Piper Comanche PA-24 Service Manual page 168

(c) Each 500 Hours
III - INSPECTION
PIPER COMANCHE SERVICE MANUAL
1 Remove and flush oil radiator.
2 Clean and lubricate stabilator trim drum screw.
3 Remove propeller; remove sludge from crankshaft. Clean any residual sludge
clinging to the exterior of propeller / crankshaft mating surfaces.
4 Replace rudder hinge bolts.
5 Inspect torque link bolts and bushings (Rebush as required).
6 Inspect nose gear drag link bolts (Replace as required).
7 Replace bungee cords every 500 hours time-in-service or every three years,
whichever occurs first.
8 Lubricate flap transmission per the Lubrication Charts in Section II.
9 Lubricate landing gear retraction transmission per the Lubrication Charts in
Section II.
10 Lubricate control wheel chain, vertical and horizontal per the Lubrication
Charts in Section II.
11 If installed, replace the vacuum system inlet air filter (i.e., central air filter, gyro
filter, etc.) element each 500 hours time-in-service, annually, and at vacuum
pump replacement, whichever comes first.
12 Inspect and clean TCM/Bendix magneto(s) per the procedures in the Periodic
Maintenance section of the applicable Service Support Manual, available from
Teledyne Continental Motors, Inc., PH: (800) 718-3411, or
http://www.tcmlink.com/.
13 For airplanes which have not installed corrosion resistant Stabilator Attach Bolts
P/N 502-329 or 502-342, as applicable, each three (3) years or 500 hours time-
in-service, remove the four (4) stabilator attach bolts and inspect for corrosions.
Replace as required.
14 Replace rubber engine mount bushings.
15 If equipped, replace filters in gyro horizon and directional gyro.
1D30
04/01/09