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Hey all,

I have an MTH Premier SD40-2 and it is making a squeaking/grinding sound for some reason. I lubricated and greased it, and ironically it only makes this noise in forward (not reverse). I'm not the best at taking the cab off so I figured I'd post here first. 

Thanks all!

~Steve B

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SD40-2 Squeaking
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You can check to see that motor mount screw under truck is not loose.  YOu can check side gears for damage.  After that cab off to check motor mount screws that hold motor mount to motor.  That requires motor out of truck.   Just generic recommendations as I can not hear the noise either from your video. G

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