Service Instructions - Air Filter Inspection And Replacement; Installation Of Air Filter; Engine Compartments Cleaning - Piper PA-44-180 SEMINOLE Maintenance Manual

SERVICE INSTRUCTIONS (INSPECTION AND REPLACEMENT).
1. The air filter must be inspected at least once every 50 hours. Under extremely adverse operating
conditions, it must be inspected more frequently. Replace as required.
2. When returning existing filter to service, rap gently on a hard flat surface to remove embedded debris.
Be careful not to damage sealing ends.
3. Inspect filter housing for damage.
4. The filter housing may be cleaned by wiping with a clean cloth soaked in a suitable quick drying type
solvent.

INSTALLATION OF AIR FILTER.

1. Properly position the filter in the box assembly and secure the cover assembly with the fasteners.
ALTERNATE AIR HEAT DOOR (PA-44-180).
The alternate air door is located in the bottom assembly of the carburetor air box to provide a source of heated
air to the carburetor should there be an icing condition. The following should be checked during inspection:
1. Check that the air door seals are tight.
2. Check that when the cockpit control is in the closed position that the door is properly seated in the closed
position.
3. Actuate the door by operating the control lever in the cockpit to determine that it is not sticking or
binding.
4. Check the cockpit control cable for free travel.
CLEANING.
ENGINE COMPARTMENTS.
Before cleaning the engine compartments, place a strip of tape on the magneto vents to prevent any solvent
from entering these units.
1. Place a pan under the engines to catch waste.
DO NOT SPRAY SOLVENT INTO THE ALT E R N ATOR, STA RTER, AIR
INTAKE, ALTERNATE AIR INLETS AND PRESSURE PUMP DRIVE AREA.
PIPER AIRCRAFT
PA - 4 4 - 1 8 0 / 1 8 0 T
AIRPLANE MAINTENANCE MANUAL
— CAUTION —
1D10
1 2 - 2 8 - 0 1
Page 12-10
Revised: May 15, 1989