TESTING (Cont) - TM-55-1905-221-14-30217

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TESTING

TM-55-1905-221-14-3 Landing Craft Mechanized Steel DED Overall Length 74 Feet Mod 1 Mark VIII Navy Design LCM-8 Manual

OVERHAUL

TM 55-1905-221-14-3

6-18.

ALTERNATOR (Continued).

LOCATION/ITEM

ACTION

REMARKS

TESTING (Cont)

b. Check negative rectifier diodes

with an ohmmeter. Connect negative

(-) ohmmeter probe to diode heat-

sink (1), and positive (+) probe

to each diode (2) terminal.

Resistance should be low or zero.

If resistance is high, diode is

defective.

Check negative rectifier diodes as

specified in "b" above but with

ohmmeter leads reversed. Resis-

tance should be high or infinite.

If resistance is low, diode is

defective.

d. Check positive rectifier diodes

with an ohmmeter. Connect positive

(+) probe to diode heat-sink (3)

and negative (-) probe to each

diode (4) terminal. Resistance

should be low or zero. If resis-

tance is high, diode is defective.

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