Oil extractor pump

Is your pump real brass or is it made of plastic material and a brass look a like?

The size of the flexible pipe (outside diameter) is dictated by the inside diameter of the rubber suction grommet at the base of your pump. This size will fit down the majority of dipstick tubes with space to spare. Many years ago I did have one of the pumps which which was brass, had a nut and olive on its suction end, which was meant to take a copper pipe.
 
Sorry I don't know the exact size, but it is a thinnish tube for the dipstick hole on my Volvo MD11C, probably about 1cm diameter, with a thicker tube for the outlet of the brass pump, about 1.5cm probably.
I find it a devil of a job to keep the tube attached to the outlet (thanks to the presence of slimy oil I suppose) even with the jubilee clip very tight, and the whole thing drips oil when not in use so I keep it inside 2-3 plastic bags, so watch out for drips and for the outlet tube coming off unexpectedly.
But it does work, although I would look at the Pela (not sure about the spelling) if I had to replace it.
Good luck.
Tim
 
As said, a Pela vacuum pump is the best answer around for cleanly extracting and disposing of engine oil. I use mine on the car as well for 6,000 mile changes.
 
I too use a simple brass pump, though my engine is Volvo, because it is small to stow. I am lucky in that the tube I use for sucking fits snugly into the outlet tube when stowed, so I just wipe it clean and put away in a plastic bag. The waste oil goes into an empty can which I usually discard.

If you run the engine warm before changing the oil, don't forget that the pump gets hot.
 
So happens that when I undo the dipstick tube from the side of the sump the remaining hole is the perfect size to accept, a BS 3746:1990 or SAE 100R2 AT / DIN20022 EN 853 2SN Tube. or to you and I, standard garden hose. ;)

Furthermore the hose fits perfectly inside the hose tail of the lovely brass pump I bought from a local garage sale for 2 quid.

Result.
 
You might find it easier to get a hose that fits on the outside of your dipstick tube, which is what I do having given up on finding a suitable pipe to fit inside my dipstick tube. As long as the joint is air tight it will work fine (a smear of grease helps). I don't even need a jubilee clip.
 
warrenmarkus1 said:
You might find it easier to get a hose that fits on the outside of your dipstick tube, which is what I do having given up on finding a suitable pipe to fit inside my dipstick tube. As long as the joint is air tight it will work fine (a smear of grease helps). I don't even need a jubilee clip.
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Fine if you only want to remove some of the oil - dip tubes do not generally go to the bottom of the sump. As for tube to suit - bowden cable outer sheath works well - available in halfords etc. :D
 
Parsifal - it wasn't me so don't feel guilty. I inherited this with the boat so I don't know it's useless yet as I haven't yet changed my oil despite having the boat for nearly 2 years. (Shock horror!) I know that a Pela would be better but I don't want to spend any more money as it's already cost me a fortune this year - in fact I reckon that each outing in her has cost about £400 this season although some of that was an insurance claim.
 
The Pela pump is brilliant on my Beta, because it gets out the half litre of used oil that the brass pump supplied with the engine leaves behind.
Better still the Pela is brilliant at getting wrong fuel out of petrol tanks, as my neighbour has two cars one petrol and one diesel, and has a job remembering which car takes which fuel!
 
I have the same engine and the brass pump which came with the boat has a thin copper tube attached I suspect it is only about 6 mm diameter it is fitted on with a nut and presumably an olive. On my previous boat I had a similar pump but it had a rubber grommet at the end which took a plastic tube of about 1cm outer diameter that fitted down the dipstick hole of my Yanmar YSB.

Why don't they fit sump plugs???????
 
ghostlymoron said:
I have one of these and it's a simple brass pump. Question is what size of tube do I need to poke down the dipstick tube on a Yanmar GM20?
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Would it be too simple an answer to suggest that you try the tube you have in your dipstick hole? I have owned a couple of these pumps and the tube that came with them fitted both my Bukh 20 and Yanmar 27 dipstick holes with no trouble. The problem with both of them was that after a couple of uses the valve in the bottom of the unit, a very cheap and simple rubber disc, curled up and would no longer seal. I bought a Pela.
 
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