Piper Navajo PA-31 Service Manual page 50

PIPER NAVAJO SERVICE MANUAL
2-42. CLEANING.
2-43. CLEANING ENGINE COMPARTMENT. Before cleaning the engine compartment, place a plastic
cover or similar material around the pressure pump inlet filter and a strip of tape on the magneto vents to
prevent any solvent from entering these units.
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. If 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 spray solvent into the alternator, starter, air intake, and
alternate air inlets.
c. Allow the solvent to remain on the engine from five to 10 minutes, then rinse the engine clean
with additional solvent and allow to dry.
CAUTION
Do not operate engine until excess solvent has evaporated or
otherwise been removed.
d. Remove the protective covers from the filter and magnetos.
e.
Lubricate controls, bearing surfaces, etc., per Lubrication Chart.
2-44. CLEANING LANDING GEAR. Before cleaning the landing gear. place a plastic cover or similar
material over the wheel and brake assembly.
a. Place a pan under the gear to catch waste.
b.
Spray or brush the gear area with solvent or a mixture of solvent and degreaser, as desired. If may
be necessary to brush areas that were sprayed where heavy grease and dirt deposits have collected in order
to clean them.
NOTE
If desired, the inboard gear doors may be lowered by actuating the
emergency hand pump handle, with the master switch off.
c.
Allow the solvent to remain on the gear from 5 to 10 minutes, then rinse the gear with additional
solvent and allow to dry.
d.
Remove the cover from the wheel and remove the catch pan.
e.
Lubricate the gear per Lubrication Chart.
Reissued: 10/12/79
HANDLING AND SERVICING
1C2