TM 1-1520-238-23
2-110
Change 7
2.38.
GUN AND AMMO SUPPORT FORWARD MOUNT PADS SLEEVE BUSHING REPLACEMENT
(AVIM) – continued
2.38.4. Cleaning
a. Clean support bushing bore. Use methyl ethyl ketone (item 124, App F), naphtha (item 127, App F), or
thinner (item 211, App F) and cloth (item 52, App F) (para 1.47).
2.38.5. Inspection
a. Check support bushing bore for cracks.
(1) If cracks are suspected, perform nondestructive inspection (TM 1-1520-264-23).
b. Check support bushing bore for scoring, nicks, and scratches.
(1) Scoring, nicks, and scratches are acceptable if less than 0.025 INCH deep.
c. Measure support bushing bore diameter (use caliper).
(1) Minimum diameter, 0.377 inch, maximum diameter 0.379 inch.
d. Check support surface for corrosion (para 1.49).
2.38.6. Installation
a. Measure diameter of support bore surface and select appropriate bushing.
WARNING
Do not place heater near flammable material or allow heater to contact skin: severe burns can
result. Wear protective equipment. If injury occurs, seek medical aid.
CAUTION
Do not heat bushing bore area over 200 F (98 C) or damage may result.
Do not allow primer or paint to enter bushing bore or bushing damage may result.
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