Piper Cherokee LANCE, Service Manual

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PIPER CHEROKEE SIX / LANCE SERVICE MANUAL
II - HANDLING AND SERVICING 03/27/08
1C8
2-48. LANDING GEAR SYSTEM.
2-49. SERVICING LANDING GEAR.
The landing gear consists of tires, brakes, oleo strut assemblies and on some models wheel fairings.
These should be inspected for proper gear extension, scored piston tubes, possible hydraulic fluid
leakage, security and condition of all connection points and the fiberglass fairings for cracks. Check the
brake linings for wear and frayed edges, and brake discs for scoring. Replace if found necessary. In
addition, the PA-32R should be checked for proper adjustment of downlock hooks, looseness of drag
links and side brace links. Minor servicing is described in the following paragraphs, and for detailed
service and overhaul instructions. (Refer to Section VI or VIA.)
2-50. OLEO STRUTS.
2-51. SERVICING OLEO STRUTS.
The air-oil type oleo strut should be maintained at proper strut tube exposures for best oleo action. Refer
to Table II-I.
CAUTION: DO NOT EXCEED THESE TUBE EXPOSURES.
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 oscillated 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 2-55.
NOTE: Valves should be installed with a torque of 45 ft. lbs. The valve caps with bare threads should
also be torqued to 45 ft. lbs. while caps with phosphate coating torqued to 22.5 ft. lbs.
If the oleo 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 Paragraphs 2-52, 2-53 or 2-54. For repair
procedures of the landing gear and/or oleo struts, refer to Section VI or VIA.
WARNING: DO NOT RELEASE AIR BY REMOVING- THE STRUT VALVE CORE OR FILLER
PLUG. DEPRESS THE VALVE CORE PIN UNTIL STRUT CHAMBER PRESSURE
HAS DIMINISHED.
CAUTION: DIRT AND FOREIGN PARTICLES FORM AROUND THE FILLER PLUGS OF THE
LANDING GEAR STRUTS, THEREFORE, BEFORE ATTEMPTING TO REMOVE
THESE PLUGS, THE TOPS OF THE STRUTS SHOULD BE CLEANED WITH
COMPRESSED AIR AND/OR WITH A DRY SOLVENT.