As per titel, I have a small problem with a very old set that I own. A 2670 which is the Swedish wooden D-101 lok (with 3 wooden wagons).

When placing the lok on the tracks, CS2 finds it and the lights work. But the lok will not move in any direction. Just have a hmmmmm'ing and brummmm'ing.

Any idea's of what can be faulty?

Thanks.

Patrik

Thank You. Kind of what I though ie glued up inside.... no problem, local shop does service so they can have a go

Hi,

I actually cleaned and serviced the locomotive of my 2670 set this morning, before I noticed this thread. Isoprypyl alcohol (90°) is very good at dissolving the sticky glue that the Märklin oil of the late 80s and early 90s often turned into when the locomotive was never used. I got a small bottle from the local pharmacy, just dipped a cotton earbud into it, and cleaned the motor shield inside, the rotor, the whole gearbox as well as the wheels. The sticky oil just vanishes, and then you use dry cotton buds to finish cleaning. Finally, I oiled the bearings of every axle, and now this wooden locomotive runs very smoothly. I just had to replace the coal and brush inside the motor, as they were dirty.

It's pretty easy to disassemble and reassemble the motor in this case, so cleaning a Swedish D/Da it is not too much of a hassle. The small plastic part that covers the screw on the roof can be loosened by turning it with your fingernails or using a toothpick; a screwdriver might easily scratch the roof.

Best regards,

Mark

Mark recommended Isopropanol. You are probably talking about Ethanol.
In my experience Isopropanol (Isopropyl Alcohol) is not dangerous for paint.

https://en.wikipedia.org/wiki/Isopropyl_alcohol

Thanks, Matt. I keep it away from the livery or any other paint, of course. When I tried it, it seemed to me that it's a very powerful solvent, so I only used it on the cogwheels and inside the motor. If the wheel flanges or the pickup shoe are really dirty, I use it there too. In case there's absolutely no sticky oil at all anywhere, I simply clean the locomotive with dry cotton buds. That's what I did with the old vintage models that I posted here in the last few weeks.

I got this tip from a very experienced member on a German forum who told me that this sticky Märklin oil from the 80s is easier to remove with alcohol than with petrol because that hardened oil has been oxidized. He said that if only part of it is removed, the remainder may cause fresh oil to be oxidized as well, so the problem will be back. The isopropyl alcohol dissolves it all within seconds, but I agree that it needs to be used very carefully.

Best regards,
Mark

I have used only very lightweight oil to fix my secondhand bought locos jammed gears after I have dismantled the motors. This way there is no risk to the paint. When this lightweight oil has been applied I carefully start to rotate the wheels/gears after a while and take some cotton buds to remove that old Märklin grease from the gears. I have done this kind of fix to at least 30 locos.