Nissan Terrano r20e. Instruction — part 438
i.
Remove main gear by tapping lightly.
SMT288A
DISASSEMBLY
TF-16
Mainshaft
DISASSEMBLY
1. Check end play of front drive sprocket.
Standard:
0.2 - 0.35 mm (0.0079 - 0.0138 in)
If end play is beyond the maximum value, check front drive
sprocket and clutch gear for wear.
2. Remove retaining ring, speedometer drive gear and steel ball.
Be careful not to lose the steel ball.
3. Remove snap ring and spacer.
4. Press out front drive sprocket with mainshaft rear bearing and
clutch gear together.
5. Remove needle bearing.
6. Remove bearing retainer and then remove snap ring and
spacer.
SMT347A
YMT019
SMT290A
SMT291A
SMT292A
REPAIR FOR COMPONENT PARTS
TF-17
7. Press out mainshaft front bearing from mainshaft.
INSPECTION
Gear and shaft
I
Check gears for excessive wear, chips or cracks.
I
Check shaft for cracks, wear of bending.
I
Check coupling sleeve for wear or damage.
Baulk ring
I
Check baulk ring for cracks or deformation.
I
Measure clearance between baulk ring and gear.
Baulk ring to gear clearance:
Unit: mm (in)
Standard
Wear limit
1.0 - 1.5 (0.039 - 0.059)
0.5 (0.020)
Bearing
I
Make sure bearings roll freely and are free from noise, cracks,
pitting or wear.
SMT293A
SMT348A
SMT349A
SMT350A
SMT351A
REPAIR FOR COMPONENT PARTS
Mainshaft (Cont’d)
TF-18
ASSEMBLY
1. Press mainshaft front bearing onto mainshaft.
Pay special attention to its direction.
2. Install spacer.
3. Select snap ring with proper thickness and install it.
Allowable clearance between snap ring and groove:
0 - 0.15 mm (0 - 0.0059 in)
Available snap ring
Thickness
mm (in)
Part number
3.1 (0.122)
3.2 (0.126)
3.3 (0.130)
3.4 (0.134)
33138-33G10
33138-33G11
33138-33G12
33138-33G13
4. Regarding further procedures, refer to “ASSEMBLY” above.
Front Drive Shaft
DISASSEMBLY
I
Front drive shaft front bearing
I
Front drive shaft rear bearing
SMT294A
SMT295A
SMT296A
SMT297A
REPAIR FOR COMPONENT PARTS
Mainshaft (Cont’d)
TF-19
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