G scale Shay power replacement trucks

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Hello,
Last August I purchased a set of 1:20.3 scale Shay power trucks, item no. 88999 for my 2 truck Bachmann Shay
One of the power trucks is now not picking up power from the rails. I hesitate to open up the power block, didn't know if Bachmann suggests not doing this but feel it just must be a loose or disconnected wire inside. I'm hoping you have a suggestion.
Thanks for any thoughts.
Terry

[mickeykelley]

As I understand it, and personally experienced on my 2 truck, the plastic literally starts to fall apart, the springs inside overheat and collapse and start doing flaky things. If you want to separate the motor from the rails, it is much easier with the a metal replacements. Everyone seems to say replace and stop messing with the old. I'm taking their advise.

[Joe Zullo]

Forget what Mickey said above, since you clearly stated you already purchased the metal trucks last August.

• First clean the back of the wheels with a swab and alcohol.
• Look to see if the pickup rollers are all making contact with the wheels.
• Take the bottom plate off the offending truck and see what's up in there.

It isn't hard to diagnose pickup problems.