4-109. LARGE AIR INTAKE REPLACEMENT (M373A2C).
This Task Covers:
Cleaning and Inspection
General mechanic's tool kit
Drill bit set
Z Electric drill
Z Rivet gun
Remove 20 rivets (9) securing hinge (8) to semitrailer. Discard rivets.
Open cover (12) and remove 61 rivets (3) securing frame (1) to semitrailer. Remove frame. Discard rivets.
Remove locknut (2) and screw (4) securing each stay (5) to frame (1). Remove cover (12) and hinge (8) from
frame. Discard locknuts.
Remove 20 rivets (10) securing hinge (8) to cover (1 2). Remove hinge. Discard rivets.
Remove two rivets (7) securing each stay (5) to cover (1 2). Remove stays. Discard rivets.
Remove six thumbscrews (11 ) from cover (1 2).
Remove top and bottom gaskets (6) and two side gaskets (13) from cover (12). Discard gaskets.
Remove eight screws (14) securing each grille (15) to frame (1). Remove grilles.
CLEANING AND INSPECTION
Dry cleaning solvent, P-D-680, is toxic and flammable. Always wear protective goggles
and gloves, and use only in a well-ventilated area. Avoid contact with skin, eyes, and
clothes, and DO NOT breathe vapors. DO NOT use near open flame or excessive heat.
The solvent's flash point is 100F-138F (38C-59C). If you become dizzy while
using cleaning solvent, immediately get fresh air and medical help. If solvent contacts
eyes, Immediately wash your eyes and get medical aid.
Clean all parts with dry cleaning solvent and dry thoroughly. Ensure that bonding surfaces on cover, hinge, and
semitrailer for gaskets, cover, and frame are clean and dry.
Inspect cover and frame for warpage and distortion. Straighten if necessary.
Inspect hinge for straightness and deterioration. Replace if damaged.
Inspect all other parts for defects and damage. Replace defective and damaged parts.