Servicing Intervals Check List; Each 50 Hours; Each 100 Hours; Each 500 Hours - Cessna 150 1969 Owner's Manual

SERVICING INTERVALS CHECK LIST
EACH SO HOURS
BATTERY - - Check and servic e. Check oftener (at least every 30 days)
if operating in ho t weather.
ENGINE OIL AND OIL FILTER -- Change e ng ine oil and replace filter
element. IT optional oil filter is not installed, change oil and clean screen
every 25 hours. Change engine oil at least every four months even though
less than 50 hours have been accumulated. Reduce periods for prolonged
operation in dusty areas, cold climates, or when short flights and long
idle periods result in sludging conditions.
NOTE
Afte r first 20 to 30 hours of engine operation, an initial
oil c hange should be made to remove ''break-in" oil and
change the filter, if installed.
CARBURETOR Am FI LTER - - Clean or r eplace. Under extremely dusty
conditions, daily maintenance of the filter is recommended.
NOSE GEAR TORQUE LINKS -- Lubricate. When operating under dusty
conditions, more frequent lubrication is r ecom mended .
EACH 100 HOURS
BRAKE MASTER CYLINDERS - - Check and fill.
SHIMMY DAMPENER -- Check
and fill.
FUEL STRAINER -- Disassemble and clean.
FUEL TANK SUMP DRAINS -- Drain water and sediment.
FUEL LINE DRAIN PLUG -- Drain water and sediment.
SUCTION RELIEF VALVE INLET FILTER (OPT) -- Clean. Replace at
eng ine overhaul period .
SPARK PLUGS - - Clean, test and regap .
EACH 500 HOURS
VACUUM SYSTEM AIB F ILT ER (OPT) - - Replace filter element. Re-
place sooner if suction gage reading dr ops to 4. 6 in. Hg .
WHEEL BEARINGS - - Lubricate at first 100 hours a nd at 500 hours there-
after. Reduc e- lubrication interval to
100
hours when ope rating in dusty
or seacoast areas, during periods of extensive taxiing, or when numerous
take - offs and landings a r e made.
AS REQUIRED
NOSE GEAR SHOCK STRUT - - Keep filled with fluid and inflated to 20 psi.
Do not over -inflate .
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