Seeking a parts diagram or other repair information for a Bachmann 4/6/2 older steam engine.  I think it is Spectrum K2?? The internal engine has a right and a left stde and seems to be split in two.

I am trying to get a diagram or other details about my Bachmann Engine The engine is like a Spectrum K4 4-6-2 but has a split internal body and is not the same as the other 4-6-2 diagrams on the Bachmann site .Is there a diagram for the earlier 4-6-2?  How abuot a parts list. thank you, Paul