mk gear box trouble

[AK]

Ok here is the score, I run a 115ps 54 plate tranny luton, about 3 weeks ago it went into Ford for a gearbox repair under warranty.

The problem I have is it it went in due to whining in 5th gear, so at the same time I had a new clutch fitted (made sense) However 3 weeks after its whining again.

Am I right in thinking 5th gear is on its way out again? or am I to think maybe they didn't actually do the repairs they set out to do.

Obviously the truck is a work tool and I can;t afford for it to ne off the road.

What are my chances of getting Ford to replace the whole box instead of just trying to repair it poorly?

[Nighthawk]

The chances of getting them to replace a complete transmission is small

The repair must be considered uneconomical due to the cost, and sadly a repair to 5th isn't going to come close to that.

To get a repair near the cost of a exchange box, you'll need them to change the main shaft and 5th gear and and countershaft with new bearings to both shafts and 5th, or possibly a new casing due to a crack

Not an easy one.