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I lost vacuum to the vent system in my truck Found the vacuum line coming off a tee underhood had snapped off at this grommet. I looked in HVAC book and don't see it. There are two hoses in that grommet. How to replace the one that is broke? Is that all one piece?
this is grommet this is the tee that had broken vacuum.
Do you have enough plastic line inside to poke it through the grommet a couple of inches? The reason I say on the inside, usually the plastic line is not brittle and rotten on the inside of the cab, only on the outside. If you can get a inch or two poking through the gromment, then just go to the store and buy some small rubber vacuum line that slips tightly over the old plastic line. Slip it over the inch or so line that you have sticking out, and then run it over and plug it in to the that tee fitting. If you think it might come off, you can use small wire ties like hose clamps and tighten the wire tie around the rubber line to help hold it on.
That Tee is more that a Tee it is also a check valve
I had the same thing happen to me but it broke inside the rubber so could not see it.
I pulled my hair out as I had vacuum on 1 side but not the other but the 2 lines were in place!
I made a hole and pushed a rubber vacuum line thru and hooked it to the good plastic line inside the truck like Gary said.
I felt any plastic line in the engine bay would get hard and break with the heat, rubber should last a long time.
IIRC I also passed a 3rd rubber line thru as I installed a heater core shut off valve and I had to pick up the supply from inside the truck.
If I had to do it again I would pull the assy. out cut the rubber large enough to pass thru 2 rubber vacuum lines to replace the plastic and have them hook to the plastic inside the truck like I did of the 2 line.
I say this because that rubber part was hard to push the rubber hose thru.
Once the lines were connected you could fill the rubber with black sealer to stop any air from blowing in thru and gaps.
Dave ----
That Tee is more that a Tee it is also a check valve
If I had to do it again I would pull the assy. out cut the rubber large enough to pass thru 2 rubber vacuum lines to replace the plastic and have them hook to the plastic inside the truck like I did of the 2 line.
I say this because that rubber part was hard to push the rubber hose thru.
Once the lines were connected you could fill the rubber with black sealer to stop any air from blowing in thru and gaps.
Dave ----
Thanks. I think I will just somehow rip out the existing plastic line in the grommet that will not move otherwise. Then make a hole to run rubber down into cab and connect to plastic. And seal somehow.
Thanks. I think I will just somehow rip out the existing plastic line in the grommet that will not move otherwise. Then make a hole to run rubber down into cab and connect to plastic. And seal somehow.
That what I did on mine and it was a bear to poke a hole thru that rubber plug.
Maybe you can cut it just below the lip that holds it in place to remove what is left of the 2 plastic hoses to end up with a round open center grommet?
The easy way is if you can find a new round grommet to fit the hole to run the rubber hose thru to connect to the plastic inside then black RTV to fill the void with it to seal it.
Dave ----
