Fuel : expansion tank : breather pipes

Post by **jaylo264** » 06 Sep 2008, 09:30

There are two conflicting possibilities on the WIKI for the pipes which come out of the top of the under-arch expansion tanks -- my van is a 1986 DG-- one says they go into the chassis member and thus to air , another says they join together ("from one tank to the other ").
Can anyone clarify this for me please ?

ta , jaylo

Post by **dugcati** » 06 Sep 2008, 10:24

On my bus it is like this:-

[IMG:800:339]http://i62.photobucket.com/albums/h101/ ... eltank.jpg[/img]

.....but it is an Aircooled though...

Doug

Post by **jaylo264** » 06 Sep 2008, 18:32

thanks Doug , but i can`t tell from that diag whether they link together . Does anyone know ?
jaylo

Post by **robs5230** » 06 Sep 2008, 19:21

recently did this job on mine after smelling fuel . my van has a 1.9 dg w/c petrol lump and the pipes coming out of the top of the expansion tanks definitly just go to air and do not connect. rob

Post by **HarryMann** » 07 Sep 2008, 14:27

Does this help... ? Click to enlarge, 1986T2 2WD tank setup.

[img

806]https://club8090.co.uk/wiki/images/Fueltank1986T2.jpg[/img]

Post by **caveman** » 07 Sep 2008, 15:12

Be careful gas and diesel are different and even the gas ones are a little different as well. I just went through this [see my post on mystery vents] .On some [or all ] gas trucks the top vents of the breather bottles do connect together, where as diesel do not-they vent to outside. Check carefully in the Bentley, there are 3 different systems. This is not something you want to get wrong.

Post by **jaylo264** » 07 Sep 2008, 15:25

Thanks, Harry , but no-- i saw this already on the wiki , and if you care to look , the two wee funnel thingies marked " 17 " just hang in tha air, as t`were .

-- so why do the poipes have the boody funnel on ? ? .
The diag i like best is from Mocki in wiki, where the two pipes join with a tee and THEN hang free in the air !

I personally think the two exp tanks SHOULD be joined together , which is wot i shall do unless someone can convince me otherwise .............

caveman-- what do you call LPG ?

jaylo

Post by **HarryMann** » 07 Sep 2008, 15:32

True caveman...

That was for all 1986 as shown (no-variants), the lines leading to the engine are different for diesel/petrol of course and where those 'end-pieces' from the float-valves (14) terminate is the question?

This is the only other diagram that might elucidate any differences (for the 2.1 with emissions carbon cannister)

[img

775]https://club8090.co.uk/wiki/images/Fuelt ... filter.jpg[/img]

Post by **jaylo264** » 07 Sep 2008, 15:38

Ah HA ! but i don`t have the canister -- tho i see the point .
jaylo

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