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. }·)O. Landing Gear System, 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. HA!'iDLISG A!'iD SER\'ICl. REVISED: 4/3/78 lC6