Piper Cherokee LANCE, Service Manual

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PIPER CHEROKEE SIX / LANCE SERVICE MANUAL
II - HANDLING AND SERVICING 03/27/08
1C6
2-40. OIL SYSTEM. (ENGINE.)
2-41. SERVICING OIL SYSTEM.
The engine oil level should be checked before each flight and changed after 50 hours of engine
operation. During oil change, the oil suction screen(s) should be removed and cleaned, and when
installed, the oil filter cartridge replaced. Intervals between oil changes can be increased as much as
100% on engines equipped with full-flow (cartridge-type) oil filters provided the element is replaced
each 50 hours of operation. The engine manufacturer does not recommend oils by brand names. Use a
quality brand Aviation Grade Oil of the proper season viscosity. For information on the use of ashless
dispersant oil, refer to Paragraph 2-46 and / or the latest revision of Lycoming Service Instruction Letter
1014.
CAUTION: DO NOT INTRODUCE ANY TRADE ADDITIVE TO THE BASIC LUBRICANT.
2-42. DRAINING OIL SUMP.
To drain the oil sump, provide a suitable container with a minimum capacity of that required to fill the
sump. Remove the engine cowl and open the oil drain valve located on the underside of the engine by
pushing the arms of the drain up and turning counterclockwise. This will hold the drain in the open
position. It is recommended the engine be warmed to operating temperature to ensure complete draining
of the old oil.
2-43. FILLING OIL SUMP.
The oil sump should normally be filled with oil to the mark on the engine dipstick. The quantity of oil
required for the engines may be found in Table II-I. The specified grade of oil may be found in Table II-
VIII, Recommended Lubricating Oils, or on the right cowl panel or each engine oil filler access door. To
service the engine with oil, open the quick release access door on top of the cowl and remove the oil
filler cap with dipstick.
2-44. OIL SCREENS. (SUCTION.)
The oil suction screen is located on the bottom aft end of the engine sump, installed horizontally. To
remove, cut the safety wire and remove the hex head plug. The screen should be cleaned at each oil
change to remove any accumulation of sludge and to examine for metal filings or chips. If metal
particles are found in the screen, the engine should be examined for internal damage. After cleaning and
inspection, place the screen inside the recess in the hex head plug to eliminate possible damage to the
screen. Insert the screen into the housing and when certain that the screen is properly seated, tighten and
safety the plug with MS-20995-C41 safety wire.
2-45. OIL SCREEN. (PRESSURE.)
The oil pressure screen, located in a housing on the accessory case of the engine, between the magnetos,
should be cleaned at each oil change to remove any accumulation of sludge and to examine for metal
filings or chips. If metal particles are found in the screen, the engine should be examined for internal
damage. When reinstalling the screen, it is recommended that a new gasket be used. Ascertain that the
screen fits flush with the base surface of the screen housing. Position housing on mounting pad and
install attachment bolts. Torque bolts within 50 to 70 inch pounds.