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TM5-4120-387-14
5-19.1. Compressor Replaceable Items
(For Model 3873 Only)
(4) For Model 3770, remove screw and lock washer
casing.
Slide clamp down and away. (See fig. 5-25.)
(5) For Model 3770, remove heater from receptor.
heater clamp screw and remove heater from compressor.
on receiver clamp from
For Model 3783, loosen
(6) Disconnect plug P3 from connector J3 in compressor terminal box,
(7) Using ohmmeter, test resistance from pin F to pin G on J3. Resistance
should be 264 to 396 ohms.
Lower reading indicates short, and infinite reading
indicates open.
Replace faulty or open heater,
(8) Tag and cut wire leads close to heater element.
(9) Using ohmmeter, check for continuity of cut wires from connector J3 pins
F and G.
(10) If continuity exists (wires circuit not open), see tags and splice new
heater per instructions of para. 4-27. Remove tags.
(11) If no continuity exists in step (8) test (wires circuit open), follow the
procedures of step f.
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