MAINTENANCE MANUAL OF ENGINE
111
4. Inspecting the fan and belt
1. Inspect the water pump belt
Inspect whether the water pump belt is cracked, cut,
deformed and worn and torn. Whenever necessary,
it is required to replace the belt and inspect its ten-
sion. As shown in right Figure 7-5, when pressing
the middle part of the belt by exerting a force of
approx. 98N, a 7mm～9mm sag is obtained for a
new belt, and 11mm～13mm for an old belt. Oth-
erwise, it should be adjusted accordingly.
Belt tension--------98N
2. Inspect the fan
① During assembling the fan, pay attention to its
rotation direction, and that the side with marking is
forward.
② Visually inspect whether the fan blades are
damaged.
③ Inspect whether the set bolts for the fan are
tightened firmly.
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