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Check and Adjust Fan Belt Tension
--- every 250 hours (first time after 50 hours)
IMPORTANT: Loose fan belt may result in insufficient
battery charging, engine overheating, as well as
premature belt wear. A belt that is too tight can
damage both water pump/alternator bearings as well
as the belt.
Inspect
Check fan belt tension by depressing the midpoint between
the fan pulley and the alternator pulley by your thumb with
a depressing force of approximately 98 N (10 kgf, 22 lbf ).
Deflection must be within the value illustrated in the right.
Visually check the belt for wear. Replace it if necessary.
Adjust Drive Belt Tension
1. Loosen lock nut (1) at the top of alternator (3), and lock
nut (4) at the bottom of alternator (3).
2. Adjust belt tension by moving alternator (3) forward or
backward by using adjustment bolt (2).
3. Securely tighten lock nuts (1) and (4).
IMPORTANT: When a new belt is installed, be sure to re-
adjust the tension after operating the engine for 3 to 5
minutes at slow idle speed to be sure that the new belt
is seated correctly.
MAINTENANCE
Alternator Pulley
7-67
5 to 6 mm
98 N (10 kgf)
1
4
Fan Pulley
Crank Pulley
M1HM-07-001
2
3
M197-07-072
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Troubleshooting
