Out of nowhere this week, my MTH GP35 developed a squeal from the rear truck. I lubed the axles and rollers three weeks ago and had been running fine. I re-lubed it again this week and did not help. I'm out of ideas, so thanks for any help!
- does it at and above 10 SMPH
- does it both with and without a train
- squeals on curved and straight sections
- only does it running forward
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Remove the chassis, remove the offending truck and check the grease. Also check to make sure the motor is securely mounted to the plate that secures it to the truck. If that's loose, the gear can slightly misalign.
Thank you, Matt! I removed the rollers and then ran it around - still squeaked. I then removed the shell and at first didn't see anything out of the ordinary. I took the motor screw out of the bottom of the truck and everything fell out over the place.
I had a hard time getting everything back into place. It looks like some wires were caught between the motor and truck then re-aligned everything. Ran it for over 30 minutes and no more noise.
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