Piper COMANCHE PA-24-180 Service Manual page 345

PIPER COMANCHE SERVICE MANUAL
7A-16 Cleaning. Inspection And Repair.
The instructions for cleaning. inspection and repair of the Hart7ell propeller a re the same as those gix en
lor the McCaule propeller in paragraph 7A-13
7A-17 Installation Of Propeller. (Hartzell) (Refer to Figure 7A-3 )
a
Position the spinner bulkhead (4) against the starter ring gear support (5) so that one arro\\ lines
up with the TCI on the front face of the support.
b
Secure the spinner bulkhead to the starter ring gear support vwith 12 bolts (6). 12 nuts (9). and 24
washers (3) (one under the bolt head and one under each nut) Carefully tighten nuts uniformly to torque
limits shown in Table VIIA-I
c
Clean the propeller and engine flanges
d
Obser\e the starter ring gear to make sure it is mounted properly on the engine crankshaft flange
The crankshaft flange is stamped with an "O" mark and the starter ring gear is likewise identified b\ an
"O" mark
U
pon installation of the starter ring gear. the markings shall be mated to insure proper installation
e
Install "O" ring (10) and shim (I I) on engine shaft
CAUTION
It is absolutely essential that shim ( I ) be installed. as failure to do so
max result in failure of the mounting bolts due to relati e movement
of the two flanges
f
Raise the propeller into position with the engine and slide the propeller onto the propeller mounting
bushings
g
Install the hexagon-head propeller hub mounting bolts in the propeller hub and tighten them to
the torque given in Table VIIA-I
h
Check blade track (Refer to paragraph 7A-22)
I
Salet!-\\ire the mounting bolts and install spinner
7A-18 Removal Of Propeller. (PA-24-260) (Refer to Figure 7A-4 )
a
Ascertain that the master switch and magneto switches are in the OFF position
b Remove the spinner
I ) b\ remo ing the screws that secure it to the spinner bulkhead ( 10)
c
On airplanes with serial nos 24-4783 and 24-4804 and up. remo\e engine cohling (Refer to
paragraph 7A-8 )
d Place a drip pan under the propeller to catch oil spillage
e
Cut safety wire around the propeller mounting studs (7) and remove the studs from the engine
flange The nuts are frozen and pinned to the studs. so the studs will turn with the nuts
f Pull the propeller from the engine shaft
Remo\e the propeller O-ring (9) from the propeller hub O-ring grooxe
h The spinner bulkhead (10) may be removed from the starter ring gear (1I) b\ remo\ing nuts.
washers and bolts
ISSUED: 8/18/72
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POW ER PLANT
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