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I’ve never installed anything internal on a Lionel locomotive - much less even disassembled one - but now I am about to install an ERR Cruise Commander M on my very heavy TMCC Virginian Allegheny. Given the mass and size of this beast what is the best and safest way to separate the body from the chassis? Is there some service manual available? I don’t want to risk damaging anything.

I’ve read the electronic installation manual for the CC-M but it only pertains to the wiring and board installation and not about accessing it. I’ve searched YouTube and this forum but so far I’ve not found a specific ‘How to…’ to do this?

Looking at the Allegheny Manual in the maintenance section it shows screw locations on the underside (but are there others?)  but what is the best way to remove them and then flip everything back over? For example, after the screws that are accessible underneath are removed should I attempt to lift the chassis off the shell inverted or should I gently flip everything back over together then lift the shell up and off? Are there any accessories that may still be attached (smoke unit etc?) or even wiring attached to the shell and cab area?

I have no idea on how to do this so I’m hoping the experts on here that have done this before can help me avoid any pitfalls.

Thanks in advance for any help and advice!

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Last edited by Raven87
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I believe that may be one with a harness looped over the crossmember for the front power truck.  I know some of them you have to take the front power truck off using that one screw and unplug one or two plugs to remove it.  Newer ones come apart intact.

Is there any way to verify this? I have never done a disassembly on a locomotive before and am worried I may screw something up because I do not know what it is that I don’t know - but should.

Last edited by Raven87

Since I don't currently have one of these to look at, I can't verify it.  I have repaired and upgraded a few of these over the years, and I didn't have any problem getting them apart.  I had one recently for a Super-Chuffer installation, and I don't remember any issues doing the upgrade.  However, not all of the articulated stuff comes apart exactly the same way, so there's sometimes a wrinkle or two.

Just had mine apart several times doing upgrades.  Yes, 4 screws to get the body off (2 at cab, 2 at first set of steam chests).  First though, I'd remove the front set of drivers (big flat head screw, then push down gently and slide towards rear of locomotive).  I don't recall about the front pilot, but those are generally one screw if you need to remove it.  I might be forgetting something, but it was much easier than I had thought it would be.  It was my first upgrade on a modern locomotive, so I had it apart a dozen times getting it to all work.  It does now though, and I'm quite pleased.

Yes, that is the screw to remove the front power truck.  It's also hooked inside so you'll have to slide it a bit to unhook it.  Also, the drive shaft coupling will slide off, to allow you to remove the truck.

How does the coupling reconnect during reassembly? Or is that done before the shell is reattached? I’ve never seen the inside of one of these so I’m not sure what to expect.

Last edited by Raven87
@Burl posted:

Just had mine apart several times doing upgrades.  Yes, 4 screws to get the body off (2 at cab, 2 at first set of steam chests).  First though, I'd remove the front set of drivers (big flat head screw, then push down gently and slide towards rear of locomotive).  I don't recall about the front pilot, but those are generally one screw if you need to remove it.  I might be forgetting something, but it was much easier than I had thought it would be.  It was my first upgrade on a modern locomotive, so I had it apart a dozen times getting it to all work.  It does now though, and I'm quite pleased.

Thank you.
How about reassembly? Gunrunner John mentioned the drive coupling sliding off etc., how hard is it to put the front truck back on? Is that done before the shell is put back on?

I have the C&O version of that engine. To disassemble:

  • Remove the large screw that connects the front engine to the rear engine.
  • Move the front engine rearward until you can unhook the L shaped hanger from the bracket inside the engine. Be careful not to loose the conical shaped washer and spring. Pull the front engine up and forward (this will disconnect the drive shaft) until you can see a connector with wires. Pull the connector apart and the front engine can be removed and set aside.
  • Remove the 2 screws in the cylinders on the rear engine. Remove the 2 screws at the front of the firebox. You should be able to remove the frame from the boiler now by pulling them apart. If they don't want to come apart you may need to use a flat bladed screwdriver to gently pry them apart at the firebox.
  • Once you can remove the boiler you will have to disconnect the wires going to the handrails (that's the antenna). Should be a yellow wire nut. Gently pull the cab light out of the backhead. I also think you have to pull apart the wire connector at the smoke unit as the smoke unit is mounted to the boiler.

Look out for other wires that may connect the frame to the boiler. It's been a while since I've had mine apart so I might have missed something. Take pictures as you take it apart so you if you don't remember how to put it back together, the pictures will help. Above all- take your time.

As articulated engines go this one is fairly simple to get apart. There aren't any wires for marker lights and number boards to contend with.

Ken

Thank you all! This is the most expensive locomotive that I have bought so far - and I’m probably overly cautious because it is now my favorite even though it’s not a Legacy - so I appreciate every bit of advice all of you have given me.

So, I was able to get the shell off easily enough and yes there was a connector to the front truck as you guys mentioned. I took a lot of pics (these are only some of them!) for reference but because I have the foam cradle I was able to lay the shell onto it without disconnecting any other wires yet. Should I disconnect everything from the shell?

A couple of items… 1) when I lifted the shell off the light for the cab light (maybe the firebox glow?) was already exposed as you can see in one of the pics just behind the motor. And 2) is there anything else I should disconnect (other than what is needed for the CC-M installation) that will make this easier?


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