Shibaura CM314, Operator'S Manual

Page: 53 / 74

3-18
Fan Belt
NOTE: Check the condition of the fan belt
after every 50 hours of operation. Check fan
belt tension after every 200 hours of
operation.
A belt-driven fan located at the front of the
engine draws air through the fins of the radiator
to lower the temperature of the radiator coolant.
When 9-11 kg (88-108 N) of thumb pressure is
applied midway between the belt pulleys, a
correctly tightened belt will deflect 10 mm-15
mm.
If the fan belt is slipping, fan efficiency is
lowered, resulting in the engine running too hot.
If the belt is too tight, the life of the alternator
bearing will be shortened. If the fan belt shows
signs of cracking or fraying, install a new one.
To adjust fan belt tension:
1. Loosen the alternator mounting bolts
A
.
WARNING: NEVER ATTEMPT TO LOOSEN
OR TIGHTEN MOUNTING BOLTS WITH
THE ENGINE RUNNING.
2. Pry the alternator away from the engine and
tighten the mounting bolts.
3. Recheck belt deflection.
LUBRICATION AND MAINTENANCE
19983638
FAN BELT
19983638
A
ALTERNATOR BELT TENSION ADJUSTMENT
1. Alternator Mounting Bolts