HAM-STD Service Bulletins

Number of pages: 2Part Number: No. 164Revision Date: 10-Dec-1948Description: Ref 702 - Chapmanizing of Stepmotor Electric Head Gears

Number of pages: 2Part Number: No. 151Revision Date: 19-June-1948Description: Ref 646 - Rework of Electric De-Icer Bracket

Number of pages: 4Part Number: No. 153Revision Date: 19-June-1948Description: Ref 653 - Removal of Centrifugal Switch from Stepmotor Electric Head

Number of pages: 2Part Number: No. 157Revision Date: 30-Oct-1948Description: Ref 667 - New Bearing for Stepmotor, Ref 668 - Locking Solenoid Valve Seat, Ref 669 - Blade Shank Lacquers

Number of pages: 2Part Number: No. 161Revision Date: 30-Nov-1948Description: Ref 686 - Solder for Blade Slip Rings, Ref 687 - Change in Cement Designation, Ref 688 - Low Voltage Unreversing Termination Relay, Ref 689 - 22D40 Propeller Piston Sleeve and...

Number of pages: 2Part Number: No. 153Revision Date: 27-Aug-1956

Number of pages: 16Part Number: No. 174Revision Date: 8-April-1949

Number of pages: 2Part Number: No. 154Revision Date: 30-June-1948Description: Ref 655 - Modification of Internal Contactor Parts, Ref 656 - Scribed Index Lines on Blade Shanks

Number of pages: 2Part Number: No. 159Revision Date: 10-Nov-1948Description: Ref 674 - De-Icing Blade Brush Wear, Ref 675 - Oversize Electric De-Icer Dowels, Ref 676 - New De-Icer Insulating Plates and Attaching Screws, Ref 677 - Modification of Electric...

Number of pages: 2Part Number: No. 152Revision Date: 19-June-1948Description: Ref 648 - Identification of De-Icing Timer, Ref 649 - Grounding De-Icer Timer 70322, Ref 650 - Correction of Ref. 620, Ref 651 - Correction of Ref. 640

Number of pages: 2Part Number: No. 167Revision Date: 10-Jan-1949Description: Ref 709 - 23260 Model Propeller Barrel Design Change, Ref 710 - Lock Wrench Spacer, Ref 711 - New Design for Synchronizer Switch Block, Ref 712 - Change of Shim Plate Material,...

Number of pages: 2Part Number: No. 158Revision Date: 10-Nov-1948Description: Ref 671 - Blade Indexing of Model 43D50 and 43D60 Propellers, Ref 672 - Modification for Barrel Support Blocks