TM 55-2840-231-23
3-8.
Compressor Discharge Air Tube - Inspection
INITIAL SETUP
Applicable Configuration
References
All
Para 3-9
ENGINE/
1. Air Tubes
Visually inspect for cracks or dents in the
sheet metal surfaces and wear in the seal
ring grooves. Replace the air tube if repair-
able limits are exceeded.
(Refer to paragraph 3-9.)
Check for cracks in
sheet metal surface.
Weld-repair cracks which
are three inches (7.6 cm)
or less in length and
do not extend into brazed
joints at the end flanges.
Replace the air tube if
cracks are longer than
three inches (7,6 cm)
or extend into the
brazed joint.
NOTE
Dents should be round with no
evidence of a sharp bottom. As
a rule of thumb, a dent 1/8 in.
(3.2 mm) deep should be a min-
imum of 1/2 inch (12.7 mm) in
diameter.
Check for dents in sheet
metal surfaces. Replace
air tube if:
a. Any dent is greater
than 1/8 inch (3.2 mm).
b. There are more than
two dents up to 1/8
inch (3.2 mm) deep in
or affecting the weld
joint (P/N 6850398 and
6870748 tubes only).
3-23
