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Emergency bypass kit for Haldex air dryer

June 05, 2015, 11:35:39 am

Does anyone know the size of the plug needed for the control line on the Haldex dryer on the '01 U320? The nut is 9/16", so I'm guessing a 3/8" plug would fit. I could disconnect it, but am reluctant to do that and possibly cause a leak.

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Re: Emergency bypass kit for Haldex air dryer

Reply #1 – June 05, 2015, 01:10:21 pm

Don't know for sure, but the plugs are fairly inexpensive.  I bought a selection of all the common sizes (2 of each) from 3/8" to 1-5/16" for less than $20.  Used them for my air dryer and hydraulic pump projects.  They are very handy for working on both systems.

You could add a couple smaller sizes to the selection below, and be covered for every eventuality.

PNTX - 03CP - Plug - 37° Flare - Male JIC | Industrial Supply

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Re: Emergency bypass kit for Haldex air dryer

Reply #2 – June 05, 2015, 02:17:55 pm

Does this help?

Air Dryer Bypass Demo

Keith

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Re: Emergency bypass kit for Haldex air dryer

Reply #3 – June 06, 2015, 08:20:53 pm

Thanks Chuck. Being a fulltimer I was trying to not carry anymore stuff than I have to. I guess I'll make room for a complete set of JIC plugs.

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Re: Emergency bypass kit for Haldex air dryer

Reply #4 – June 06, 2015, 09:07:44 pm

  I don't know if your 2001 U320 is the same as my 2003 but the plug that fits mine is 1/4" JIC,  # 2408-4
  Here are 2 pictures from when I replaced the air dryer a couple of weeks ago.
  While I had it out, I used the Emergency by-pass fittings to make sure it all fit.
    Hope that helps--Jim

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