ARMY TM 9-4120-380-14
AIR FORCE TO 35E9-136-21
ELECTRICAL HEATERS (HR1 AND HR2).Continued.
Substitute cast iron hardware on replacement part with stainless steel.
Position heating element (8) through plate (10) and secure with nut (9).
b. Install two flat washers (6), lockwasher (5), nut (4) and wire leads (7)
d. Install plastic cover (11) with two screws (1), flat washers (3), and lockwashers (2).
FOLLOW ON PROCEDURES
b. Connect air conditioner input power at source.
Figure 4-42. Electric Heaters (HR1 and HR2)