Piper Aircraft Corporation Cherokee 140 PA-28-140, Service Manual

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PIPER CHEROKEE SERVICE MANUAL
01/31/08 II - HANDLING AND SERVICING
1E7
2-56. SERVICE INSTRUCTION. (CLEANING AND INSPECTION.)
a. The filter should be cleaned daily when operating in dusty conditions and if any holes or tears are
noticed, the filter should be replaced immediately. For type of replacement filter, refer to PA-28
Parts Catalog.
CAUTION: NEVER WASH THE FILTER ELEMENT IN ANY LIQUID OR SOAK IN OIL.
NEVER ATTEMPT TO BLOW OFF DIRT WITH COMPRESSED AIR.
b. Remove the filter element and shake off loose dirt by tapping on a hard surface, being careful not to
damage or crease the sealing ends.
c. The filter housing can be cleaned by wiping with a clean cloth soaked in suitable quick drying type
solvent. When the housing is dry, reinstall in accordance with Paragraph 2-56.
2-57. INSTALLATION OF AIR FILTER. After cleaning and inspection, install the filter element and cover in
reverse order of removal instructions.
2-58. PROPELLER.
2-59. SERVICING PROPELLER. The spinner, back plate and propeller surfaces should be cleaned and
inspected frequently for freedom from nicks, scratches, corrosion and cracks. Minor nicks and scratches
may be removed as found in Section VIII or VIIIA. The face of each blade should be painted when
necessary with a flat paint to retard glare. To prevent corrosion, wipe surfaces with a light oil or wax.
In addition, constant speed propellers should be inspected for absence of grease or oil leakage and
freedom of rotation on the hub pilot tube. To check freedom of rotation, rock the blade back and forth
through the slight freedom allowed by the pitch change mechanism. Lubricate the propeller at 100-hour
intervals in accordance with the Lubrication Chart.
Additional service information for the propeller may be found in Section VIII or VIIIA.
2-60. FUEL SYSTEM.
2-61. SERVICING FUEL SYSTEM.
a. At intervals of 50 hours or 90 days, whichever comes first, clean the fuel screens and/ or filters as
follows:
1. PA-28-140; PA-28-150, -160, -180. The fuel strainer screen, located in the fuel bowl, mounted
on the lower left side of the fire wall; the screen in the electric fuel pump, located at the lower
left side of the engine compartment; and the screen in the inlet side of the carburetor.
2. PA-28-235. The screens and bowl of the fuel filter unit of the fuel selector and the screen of the
electric fuel pump(s), located in the area under the rear seat aft of the main spar; and the screen
located in the inlet side of the carburetor.
3. PA-28R. The fuel strainer screen, located in the fuel bowl mounted on the lower left side of the
fire wall; and the screen in the inlet side of the injector.
b. Remove and clean the screens in accordance with the instructions outlined in Section IX. Additional
service information is given in Section IX. Inspection intervals of the various fuel system
components is given in Section III.