View single post by oztrainz
 Posted: Tue Nov 15th, 2016 05:12 pm
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Joined: Wed Apr 10th, 2013
Location: Unanderra, Australia
Posts: 1098
Hi Herb,
Not sure - I didn't get a chance to get a photo of the back of it but I suspect a shaft rubbing on the back set of road wheels transferring power to the back set of wheels either directly or through some type of a mechanical gearbox/transfer case or by hydraulics but only when the rail wheels are hydraulically lowered and locked. When the rail wheels are up this shaft is moved clear of the rubber road wheels and no power is able to transferred to the rail wheels in the "up" position.

John Garaty
Unanderra in oz
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