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PIPER AIRCRAFT
PA-42-720 (Advanced Trainer)
MAINTENANCE MANUAL
B. Lubrication Charts
WARNING: KEEP JET FUELS AND LUBRICATING OILS OFF OF SKIN.
CAUTION: DO NOT USE HYDRAULIC FLUID WITH CASTOR OIL OR ESTER BASE.
CAUTION: DO NOT APPLY LUBRICANT TO RUBBER PARTS.
Lubrication charts consists of individual illustrations for various aircraft systems with components
referenced by numbers and by type of lubrication and frequency of lubrication in hours. Special
instructions are listed at the beginning of lubrication chart and are referenced on each particular chart.
NOTE: Lubricate pilot and passenger seats track rollers and stop pins as required using general
purpose, low temperature lubricating oil (MIL-L-7870).
NOTE: Wheel bearings require cleaning and repacking after exposure to excessive quantity of water.
CHART 1
SPECIAL INSTRUCTIONS
(1) Clean exterior of bearings and bushings with dry solvent before relubricating.
(2) Disassemble oil cooler door, ice protection transmission, and screws. Trim screws
and wheel bearings; clean with dry solvent. When reassembling transmission,
lubricate and apply thin coating to screw.
(3) Fill oleo struts, power pack reservoir, and brake reservoir per instructions on unit or
container or container or refer to 12-10-00.
(4) Remove one of two propeller grease fitting for each blade. Apply grease through
fitting until fresh grease appears at hole of removed fitting.
(5) Wipe all lubrication points clean of old grease, oil, dirt, etc, before relubricating.
(6) Clean or replace oil filter element (refer to 12-10-00) after usage of 50 hours or
less. Change engine oil every 400 hours or 9 months, whichever comes first.
(Refer to latest Pratt & Whitney Canada Service Bulletin No. 13001 for a list of
approved oils.)
(7) Loosen boot from gear lock assembly and grease cable.
EFFECTIVITY:
040-999
PAGE 22-20-00
Jan 10/90
12-2O-00
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