The description of these locos says "precision can motor". I was wondering if they come with a 5-pole motor. Thanks.

I've browsed through the 2011 Bachmann Catalog and seen Standard Pack numbers mentioned in many places. Can someone shed a light on these numbers for a noob such as myself? Thanks.

Would these couplers work in a BACHMANN HO GP50 NORFOLK SOUTHERN LOCO 61241? I need to replace a broken coupler, which I think it's a EZ Mate Mark (not II). Thanks.

Manual mentions that the train set needs to be lubricated every 24 hrs of operation, but doesn't say what exactly needs lubrication. I'm assuming the axles. Anything else? Thanks.

I'm a newbie and have seen that many locomotives are described using numbers sequences such as 2-6-6-2, for example. I believe it's something about the wheels, but don't know what exactly. Can someone teach me? Thanks.