Yamaha YP125R, Service Manual

Page: 340 / 498

V-BELT AUTOMATIC TRANSMISSION (YP250R)
5-95
EAS24680
CHECKING THE PRIMARY SHEAVE
1. Check:
• Primary sliding sheave
• Primary fixed sheave
• Spacer
Cracks/damage/wear
→
Replace the primary
sliding sheave and primary fixed sheave as a
set.
EAS24690
CHECKING THE PRIMARY SHEAVE
WEIGHTS
The following procedure applies to all of the pri-
mary sheave weights.
1. Check:
• Primary sheave weight
Cracks/damage/wear
→
Replace.
2. Measure:
• Primary sheave weight outside diameter
Out of specification
→
Replace.
EAS24700
CHECKING THE PRIMARY SHEAVE
SLIDERS
1. Check:
• Primary sheave slider
Cracks/damage/wear
→
Replace.
EAS24710
CHECKING THE SECONDARY SHEAVE
1. Check:
• Secondary fixed sheave
• Secondary sliding sheave
Cracks/damage/wear
→
Replace the sec-
ondary fixed and sliding sheaves as a set.
2. Check:
• Torque cam groove “1”
Damage/wear
→
Replace the secondary
fixed and sliding sheaves as a set.
3. Check:
• Guide pin “2”
Damage/wear
→
Replace the secondary
fixed and sliding sheaves as a set.
4. Check:
• Spring free length
Out of specification
→
Replace the spring.
EAS24720
ASSEMBLING THE PRIMARY SHEAVE
1. Clean:
• Primary fixed sheave
V-belt width
23.0 mm (0.91 in)
Limit
21.0 mm (0.83 in)
Weight outside diameter
20.0 mm (0.79 in)
Limit
19.5 mm (0.77 in)
Compression spring free length
102.4 mm (4.03 in)
Limit
90.0 mm (3.54 in)