TM 5-4520-256-14
3-21. RECTIFIER MAINTENANCE-Continued.
b.
Inspection.
(1)
Inspect wiring for cracked or burned insulation and exposed conductor.
(2)
Inspect rectifier for damaged terminals.
(3)
Inspect for cracked case and bubbled potting compound.
c.
Cleaning.
WARNING
Cleaning solvent, Federal specification P-D-680, is toxic and flammable. Use only in a well-
ventilated area. Avoid prolonged breathing of fumes. Keep solvent away from flames. Do not
use in excessive amounts. Avoid skin contact.
(1)
Clean rectifier with cleaning solvent (item 11, Appendix E).
(2)
Allow to dry.
d.
Testing.
(1)
Choose any two adjacent terminals and connect multimeter to them.
(2)
Meter will indicate either a short or an open. Reverse meter leads and meter should indicate opposite.
Example: if meter indicated short, reversing leads will indicate an open.
(3)
Keep meter connected to one of the terminals and move other lead to next terminal.
(4)
Repeat steps (2) and (3) until all terminals have been checked.
e.
Installation.
(1)
Install rectifier (4) into position and secure with screw (2), lockwasher (3), and nut (5).
(2)
Connect four leads to rear of rectifier (4) per tagged identification.
(3)
Install access door per para. 3-10d.
Change 3 3-62
