TM 9-4520-258-14
Table 4-1. Unit Preventive Maintenance Checks And Services.
Location
Not Fully
Item
No.
Interval
Item to
Check/Service
Procedure
Mission
Capable If:
8
1000 hrs
INTERNAL
___________
Heat Exchanger
Assembly
a.
Primary and
Secondary
Exchangers
b.
Transformer
Inspect for loose or missing hardware.
Inspect for holes, cracks or other signs of burn through, or
corrosion.
Inspect exhaust pipe for security, holes, cracks, or other
signs of exhaust leaks, and corrosion.
Remove sight glass. Clean lens with a clean soft rag.
Apply anti-seize compound (Item 3, App E) to sight glass
ad install on heat exchanger.
Inspect for loose or missing hardware. Tighten loose
hardware, replace missing hardware (para 4-32).
Inspect for loose connections, chafing or exposed wire
(para 4-32).
Holes, cracks, or
signs of burn
through. Missing
hardware.
Leaks exist.
Dirty.
Loose or missing
hardware.
Loose
connections,
chafing, or
exposed wire.
4-20
