Scheduled Maintenance 3-15TP-5648 8/93
Drive Belt
The alternator, fan, and water pump are belt driven. The
drive belt must be properly adjusted at all times since a
loose drive belt can overheat and results in improper
operation of belt-driven components. Overtightening
thebeltmaycauseexcessivewearonthealternatorand
water pump bearings, as well as premature belt wear.
See Belt Tension following.
Belt Tension
The belt tension should be adjusted so that it can be
depressed about 0.28 to 0.35 in. (7 to 9 mm) with about
22 lbs. (10 kg) of force, see Figure 3-15.
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2
3
1. Adjusting Screw
2. Pivot Screw
3. Fan Belt
Figure 3-15. Belt Tension
1. Loosen pivot and adjusting screws.
2. While prying alternator outward, tighten adjusting
screw.
3. Tighten pivot screw.
4. Recheck and adjust as necessary.
NOTE
Also, check fan belt for cracks or tears and replace if
necessary.
WARNING
Rotating parts.
Can cause severe injury or death.
Do not operate generator set without all guards,
screens, or covers in place.
Exposed moving parts can cause severe injury or
death. Keep hands, feet, hair, and clothing away from
belts and pulleys when unit is running. Replace guards,
covers, and screens before operating generator set.
Battery Charging
This generator is equipped with a 20-ampere,
belt-drivenbatterychargingalternator.SeeFigure 3-16.
Itisattachedtotheengineblockbyabracketandserves
to keep the battery constantly charged. Be sure to
observe battery polarity when connecting the battery to
the generator set. The alternator requires no
maintenance other than maintaining belt tension. To
adjust the alternator belt tension, see “Belt Tension.”
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1
1. Battery Charging Alternator
Figure 3-16. Battery Charging Alternator
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