Can't on the tractor as far as I know, had a similar issue on a 6910 turned out hydraulic brake valve was sticking a bit, but the brakes on the tractor where fine with or without trailer, it was just that the trailer brakes wouldn't come on
Trailer brake valve pressure isn't adjustable. The adjustment on the valve only adjusts the point at which the trailer brakes are applied when the pedal is depressed. The trailer should always respond first. If you have a problem get a gauge plugged on the brake coupler. It won't be as high as a spool valve pressure. Could be a coupler issue, or the valve itself
Im my experienced, faulty brake valve symptoms were trailer brakes not releasing, ie tractor not letting oil back when foot taken off, new valve , good as new. above advice about checking pressure would be worthwhile before spending £350.
The Cereals Event is to move online for the first time ever to support the industry during the Covid-19 pandemic.
Producers may not be able to physically visit the Cereals Event this year, but they won’t miss out on any of the content as all the key features will now be delivered in a virtual sense, says event director Alli McEntyre. “These are challenging times and while we are disappointed to have...