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TM5-4120-377-14
a. Inspection/Testing
(1) Check heater elements for deformation, damaged terminals, threads, cracked, or broken outside
covering. Replace if damaged.
(2) Using a multimeter set on lowest OHMS scale, check for continuity between the two terminal studs.
Replace heater if no continuity is indicated.
b. Heater removal
(1) Check to see that power has been disconnected.
(2) Tag and disconnect the wire leads from the heater that is being removed.
(3) Using a screwdriver, loosen the captive panel fastener screw in the retainer clamp.
4) Pull heater element free of lower mounting clip and remove heater.
c. Heater support and bracket removal
(1) Remove all six heaters.
(2) Using screwdriver, remove two screws, lock washers, and flat washers.
Figure 4-73. Heater Support
(3) Remove heater support.
d. Heater support installation
(1) Using screwdriver, secure support to bracket with two screws, lock washers, and flat washers.
(2) Install heaters. (See e. below.)
e. Heater installation
(1) Insert heater element into lower mounting clip.
(2) Using screwdriver, secure top of heater with retainer clamp by tightening the captive panel fastener
screw.
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