Electrical Tachometer Indicator Subassembly

Features

Specifications

• End Application:
  J85-ge-21, 21a, and 21b turbojet engines
• Part Name Assigned By Controlling Agency:
  Generator, tachometer - alternator
• Reference Data And Literature:
  Mfg drawings 2cm11baa5 and 327b390
• Federal Supply Class (fsc):
  Engine instruments
• National Stock Number (nsn):
  6620-00-785-2251
• Special Features:
  Operating voltage at 1200 rpm generator 21 volts, alternator 28 volts and 5 volts; 3 phases generator, 3 and 2 phases alternator; 2 poles generator and 12 poles alternator; drive end receptacle ms33678-14s-6p, connector end ms33678r-12s-3p; 0562 in. Length of shaft from housing; flange mounting method; 4 unthreaded hole; 2.652 inches mounting facility circle diameter; self excited; 3 and 6 receptacle terminal type and qty; a15 single style single end; mechanically driven electromechanical unit; transmits electrical impulses to the tach indicator which shows rpm in percent