Cessna 150K - Engine Component Maintenance

NOTE
When new shock mounts or brackets are being
installed, careful measurements should be
made
to position these parts correctly on the
firewall. The service parts are not pre-drilled.
Install shock mounts on brackets so that cowling
and
shock mount is correctly aligned. Sheet
aluminum may be used as shims between bracket
halves to provide cowling contour.
11-4. CLEANING AND INSPECTION. Wipe the
inner surfaces of the cowling segments with a cloth
saturated with cleaning solvent (Federal Specifica-
tion PS-661 or equivalent). If the inside surface of
the cowling is coated heavily with oil and dirt, allow
solvent to soak until foreign material can be removed.
Wash painted surfaces of cowling with a solution of
A
mild soap and water and rinse thoroughly. After
washing, a coat of wax applied to painted surfaces is
recommended to prolong paint life. After cleaning,
inspect cowling for dents, cracks, and loose rivets
or spot welds. Repair all defects to prevent spread
of damage.
11-5. REPAIR. If cowling skins are extensively
damaged, new complete sections of the cowling
should be installed. Standard insert-type patches
may be used for repair if repair parts are formed
to fit contour of cowling. Small cracks may be stop-
drilled and small dents straightened if they are re-
inforced on the inner surface with a doubler of the
same material. Damaged reinforcement angles
should be replaced with new parts. Due to their
small Size, new reinforcement angles are easier
to jnstall than to repair the damaged part.
4
Detail A
1. Engine Cowling
3. Fuselage
6. Bracket
2. Quick-Release Fastener
4. Asbestos Seal
7. Firewall
5. Shock Mount
Figure 11-1. Engine Cowling
11-2 Change 3