No air pressure in secondary tank

You aggravate me.

There should be a double valve between your dry tank and your wet tank. There are two tanks for air on your truck.

Get a hammer and tap that #### thing. Drain ALL tanks.

Crank and build air to pressure governor again.

If your sec fails to build. Look at your air dryer. Now this is where I get fuzzy. Im not inclined to try to diagnose the #### thing here at home....

 

Try calling the local shaker dealer or wrench and ask if they can suggest where to look. I'm thinking it goes from compressor to splitter, to air tanks. So you have some small piece of debris in the line at one of those points, or bad valve at the entrance to the tank, or just inside the tank.

If you can get the line loose just before the tank, and there is a good air flow, you've isolated problem.

 

Yes, follow the compressor Line to the spitter. That line should be warm because compressor is working right? You are building air. That splitter is the problem.

If it aint and you cannot fill like Dave said at the tanks your dryer will be the problem. You COULD think about isolating the dryer and splicing straight through but by OKC you are going to be either heaven, Hell or Freightliner FOR SURE. Once moister gets into your tanks, they travel to your brake chambers then begin to eat through the rubber dividing your service actuators and spring chambers.

 

You can bypass the dryer and drain the tanks, that wouldn't explain the secondary not building. Get it into a shop before your on the side of the road without any air.

 

Secondary spitting water.

Your dryer is no good.

Drain your secondary all the way down, over night until it stops dripping. Your Primary too. Leave the tanks OPEN all night. Sit there. get some sleep.

Come morning maybe you can take your air dryer out of the equation and connect straight through and I bet you will have to go to dealer to clear the moisture from all 10 of your brake chambers soon. Like tomorrow.

Im very reluctant to let you run that rig. You don't maybe understand just how... dangerous to have fluid spitting and so on out of that sec tank. That is your dry Im betting. If so. Then your whole trailer is fluided, your tractor is probably too. Not to mention a rusted splitter shut probably.

Im banging my head on the frame trying to come up with something else. Maybe Isolate the secondary and just go with the primary remembring you have springs that will stop you and driving like you are gonna dynamite at any time.

And the Law is firm. No secondary air, No driving. Period.

 

Hes got air. If need be take apart two bic pens, draw boot laces, slit one rubber air line from compressure around the dryer and ram the tube of the empty bic and shoe lace both ends. He WILL get air.

Now that splitter is a problem. I cannot recall if the splitter from the compressor divides into two via a double action valve with a divider in the middle equalzing the pressure you could try to worm a notebook spiral into it to force that valve open, but that means draining everything then wrenching that T fitting loose. And the problem lies further downstream from the splitter to both dry and wet.

My problem is I don't know if the air dryer is split for each tank or it drys all of it and further sends both to both tanks. Im not mcgyver but if I have to I can nurse a truck or computer along a little bit. Outrageously non DOT legal but I can do it. I just need to look it over and think.

 

Maybe a control line is cracked at a fitting, there plastic junk