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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)
SCH4280
INSPECTION
1. Inspect:
•
Sliding sheave 1
•
Fixed sheave 2
•
Spring seat 3
Cracks/damage → Replace.
•
Stopper 4
Wear/damage → Replace.
SCH4290
2. Inspect:
•
Bushing (spring seat) 1
•
Sliding sheave (V-belt contact surface) 2
Scratches/wear/damage → Replace.
•
Sliding bushing 3
Unsymmetrical wear/damage → Replace.
SCH4300
3. Inspect:
•
Secondary sheave spring 1
Cracks/damage → Replace.
4. Measure:
•
Secondary sheave spring free length
Below specification → Replace the secondary
sheave spring.
Free length limit a:
SCH4310
4-13
POWR
TR
69.5 mm (2.736 in)
a
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