Lubrication Instructions; 1C41; Precautions; Application Of Oil - Piper Comanche PA-24 Service Manual

Lubrication Instructions.

2-82.
Proper lubrication procedures are valuable both as a means of prolonging the service life of the airplane
and reducing the frequency of repairs. The periodic application of recommended lubricants to their
relevant bearing surfaces, together with cleanliness, ensures the maximum efficiency and utmost service
of all moving parts. Instructions regarding the locations, time intervals, and type of lubricants used may
be found in the Lubrication Chart, Figures 2-20 thru 2-22. See also Table II-XIII Consumable Materials.
NOTE: If the airplane is inactive for long periods of time, lubricate in accordance with Lubrication
Charts at least every 90 days.
2-82a. Precautions.
To insure the best possible results from the application of lubricants, the following precautions should be
observed:
CAUTION: MIL-PRF-23827 AND MIL-PRF-81322, CONTAIN CHEMICALS WHICH MAY BE
HARMFUL TO PAINTED SURFACES.
CAUTION: DRY LUBRICANT (I.E. - PTFE BASED MS-122) WILL ATTACK ANY ACRYLIC
BASED PLASTIC (LUCITE), POLYCARBONATES (LEXAN), POLYSTYRENE AND
ITS COPOLYMERS (ABS), AND CELLULOSE ACETATE.
CAUTION: AFTER THOROUGHLY WASHING AIRPLANE, ENSURE LANDING GEAR, FLIGHT
CONTROLS, FLAP TRACKS, STABILATOR TRIM SCREW, AND ENGINE
COMPARTMENT ARE STILL PROPERLY LUBRICATED.
a. Use recommended lubricants. Where general purpose lubricating oil is specified, but unavailable,
clean engine oil may be used.
b. Check the components to be lubricated for evidence of excessive wear and replace as required.
c. Remove excess lubricant from components to prevent collecting dirt and sand in quantities capable
of causing excess wear or damage to bearing surfaces.

Application of Oil.

2-83.
Whenever specific lubrication instructions for individual components are not available, observe the
following precautions:
a. Apply oil sparingly, never more than enough to coat the bearing surfaces.
b. Do not oil control cables.
c. For Bendix Magnetos only: 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.

Application of Grease.

2-84.
Before using a grease gun, ensure that gun is filled with new, clean grease of the grade specified for the
particular application.
a. Where a reservoir is not provided around a bearing, apply the lubricant sparingly and wipe off any
excess.
b. Remove wheel bearings from the wheel hub and clean thoroughly with a suitable solvent. When
repacking with grease, be sure the lubricant enters the space between the rollers in the retainer ring.
Do not pack the grease into the wheel hub.
04/01/09
PIPER COMANCHE SERVICE MANUAL
II - HANDLING AND SERVICING

1C41