Piper COMANCHE PA-24-180 Service Manual page 55

PIPER COMANCHE SERVICE MANUAL
2-34. Filing Oleo Suru. To fill the nose or main ger oleo srut with fluid (MIL-H-5606). whether it be
only the addition of a mall amount or if the unit ha been completely emptied and will require a lrge
amount, it should be filled as follows:
WARNING
Do not release air by removing the irut valve core or filler plug.
Depress the valve core pin until srt
chamber presure ha diminished.
CAUTION
Dirt and foreign partidce form around the filler plug of the landin
gear srus, therefore, before actempting to remove tbes plup, the tops
of the strut should be cleaned with compressed air nd/or with a dry
type solvent
a. Place he airplane on jacks (Refer to Jacking, Paagrph 2-11.)
b. Place a pan under the gear to catch spillage.
c. At the filler plug, relieve air pressure from the sruc housing chmber by removing the cap from
the air valve and depresing the valve core
d. There re two methods by which the strut chamber may be filled and these are
a
foUs:
First Method:
1. Remove the valve core from the filler plug at the top of the nose ger strut housing or at the
top inboard side of the main gear housing. Allow the filler plug to remsin installed.
2. Atcach one end of a clean plastic hose to the valve stem of the filler plug and submerge the
other end in a container of hydraulic fluid.
NOTE
An air-ight connection s necessary between the plastic tube and the
valve stem. Without such a connecuon, a small amount of air will be
sucked into the oleo srut during each sequence, resuling in an
inordina e amount of air bubbles and a prolonged filling operation.
3. Fully compress and extend the srut thus drawing fluid from the fluid contaner and expelling
air from the srut chamber. By watching the fluid pass through the plastic hose, it can be determined when
the scru is full and no air is present in the chamber.
4. When air bubbles cease to flow through the hose, compress the scrur fully and remove the
hose from the valve stem.
5. With the strut compressed, remove the filler plug to determine that the fluid levd is visible up
to the bottom of the filler hole.
HANDUNG AND SERVICING
REVISED: 4/3/78
1C7