PERIODIC MAINTENANCE
TNV IDI Service Manual
5-9
Periodic Maintenance Procedures
Check and Adjust Cooling Fan V-Belt
The V-belt will slip if it does not have the proper
tension. This will prevent the alternator from
generating sufficient power. Also, the engine will
overheat due to the engine coolant pump pulley
slipping.
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 the
other related bolts and/or nuts, then 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
bolts and/or nuts.
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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