(5) If bulkhead (14) is damaged, disconnect the ignition cable, remove the screws which secure the ignition
transformer to the bulkhead, and pull off the ignition transformer. Remove the screw and nut which secure the louver
linkage pivot control bar to the bulkhead. Remove the screws (15) and lock washers (16) which secure the bulkhead to
the heater case, and pull off the bulkhead.
(6) If turnlock fastener receptacles (19) are worn or damaged, drill out rivets (18) which secure the receptacle to
the heater case.
b. Cleaning and Inspection.
Clean parts in a well-ventilated area. Avoid inhalation of solvent fumes and
prolonged exposure of skin to cleaning solvent. Wash exposed skin thoroughly.
Dry cleaning solvent (fed. spec. P-D-680) used to clean parts is potentially
dangerous to personnel and property. Do not use near open flame or excessive
heat. Flash point of solvent is 100 F (38 C).
(1) Using a dry cloth, wipe dust and lint from the case.
Remove greasy or gummy deposits with a cloth
dampened with dry cleaning solvent (fed. spec. P-D-680).
(2) Check the inside of the heater case for accumulations of dust and lint. If vacuum cleaning equipment is
available, use it to clean the inside of the heater case, taking care not to disturb the wiring or damage components. If
vacuum cleaning equipment is not available, use a clean, dry cloth to remove accumulations of dust and lint.
(3) Replace any screws with damaged threads, and touch up any damaged paint to prevent corrosion.
(4) Inspect all surfaces for distortion, cracks, severe dents, or other damage.
Refer to direct support
maintenance for repair.
c. Reassembly. Reassembly is the reverse of disassembly.
SIDE PANELS AND LOUVER LINKAGE.
(1) Remove the right and left side louvered panels (1 and 4, fig. 4-18) by turning the stud turnlock fasteners (2)
counterclockwise. The push-on nuts (3) and stud turnlock fasteners remain on the panels.