Propeller: Typical Nicks And Removed Method; Propeller Torque Limits - Piper PA-44-180 SEMINOLE Maintenance Manual

EXAGGERATED VIEW OF
NICK IN LEADING EDGE
BEFORE
AFTER
NOTE: RECOMMENDED METHOD FOR REMOVING
NICKS, CRACKS, AND SCRATCHES IS BY
USING RIFFLE FILE AND/OR CROCUS CLOTH.
4. Observe the starter ring gear to make sure it is mounted properly on the engine crankshaft flange. One of
the bushings on the crankshaft is stamped with an "O" mark and it must be inserted in the starter ring gear
hole. Iikewise identified with an "O" mark.
5. Wipe crankshaft and propeller pilot to assure that no chips or foreign matter enter the propeller mechanism .
6. Check interior of propeller hub for proper seating of O-ring. Wipe inside of hub to remove any traces of dirt.
Check to see that O-ring is covered with grease.
7. Raise propeller into position so that each stud mates with an engine flange bushing and screw each stud in a
few threads at a time until all are tight. Torque to 60 to 70 foot pounds. (Refer to Figure 61-2 for additional
information on three blade propeller installation.)
8. Check the propeller blade track.
9. Safety the propeller mounting bolts with MS20995-C41 safety wire.
10. Install the spinner torque cap bolts 35 to 40 inch pounds.
DESCRIPTION
Propeller Mounting Nuts
Forward Bulkhead Attachment Bolts
Spinner Attachment Screws
PIPER AIRCRAFT
PA - 4 4 - 1 8 0 / 1 8 0 T
AIRPLANE MAINTENANCE MANUAL
EXAGGERATED VIEW OF
SURFACE CRACK
BLEND DEEPEST
PORTION OF NICKS
INTO LEADING EDGE
ALIGNMENT WITH
SMOOTH CURVES
Figure 61-1. Typical Nicks and Removed Method
CHART 6101. PROPELLER TORQUE LIMITS
3D4
EXAGGERATED VIEW OF
NICK IN FACE OF BLADE
CROSS-SECTION
BEFORE REPAIR
CROSS-SECTION
AFTER REPAIR
REQUIRED TORQUE
60 - 70 Foot-Pounds
20 - 22 Foot-Pounds
20 - 25 Inch-Pounds
Revised: May 15, 1989
6 1 - 11 - 0 3
Page 61-02