleeve according to the following.
a. Remove spread springs and shifting inserts from 5th-6th syn-

chronizer hub.

b. Remove 5th-6th coupling sleeve from 5th-6th synchronizer hub.

24. Remove 3rd counter gear, 3rd-4th synchronizer hub assembly, 4th counter gear according to the follow-

ing.

SCIA1458E

SCIA1459E

PCIB1244E

SCIA1460E

TM-54

< UNIT DISASSEMBLY AND ASSEMBLY >

[6MT: FS6R31A]

GEAR COMPONENTS

a. Press out 3rd counter gear, 3rd-4th synchronizer hub assembly,

4th counter gear, 4th needle bearing, 4th gear bushing, 4th

counter gear thrust washer, and counter rear bearing inner race

using suitable tool.

b. Remove 3rd needle bearing from counter gear.
25. Remove 3rd-4th coupling sleeve according to the following.
a. Remove spread springs and shifting inserts from 3rd-4th syn-

chronizer hub.

b. Remove 3rd-4th coupling sleeve from 3rd-4th synchronizer hub.

26. Press out 3rd gear bushing using suitable tool.

CAUTION:

Do not use oil hole of 3rd gear bushing when press out.

Inspection

INFOID:0000000009485382

GEAR AND SHAFT

If the contact surface on each gear, mainshaft, main drive gear, and

counter gear, etc., has damage, peeling, abrasion, dent, bent, or any

other damage, replace the components.

SYNCHRONIZERS

SCIA1389E

PCIB1327E

SCIA1680E

PCIB1246E

GEAR COMPONENTS

TM-55

< UNIT DISASSEMBLY AND ASSEMBLY >

[6MT: FS6R31A]

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• If the contact surface on coupling sleeve, synchronizer hub, and

shifting insert has damage or abrasion, replace the components.

• Coupling sleeve and synchronizer hub shall move smoothly.

• If the cam surface on baulk ring or contact surface on insert has

damage or excessive wear, replace with a new one.

• If spread spring damaged, replace with a new one.

• Reverse Synchronizer 

Push baulk ring on the cone, and measure the clearance between

baulk ring and cone. If the measurement is below limit, replace it

with a new one.

BAULK RING CLEARENCE

• Single Cone Synchronizer (5th and 6th)

Push baulk ring on the cone, and measure the clearance between

baulk ring and cone. If the measurement is below limit, replace it

with a new one.

• Double Cone Synchronizer (1st, 3rd and 4th) 

SMT387A

SCIA0608J

Clearance
Standard 
value

Refer to 

TM-72, "Baulk Ring Clear-

ance"

Limit value Refer to 

TM-72, "Baulk Ring Clear-

ance"

PCIB1328E

Clearance
Standard value

Refer to 

TM-72, "Baulk Ring Clear-

ance"

Limit value

Refer to 

TM-72, "Baulk Ring Clear-

ance"

PCIB1328E

TM-56

< UNIT DISASSEMBLY AND ASSEMBLY >

[6MT: FS6R31A]

GEAR COMPONENTS

Check the clearance between outer baulk ring, synchronizer cone,

and inner baulk ring as follows.

CAUTION:

The clearances (A) and (B) are controlled with outer baulk

ring, synchronizer cone, and inner baulk ring as a set.

Replace them as a set if the clearances are outside the limit

value.

1. Measure the clearance (A) at 2 points or more diagonally oppo-

site using a dial indicator and Tool. Then calculate the mean

value.

2. Measure the clearance (B) at 2 points or more diagonally oppo-

site using a feeler gauge. Then calculate the mean value.

• Triple Cone Synchronizer (2nd)

Check the clearance between outer baulk ring, synchronizer cone,

and inner baulk ring as follows.

CAUTION:

The clearances (A), (B) and (C) are controlled with outer baulk

ring, synchronizer cone, and inner baulk ring as a set.

Replace them as a set if the clearances are outside the limit

value.

SCIA1679E

Tool number

: ST30031000 (J-22912-01)

Clearance (A)
Standard value

Refer to 

TM-72, "Baulk Ring Clear-

ance"

Limit value

Refer to 

TM-72, "Baulk Ring Clear-

ance"

PCIB0945E

Clearance (B)
Standard value

1st

Refer to 

TM-72, "Baulk Ring Clear-

ance"

3rd,4th

Refer to 

TM-72, "Baulk Ring Clear-

ance"

Limit value

Refer to 

TM-72, "Baulk Ring Clear-

ance"

SCIA1084E

PCIB0603E

 

 

 

 

 

 

 

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