Yanmar 3TNV82A-B Service Manual page 113

Periodic Maintenance Procedures
Used V-Belt Tension
A
3/8 - 1/2 in. 1/4 - 3/8 in.
(10 - 14 mm) (7 - 10 mm)
Note: A "Used V-Belt" refers to a V-belt which
has been used on a running engine for
five minutes or more.
(C)
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.
(3)
(1)
(2)
Figure 5-5
3. Tighten the V-belt to the proper tension. There
must be clearance (Figure 5-6, (1)) between
the V-belt and the bottom of the pulley groove. If
there is no clearance (Figure 5-6, (2)) between
the V-belt and the bottom of the pulley groove,
replace the V-belt.
TNV DI Service Manual
B C
5/16 - 1/2 in.
(9 - 13 mm)
(B)
(A)
0000063B
0000064B
PERIODIC MAINTENANCE
(1)
Figure 5-6
(2)
0000584
5-23