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pvc

 
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jean
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Joined: Apr 13, 2025
Posts: 3

PostPosted: Thu Apr 24, 2025 5:05 am    Post subject: pvc Reply with quote

Hello,

I'm translating with Google, excuse my grammar... does anyone have a PVC valve wiring diagram, given that I don't have a mechanical fuel pump, but an electric one.
I also have a 24V autolite shielded ignition and an F134 Hurricane.
And I should point out that I'm a novice at mechanics.

Thanks,

J Louis Very Happy
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jimm
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Joined: Nov 01, 2011
Posts: 202
Location: Escondido, CA

PostPosted: Thu Apr 24, 2025 9:11 am    Post subject: Reply with quote

I think you mean "PCV" - Positive Crankcase Ventilation.

I don't know of any PCV valve that uses wiring, even on modern engines. They are purely mechanical. They are opened by manifold vacuum being high enough to overcome a spring in the valve. When that happens, oil-contaminated air is drawn from the engine (at a valve cover) into the manifold to be burned instead of escaping to the atmosphere. Clean replacement air comes from the air intake system after the air filter to another port on the engine, in this case on the oil filler tube.

Lots of information on PCV in this thread: http://www.willysmjeeps.com/v2/modules.php?name=Forums&file=viewtopic&p=54659
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1952 M38 son-father project
Slowly turning rusty parts into OD parts
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jean
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Joined: Apr 13, 2025
Posts: 3

PostPosted: Thu Apr 24, 2025 9:21 am    Post subject: Reply with quote

Thank you for your reply. Can I go directly from the PCV valve to my ignition and then back to the air filter?

j louis
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wesk
Site Administrator
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Joined: Apr 04, 2005
Posts: 16400
Location: Wisconsin

PostPosted: Thu Apr 24, 2025 11:05 am    Post subject: Reply with quote

Hello Jean and welcome to our web site. Just so we are all on the same subject, Jean is from Belgium. He is working on his CJ3B also known as a M606.

So your 3B has been converted to an electric fuel pump and you wish to know how to plumb your positive crankcase ventilation system without the vacuum source on the top side of your old mechanical fuel pump.
______________________________________________________________
Hallo Jean en welkom op onze website. Om ervoor te zorgen dat we het allemaal over hetzelfde hebben: Jean komt uit België. Hij werkt aan zijn CJ3B, ook wel bekend als een M606.

Je 3B is dus omgebouwd naar een elektrische brandstofpomp en je wilt weten hoe je je positieve carterventilatiesysteem $#^#$ aansluiten zonder de vacuümbron aan de bovenkant van je oude mechanische brandstofpomp.
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You must use an electrical wiring diagram for your new electric fuel pump but your PCV system plumbing is shown in a Plumbing diagram since it is not electrical operated.
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U moet een elektrisch schema gebruiken voor uw nieuwe elektrische brandstofpomp, maar de leidingen van uw PCV-systeem worden weergegeven in een schema, omdat het systeem niet elektrisch wordt aangestuurd.
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It will be difficult to accurately depict what plumbing arrangement your engine had originally as well as offer you help with a re-direction of your new plumbing system. What is needed is an accurate description and diagram of your original engine vacuum and positive crankcase ventilation system plumbing before your removal of the dual vacuum/fuel pump. It would also help to know if your CJ3B is really a military M606 and wether or not it has the military fording system installed. Is this what your old vacuum/fuel pump looked like?


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Het zal lastig zijn om nauwkeurig te beschrijven hoe uw motor oorspronkelijk was aangesloten en u te helpen met het aanpassen van uw nieuwe leidingsysteem. Wat u nodig heeft, is een nauwkeurige beschrijving en schema van de leidingen van uw originele motorvacuüm- en carterventilatiesysteem voordat u de dubbele vacuüm-/brandstofpomp verwijdert. Het is ook handig om te weten of uw CJ3B daadwerkelijk een militaire M606 is en of er een militair Fording-systeem op is geïnstalleerd. Ziet uw oude vacuüm-/brandstofpomp er zo uit?


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45 MB, 51 M38, 54 M37, 66 M101A1, 60 CJ5, 76 DJ5D, 47Bantam T3-C & 5? M100

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jean
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Joined: Apr 13, 2025
Posts: 3

PostPosted: Thu Apr 24, 2025 11:26 am    Post subject: Reply with quote

Hello,
Thanks for the reply. It was indeed this pump that was removed, and the hole was plugged with a plate.
I'll put it back in place as soon as I've repaired it. But in the meantime, my CJ runs with an electric pump.
I have a Solex YS carburetor, and the engine does have a fording valve.

J. Louis
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