Aircraft Alternator
Maintenance Manual
24-30-01
ES1031
Page: iv Rev.
B: 20 Apr. 2022
© 2022 - Hartzell Engine Technologies - All rights reserved
A. Equipment ....................................................................................................................................5-1
B. Precautions ..................................................................................................................................5-2
A. Arc Marks on Terminals (Visual Inspection): ...............................................................................5-2
B. Bearing Inspection (For Troubleshooting Purposes): ..................................................................5-2
C. Field Circuit Open or Ground Test Procedure: ............................................................................5-3
D. Mounting Hardware: .....................................................................................................................5-3
E. Insulators (Washers and Spacers): ..............................................................................................5-3
F. Brush holder, Brushes and Springs: ............................................................................................5-3
G. Pulley Run Out Check: .................................................................................................................5-4
A. Alternator Output Test Conditions ................................................................................................5-4
B. Ventilation .....................................................................................................................................5-4
C. Order of Tests ..............................................................................................................................5-5
D. Test Setup ....................................................................................................................................5-5
6.1 General ...............................................................................................................................................6-1
6.2 Bi-Annual Maintenance ......................................................................................................................6-1
6.3 Torque Information .............................................................................................................................6-2
6.4 Alternator Drive Coupling Inspection & Maintenance .......................................................................6-2
6.5 Alternator Belt & Pulley Inspection & Maintenance ............................................................................6-4
6.6 Removal from the Aircraft (Belt Drive) ...............................................................................................6-5
6.7 Exterior Cleaning (direct drive or belt drive) .......................................................................................6-7
6.8 Brush Removal
6.9 Through Bolts .....................................................................................................................................6-8
6.10 Terminal Hardware Removal and Installation ...................................................................................6-10