Propeller Owner’s Manual
139
MAINTENANCE PRACTICES
61-00-39
Page 6-1
Rev. 17 Apr/20
MAINTENANCE PRACTICES - CONTENTS
1. Cleaning ...................................................................................6-3
A. General Cleaning ...............................................................6-5
B. Spinner Cleaning and Polishing ........................................6-7
2. Lubrication ...............................................................................6-7
A. Lubrication Intervals ..........................................................6-7
B. Lubrication Procedure .......................................................6-8
C. Approved Lubricants ........................................................6-11
3. Beta Feedback Block Assemblies ..........................................6-12
A. Inspection ........................................................................6-12
B. Replacement of A-3026 Carbon Block Unit
in the A-3044 Beta Feedback Block Assembly ................6-14
C. Installation of the A-3044 Beta Feedback
Block Assembly ...............................................................6-14
4. Aluminum Blades ...................................................................6-15
A. Important Information ......................................................6-15
B. Repair of Nicks and Gouges ............................................6-16
C. Repair of Bent Blades ......................................................6-19
5. Blade Paint Touch-Up ............................................................6-21
A. Important Information ......................................................6-21
B. Paint ................................................................................6-21
C. Procedure ........................................................................6-22
6. Dynamic Balance ...................................................................6-24
A. Overview ..........................................................................6-24
B. Inspection Procedures Before Balancing ........................6-25
C. Modifying Spinner Bulkhead to Accommodate Dynamic
Balance Weights ..............................................................6-25
D. Placement of Balance Weights for Dynamic Balance .....6-26
7. Hydraulic Low Pitch Stop Setting ...........................................6-27
A. Hydraulic Low Pitch Stop Adjustment ..............................6-27
8. Feathering Pitch Stop Settings ..............................................6-27
A. Feathering Pitch Stop Adjustment ...................................6-27