TM 55-1520-240-23-5
6-145.1
REPAIR AFT TRANSMISSION OIL COOLER OUTSIDE SURFACE (Continued)
6-145.1
NOTE
Reparable damage is limited to
scratches, nicks, gouges, minor
corrosion, and bent fins.
1.
Clean oil and grease from the damaged area.
Use naphtha (E245) and clean cloths (E120).
Wear gloves (E184.1).
2.
Check extent and location of damage on cooler
(1).
NOTE
Dimensions in this step refer to extent
of damage after rework.
a.
Depth of damage shall not be more than
0.060 inch.
b.
Damage shall not extend over more than one
surface or enter any radius.
c.
Damage shall not be closer than 1.00 inch to
any mounting hole (2).
d.
More than 3 inches of fins (3) shall not be
crushed beyond straightening.
e.
If any fin is bent more than 30 , straighten it.
3.
Fluorescent inspect damaged area to check for
cracks (TM 1-1500-335-23). There shall be no
cracks. If crack is suspected in aft transmission
oil cooler outside, refer to TM 1-1520-253-23.
4.
Blend out damage with emery cloth (E123) or
abrasive paper (E13). Observe the limits of step
2.
5.
Smooth the blended area with crocus cloth
(E122). Do not leave any sharp edges.
6-518
Change 1
