TM 5-4520-253-13
CLEAN/lNSPECT/REPAIR HEAT EXCHANGER (CONT)
3. Check heat exchanger insulators behind burner head adapter ring. If insulators are frayed, torn,
or otherwise damaged, replace.
4. Check exchanger shield at exhaust end of heat exchanger. If frayed, torn, or otherwise damaged,
replace.
REPAIR:
1.
2.
3.
4.
Repair to heat exchanger is limited to replacing heat exchanger insulators and exchanger ex-
haust shield.
To replace heat exchanger insulators, pull out damaged insulators and insert new ones. Insulators
are flexible and split to facilitate installation.
To replace exchanger exhaust shield, lift out of recess at exhaust end of heat exchanger and
install new one.
Do not attempt to repair any other damage to heat exchanger.
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