MAINTENANCE PRACTICES
61-00-36
Page 6-25
Rev. 2 Feb/17
Propeller Owner's Manual
136
C. Modifying Spinner Bulkhead to Accommodate Dynamic
Balance Weights
CAUTION:
ALL HOLE/BALANCE WEIGHT LOCATIONS
MUST TAKE INTO CONSIDERATION,
AND MUST AVOID, ANY POSSIBILITY
OF INTERFERING WITH THE ADJACENT
AIRFRAME, PROPELLER ICE
PROTECTION SYSTEM, AND ENGINE
COMPONENTS.
(1) It is recommended that balance weights be placed in a
radial location on aluminum spinner bulkheads that have
not been previously drilled.
(2) The radial location should be outboard of the de-ice slip
ring or bulkhead doubler and inboard of the bend where
the bulkhead creates the flange surface to attach the
spinner dome.
(3) Twelve equally spaced locations are recommended for
weight attachment.
(4) Installing nut plates (10-32 thread) of the type used to
attach the spinner dome will permit convenient balance
weight attachment on the engine side of the bulkhead.
(5) Alternatively, drilling holes for use with the AN3-( ) type
bolts with self-locking nuts is permitted.
(6) Chadwick-Helmuth Manual AW-9511-2, “The Smooth
Propeller”, specifies several generic bulkhead rework
procedures. These are permitted if they comply with the
conditions specified herein.
Содержание B-4270
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