Piper Comanche PA-24 User Manual

PIPER COMANCHE SERVICE MANUAL
e. Mount propeller on eDgine. Screw each stud (7) intO its matinS flaqe bushing a few thrnds at a
time until all are tight. Torque bolts to specifications si"cn in Table VilA·!. Safety the mounting bolts with
MS20995C41 wire. routinS the wire through the lock pills (8).
f. Cbeck blade mck pet pangn;>h 7,\·22.
g. Check low pitch blade angle. (Refer to paragraph 7A·21.)
b. I nsWl eDJlIIe cowling if remo.ed.
i. Install spinner (1) and secure with screws.
7A·21.
Adjusana" Of Low Pircb Blade ADtle Stop.
a. Tbe propeller com .. from ,he factory with the low pitch stOp adjusted for proper blade angle. If.
bowever. this adjustment
bas been disturbed. the following procedure is si"cn for obtaining blade angle,
1. The blade angle (Refer to Table Vll,\·[) is dermnincd by placing a propeller protractor on the
face side
of the propeller. at the 30 inch station. as measured from the bub center line. Tbe blade must be
horizontal.
2. The low pitch stop adjwanent is made by a screw in the nose of the propeUer cylinder.
Roatin, the screw dockwlSC inc:reun the low pitch and reduces the Static RP.\t by abou.t 100 RPM. for
ea.ch half rum; or vice versa.
b. After the low pitch StOp bas been adjusted for proper blade angle. the go.emor should then be
adjusted '0 obtain maxunum rared engine RPM dunng rake-off and climb as descnbed ui paragrapb 7 A·27.
7 ,\·22. Blade T"",k. Blade traCk is the ability of ODe blade tip to follow the other. wbile rotating. in
almost che sanlC plane. Excessive difference in blade ttack . more than .0625 inch· alay be an indkatlon of
bent bladeS or improper propeUer installation. Check blade traCk as foUows,
a. With the cngine shu.t down and blades vmica.1. secure to the wcnft a smooth baud JUSt under the
tip
oi ,be lower blade .. \Io.e the tip iore and att througb Its fuU "bl.de1hake" myel. making small marks
Wltn 1 pcncLi at each posit10n. Then center che np between these marks Uld scribe a. line on the board for
'he full width of the "p.
b. Carefully rota.te propeUer by hand co bnng the opposite blade down. Center the tip and scnbe a
pencil line
as before ~d check that hnes are not separated more th:ut .0625 inch.
c. Propellers having e:'tceu blade crack should be removed and inspected for bent blades or for partS
of sheared "0" nng. or forcign ?articles. which have lodged between h'ub and .;:rankshait mouncing bces
Bent blades will require repair and overhaul of a.s.scmbly
2 C13
POWER PLANT
ISSUED: 8/18172

Piper Comanche PA-24 Specifications

General

Manufacturer	Piper Aircraft
Model	Comanche PA-24
Type	Light aircraft
First Flight	May 24, 1956
Number Built	4, 857
Seating Capacity	4
Engine	Lycoming O-360
Wingspan	36 ft (11 m)
Length	24 ft 8 in (7.5 m)
Stall Speed	62 mph (100 km/h, 54 kn)
Height	7 ft 6 in (2.3 m)