Nh power beyond issue

[dave7840]

Having a problem with the power beyond on a new nh t7.225 and tanker. So we plug it in, start tractor oil flows were it should be, use any service on the tanker control box and it works but as soon you stop, the oil stops flowing through the block on the tanker, so the oils not returning and the feed is pressurised up. The only change with have made from the older tractor same model is we have gone from iso to flat face couplings. The dealer is saying its the tanker. What could be causing our problem because the tanker worked fine on the old tractor

 

[Lincsman]

Could be the couplings if they are not new.

 

[dave7840]

New couplings

 

[cosmagedon]

Check the load sence line, either disconnect it or close it off with a valve when the pressure line is still pressured up.

If the pressure drops off its the tanker at fault, if it stays then you have a problem with the tractor, possibly the compensator valve.