Piper PA-24 Comanche Service Manual page 401

Seeute the fore and aft ends of the top cowl with screws.
Install the bottom cowl access plate and secure with quarter tum fastenm.
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PIPER COMANCHE SERVICE MANUAL
0 .
7B·3. TroubiahooQnI' Troubles peculiar to the power plant are listed in Ta.ble vtIB-1l in the back of this
5eC'tion. along with their probable auses and sulJlested remedies. When trOubleshooting engines. ground the
magneto primary circuit before performing any chew on the ilJUtion system.
78-4.
a_oval
Of tap.
CowliD,.
a. Release the quarter tum fasteners sec:uriftl the side cowlinJ to the bottom cowl.
b. Remove
$CI'CWS
a.t the front
and aft ends of the tOP cowl.
c. Remove the
twO
nUtl. wubas and
sc:ft'WI
attaebi,. the top cowl to the firewall fittings.
d. Lift the top cowl from the eapse aacmbiy.
e. Remove the bottom cowl acceu panel by lOOscNq the qullter tum fasteners.
f.
Disconnect air intake hoses and drain line from the nose cowl.
g. Disconnect cowl flap contrOl cables.
h. Remove bottom cowl by removinl screws sccuriDt bottom cowlint at the firewall. nose cowl and
landing
gear
doors.
r,
Remove the nose cowl by pullinJ OUt hinlc piDsand scpu'URI it at the hinJe.
iB-S.
CleaniDJ.lftspccUon ADd
Repair Of Enpc Cowl.
a. Clean cowling with a suitable claninl solvent and wipe dry with a dean doth.
b.
InspeC't cowlinl for dents. cnclts. loose riVets. elonpmi holes and damaged or
mislinC
f&.steners.
c. Repair all ddects to prevent further damage.
iB~.
InstaUadoD
Of Enpnc
CowUnJ.
.&.
POSItion the nose cowl halves on the front c:f the enpe and secure with hinp pins.
b. Raise the bottom cowl Into position and sccure with screws to the fl1'ewall. nose landing gear door
frune and the aese cowl.
c. Connect air hoses to nose cowl and drain line to the bOttOm cowl.
d. Connect cowl flap control cables.
c. Install the top cowl and secure suppOrt channels to fuewall fittings with
twO
screws. washers and
nuts.
£.
g.
7B-7. PropeUer.
CAUTION
Bdore pcrfomUfti any service functions on the propeller. ascertain that
the master switch is
"OFF",
the mqneto switches uc
"OFF"
grounded
and the mi.xture control is in the "IDLE Cl'T.()FF"
position.
POWER PLANT
ISSUED: B/18n2
2 E21