Oil Breather Tower

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TONYT25T25
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Oil Breather Tower

Post by TONYT25T25 »

Is there any maintenance that needs to be done on this item or is it just a conduit without any filter inside, does the cap come off to reveal a filter or is it just a hollow plastic tube connected to a rubber hose which in my case connects to an intake on the Carb.
1984 Campervan 1.9DG Petrol WBX

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silverbullet
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Re: Oil Breather Tower

Post by silverbullet »

Non-serviceable part. there is a diaphragm and light spring up top, under conditions of high crankcase pressure (higher rpm's and loads) it allows blowby gases to enter the inlet air and be burned.
At small throttle/high vacuum it is clamped shut and keeps emissions down.
The diaphragms are often torn by now (if you unbolt it and take out the oil baffle it can be inspected) Get a new one if it has failed, JP make replacements and they are ok.
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TONYT25T25
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Re: Oil Breather Tower

Post by TONYT25T25 »

Thanks SB next on my list to do. Just to add how is it inspected what should I look for.
1984 Campervan 1.9DG Petrol WBX

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silverbullet
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Re: Oil Breather Tower

Post by silverbullet »

When the oil baffle is removed (it draws out, only fits one way) you'll see the preather pipe inside and the diaphragm above it.
It'll probably be all gungy in there, a wash out with solvent will give a better view. A tear should be obvious to see, assuming there's anything left if it at all!
85 syncro Caravelle twin slider Oettinger T3200E-6
90 SA Microbus supercharged wbx/UN1 project

http://www.025motorsport.com

TONYT25T25
Posts: 512
Joined: 16 Sep 2013, 17:19
80-90 Mem No: 13596
Location: Hampshire

Re: Oil Breather Tower

Post by TONYT25T25 »

Thanks again, the word Emissions alerted me, mine passed ok last MOT but always erring on the side of caution.
1984 Campervan 1.9DG Petrol WBX

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diabolov
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Re: Oil Breather Tower

Post by diabolov »

Imageif you look under the top rim there is a small breather hole that opens the top of the diaphragm to atmosphere, clean it out and you can use it to check if the diaphragm is sound.
 
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TONYT25T25
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Re: Oil Breather Tower

Post by TONYT25T25 »

Thanks I will have a go at that.
1984 Campervan 1.9DG Petrol WBX

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