MORSE CONTROL PROBLEMS

[Compass790]

Originally Posted by RJMRJM

Hi TK and GILOW I have found the cause of the problem and you are correct the cause is not in the Morse control .Unfortunatly this 40 year old K H 18 KANZAKI gearbox it would appear has a problem which will sometimes cause it to just trip across the line into gear the culprit being the cam selector which is worn and i cannot find a replacement for it. I have now had the gearbox selector re aligned as best is possible so will nurse it along and will limit the refrig top up to when I am underway.

Can you post a photo of yr worn cam selector? It's possible to build up many metal items that are worn by various methods.
Also point towards worn part or if you are a photo editing guru put arrows on problem area.
Might help to suggest a repair method if we can see what we are looking at.
Not good that rebuilders didnt replace as it must have been clearly worn when they did it but that's water under the bridge now.

[skipperpete]

Originally Posted by Compass790

Can you post a photo of yr worn cam selector? It's possible to build up many metal items that are worn by various methods.

Also point towards worn part or if you are a photo editing guru put arrows on problem area.

Might help to suggest a repair method if we can see what we are looking at.

Not good that rebuilders didnt replace as it must have been clearly worn when they did it but that's water under the bridge now.

Hi Compass790
I repaired this same problem on a 3QM reduction gear and the selector yoke and collar was worn to a 3mm gap. The problem was no reverse and the fix was a second hand yoke and collar this is a poor photo but the wear ledge is visible. The yoke and slider are available as hurth parts but I didn't realize that until I got it apart and recognised all the familiar bits. I still don't quite understand how the wear occurred, initially thinking it was bad adjustment but having read the OP I suspect that something else might have caused light but constant contact between the two parts..... in his case it caused un commanded selection of drive.