Piper Cherokee LANCE, Service Manual

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PIPER CHEROKEE SIX / LANCE SERVICE MANUAL
03/27/08 II - HANDLING AND SERVICING
1C17
2-68. LUBRICATION INSTRUCTIONS.
Proper lubrication procedures are valuable for prolonging the service life of the airplane and as a means
of reducing the frequency of extensive and expensive repairs. The periodic application of recommended
lubricants to relevant bearing surfaces combined with cleanliness, as detailed in the following
paragraphs, ensures maximum efficiency and utmost service of all moving parts. Lubrication instruction
regarding locations, time intervals, and type of lubricants used are found in proper lubrication charts.
To ensure the best possible results from lubricant application, observe the following precautions:
NOTE: If the airplane is inactive for long periods of time, it should be lubricated in accordance with the
Lubrication Charts every 90 days.
a. Use only recommended lubricants. Where general purpose lubricating oil is specified, but
unavailable, clean reciprocating engine oil is a satisfactory substitute.
b. Check components for evidence of excessive wear and replace as necessary.
c. Remove all excess lubricants from components to prevent collecting dirt and sand in abrasive
quantities capable of causing excessive wear or damage to bearing surfaces.
2-69. APPLICATION OF GREASE.
When lubricating bearings and bearing surfaces with a grease gun, ensure gun is filled with new, clean
grease specified for the particular application before applying lubricant to grease fittings.
a. If a reservoir is not provided around a bearing, apply lubricant sparingly and wipe off excess.
b. Remove wheel bearings from wheel hub and clean thoroughly with suitable solvent. When
repacking with grease, ensure lubricant enters space between rollers in retainer ring. Do not pack
grease into wheel hub.
c. Use extra care when greasing constant speed propeller hub to avoid blowing clamp gaskets.
Remove one grease fitting while applying grease to other fitting until fresh grease appears at hole of
removed fitting. Uneven greasing effects propeller balance.
2-70. APPLICATION OF OIL.
CAUTION: AFTER THOROUGHLY WASHING AIRPLANE, ENSURE LANDING GEAR, FLIGHT
CONTROLS, FLAP TRACKS, ELEVATOR TRIM SCREW, AND ENGINE
COMPARTMENT ARE STILL PROPERLY LUBRICATED.
If specific lubrication instructions for certain components are not available, observe the following
precautions:
a. Apply oil sparingly, never apply more than enough to coat bearing surfaces.
b. Do not oil control cables.
CAUTION: BE CAREFUL NOT TO ADD TOO MUCH OIL, BECAUSE THE EXCESS WILL BE
THROWN OFF DURING OPERATION AND WILL CAUSE PITTING AND BURNING
OF THE MAGNETO POINTS.
c. Squeeze the magneto cam follower felts at regular inspection periods. If oil appears on fingers, do
not add oil. If the felt is dry, moisten with light oil.