Cessna 1973 172 - SERVICING INTERVALS CHECK LIST; Scheduled Maintenance Intervals

SERVICING INTERVALS CHECK LIST
FIRST 25 HOURS
ENGINE OIL SUMP, OIL COOLER AND OIL FILTER -- After first 25
hours of operation, drain engine oil sump and oil cooler and clean both
the oil suction strainer and oil pressure screen. If an optional oil filter
is installed, change filter element at this time. Refill sump with straight
mineral oil (non-detergent) and use until a total of 50 hours have accumu-
lated or oil consumption has stabilized, then change to detergent oil.
EACH 50 HOURS
BATTERY — Check and service. Check oftener (at least every 30 days)
if operating in hot weather.
ENGINE OIL SUMP, OIL COOLER AND OIL FILTER -- On aircraft not
equipped with an optional oil filter, drain the engine oil sump and oil
cooler and clean both the oil suction strainer and oil pressure screen.
On the aircraft which have an optional oil filter, the oil change interval
may be extended to 100-hour intervals providing the oil filter element is
changed at 50-hour intervals. Change engine oil at least every four
months even though less than the recommended hours have accumulated.
Reduce intervals for prolonged operation in dusty areas, cold climates,
or when short flights and long idle periods result in sludging conditions.
CARBURETOR AIR FILTER — Clean or replace. 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 recommended.
EACH 100 HOURS
SPARK PLUGS -- Clean, test and regap.
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 SELECTOR VALVE DRAIN PLUG — Drain water and sediment.
SUCTION RELIEF VALVE INLET SCREEN (OPT) -- Clean.
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