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TM 5-4320-306-24
3-18. REPAIR ALTERNATOR, V-BELT PULLEY, AND FAN (Continued)
8
Inspect alternator V-belt pulley (1) and fan (2)
for nicks, dents, rust, corrosion, or other
damage.
9
File burrs on V-belt pulley (1). Remove rust and
clean.
10
Straighten and aline fan (2) blades. Remove
rust and clean.
TEST:
1
Test diodes using diode tester.
a.
For the positive diode assembly and
negative diode assembly, test points are
diode stems (1) and heat sink (2). Current
should flow in one direction only. Replace
entire assembly if one diode tests faulty.
b.
For the trio diode, test points are the three
wire leads.
2
Test stator (1) using a multimeter set on ohms.
a.
Connect the multimeter test probes to
each of the following pairs of test points.
Point A-to Point B
Point A to Point C
Point B to Point C
Point A to Point D
Point B to Point D
Point C to Point D
b.
The test should indicate an infinite resistance between each of the above test points. If any one test fails,
replace stator.
3-91
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