Nissan Primera P11. Instruction — part 522
Mainshaft and Gears
DISASSEMBLY
NCMT0013
1.
Before disassembly, measure gear end play.
Gear end play:
Refer to SDS, MT-90.
I
If end play is not within the specificed limit, disassemble and
check the parts.
2.
Remove snap ring.
3.
Remove C-ring holder and mainshaft C-ring.
4.
Press out mainshaft rear bearing from mainshaft.
5.
Remove mainshaft thrust washer.
6.
Remove snap ring from mainshaft. Then, remove reverse main
gear assembly, reverse gear needle bearing, and reverse gear
baulk ring.
SMT760D
Mainshaft assembly
Feeler
gauge
SMT677D
Snap ring
SMT678D
C-ring holder
Mainshaft C-ring
SMT679D
Mainshaft rear
bearing
SMT680D
Mainshaft
thrust washer
Reverse main
gear assembly
REPAIR FOR COMPONENT PARTS
RS5F70A
Mainshaft and Gears
MT-63
7.
Place bearing replacer between 5th & reverse synchronizer
hub and 5th main gear, and press out both reverse gear bush-
ing and 5th & reverse synchronizer assembly.
8.
Remove 5th main gear, 5th gear baulk ring, and 5th gear
needle bearing.
9.
Place bearing replacer between 3rd and 4th main gears, and
press out both 5th gear bushing and 4th main gear.
10. Remove mainshaft adjusting shim and spacer.
11. Place bearing replacer between 2nd main gear and 1st & 2nd
synchronizer hub, and press out both 3rd and 2nd main gears.
12. Remove 2nd double cone assembly, 2nd gear bushing, and
coupling sleeve assembly.
13. Place bearing replacer on 1st gear front side, and press out all
of 2nd gear bushing, 1st & 2nd synchronizer hub, 1st main
gear, and 1st double cone.
14. Remove 1st gear needle bearing.
INSPECTION
NCMT0014
Gear and Shaft
NCMT0014S01
I
Check shaft for cracks, wear or bending.
I
Check gears for excessive wear, chips or cracks.
SMT681D
Reverse gear bush
5th & reverse
synchronizer
hub assembly
SMT682D
5th gear bush
4th main gear
SMT683D
3rd main gear
Bearing replacer
2nd main
gear
SMT684D
2nd gear bush
1st & 2nd
synchronizer hub
1st main gear
SMT693D
REPAIR FOR COMPONENT PARTS
RS5F70A
Mainshaft and Gears (Cont’d)
MT-64
Synchronizers
NCMT0014S02
I
Check spline area of coupling sleeves, hubs and gears for
wear or cracks.
I
Check baulk rings for cracks or deformation.
I
Check insert springs for wear or deformation.
I
If any crack, damage, or excessive wear is found on cam face
of baulk ring or working face of insert, replace it.
I
Measure the movement (play, dimension “L”) of 1st & 2nd
coupling sleeve and 5th & reverse coupling sleeve with their
end fixed and the other end lifted as shown in the figure. If the
movement exceeds specification, replace the sleeve.
Coupling sleeve
Length “L”
1st & 2nd
0 - 0.68 mm (0 - 0.0268 in)
5th & Reverse
0 - 0.89 mm (0 - 0.0350 in)
I
Measure clearance between baulk ring and gear.
Clearance between baulk ring and gear:
Refer to SDS, MT-90.
Bearing
NCMT0014S03
I
Make sure bearings roll freely and are free from noise, cracks,
pitting or wear.
SMT637A
SMT867D
SMT868D
Fixed
Dimension “L”
Fixed
Dimension “L”
1st & 2nd coupling sleeve
5th & reverse coupling sleeve
SMT140
Baulk ring to
gear clearance
SMT148A
REPAIR FOR COMPONENT PARTS
RS5F70A
Mainshaft and Gears (Cont’d)
MT-65
I
Measure wear of 1st and 2nd baulk ring.
a)
Place baulk rings in position on synchronizer cone.
b)
While holding baulk ring against synchronizer cone as far as it
will go, measure dimensions “A” and “B”.
Standard:
A 0.6 - 0.8 mm (0.024 - 0.031 in)
B 0.6 - 1.1 mm (0.024 - 0.043 in)
Wear limit:
0.2 mm (0.008 in)
I
If dimension “A” or “B” is smaller than the wear limit,
replace outer baulk ring, inner baulk ring and synchro-
nizer cone as a set.
ASSEMBLY
NCMT0015
1.
Install 1st gear needle bearing and 1st main gear onto main-
shaft.
2.
Install 1st double cone assembly onto mainshaft.
3.
Install 1st & 2nd synchronizer hub with its three grooves fac-
ing the front side (1st main gear side) onto mainshaft.
CAUTION:
Do not reuse 1st & 2nd synchronizer hub.
SMT714CB
Inner baulk ring
Synchronizer
cone
Outer baulk ring
Synchronizer cone
SMT706D
1st gear needle bearing
1st main gear
Mainshaft
SMT695D
Front
REPAIR FOR COMPONENT PARTS
RS5F70A
Mainshaft and Gears (Cont’d)
MT-66
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