VW Automatic Register

Technical forum => Technical => Topic started by: kipa on 11 August 2009, 13:45

Title: Oil drip
Post by: kipa on 11 August 2009, 13:45
Not really an AS question,
but what causes oil to drip out the pipe that runs down from the filler
past the dipstick and ends near the bottom right of engine?
Title: Re: Oil drip
Post by: Bookwus on 11 August 2009, 18:18
Hiya kipa,

That tube (properly called the road draft tube) vents the crankcase.  If you trace it back up you'll see that it's connected to the oil fill assembly.  When the engine is operating it will generate some internal air pressure.  That air pressure has to have a place to go and the road draft tube provides that outlet.  In the process of of ventilating the crankcase a small amount of oil vapor is also "drafted".  So, a small amount of oil does get lost in this set-up.  Perfectly normal.
Title: Re: Oil drip
Post by: 68autobug on 12 August 2009, 15:23

The front crankshaft pulley isn't sealed either..
it has an oil slinger which keeps most oil in the engine.
but a mist of oil can cover the engine bay
after many years...

If that hose and the one going up to the air cleaner
are blocked oil will come out the dipstick and from around the pulley...
and go everywhere....

[it did on mine.... lol ]

LEE

Title: Re: Oil drip
Post by: kipa on 13 August 2009, 03:23
I was wandering about a block of some sort somewhere.
Chers guys
Title: Re: Oil drip
Post by: Bookwus on 13 August 2009, 04:24
Hiya kipa,

A blockage of sorts would be unlikely.

As mentioned before a small amount of oil from the road draft tube is to be expected.  How much are you noticing?
Title: Re: Oil drip
Post by: kipa on 13 August 2009, 21:02
it just seems to be a more since the oil change,didnt notice a drip from there before.
maybe due to thinner oil its got 15/40 in it now.
I dont think I've got a block but it good to know what one might cause.
Title: Re: Oil drip
Post by: kipa on 13 August 2009, 21:08
One other thing
I'm off to get some 12mm vacuum hosing this weekend.
is there anything I should do while the hoses are off?
Title: Re: Oil drip
Post by: Bookwus on 13 August 2009, 22:06
Hiya kipa,

Best of luck in finding that 12 mm reinforced vacuum hose.  It is hard to come by.  A hydraulics shop may be able to provide you with a suitable substitute.

While you have the vacuum hosing off............a couple of suggestions:

Pull off your clutch servo and check out the condition of the servo diaphragm.  This is the weak spot in the vacuum system.  And this would be a good time to pull the air filter on the control valve and clean it out.
Title: Re: Oil drip
Post by: 68autobug on 18 August 2009, 17:17

I originally used some black hose bought from a hydraulic hose supplier
its still OK although I have bought some red Hose which is very stiff
and is rated at 300 PSI... I have found out that this is actually AIR Hose
for trucks etc.. it takes good quality hose clamps to seal it...

I have been using it for oil hose , with the different remote oil coolers
I have been using...  I have had leakage problems with it..
as I haven't tightened the hose clamps up tight enough...
and they were usually in a non accessable spot...
I did happen to undo a hose clamp a few days ago,
turn it around so I could tighten it easier...

I haven't checked to see if its still leaking...
but the oil level is still fine...

LEE
Title: Re: Oil drip
Post by: kipa on 19 August 2009, 11:03
Was at the hydraulic shop today
He said to try some gates air brake hose
the specs sound ok oil, fuel and kink resistant
It is reasonable firm too.
the other piece I was eyeing up was an water/air hose designed for sand/water blasters
which was bit thicker and firmer with warp around the outside but no oil/fuel rating not really designed for automotive stuff.
Also looks like New Zealand dont have 12mm hose so I had to go with 1/2 inch,(is that what you guys used?)
Title: Re: Oil drip
Post by: volkenstein on 19 August 2009, 13:05
Kipa,
      The ID of hydraulic hose varies. 1/2" brake booster hose *can* be used but clamp it really well, and I reckon it would be a job to get it to the clutch servo.
They don't stock it (the 12mm wire re-inforced) in Aus either.
I ordered from the US. BMW's uses the same hosing, but $$$'s by comparison. Ask for a price on Part No 34331115926 .
Type 2 Bay Window Kombi's use 12mm ID reinforced hose. See what a VW shop has in stock for Kombi's? Dunno the Part No.

I'll measure the OD/ID of the spare length of hydraulic hose I have.

Regards
Sean
Title: Re: Oil drip
Post by: 68autobug on 19 August 2009, 16:33
Quote from: volkenstein on 19 August 2009, 13:05
Kipa,
      The ID of hydraulic hose varies. 1/2" brake booster hose *can* be used but clamp it really well, and I reckon it would be a job to get it to the clutch servo.
They don't stock it (the 12mm wire re-inforced) in Aus either.
I'll measure the OD/ID of the spare length of hydraulic hose I have.
Regards
Sean

You can get all sorts of Hydraulic hose -different thicknesses... steel reinforced - single or double steel braided
they would have different pressure ratings too..
but steel reinforced hose wouldn't be able to be clamped using hose clamps...
You would need to use fittings like Earl's..  [inside threaded to bite into hose]
which are also very expensive.. these fittings are also available for hydraulic hose too..

the red AIR hose I have used comes in 12mm or 12.7mm ID.. 300PSI or higher ??

although I did use non steel reinforced hydraulic hose for the ATF pressure line
and used two good quality hose clamps which have never leaked..
hose clamps may have been NORMA brand... which i like..

so You may find some NON steel reinforced hydraulic hose which You could use hose clamps on..

and I agree with You Sean on the Red Air Hose..
its Not really flexible..  its just that the old hose wasn't long enough to go to the vacuum pipe on the new inlet manifold..
its very smooth on the inside too...
so using hydraulic hose would probably be best...  even the fibre reinforced one would do the job..
I haven't seen any metric hydraulic hose about...1/4- 5/16 - 3/8 -  1/2     is common       

cheers

LEE


Title: Re: Oil drip
Post by: Bookwus on 19 August 2009, 19:41
Hiya kipa,

Quote from: kipa on 19 August 2009, 11:03 ......Also looks like New Zealand dont have 12mm hose so I had to go with 1/2 inch,(is that what you guys used?)

The OEM hose was a braided wire reinforced 12 mm German product.  71 and newer Busses use the exact same hose for their brake booster vacuum.  This hose is very hard to find.  The only source I know of is BelMetric in Massachussets, USA.  I ordered a bunch of this stuff a couple of months ago and do have it on hand, if you are interested in going that route.

Otherwise, you'll need to go with a 1/2 inch hydraulic type hose.  I'd suggest that you get a hose that will be resistant to oil, gas, chemicals, etc even though the hose itself will not carry any corrosive substances.  Then you'll be sure that the hose will stand up to the "climate" in the engine compartment.  Basically, that's the route I went when I first got my car back on the road.  And the hydraulic substitute worked fine. 
Title: Re: Oil drip
Post by: Airhead on 19 August 2009, 21:13
The RH12W is exactly the same as supplied by Mercedes Benz garages its their part number 0004352182 I know because Ralph told me  ;D

Airhead
Title: Re: Oil drip
Post by: Bookwus on 19 August 2009, 23:15
Hiya Air,

Ohhhhh.................I'm gonna have to check that out.

Who's Ralph?
Title: Re: Oil drip
Post by: volkenstein on 20 August 2009, 01:10
Mike,
      Ralph Lomando at Belmetric I'd guess. That was the fella I dealt with. Merc's too eh? I'll file that one away for future!

Regards
Sean
Title: Re: Oil drip
Post by: Airhead on 20 August 2009, 17:14
Quote from: Bookwus on 19 August 2009, 23:15
Hiya Air,

Ohhhhh.................I'm gonna have to check that out.

Who's Ralph?

Hes the guy who owns Belmetric it would be cheaper for me here in the UK to buy from my local Mercedes dealer than to import say 7 metres from the US dont know how expensive the Mercedes dealers would be in other countries though.

Airhead
Title: Re: Oil drip
Post by: Bookwus on 20 August 2009, 18:19
Hiya Air,

Quote from: Airhead on 20 August 2009, 17:14 .....Hes the guy who owns Belmetric it would be cheaper for me here in the UK to buy from my local Mercedes dealer than to import say 7 metres from the US dont know how expensive the Mercedes dealers would be in other countries though.

Thanks to you and Sean for clearing that up.

Have you checked out the Mercedes dealers?  I'd agree that shipping would be expensive.

But I'm thinking that 7 metres of that stuff is way excessive.  It takes about 5 feet of 12mm vacuum hosing for a Bug.  That's less than 2 metres.  I'm not exactly conversant with the vacuum hose routing on a KG, but it has to be less than 7 metres (that's about what I have on hand right now - about 22 feet total in various lengths).  If you order in quantity (my last order was for 15 metres) you find a couple of interesting things.  BelMetric purchases this hosing from the manufacturer in 5 meter lengths.  When it's purchsed that way the 5 meter lengths come labeled as brake booster hose.
Title: Re: Oil drip - Hydraulic hose.. vacuum hose...
Post by: 68autobug on 20 August 2009, 18:41

Can You compress the steel reinforced hydraulic hose with Hose clamps..??

I have found more engine oil leaks where I used that RED Air Hose...
its behind the fan shroud and very difficult to find the hose clamps...
tightened two today...

Fingers crossed it won't still be leaking.... lol

I'm hoping its My fault for Not tightening the hose clamps...

its working OK for the vacuum at the moment... the 12.7mm stuff...

I know it will never suck in... lol

cheers

LEE
Title: Re: Oil drip
Post by: Airhead on 20 August 2009, 18:51
Quote from: Bookwus on 20 August 2009, 18:19
Hiya Air,

Quote from: Airhead on 20 August 2009, 17:14 .....Hes the guy who owns Belmetric it would be cheaper for me here in the UK to buy from my local Mercedes dealer than to import say 7 metres from the US dont know how expensive the Mercedes dealers would be in other countries though.

.  When it's purchsed that way the 5 meter lengths come labeled as brake booster hose.

Mike

Thats what Mercedes Benz call it brake booster hose, it comes from Germany under the MB part number, I just over guesstimated at 7m for my KG but by the time I have added tax duty and delivery from the US its expensive for me, I think the MB dealer charges £10 per metre which still isnt cheap.

Steve
Title: Re: Oil drip
Post by: Bookwus on 20 August 2009, 19:06
Hiya Steve,

I just did a little converting and number crunching and................actually 10 quid a metre is not a bad price at all.

BelMetric sells the hose for just a tad over $7.00US a foot; about $22.00 a metre.

Your 10 quid a metre is equivalent to $16.50US a metre. 

So, if your local Mercedes dealer is selling at 10Q you are getting a darn good deal.

All of which reminds me that I'll have to check out the prices at my local Mercedes dealership.
Title: Re: Oil drip
Post by: kipa on 21 August 2009, 00:05
I've clamped on the Gates 'Air Brake' hose and seems to work fine.
It must be similar to the MB Brake Booster hose
And at $10nzd for 1.3m I'm complaining either way
Got a friend who worked at Merc dealer here so I'll see if they got that hose and how much
chers for everyone getting involved it makes it a lot easier
Title: Re: Oil drip
Post by: volkenstein on 21 August 2009, 01:10
Kipa,
     The hose that the shop sold me is actually "Speedflow 1/2In Fuel Hose". It is slimmer in OD than 1/2 Brake booster hose but is a "dual layer" type hose - Inner/braid/outer. I'm only using it from my intake manifold to CV at the moment. The PO put 1/2 in brake booster hose on the CV to vac can connection.

All waiting patiently for the Belmetric hose I have to be fitted...another roundtuit on the wall ;D .


Regards
Sean
Title: Re: Oil drip
Post by: 68autobug on 21 August 2009, 16:33
Quote from: kipa on 21 August 2009, 00:05
I've clamped on the Gates 'Air Brake' hose and seems to work fine.
It must be similar to the MB Brake Booster hose
And at $10nzd for 1.3m I'm complaining either way
Got a friend who worked at Merc dealer here so I'll see if they got that hose and how much
chers for everyone getting involved it makes it a lot easier


The red Air Hose i bought which is NON Rubber...
isn't too expensive... cannot remember how much..
but it will last forever if it stops leaking.. [lol]

I would think that 1/2 inch hydraulic hose would be much more expensive than that..

Most of the Hose i have looked at would work apart from 1/2 inch heater hose..
which is very cheap and nasty... the one I have is anyway...
maybe a Gates brand would also be OK...
so long as they have some good reinforcements...

I would think that Only the best hose would be used even for heater hose..[water/coolant]

cheers

LEE
Title: Re: Oil drip
Post by: kipa on 21 August 2009, 20:43
Small typo
I meant I'm not complaining at that price at $10nzd for 1.3m'.
Title: Re: Oil drip
Post by: Bookwus on 21 August 2009, 20:59
Hiya All,

I went checking out the hose buy at Mercedes Benz.

As reported by Steve (Airhead), it's all true.  Available at your local Mercedes Benz dealer, part number 0004852182.

The cost at my local dealer was $24US per meter.  That is more expensive than BelMetric (about $21 per meter) but when shipping is figured into the cost from BelMetric, MB is the cheaper alternative.

Additionally, you can put your hands on the goods a bit faster with MB.  While the dealers generally do not carry this hose in stock they can order it from their regional warehouse and have it on the counter in about one day.  BelMetric shipping on the other hand takes about a week domestically here in the States.
Title: Re: Oil drip
Post by: 68autobug on 22 August 2009, 15:56
Quote from: volkenstein on 21 August 2009, 01:10
Kipa,
     The hose that the shop sold me is actually "Speedflow 1/2In Fuel Hose". It is slimmer in OD than 1/2 Brake booster hose but is a "dual layer" type hose - Inner/braid/outer. I'm only using it from my intake manifold to CV at the moment. The PO put 1/2 in brake booster hose on the CV to vac can connection.

All waiting patiently for the Belmetric hose I have to be fitted...another roundtuit on the wall ;D .


Regards
Sean

that sounds like it will do the job Sean..
Inner and outer layers...
Brake booster hose, isn't that vacuum Hose????

LEE

Title: Re: Oil drip
Post by: Bookwus on 22 August 2009, 18:59
Hiya Lee,

Quote from: 68autobug on 22 August 2009, 15:56

Brake booster hose, isn't that vacuum Hose????


Indeed it is!  When I ordered a large lot of RH12W from BelMetric the 5 meter rolls came with a sticker that read "Brake Booster Hose".
Title: Re: Oil drip
Post by: Airhead on 23 August 2009, 19:20
Quote from: Bookwus on 21 August 2009, 20:59
Hiya All,

I went checking out the hose buy at Mercedes Benz.

As reported by Chris, it's all true.  Available at your local Mercedes Benz dealer, part number 0004852182.

The cost at my local dealer was $24US per meter.  That is more expensive than BelMetric (about $21 per meter) but when shipping is figured into the cost from BelMetric, MB is the cheaper alternative.

Additionally, you can put your hands on the goods a bit faster with MB.  While the dealers generally do not carry this hose in stock they can order it from their regional warehouse and have it on the counter in about one day.  BelMetric shipping on the other hand takes about a week domestically here in the States.

Hi Mike

Ive put a post in the 'parts' section for future reference, BTW its Steve (not Chris, though I often get called that  ??? ???)
aka Airhead
Title: Re: Oil drip
Post by: Bookwus on 23 August 2009, 19:32
Hiya Steve,

Quote from: Airhead on 23 August 2009, 19:20 .........BTW its Steve (not Chris, though I often get called that  ??? ???)
aka Airhead

I knew that was wrong after I typed it in.  Dunno why I didn't go back and change it (but I will now!)

Hey Steve, what are the prices for the hose like at the Merc dealers over in GB?
Title: Re: Oil drip
Post by: Airhead on 23 August 2009, 19:48
Hi Mike

Ive been quoted £10 + VAT which makes it £11.50 per metre.

Steve