Servicing Landing Gear; Servicing Oleo Struts - Piper PA-24 Comanche Service Manual

}·)O. Landing
Gear
System,
PIPER COMANCHE SERVICE MANl'AL
•
2-) I. Senicinx Landing Gear. The landing gear consisting of tires. brakes. oleo strut assembly. drag links.
do" n loeb and gear doors should be visually inspected to determine proper strut extension. possible
hydraulic tluid leakage, security and condition of all related components. Minor service is described in the
following paragraphs. and detailed service and
overhaul
instructions are listed in Section
VI.
MAIN
FIGl'RE 2·13. LASDING GEAR STRl'T (EXPOSl'RE)
::!-:~::!.
Oleo Struts.
2-~~.
Servicing Oleo Struts. The air-oil type oleo strut should be maintained at proper strut tube exposures
for best oleo action. (Refer to Figure
2-13.)
These measurements are taken with the airplane sitting on level
surface under normal static load. (Empty weight of airplane plus full fuel and oil.)
If
the strut has less tube
exposure than prescribed. determine whether it needs air or oil by rocking the airplane. If the oleo strut
oscillates with short strokes (approximately one inch) and the airplane settles to its normal position within
one or two cycles after the rocking force is removed. the oleo strut requires inflating, Check the valve core
and filler plug for air leaks. correct if required. and add air as described in Paragraph
2-35.
If the oleo strut
oscillates with long strokes (approximately three inches) and the airplane continues to oscillate after the
rocking force is removed. the oleo struts require fluid. Check the oleo for indications of oil leaks. correct
if
required. and add fluid as described in Paragraph
2-34.
For repair procedures of the landing gear and or
oleo struts. refer to Section VI.
WAR~I~G
Deflate strut air pressure before disassembly.
REVISED: 4/3/78
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