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TM 5-4320-305-24
Table 2-1. Organizational Preventive Maintenance Checks and Service
W - Weekly
Q - Quarterly
M - Monthly
S - Semiannually
W
M
Q
S
6
V-Belts, V-
Check V-belt tension.
When V-belt is
Belt Pulleys,
pressed with forefinger at the mid-
Alternator
point between pulleys, it should deflect
Fan, and Air
1/2-3/4 inch (12.7-19.0 mm). If V-belts
Guide Ring-
are damaged, replace as a set.
Continued
Determine whether detected V-belt
damage has been caused by damaged or
worn pulleys. Be sure damaged or worn
pulleys are replaced prior to replacing
V-belts.
Pulley Check.
Check alternator pulley (2), cooling
blower pulley (3), idler pulley (4), and
crankshaft pulley (5) for sharp edges,
nicks, corrosion, or wear sufficient to
form sharp edges on pulley outside
diameters.
Check all pulleys for loose-
ness on shafts.
·
Check nut and lockwasher (6), hex
bolt and nut (7), waisted bolt and
washer (8), and washer and hex nut
(9) for tightness and corrosion.
Alternator Fan, Blower Blades, and Guide
Ring Check.
Check alternator fan (1) for damaged
blades which could interfere with rota-
tion or damage the V-belt.
Check blower blades (2) for damage
which could interfere with rotation or
damage the V-belt.
INTERVAL
ITEM
NO
ITEM TO BE
INSPECTED
Procedure
2-18
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