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Disassemblv (Mechanical Type)
Testing   (Mechanical   Type).

TM-9-6115-464-34 Generator Set Diesel Engine Driven Tactical Skid Mtd 15 Kw 3 Phase 4 Wire 120/208 and 240/416 Volts Manual
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ARMY TM 9-6115-464-34 AIR FORCE TO 35C2-3-445-2 NAVY  NAVFAC  P-8-624-34 (2)  Refasten  with  lockwire  after  readjustment. (h).  Assembly  (Mechancial  Type (1) Position body assembly (8, figure 3-15 sheet 2 ), to install retaining ring (9), packing (7), spacer (6), and counterweight (5). (2) Position cap and cover assembly (10), to install rotor assembly (4), washer (3), and Iockwire (2), and screw  (1). (3)  Install  lockwire  on  to  speed  switch. i. Test Equipment (Electronical Type).      The following test equipment will be required to properly test the speed s w i t c h . (1) Tachometer test stand or speed switch tester with 0.187 tach takeoff fitting, capable of operation up to  1225  rpm. (2)  24  Vdc  power  supply. (3)  VOM  suitable  for  measuring  continuity  and  24  volts  dc. (4)  Mating  connector  and  cable  for  MS3102R-18-1P  connector. j.  Testing  (Electronic  Type).  Refer to figure 3-16, sheet 1 for schematic diagram of pins to be used during test, and perform the following procedures. (1)  Screw  the  tachometer  fitting  onto  the  test  stand. (2) Attach the connector and cable to J37 of the speed switch. (3) Connect 24 volts dc to pins E, G and I with the polarity indicated in the test circuit. (4)  Using  the  VOM,  test  for  the  conditions  listed  below: Element No. 1: Pins A & B . . . . . . . . . . . continuity Pins A & C. . . . . . . . . . . open circuit Element No. 2: Pin D . . . . . . . . . . . . . . .   0 volts dc to ground Element No. 3: Pins F & J . . . . . . . . . . .   open  circuit Pin H . . . . . . . . . . . . . . .   24 volts dc to ground (5) Connect the VOM to read continuity between pins A and B. (6) Slowly bring up shaft speed of the tester. At 290 to 310 rpm Element No. 1 should trip causing an open circuit to appear between pins A and B. (7) After Element 1 has tripped, check with the VOM for continuity between pins A and C. (8) Proper tripping of Element No. 1 is indicated by meeting the conditions of steps (4), (6) and (7). (9) Connect the VOM to read voltage on pin D with respect to ground. (10) Slowly increase the tester shaft speed while monitoring the VOM. When Element No. 2 trips, the reading will go from 0 volts to 24 volts. Trip speed for Element No. 2 (50/60 Hz) is 590 to 610 rpm. Trip speed for Element No. 2 (400 Hz) is 825 to 850 rpm. (11) Continue increasing shaft speed while monitoring pin H for voltage. It should be at 24 volts, dropping to 0 volts when the third element trips. Trip speed for Element No. 3 is 1200 to 1225 rpm. 3-33







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