For the new guys, Winter is coming, Don't be a VICTIM!

[DVT873]

Don't forget the air dryer. FWIW you might want to take a look at what you need to bypass it. Servicing them helps but I have seen new and rebuilt one fail shortly after install. Any of them can have a check valve or unloader valve stick or freeze open. Then you can't build up air. Several decades ago the unloader ports were tapped so a pipe plug could be put in to get you home. Not anymore. I guess "they" felt that a proper repair would never get made. So when its dry and warm take a look at what you need, fittings, a piece of hose etc. Actually do it so it will all come apart nice if you have to do it. Some can't be bypassed as the governor is plumbed right in.