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INSPECTION OF COMBUSTION CHAMBER (AVIM) | Up
TM-55-2835-209-23 Gas Turbine Engine (Auxiliary Power Unit APU) Model T 62T 40 I Part Numbers 116305-100 and 116305-200 Manual | Next
REPAIR - COMBUSTION CHAMBER (AVIM) |
TM 55-2835-209-23
3-3 INSPECTION OF COMBUSTION CHAMBER (AVIM) (CONT)
1.
2.
3.
4.
NOTE
Visually inspect combustion
chamber as follows:
Inspect for deformation (1), metal
thinning, hot spots or burn through
(3) on combustion chamber. No dam-
age allowed.
Inspect shell for cracks (2) at ig-
niter plug grommet, retainer welds
or retainer (4).
No cracks allowed.
If cracks are suspected, fluorescent
penetrant inspect per MIL-STD-6866.
NOTE
Dimensionally inspect com-
bustion chamber as follows:
Deformation (1).
a.
Measure using dial indicator,
surface plate and gage block
set.
b.
Deformation (1) not to exceed
0.125 inches.
Cracks (2).
a.
Measure using vernier caliper.
b.
Not longer than 0.250 inch. Not
less than 0.250 inch apart.
5.
Hot spots, metal thinning or burn
through (3).
a.
Measure using dial indicator,
surface plate and gage block as-
sembly.
b.
Damage depth greater than 0.016
inch not allowed.
6.
Repair combustion chamber (Task
3-4).
FOLLOW-ON MAINTENANCE: None.
3-10
Change 1
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