Cormidi 6.60 weak track problem.

[AJ plant.]

I've got a Cormidi with low torque on the left track. Put it up on blocks and both tracks go perfectly and high speed engages but as soon as you put it back down off the blocks nothing from the left. will track strait but if you try to track right, using the left track, nought. it'll nudge abit but that's it. no guts at all.
This happened and I checked the hydraulic which did have water, now fully drained, cleaned and new in and same problem.
All other hydraulics work great as they should, just this one track, not over tensioned either, just konked like this one day.
Can someone help?! TIA!

 

[craig]

If no one else comes up with a possible fix/known fault, try swopping the hydraulic hoses side to side, see if the fault moves to the other side track.

 

[V8Druid]

the fact it will track straight OK makes me think the issue might be more to do with the control valve spool block

 

[Mick-the-fitter]

Show me pics of motors

 

[Mick-the-fitter]

the fact it will track straight OK makes me think the issue might be more to do with the control valve spool block

If you are tracking straight line, the left track will follow the right until comes up against a restriction! I’m going for internal damage in left hand motor