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The easiest way to check a switch is to put digital VOM leads across the switch terminals. switch. Operate switch if any voltage observed, switch is bad. Do not use ohm meter to check switch. Check term 1 at card, upper left screw term. Pos. lead. Neg. lead at batt. neg. Key on. you should have 5 volt with smoothly decreasing voltage as you move control handle F/R. Terminal 5 or 6 should have voltage with F/R activated. Term 3-4 should be batt voltage. T2 SCR panel should have 1/2 batt. volt.
Steer switches under truck by steer wheel need to function properly. Not just click. they must work electrically. Wiring runs up under entry switch bracket and up to TB 2 at top of contactor panel.
fixitfast- if you turn steering and motor contactor pulls in and turn the other way you only have one motor running. Steer switch not working properly. Maybe damaged.
Check plugs at bottom of panel. Clean all connections with DeOxit contact cleaner. Remove Power fuses to check properly.
Don't forget PS steer switch is in the drive circuit. Brake sw. and power steering sw. are both needed to closed to travel.
  • Posted 8 Sep 2014 07:33
  • Modified 8 Sep 2014 07:49 by poster
  • By oldmanforklift
  • joined 12 Jun'05 - 25 messages
  • Arizona, United States

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