2015 Volvo new leveling valve, new problem

86scotty · Feb 17, 2022

Crazy. Most of this happened this week while I was out of town. I called my mechanic today to tell him about and he said they have had lots of these Barksdale valves that are bad brand new. He's going to swap it for me.

kranky1 · Feb 21, 2022

86scotty said: ↑

This is a 2015 Volvo. My leveling valve died last week, leak in diaphragm. It only lasted 920k so I'm ok with it. Replaced with Barksdale valve, pretty similar, which was the dealer replacement part. Fittings were laid out different but I got everything in the right place.

When installed, new valve had truck perfectly level sitting where my mechanic told me it should.

Grabbed a 25k load right by the house and truck rode fine that day. Next day grabbed a 40k load and ran another 500 miles, no problems.

Delivered load and today ran a light short load with some empty deadhead between and noticed this problem. When bobtailing or pulling empty trailer airbag pressure will slowly rise until the ride is rock hard, jar your fillings out hard. I can get out and look at bags and they look like they are about to blow. My truck has a digital psi gauge in the menu on the dash. Bobtailing when things are level and riding well it's always at like 10 psi, empty trailer about 15 psi and I've learned to get pretty close on my drives weight using this gauge. If I've got a 40k load it's up around 50 psi but right now it's creeping up to 30 PSI without any load at all.

I have to manually dump the bags now and then but it will slowly creep back up. Doesn't seem to be happening with some weight on the trailer.

tomorrow I've got a 10k load for a few hundred miles and will see how it does but what's going on?

Weird thing is looking around online I found some Youtube comments on a Volvo leveling valve replacement video and some people have had this same problem but no answers there, just several people describing same problem looking for an answer.
Click to expand...

Check to make sure the length of the arm on the levelling valve you put on is the same as the one you took off. May have to swap the arm off the old valve onto the new one. Had that problem with a trailer valve before.

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