EM NAME  GENERATOR,ENGINE AC

DEFINITION  A generator primarily designed to be mounted on an internal combustion engine, and to be driven by the engine to keep the battery in a  charged condition. May also supply current for the engine ignition system and/or electrical equipment which is connected to the battery              circuit. Includes alternating current generators designed for use with a rectifier. Excludes the major generator of “GENERATING SETS”. For             generators specifically designed for aircraft use and not mounted on the engine, see GENERATOR, DIRECT CURRENT.

CHARACTERISTIC                          VALUE

THREAD PITCH DIAMETERS             0.6324 TO 0.6365 INCHES                          

THREAD DIRECTION                        RIGHT-HAND                                       

THREAD LENGTH                             0.453 INCHES MINIMUM AND 0.547 INCHES MAXIMUM    

FURNISHED ITEMS                          WOODRUFF KEY                                     

SECOND STEP DIAMETER                0.6684 INCHES MINIMUM AND 0.669 INCHES MAXIMUM   

KEYWAY WIDTH                              0.125 INCHES NOMINAL                             

UNTHREADED PORTION LENGTH       0.750 INCHES MINIMUM AND 0.844 INCHES MAXIMUM    

MOUNTING HOLE THREAD                RIGHT-HAND                                       

DIRECTION                                                                                

MOUNTING STYLE                          BRACKET MTD W/THREE MTG HOLES, TOP HOLE THREADED 

KEYWAY LENGTH                           0.625 INCHES NOMINAL                              

SUBMERSIBILITY                          NONSUBMERSIBLE                                   

SHAFT ROTATION DIRECTION         COUNTERCLOCKWISE                                 

DISTANCE FROM END TO KEYWAY    0.891 INCHES NOMINAL                              

CENTER                                                                                   

THREAD DIAMETER                         0.669 INCHES NOMINAL                             

GROUND POLARITY TYPE                 NEGATIVE OR POSITIVE                             

ARMATURE MINIMUM SPEED IN       1560                                             

RPM AT FULL CURRENT OUTPUT                                                               

III MAXIMUM OUTPUT CURRENT       20.0                                             

RATING IN AMPS                                                                           

GROUNDING METHOD                      EXTERNAL                                         

SHAFT DRIVE END STYLE                 STRAIGHT SHAFT END, THREADED, W/KEYWAY           

DISTANCE BETWEEN SHAFT             3.062 INCHES NOMINAL                             

CENTER AND BOTTOM MOUNTING                                                               

HOLE CENTER                                                                              

DISTANCE BETWEEN SHAFT                  3.062 INCHES NOMINAL                             

CENTER AND TOP MOUNTING                                                                   

HOLE CENTER                                                                              

ANGULAR DEVIATION OF FIRST              193.0                                            

HOLE FROM TOP CENTER IN DEG                                                               

ANGULAR DEVIATION OF SECOND          164.0                                            

HOLE FROM FIRST HOLE IN DEG                                                              

DISTANCE BETWEEN INSIDE                 7.118 INCHES MINIMUM AND 7.136 INCHES MAXIMUM    

SURFACES OF HINGE BRACKET                                                                

DISTANCE BETWEEN OUTSIDE                7.818 INCHES MINIMUM AND 7.936 INCHES MAXIMUM    

SURFACES OF HINGE BRACKET                                                                

BOTTOM MOUNTING HOLE                    0.316 INCHES MINIMUM AND 0.324 INCHES MAXIMUM    

DIAMETER                                                                                 

THREAD SERIES                                   UNS                                              

MOUNTING HOLE THREAD SERIES          UNC                                              

DESIGNATOR                                                                                

MOUNTING HOLE THREAD                    0.312 INCHES NOMINAL                             

DIAMETER                                                                                 

MOUNTING HOLE THREAD                    18                                                

QUANTITY PER INCH                                                                        

MOUNTING HOLE THREAD CLASS           2B                                               

THREAD QUANTITY PER INCH                20                                               

VOLTAGE IN VOLTS                              12.0                                             

DESIGN CONTROL REFERENCE              1102980                                          

THE MANUFACTURERS DATA                  1LW55                                            

MANUFACTURERS CODE                                                                       

III FSC APPLICATION DATA                ENGINE ELECTRICAL SYSTEM,NONAIRCRAFT

 

NEW GOV SURPLUS