TB-9-2350-368-25 Powerplant Test Stand M113A2 M113A3 M548A1 M548A3 Download
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TM 9-2350-368-25 5-3 NOTE • All checks should be made with suitable multimeter and powerplant test stand master switch in the on position. • Battery voltage can range from 22 to 26 volts without the engine running. 5-3. A3 WIRING HARNESS 1. Turn master switch on. Check four wire regulator harness at the end that connects to the regulator. You should get the following readings: Pin A Not used Pin B Circuit number 1 Battery voltage Pin C Circuit number 2 Battery voltage Pin D Circuit number 2A Battery voltage Pin E Circuit number 1A 0 volts Pin F Not used Pin G Not used 2. Turn master switch on. Check three wire regulator harness at the end that connects to the regulator. You should get the following readings: Pin A Circuit number 2A Battery voltage Pin B Not used Pin C Circuit number 2 Battery voltage Pin D Not used Pin E Not used Pin F Circuit number 1B 0 volts 3. Turn master switch on. Check accessory harness at the end. You should get the following readings: Pin A Not used Pin B Circuit number 1B 0 volts Pin C Circuit number 406 Battery voltage (with air box heater switch on.) Pin D Circuit number 34 Battery voltage Pin E Circuit number 33 14 volts Pin F Circuit number 1C Battery voltage Pin G Circuit number 327 Battery voltage Pin H Circuit number 74 Battery voltage Pin J Not used Pin K Circuit Number 406A 0 volts Pin L Not used Pin M Not used Pin N Not used Pin O Not used 4. Turn master switch on. Check starter harness at the end. You should get the following readings: Pin A Not used Pin B Circuit number 6A Battery voltage Pin C Not used Pin D Not used Pin E Circuit number 6 Battery voltage