Piper COMANCHE PA-24-180 Service Manual page 403

PIPER COMANCHE SERVICE MANUAL
7B-3. Troublahoodng. Troubles peculiar to the power pnt are listed in Table VIIB-II in the back of this
section, along with their probable causes and suggested remedie. When roubleshooing engmies ground the
magneto prmary circuit before performing any checks on the igniuion system.
7B-4. Removal Of Engine Cowling.
a.
Release the quarter mur fastener securing theside cowling to the bottom cowl.-
b. Remove screws at the front and aft ends of the top cowl.
c. Remove the two nus, washens and screws ataching the top cowl to the firewall fitinp.
d. Lift the top cowl from the engine sembly.
e. Remove the bottom cowl access panel by loosening the quarter urn fastenen.
f. Disconnect ir intake hoses and drain ine from the nose cowl.
g. Disconnect cowl flap control cables.
h. Remove bottom cowl by removing screws securing bottom cowling at the firewall, nose cowl and
landing gear doon.
i.
Remove the nose cowl by pulling out hinge pins and separang it at the hinge.
7B-5. Cleaning, Inspection And Repair Of Engine Cowl.
a. Clean cowling with a suitable cleaning solvent and wipe dry with a clean cloth.
b. Inspect cowling for dents, cracks, loose rivets, elongated holes and damaged or mssing fasceners.
c.
Repur all defects to prevent further damage.
7B-6. Insullaion Of Engine Cowling.
a. Position the nose cowl halves on the front cf the engine and secure with hinge pins.
b. Raise the bottom cowl into position and secure with screws to the firewall, nose landing gear door
frame and the nose cowl.
c. Connect air hoses ro nose cowl and drain line to the bottom cowl
d. Connect cowl flap control cables.
e.
Install the cop cowl and secure support channels to firewall fittings with two screws, washers and
nus.
f.
Secure the fore and af ends of rhe top cowl with screws.
g. Install the bottom cowl access plare and secure with quarter urn fasteners.
7B-7. Propeller.
CAUTION
Before performing any service functions on the propeller, ascertain that
the master switch is "OFF", the magneto switches are "OFF" grounded
and the mLxture control in the "IDLE CUT-OFF" position.
POWER PLANT
ISSUED: 8/18/72
2 E21