Engine Removal - Piper PA-44-180 SEMINOLE Maintenance Manual

REMOVAL OF ENGINE. (Refer to Figure 71-1.)
1. Make sure all electrical switches are turned off, and the battery ground wire is disconnected at the battery.
2. Move the fuel selector to its off position.
3. Remove the engine cowls. On the 180T a sniffle valve, attached to the inboard side of each bottom cowl,
must be removed from the cowl or disconnected from the manifold bleed line.
4. Remove the propellers per instructions in Chapter 6. Make sure to cap or cover the end of the crankshaft.
After disconnecting any fuel, oil, or vacuum lines, make sure they and their fittings
are capped. To prevent any question arising at installation as to where certain lines or
fixtures need to be connected, items should be "TAGGED" or identified before
separation.
5. Remove the positive and ground leads from the starter. Disconnect from the engine mount and move the
leads clear of the engine. For the 180T also refer to Step 7, A.
6. The PA-44-180 engine is removed as follows:
A. Disconnect the primer system hose from the tee fitting at the rear of the engine, and tie it back out of
the way of the engine.
B. Disconnect the throttle, mixture, and carburetor heat controls and make sure they will not interfere
with removal. The carburetor can be removed if desired.
C. Disconnect the prop control cable from the governor and dismount the cable from the engine. Move
the cable out of the way, so as not to interfere with engine removal.
D. Separate the fuel supply hose from the "L" fitting at the rear of the engine and make sure it is clear of
the engine.
E. Remove the tubes from the intake drain valves, at the bottom of the engine.
F. Remove the ignition leads from the spark plugs, so they can be made clear of the engine mount. Tag
and note the leads as to which cylinder they affect, unscrew the support clamps, and cut the tie raps
retaining the leads to the engine mount. Remove the necessary grommets in the baffles and pull the
leads back to the rear of the engine. The leads and distributor caps should be removed from the
magnetos (making sure they are noted as to their installation), or coiled and wrapped so they can be
tied to the back of the engine to keep them out of the way.
7. The PA-44-180T engine is removed as follows:
A. Remove the safety wire and bolts retaining the magnetic pickup and bracket to the front of the engine.
B. Follow the cable for the primer solenoid back through the rear baffle and separate the plug. If the plug
is attached to the magneto harness, remove the tie rap and move the cable leading to the fuselage, clear
of the engine. The magnetic pickup must be protected against any adverse handling and should
therefore be taped or tied up out of the way.
C. Disconnect the fuel pump drain line and pressure feed line from their fittings on the pump, and
disconnect the pressure feed line from the carburetor. These lines must be made clear of the engine
before removal.
D. Unbolt the fuel supply hose from the fitting on the left rear side of the engine and make sure it is clear
of the engine during removal.
E. Remove the air cooling hose held to the fitting mounted on the left rear baffle.
PIPER AIRCRAFT
PA - 4 4 - 1 8 0 / 1 8 0 T
AIRPLANE MAINTENANCE MANUAL
— Note —
3E6
7 1 - 0 3 - 0 0
Page 71-08
Revised: May 15, 1989