Piper Comanche PA-24 Service Manual page 76

Cleaning.
2-21.
Cleaning Engine Compartment.
2-22.
Before cleaning the engine compartment, place a strip of tape on the magneto vents to prevent any
solvent from entering these units.
CAUTION: DO NOT SPRAY SOLVENT INTO THE GENERATOR OR ALTERNATOR, STARTER,
OR INTAKES.
a. Place a large pan under the engine to catch waste.
b. With the engine cowling removed, spray or brush the engine with solvent or a mixture of solvent
and degreaser, as desired. It may be necessary to brush areas that were sprayed where heavy grease
and dirt deposits have collected in order to clean them.
CAUTION: DO NOT OPERATE ENGINE UNTIL EXCESS SOLVENT HAS EVAPORATED OR
OTHERWISE BEEN REMOVED.
c. Allow the solvent to remain on the engine from five to ten minutes then rinse the engine clean with
additional solvent and allow to dry.
d. Remove the protective covers from the magnetos.
e. Lubricate controls, bearing surfaces, etc. per Lubrication Chart, Figure 2-20 thru 2-22.
Cleaning Landing Gear.
2-23.
a. Struts and Torque Links:
Before cleaning landing gear struts and torque links, place a plastic cover or similar material over
the wheel and brake assembly.
1. Place a pan under the gear to catch waste.
2. Spray (low pressure only) or brush the gear area with solvent or a mixture of solvent and
degreaser.
3. Allow the solvent to remain on the gear for five to ten minutes. Rinse gear with additional
solvent and allow to dry.
4. Remove cover from wheel and remove the catch pan.
5. Lubricate gear per Lubrication Chart, Figure 2-21.
b. Wheels and Brakes
CAUTION: DO NOT USE HIGH PRESSURE SPRAY WASH EQUIPMENT. ITS USE CAN
INJECT SOAP SOLUTION AND WATER INTO THE WHEEL BEARINGS AND
OTHER INTERNAL CAVITIES RESULTING IN CORROSION AND REDUCED
SERVICE LIFE.
1. Hand wash wheels and brakes with a mild soap and water solution.
2. Rinse with low-pressure spray.
3. Lubricate gear per Lubrication Chart, Figure 2-21, if not already done, above.
II - HANDLING AND SERVICING
PIPER COMANCHE SERVICE MANUAL
1C4
04/01/09