Check the fan and alternator belt for
insufficient tension, wear, and damage.
Insufficient belt tension may cause battery
charge failure, engine overheating, or abnormal
belt wear. If too much tension is applied to
the belt, the bearings or belt may be damaged
prematurely.
Apply a force of 98 N {22 lb} to the center of
belt between pulleys, and measure the belt
deflection. The table below shows normal
condition.
Belt
When new belt replaced
mm (in)
When inspected
mm (in)
Force
N (lbf)
Alternator, Fan
8 to 10 mm (0.31 to
0.39")
10 to 12 mm (0.39 to
0.47")
98 (22)
Air-conditioner
6 to 7 mm (0.24 to 0.28")
7 to 8 mm (0.28 to 0.31")
28 (6.3)
３
G. Checking Belt Tension
Rotating parts can cause injury.
Keep away from fan and belt when engine is running.
Stop engine before servicing.
-When replace with new belt, there is a lack of initial adaptability of the belt. Run the engine at idling
speed for about three or five minutes. After that, adjust the belt tension again.
-New belts get complete initial elongation after being run about two hours.
-When you replace V-belts which are two in on set, make sure to replace both of them.
See the section "4.14 250 HOUR (3-MONTH) INSPECTION & MAINTENANCE PROCEDURE"
for
details on the inspection and adjustment procedure for the belt.
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3. MACHINE OPERATION
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3-9
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