Inflating Oleo Struts - Piper Cheyenne IIIA Airplane Maintenance Manual

PIPER AIRCRAFT
PA-42-720 (Advanced Trainer)
MAINTENANCE MANUAL
N. Filling Oleo Struts (continued)
NOTE: An airtight connection is necessary between plastic tube and valve stem. Without an
airtight connection, a small amount of air is drawn into oleo strut during each sequence,
resulting in inordinate amount of air bubbles and prolonged filling operation.
6. Extend oleo strut by pulling down on wheel and drawing fluid into oleo strut. Continue
compressing and extending oleo strut until it is full of fluid and air bubbles cease to appear in
plastic tube.
7. Slowly compress strut to fully compressed position.
8. Remove plastic tube. Reinstall valve core (if applicable).
9. Inflate oleo struts according to information in Figure 12-2.
10. Tighten air valve (if applicable).
NOTE: For accurate oleo strut inflation, the aircraft must be placed on jacks with the weight of
the aircraft off of the wheels.
O. Inflating Oleo Struts
Ensure oleo strut contains sufficient fluid (described in Landing Gear Oleo Struts). Attach strut pump
to air valve and pump up oleo strut. Before capping valve, check for valve core leakage.
MAIN GEAR
INSTRUCTIONS FOR SERVICE
(SEE MAINTENANCE MANUAL FOR
SERVICING WITH MIL - H - 5606
(RED) HYDRAULIC FLUID). WITH
NO LOAD ON STRUT, INFLATE TO
435 psi.
NOSE GEAR
INSTRUCTIONS FOR SERVICE
(SEE MAINTENANCE MANUAL FOR
SERVICING WITH MIL - H - 5606
(RED) HYDRAULIC FLUID). WITH
NO LOAD ON STRUT, INFLATE TO
350 psi.
Servicing Landing Gear Shock Struts
Figure 302
EFFECTIVITY:
040-999
12-10-00
Jan 0/90