Need help with Gear Slipping on MTH SD24 with PS2

Well, if only one truck is failing you could easily make it a 1-motor loco. That is actually plenty of power for most layouts and trains.

Since you have done everything that I was going to suggest, it does seem that the main spur gear in the truck has "gone off-spec" on you (I am assuming that the helical gears on the axles all seem to be acting correctly, including intermediates) - in other words, it's worn out and you need a new one. It probably was not correct from the beginning and wore prematurely. Was the loco abused?

Anyway, try e-bay for trucks/used beater locos for parts/MTH parts department. As you have even tried different motors/worms, that sounds like the culprit.

If it comes to that, they can keep it a secret that it only has 1 motor; I won't tell.

Does this loco have traction tires? I have a MTH subway train that will spin like it not meshing but its the traction tire spinning. Need to clean and replace and put a drop of cement to set it in place.

franktrain 

What is the model #?

Actually dose not look like that much runtime on the loco, however I do not have a DCS system to verify that....

Its not the traction tires as If I hold a wheel on the truck by hand and than spin the motor by hand you can feel the gear hold that it slips........

Sorry I don't have a box so I don't have a model #........

The biggest problem I don't know how much money he wants to spend on this locomotive as he purchased an estate to re-sell the items....  I will look at the brass truck gears again and see if I missed something.....

Thanks

Mike,

Does this have the newer ("newer," since about 2008) 3/2 truck design with blind wheels on the center axle? I ask because I had one of those center wheel sets fail on an SD70 and prevent power from transferring to the drive wheels. The geared blind wheel started slipping on the axle. Or rather the axle turned, but the wheel didn't and so it didn't transfer any power through the truck's external gears to the drive wheels. Maybe that's your problem as well.

If its a 3/2 diesel and this is the problem, the fix is simple--if you can get the replacement wheel set without buying an entire set of six axles. MTH doesn't sell the wheel sets separately, even for repair. Fortunately for me, forum member Engineer Joe had a spare he kindly gave me. Good luck,

RM

old truck design, however I was going to look at the gear slipping on the axle