Cessna 150 Series Service Manual page 27

before saturating the engine with solvent. Any
NOTE
fuel, soil, and air openings should be covered
before washing the engine with solvent. Caustic During tire or tube change or when wheel is
cleaning solutions should not be used. After
otherwise disassembled, use dye penetrant to
cleaning engine, relubricate all control arms and inspect wheel hub.
moving parts.
If defects are found remove and repair in accordance
2-36. UPHOLSTERY AND INTERIOR. Keeping the with Section 5. Discard cracked wheel halves, flanges
upholstery and interior clean prolongs upholstery
or hubs and install new parts.
fabric and interior trim life. To clean the interior,
proceed as follows: 2-39. LUBRICATION.
a. Empty all ash trays and refuse containers.
b. Brush or vacuum clean the upholstery and carpet 2-40. Lubrication requirements are shown if figure
to remove dust and dirt.
2-5. Before adding grease to grease fittings, wipe dirt
c. Wipe leather and plastic trim with a damp cloth. from fitting. Lubricate until grease appears around
d. Soiled upholstery fabrics and carpet may be parts being lubricated, and wipe excess grease from
cleaned with a foam-type detergent used according to parts. The following paragraphs supplement figure
the manufacturer's instructions.
2-5 by adding details.
e. Oil spots and stains may be cleaned with house-
hold spot removers, used sparingly. Before using any 2-41. TACHOMETER DRIVE SHAFT. Refer to
solvent, read the instructions on the container and test Section 15 for details on lubrication of shaft.
it on an obscure place in the fabric to be cleaned.
Never saturate the fabric with volatile solvent; it may 2-42. WHEEL BEARINGS. Clean and repack the
damage the padding and backing material, wheel bearings at the first 100-hour inspection and at
f. Scrape sticky material from fabric with a dull each 500-hour inspection thereafter. If more than the
knife, then spot clean the area.
usual number of take-offs and landings are made,
extensive taxiing is required, or the aircraft is
2-37. PROPELLER. Wash hub and blades with a soft operated in dusty areas or under seacoast conditions,
cloth and Stoddard cleaning solvent or equivalent, cleaning and lubrication of the wheel bearings shall be
then dry thoroughly with compressed air. The pro- acomplished at each 100-hour inspection.
peller should be wiped occasionally with an oily cloth,
then wiped with a dry cloth. In salt water areas this
2-43. NOSE GEAR TORQUE LINKS. Lubricate
will assist in corrosion proofing the propeller. nose gear torque links every 50 hours. When
operating in dusty conditions, more frequent
2-38. WHEELS. The wheels should be washed
lubrication is required.
periodically and examined for corrosion, chipped
paint, and cracks or dents in the wheel halves, in the 2-44. WING FLAP ACTUATOR. Clean and lubri-
flanges or hubs, and especially around flange
cate wing flap actuator jack screw each 100 hours as
mounting screw holes. follows:
a. Expose jack screw by operating flaps to full-down
NOTE position.
b. Clean jack screw threads with solvent rag and dry
During 100 hour or annual inspections, check with compressed air.
socket head cap screws for proper torque (190 -
200 pound-inches). Loss of torque on socket head NOTE
is sign of cracks.
It is not necessary to remove actuator from
NOTE
aircraft to clean or lubricate threads.
When repacking wheel bearings, clean wheel c. With oil can, apply light coat of No. 10 eight non-
assembly, and using magnifying glass, sight detergent oil to threads of jack screw.
through opening to inspect webs around flange
mounting screw holes for cracks.
SHOP NOTES:
2-14 Change 1