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Bachmann Crab Strip-down

2.7K views 4 replies 3 participants last post by  Wellington  
#1 ·
Please tell me how to strip down a Bachmann Crab for maintenance.

I need to remove the footplate as it is a bit bent on my model and I want to try straightening it. I have the manufacturer's diagram but it only helps so much.

I have removed the boiler/cab moulding.

The footplate is then loose at the rear but seems to be attached somehow to the cylinder moulding which I also can not see how to remove.

The boiler front plate also seems to be a hindrance to strip-down

Please how do I remove these parts without causing further damage?

Finally, if I do manage to remove the plastic part, could it be straightened by immersion in hot water, finger pressure, then fixing in new condition by running in cold water. This method was mentioned in a forum for war-craft modellers.

Dave
P.S. I have posted on another forum without success - hopefully you are a wiser crowd.
 
#2 ·
General guidance, because the Crab is not a body I have had apart. Check the footplate first, is it metal? (This is typical for Bach tender loco models introduced since the WD.) The usual construction is screw assembled, with plastic mouldings for the cab, the boiler and smokebox (can be two separate pieces) and cast metal weights and sometimes a cast metal backhead, screw attached and/or clipped to the metal footplate. Look for small crosshead screws on the underside of the footplate, and clips coming through the footplate. If the backhead is a separate metal piece it is sometimes used as a clamp to retain the boiler or cab mouldings. Basically loosen screws and disengage clips, then wiggle gently to see what is coming free...
 
#3 ·
*** Like the WD, the Crab body is a very tight fit - actually a stressful first "separation" as it seems to need so much force sometimes. The body fixing is clearly shown in the Bachmann assembly diagram though.

regards

Richard
 
#5 ·
Success
Image


I just had another go at taking the crab apart - and it should have been much easier.

What I think had happened was that the previous owner of the loco had spilt glue when fitting the front steps - that would explain the poor finish on one of the cylinders and why the cylinder was stuck to the running plate casting. The parts separated with a worrying crack when I forced an old kitchen knife between them. Thankfully though it was just unwanted adhesive cracking and nothing else.

It was a bit of a disappointing purchase really. Described as "Immaculate" on Ebay it certainly wasn't. However I got some of the cost refunded and now have a interesting project for detailing. It also runs really well despite being supplied in a quite filthy condition.

So now I have another problem which belongs in another more general thread.

Thanks again,
Dave