Clark 28000 series 4 speed

[Ky Logger]

Bought skidder with reverse out , put everything in transmission except the reverse clutch drum, still reverse just let's go , when I got machine it wouldn't move in reverse the clutches were burnt up, it will move in reverse now but when I put it in a strain in 2nd it will let go , it does it in 1st also but you can't tell it as bad,any ideas

[kiko]

You need to monitor the pressure when reverse slips out.  Did you replace the piston seals in the reverse clutch as well. If it has a factory transmission pump guage they didnot work well for diagnostics because they are orficed and don't show spikes and fluctuations well.  Must remove the orfice and tap in there