Hi John

Here is the little I know about this traverser:
- the original Märklin motor is DC so there is little chance it would refuse to turn in one direction
- there are securities to prevent the motor continue turning while the end has been reached. This is achieved by diodes in the rail pitt of the transfer table
- when the motor is replaced or re-assembled in the TT, there is a risk of switching the motor poles (will turn in the wrong direction) this may cause the protection diodes to stop the motor going away from the extreme position. So the poles are important when re-assembling the motor in the bridge.
- there are many contacts that may be improperly in place

When facing the pit assembly with plugs in front, from left to right:
- leftmost is B1 : track stud power
- B2 : overhead catenary power
- 0 : track ground
- 1 : common AC prower (brown)
- 2 : rectified continuous power (pole change will cause the traverser to go to the other direction until the next track
- 3 : to go past the present track (must then be connected with "2"

To check the contacts, you need to remove the bridge from the pit.
This is done by pulling gently the two gears away from the toothed tracks (attention, they are fragile) and sliding the bridge to one extremity, so it will disengage (pop out) from the pit.

Possible causes of your problem: a permanent connection between 2 and 3 or bent contacts

User's manual https://static.maerklin....b154bd1c7d1570607011.pdf

I hope this helps
Cheers
Jean

Hi John
If the traverser is doing fine in one direction and not stopping in the other, this may have to do with the operating voltage or the motor speed.

Often DC motors have a different speed depending on the direction.
When travelling too fast, the traverser may go past the stop location (because of motor inertia) and resume its travel until the end.
One possible test is to power the traverser with the B output of a Märklin transformer (instead of the L output) with a medium speed and see what happens
Cheers
Jean

Good afternoon Jean,

Since our last communication I discovered that the circuit board in the controller has been damaged. One track appears to have overheated and disintegrated. It looks as if there was a liquid spill into the controller which was probably the cause of the track overheating and disintegration. When I have time I will do a repair and hopefully it will solve my problem.

Once again thank you for your suggestions.

John

Jean,

That does not appear to be the case with this controller because I have another non working controller and it did not have grease either. I might have a chance of getting another controller next weekend.

Have a good weekend.

John