4-36. AIR SHIELDS MAINTENANCE
This task includes:
Engine set on level ground in protected area.
Tool Kit, General Mechanic's
Fuel tank and attaching hardware removed.
Solvent, Dry Cleaning; item 9, Appx E
Air cleaner removed.
General Safety Instructions
Rivet, Plastic (4)
Observe all WARNINGS and CAUTIONS
Clean all parts in dry cleaning solvent and dry
The air shields provide for directing the air
flow from the flywheel fan to cool the cylin-
Inspect shields (2, 5 and 7) for cracks, bent condi-
der and the cylinder head. Remove the air
tion or other damage that would not allow good
shields only for access to replace the cylin-
der and to replace damaged or badly
clogged air shield.
Inspect threaded fasteners for stripped threads or
Remove four spacers (1) and housing shield (2).
Replace any part found to be defective in any
Remove filister head screw (3), lockwasher (4)
and air shield (5).
Remove plastic rivets (6) and air intake screens
(7). Discard the plastic rivets.
If removed, install the two air intake shields (7),
securing each shield with two plastic rivets (6).
If removed, install the air shield (5) to the top of
crankcase, and secure with filister head screw (3)
and lockwasher (4). Tighten screw securely.
Install the housing shield (2) and four spacers (1).
P-D-680, Type III, Is moderately toxic to
the skin, eyes and respiratory tract;
avoid prolonged exposure. Skin and
eye protection is required. Good ventila-
Follow-n tasks include: Install the air
tion Is required. Do not use near open
flame or excessive heat. Flash point Is
fuel tank (Para. 4-56), Install the muffler
200° F (93.3° C).