Cub Cadet Yanmar 3TNV72 - Manual (Page 81)

PERIODIC MAINTENANCE
5-20 TNV IDI Service Manual
Periodic Maintenance Procedures
Check and adjust the V-belt tension (deflection) as
follows:
1. Press the V-belt down with your thumb with a
force of approximately 22 ft·lb (98 N·m,
10 kgf·m) to check the deflection.
There are three positions to check for V-belt
tension (Figure 5-4, (A), (B) and (C)). You can
check the tension at whichever position is the
most accessible. The proper deflection of a used
V-belt at each position is:
Figure 5-3
Figure 5-4
2. If necessary, adjust the V-belt tension. Loosen
the adjusting bolt (Figure 5-5, (1)) and move
the alternator (Figure 5-5, (2)) with a pry bar
(Figure 5-5, (3)) to tighten the V-belt to the
desired tension. Then tighten the adjusting bolt.
Figure 5-5
(4)
(5)
(1)
0000587C
(4)
(2)
(3)
Used V-Belt Tension
A B C
3/8 - 1/2 in.
(10 - 14 mm)
1/4 - 3/8 in.
(7 - 10 mm)
5/16 - 1/2 in.
(9 - 13 mm)
C
0000652B
A
B
(3)
(1)
(2)
0000653B
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