TM 9-4940-549-14&P
On-Equipment Testing.
a.
(1)
Tag leads and note position of jumpers on polarity switch.
(2)
Disconnect leads and jumpers from the switch.
(3)
Place switch in OFF position.
(4)
terminal and all other terminals. No continuity should be in-
dicated.
(5)
Place the switch in the STRAIGHT position.
(6)
Use a multimeter and test between each center terminal and its
corresponding lower terminal. Continuity should be indicated.
Then test between each center terminal and its corresponding
upper terminal. No continuity should be indicated.
(7)
Place the switch in REVERSE position.
(8)
Repeat tests as in (6) above. Continuity should not be indica-
ted between the center and lower terminals. Continuity should
be indicated between the center and upper terminals.
Replace a defective switch.
(9)
b.
Removal.
Cleaning and Inspection.
c.
(1) Clean the switch with a clean, lint-free cloth.
(2) Inspect for damage and loose terminals and replace a defective
polarity switch.
d.
Installation.
Removal.
a.
b.
Cleaning and Inspection.
(1) Clean the direct current ammeter with a clean, dry, lint-free
cloth .
(2) Inspect for damage and loose terminals. Replace a defective
c.
Installation.