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Maintenance—Initial Service—50 Hours
KR46761,0001329 -19-26SEP16-1/1
Check and Adjust Fan Belt Tension
Perform this service at the rst 50 hours of operation and
then at 250-hour intervals thereafter.
Visually inspect the fan belt (1) for wear and correct
tension. Replace if necessary.
NOTE: After installing a new belt and operating the
engine for 3—5 minutes at slow idle speed,
the tension needs be adjusted to be sure that
the new belt is seated correctly.
1. Check fan belt tension by depressing the midpoint
between the fan pulley (3) and alternator pulley (2)
with thumb. Deection (5) must be within specication.
Specication
Fan Belt—Deection (5).............................................................5—6 mm
0.20—0.24 in
Fan Belt—Depressing
Force.................................................................................................98 N
10 kgf
22 lbf
2. If tension is not within specication, loosen cap screws
(6) on top and bottom of alternator (7).
3. Move alternator forward or backwards by turning
adjustment cap screw (8). Adjust until tension meets
specication.
4. Tighten cap screws on top and bottom of alternator.
1— Fan Belt
2— Alternator Pulley
3— Fan Pulley
4— Crank Pulley
5— Deection
6— Cap Screw (2 used)
7— Alternator
8— Adjustment Cap Screw
1
3
2
5
4
TX1224501 —UN—27SEP16
Fan Belt
6
6
8
7
TX1224503 —UN—27SEP16
Fan Belt Adjustment
3-5-1
112321
PN=225
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