Nissan March K13. Manual - part 656

INPUT SHAFT AND GEAR

TM-41

< UNIT DISASSEMBLY AND ASSEMBLY >

[5MT: RS5F91R]

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Check the following items and replace if necessary.
• Damage, peeling, bend, uneven wear, and distortion of shaft
• Excessive wear, damage, and peeling of gear

Synchronizer

Check for the following and replace if necessary.
• Contact surface breakage, damage, and unusual wear of coupling

sleeve and synchronizer hub.

• Coupling sleeve and synchronizer hub move smoothly.

• Breakage, damage, and excessive wear of baulk ring cam surface.

Bearing

Check bearing for damage and unsmooth rotation. Replace if neces-
sary.

PCIB0987J

SCIA1753J

SCIA0608J

MTF0041D

TM-42

< UNIT DISASSEMBLY AND ASSEMBLY >

[5MT: RS5F91R]

MAINSHAFT AND GEAR

MAINSHAFT AND GEAR

Exploded View

INFOID:0000000006056587

Disassembly

INFOID:0000000006056588

CAUTION:

• Fix mainshaft in a vise with backplate, and then remove gears and snap rings.
• For removal of snap ring, set snap ring pliers and flat pliers at

both sides of snap ring. While expanding snap ring with snap
ring pliers, move snap ring with flat pliers.

• Disassemble gear components putting direction marks on the

parts that never affect any functions.

1.

Mainshaft front bearing

2.

Mainshaft

3.

1st main gear

4.

1st baulk ring

5.

1st-2nd synchronizer hub

6.

1st-2nd coupling sleeve

7.

Spring

8.

Insert key

9.

2nd baulk ring

10.

Snap ring

11. Thrust washer 

12. 2nd main gear

13.

3rd main gear

14. 3rd baulk ring

15. 3rd-4th synchronizer hub

16.

3rd-4th coupling sleeve

17. 4th baulk ring

18. 4th main gear

19.

Spacer

20. Mainshaft rear bearing

21. 5th main gear

: Apply gear oil.

: Replace the parts as a set.

Refer to 

GI-4, "Components"

 for symbols not described on the above.

JPDIC0792GB

SCIA1755J

MAINSHAFT AND GEAR

TM-43

< UNIT DISASSEMBLY AND ASSEMBLY >

[5MT: RS5F91R]

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1.

Remove 3rd-4th synchronizer hub and 3rd baulk ring.

2.

Remove snap ring (1) and thrust washer (2).

3.

Remove 3rd main gear (1) and thrust washer (2).

4.

Remove snap ring (1) and thrust washer (2).

5.

Remove 2nd main gear (1) and thrust washer (2).

PCIB1559E

PCIB1560E

PCIB1561E

PCIB1562E

TM-44

< UNIT DISASSEMBLY AND ASSEMBLY >

[5MT: RS5F91R]

MAINSHAFT AND GEAR

6.

Remove snap ring (1), and then remove 2nd baulk ring.

7.

Remove 1st-2nd coupling sleeve, insert keys, springs, and 1st-
2nd synchronizer hub.

8.

Remove 1st baulk ring and 1st main gear (2).

Assembly

INFOID:0000000006056589

Note the following items, and assemble in the reverse order of disassembly.

CAUTION:

• Never reuse snap ring.
• For installation of snap ring, set snap ring pliers and flat pliers

at both sides of snap ring. While expanding snap ring with
snap ring pliers, move snap ring with flat pliers.

• Check that snap ring is securely installed to the groove.
• Apply gear oil to 1st baulk ring, 2nd baulk ring, and 3rd baulk

ring.

• Be careful with the orientation of 1st-2nd synchronizer hub.

• Replace 1st-2nd synchronizer hub and 1st-2nd coupling

sleeve as a set.

• Be careful with the orientation of 1st-2nd coupling sleeve.

JPDIC0541ZZ

SCIA1755J

A

: 1st main gear side

B

: 2nd main gear side

PCIB1566E

A

: 2nd main gear side

B

: 1st main gear side

PCIB1567E