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TM 9-4110-257-14
4-25. TIME DELAY RELAYS TD1 AND TD2 TESTING AND REPLACEMENT. - Continued
NOTE
The following procedures apply to both TD1 and TD2. Quantities given are for each
relay.
Terminal hardware is supplied with time delay relay.
(2) Tag wire leads and remove nuts (4), screws (5) and wire leads (6) from time delay relay (7) and (8).
(3) Using multimeter set to measure continuity, check continuity between heater terminals. Continuity should be
indicated. If no continuity was indicated, replace time delay relay (7) or (8).
(4) Using multimeter set to measure continuity, check continuity between contact terminals. Continuity should
not be indicated. If continuity was indicated, replace time delay relay (7) or (8).
(5) If no failure was indicated, use tags and wiring diagram (fig. 1-4), install wire leads (6), screws (5), and nuts
(4). Remove tags.
(6) Close control panel (3) and install two new lock washers (2) and bolts (1).
b.
Removal.
(1) Be sure battery has been disconnected and remove two bolts (1) and lock washers (2). Open control panel
(3). Discard lock washers.
NOTE
The following procedures apply to both TD1 and TD2. Quantities given are for each relay.
Terminal hardware is supplied with time delay relay.
(2) Tag wire leads (6) and remove nuts (4), screws (5) and wire leads (6) from time delay relay (7) or (8).
(3) Remove two bolts (9), lock washers (10), flat washers (11), and time delay relay (7) or (8). Discard lock
washers.
4-64
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