Yamaha SXV70SJ Supplementary Service Manual - Powr
4-13
POWR
TR
SECONDARY SHEAVE
DISASSEMBLY
WARNING
•
Use extreme CAUTION when disassembling
the secondary sheave since serious injury can
occur due to the sudden release of spring ten-
sion. Use the sheave compressor to contain the
spring tension before removing the nuts (spring
seat).
•
Do not attempt this procedure unless you have
the proper tools and understand the instruc-
tions thoroughly.
1. Remove:
•
Nuts (spring seat)
INSPECTION
1. Inspect:
•
Sliding sheave
1
•
Fixed sheave
2
•
Spring seat
3
Cracks/damage
→
Replace.
•
Stopper
4
Wear/damage
→
Replace.
2. Inspect:
•
Bushing (spring seat)
1
•
Sliding sheave (V-belt contact surface)
2
Scratches/wear/damage
→
Replace.
•
Sliding bushing
3
Unsymmetrical wear/damage
→
Replace.
3. Inspect:
•
Secondary sheave spring
1
Cracks/damage
→
Replace.
4. Measure:
•
Secondary sheave spring free length
a
Below specification
→
Replace the secondary
sheave spring.
Free length limit
a
:
69.5 mm (2.736 in)
SCH4280
SCH4290
SCH4300
SCH4310