Drive
Converter
Problem
(Continued)
Maximum
drive converter
RPM
too
high
.
Maximum
drive converter
RPM
too
low
.
Shifting
too quickly.
Shifting
too
slowly
.
Belt
deposits on stationary
sheave and movable sheave.
Drive converter
will
not dis-
engage at
idle
- engine starts
hard and
stalls
because of
belt drag.
Drive
Belt Problem
Side
of
belt glazed or baked -
not
normal, caused by exces-
sive heat buildup.
3-6
TROUBLESHOOTING
Condition
1.
Incorrect
weights
(too light).
2. Short
belt
or
incorrect
center to center distance.
1.
Incorrect
weights
(too
heavy).
2.
Long belt or
incorrect
center to center distance.
1.
Incorrect
weights
(too
heavy).
2. Weak drive spring.
3. Driven spring preload in-
correct (too loose).
1.
Incorrect
weights
(too light).
2. Spring too strong.
3.
Driven spring preload too
tight.
1.
Wrong
offset
and center to
center distance.
1.
Drive belt outside
circum
-
ference
below
specifications.
2.
Thickness
of
belt on inside
diameter
exceeds specifica-
tions.
Condition
1. Incorrect
belt
- excessive
slippage.
2. Too much
throttle
applied
under
heavy load - excessive
slippage.
3. Weak drive converter
spring.
4. Drive converter engage-
ment
rpm too low.
Remedy
1. Install correct
weights
.
2.
Install
new
belt and establish
correct offset and
center
to
center distance.
1.
Install correct
weights.
2.
Install
new
belt and establish
correct offset and
center
to
center distance.
1.
Install correct
weights.
2. Replace spring.
3.
Correct spring preload.
1.
Install correct
weights
.
2.
Replace spring.
3. Decrease spring preload.
1.
Remove belt deposi
ts
and
establ ish correct
offset
and
center
to
center distance.
1.
Replace drive belt.
2.
Check drive belt specifica-
tions
(belt thickness on inside
diameter).
Remedy
1. Install correct
drive
belt.
2.
Tell
driver
to decrease
throttle
under heavy load con-
dit
ion; install
new
belt.
3. Perform spring pressure
test
; install
new
spring
if
spring is weak.
4.
Adjust
engagement
rpm -
See Specifications.
-
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