Reply to "MTH Restoration Big Boy Issue or not?"

jini5OGR Forum Member SUPPORTING MEMBER

@GGG posted:
Some engines are more finicky than others especially with dirty wheels and such. Engine and tender wheel are isolated on one side. Normal PS-2 would have both sides of engine and tender providing AC ground. Pickup rollers from engine for center rail.
When you get to PS-2 or 3 with 3-2 rail, you loose the engine ground wire and you only get half the tender wheel. Engine only provides ground via metal drawbar, or that drawbar pin on plastic drawbars. The tender switch will connect both sides of tender wheels together if switch works correctly and is not damaged. G

So with the tender 2/3 rail switch in 3 rail, will I read continuity between both wheels on an axle? If not, how do I confirm the switch is defective?

6/11/227:36 AM

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