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Thread: El cheapo coolant removal pump
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10th March 2012, 11:12 PM #1
El cheapo coolant removal pump
I have task ahead of me in changing the coolant in 5 x CL60B size lathes.
I can recall some enterprising chap on the web, made up a pump from an older vehicle oil pump.
The pump was simply driven by a corded electric drill.Apparently the only mod needed to make it work was a plate over the area where it fitted to the block.
Would any body ave an idea of a suitable model engine that I could scavenge one from.
I went to a wreckers and all the engines I saw,appeared to have internal pumps. crikey,I did not even see a red six motor.I guess its been a while since visiting the wreckers.
Can any one suggest something suitable and cheap?
Grahame
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10th March 2012 11:12 PM # ADSGoogle Adsense Advertisement
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10th March 2012, 11:17 PM #2.
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Can you seal the coolant tanks to be air tight ?
If so a length of hose and compressed air might be a cheap and quick alternative to a pump.
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10th March 2012, 11:27 PM #3
bilge pump
Hi
A portable boat bilge pump might work , they run off 12 volts . They sit on the floor of small boats .
A boat place will sell them .
I found one at the op shop for 5 bucks . I've never used it .
Mike
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11th March 2012, 12:16 AM #4
No Bob, the lathe coolant pump sits in a recess of the casting that forms the leg/base unit. Its in a damm inconvenient spot accessed by removing a plate.Its too open to seal.
I wanted to avoid air and suction as the students when unsupervised for a nano-second will blow it all over the place.
I can pump most of the coolant with the lathe pump and the rest is about 5 litres in volume.
No one before me has thought about replacing coolant and one lathe burnt out the pump as it got too thick to pump.
The kids don't give a stuff about the coolant and just keep topping it up.the coolant has lost its biocide by dilution,age and evaporation and needs replacement..
Grahame
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11th March 2012, 12:30 AM #5GOLD MEMBER
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Would an aquarium syphon pump work - see photo and cost under $3 including postage
I have an external tank that sits on the floor so I can't syphon it all out. Too lazy to disconnect all the pumbing and drain upside down so I fill the tank with water a couple of times to dilute what is in there and use the coolant pump to drain it. Not perfect but is better than nothing.Cheers,
Rod
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11th March 2012, 12:34 AM #6GOLD MEMBER
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You could also look at the cheap submersible pond pumps if the opening is large enough to lower one in.
Cheers,
Rod
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11th March 2012, 12:55 AM #7
Grahame,
I've seen one like this LION PRODUCTS DRILL POWERED SIPHON PUMP | eBay used before a similar application. This seems to be the only cheap one in aus on ebay, but i'm sure i've seen them somewhere else, maybe Bunnings or Supercheap Auto?
Ewan
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11th March 2012, 01:50 AM #8Dave J Guest
The cheap pond pumps work good and if they get stopped by something they don't burn out. You can pick them up from about $10 up depending on the flow and head hight, but just a cheap one should do your job. If it's to thick you could just fill it with water while your siphoning it out to help.
Also they are small so once you put a piece of tubing on it you could just throw it in and it will be close to the bottom of the tank to get almost all of it out.
If you do happen to find the siphon pump made from a car oil pump, I would also be interested in it.
Dave
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11th March 2012, 06:42 AM #9
Talk to your local karting shop. They should sell a pump designed to extract the old fuel from the kart tank, it's battery powered with a leg about 1.5' long. The pump pickup is at the base of the leg and the outlet is at the top, it fits through a fuel filler that's about 1.25" diameter.
This would give you access into the base of the coolant area.
I can post a photo later today if interested.
Rgds - Gavin
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11th March 2012, 08:45 AM #10
Thanks guys for the suggestions I shall follow them up.
The problem revolves around access as the sump is below floor level and the access between the lathe coolant pump and the sides of the sump are around the 1.5" mark.I had already tried a drum pump I picked up at the recyclers but its not totally effective as the height is quite low and does not allow the angle to pump all the coolant out.
The siphon pump is probably the most cost effective.
The squeeze hand pump I know cost almost nix but these kids can break industrial strength equipment, so unfortunately the the little hand pump wouldn't last long in their hands.
When I come up with the finished product,I shall post it
Grahame
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11th March 2012, 03:05 PM #11future machinist
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What about a car power steering pump i have used those with success to pump water it wont last for ever but they can be had reasonably cheaply.
BETTER TO HAVE TOOLS YOU DON'T NEED THAN TO NEED TOOLS YOU DON'T HAVE
Andre
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11th March 2012, 03:36 PM #12GOLD MEMBER
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What would suit this type of application is an air vacumn pump,will suck most anything out of sumps.
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11th March 2012, 06:28 PM #13GOLD MEMBER
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how much coolant is the to remove. bail it out.
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11th March 2012, 07:16 PM #14Senior Member
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just get a 59 dollar wet and dry shed vac suck it out in seconds thats all i do
bunnings sell em
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11th March 2012, 10:29 PM #15What would suit this type of application is an air vacumn pump,will suck most anything out of sumps.
This of course could well be terminal with bitsa of metal going thru the pump. With the former it was usually a case of rock/paper/scissors to see who the poor bugger was who had to drain the oil and check out the pump.www.lockwoodcanvas.com.au
I will never be the person who has everything, not when someone keeps inventing so much cool new stuff to buy.
From an early age my father taught me to wear welding gloves . "Its not to protect your hands son, its to put out the fire when u set yourself alight".
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