technodrive TMC 60 M GEARBOX PROBLEM

[Antoninus]

  5I'm currently cruising the K&A when without warning or any noise I have lost reverse gear.

I have searched technical manuals and have deduced that it is a conical clutch system.

I have disconnected my drive cable and tested it for movement. The cable operates freely.

I carried out the following check with the cable disconnected.

With the engine running I operated the gearbox lever by hand. It engages fwd drive ok, however on full movement into reverse the propshaft is barely turning. 

Is there any adjustment I can carry out which would enable reverse to engage correctly without affecting fwd drive?

Any advice and help would be grately received

[dor]

It is a crap gearbox.  I changed mine for a PRM150; a world of difference!
Sorry, that doesn’t help your situation much.

[Tracy D'arth]

Gearbox duff reverse cone clutch, your tests are correct and prove it. You checked the oil?

Better to bite the bullet and replace with a PRM, preferably a 150 hydraulic, then you need an oil cooler plumbed into the cooling system, but a PRM120 mechanical will do you well.