Isuzu Tilt Slide FYJ2000 Instruction Manual page 362

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SERVICE AND MAINTENANCE
CAUTION
• The V-ribbed fan belt used in your engine requires the tension be adjusted more
accurately than is required with conventional V-belts. Inappropriate tension
could cause the belt to make noise or break. When the fan belt is damaged,
electricity is not properly generated and becomes a cause of overheating. You
must check the tension of the fan belt carefully.
• To accurately check fan belt tension, use a sonic wave tension gauge, which will
show you whether the belt's vibration frequency (representing the belt tension)
is as listed below. Ask about the sonic wave tension gauge at your Isuzu Dealer.
• Use an Isuzu genuine product when changing the fan belt.
[Caution when adjusting the fan belt]
• Start up the engine and allow it to idle for about 5 minute to keep the belt
tension even between the pulleys.
• Stop the engine and check the tension. If the belt tension is inappropriate,
readjust the tension to the specified value.
• Only when the belt is replaced with a new belt, adjust the belt tension to the
value specified for the new belt.
Fan Belt