SERVICING INTERVALS CHECK LIST
FIRST 25 HOURS
ENGINE OIL SUMP, OIL COOLER AND OIL FILTER --
After the first 25 hours of operation, drain the 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 the sump with straight mineral oil (non-deter
gent) and use until a total of 50 hours have accumulated or oil
consumption has stabilized, then change to detergent oil.
EACH 50 HOURS
BATTERY — Check and service. Check more often (at least
every 30 days) if operating in hot weather.
ENGINE OIL SUMP, OIL COOLER AND OIL FILTER — On
airplanes 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 airplanes 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
50 hours have accumulated. Reduce periods for prolonged
operation in dusty areas, cold climates, or when short flights and
long idle periods result in sludging conditions.
INDUCTION 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 BAY SUMP DRAINS -- Drain water and sediment.
FUEL VENT LINE DRAIN PLUGS — Drain water and sediment.
AUXILIARY FUEL PUMP FILTER — Remove and clean.
MAIN GEAR BEVEL/SECTOR GEARS — Inspect and lubricate.
SUCTION RELIEF VALVE INLET FILTER (OPT.) — Clean.
Replace at engine overhaul period.
ALTERNATE STATIC SOURCE DRAIN -- Remove cap and drain
condensate.
NOSE GEAR PIVOT POINTS — Lubricate.
5-8
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