Metalworking (rec.crafts.metalworking) Discuss various aspects of working with metal, such as machining, welding, metal joining, screwing, casting, hardening/tempering, blacksmithing/forging, spinning and hammer work, sheet metal work.

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Default Hydraulic fluid question

On my new old jack, I put a pint of jack oil in it, and it worked up and
down. It sputtered a couple of times, and kicked out some milky looking
fluid from the filler hole. Aha, I suspected water. I drained all the oil,
and it was a milky gray versus the light black of new oil.

My question: will this separate overnight, and can I then recover the oil
and toss the water?

May just flush and add new oil, but flush with what?

Steve


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Default Hydraulic fluid question

On 2009-09-10, SteveB wrote:
On my new old jack, I put a pint of jack oil in it, and it worked up and
down. It sputtered a couple of times, and kicked out some milky looking
fluid from the filler hole. Aha, I suspected water. I drained all the oil,
and it was a milky gray versus the light black of new oil.

My question: will this separate overnight, and can I then recover the oil
and toss the water?


I had milky compressor oil once, in the old Quincy that I have.

I set it in a plastic jar on purpose to see if it would separate.

The short of it is that it did not separate after several
weeks.

i

May just flush and add new oil, but flush with what?

Steve


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Default Hydraulic fluid question


"SteveB" wrote in message
...
On my new old jack, I put a pint of jack oil in it, and it worked up and
down. It sputtered a couple of times, and kicked out some milky looking
fluid from the filler hole. Aha, I suspected water. I drained all the
oil, and it was a milky gray versus the light black of new oil.

My question: will this separate overnight, and can I then recover the oil
and toss the water?

May just flush and add new oil, but flush with what?

Steve



Put it in an old pot on the stovetop - heat to drive off the water - no
warrantee / don't burn your house down / don't get caught by the missus etc.

I don't know if it works but it should - may cost more than new oil......


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Default Hydraulic fluid question


"SteveB" wrote in message
...
On my new old jack, I put a pint of jack oil in it, and it worked up and
down. It sputtered a couple of times, and kicked out some milky looking
fluid from the filler hole. Aha, I suspected water. I drained all the
oil, and it was a milky gray versus the light black of new oil.

My question: will this separate overnight, and can I then recover the oil
and toss the water?

May just flush and add new oil, but flush with what?

Steve


Add a bit of acid and the water will separate. Then you have to neutralize
the acid somehow.


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Default Hydraulic fluid question

On Wed, 9 Sep 2009 21:25:57 -0600, "SteveB"
wrote:

On my new old jack, I put a pint of jack oil in it, and it worked up and
down. It sputtered a couple of times, and kicked out some milky looking
fluid from the filler hole. Aha, I suspected water. I drained all the oil,
and it was a milky gray versus the light black of new oil.

My question: will this separate overnight,


No

and can I then recover the oil and toss the water?


Having had a steam heating pipe develop a pinhole leak into a tank
containing 50,000 litres of lubricating oil being manufactured, the
only way to remove the water is to heat the emulsion until the water
evaporates. We had to heat the oil mix to 80C for about 3 days ( in
another tank) until the oil was dry ( crackle test ). We guessed
that there was about 200 litres of water mixed in the tank as it was
almost overflowing through the dip hatch.
That happened to about 6 tanks over a 6 month period in '92, not
too bad as they were built in '65, 27 years of continuous use before
failure of the heating coils.

May just flush and add new oil, but flush with what?

First flush with kero, then flush with new/dried oil, then heat
jack to about 45C ( hot to hold ) and flush about 3 more times with
new/dried oil then final fill with new oil.

Alan


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Default Hydraulic fluid question


"Buerste" wrote in message
...

"SteveB" wrote in message
...
On my new old jack, I put a pint of jack oil in it, and it worked up and
down. It sputtered a couple of times, and kicked out some milky looking
fluid from the filler hole. Aha, I suspected water. I drained all the
oil, and it was a milky gray versus the light black of new oil.

My question: will this separate overnight, and can I then recover the
oil and toss the water?

May just flush and add new oil, but flush with what?

Steve


Add a bit of acid and the water will separate. Then you have to
neutralize the acid somehow.


For $4, I'll just go get another quart of oil.


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Default Hydraulic fluid question


"SteveB" wrote in message
...
On my new old jack, I put a pint of jack oil in it, and it worked up and
down. It sputtered a couple of times, and kicked out some milky looking
fluid from the filler hole. Aha, I suspected water. I drained all the
oil, and it was a milky gray versus the light black of new oil.

My question: will this separate overnight, and can I then recover the oil
and toss the water?

May just flush and add new oil, but flush with what?


Flush with kero and refill with fresh jack oil.



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Default Hydraulic fluid question

On Wed, 9 Sep 2009 21:25:57 -0600, the infamous "SteveB"
scrawled the following:

On my new old jack, I put a pint of jack oil in it, and it worked up and
down. It sputtered a couple of times, and kicked out some milky looking
fluid from the filler hole. Aha, I suspected water. I drained all the oil,
and it was a milky gray versus the light black of new oil.

My question: will this separate overnight, and can I then recover the oil
and toss the water?


Aw, ****. stryped, is that you hacking SteveB's account?


May just flush and add new oil, but flush with what?


Denatured alcohol. It'll absorb the moisture.

--
Government is like a baby. An alimentary canal with a big appetite
at one end and no sense of responsibility at the other.
--Ronald Reagan
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Default Hydraulic fluid question

On Sep 9, 9:25*pm, "SteveB" wrote:
On my new old jack, I put a pint of jack oil in it, and it worked up and
down. *It sputtered a couple of times, and kicked out some milky looking
fluid from the filler hole. *Aha, I suspected water. *I drained all the oil,
and it was a milky gray versus the light black of new oil.

My question: *will this separate overnight, and can I then recover the oil
and toss the water?

May just flush and add new oil, but flush with what?

Steve


"light black"?? What are you using, old crankcase drippings? The
jack oil I have looks like regular straight mineral oil, clear, no
color at all. In a pinch, I've been known to use 10W30, but the stuff
that leaks out of the chink jacks I have is clear.

Stan
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Default Hydraulic fluid question

Ignoramus9171 wrote:
On 2009-09-10, SteveB wrote:
On my new old jack, I put a pint of jack oil in it, and it worked up
and down. It sputtered a couple of times, and kicked out some milky
looking fluid from the filler hole. Aha, I suspected water. I
drained all the oil, and it was a milky gray versus the light black
of new oil.

My question: will this separate overnight, and can I then recover
the oil and toss the water?


I had milky compressor oil once, in the old Quincy that I have.

I set it in a plastic jar on purpose to see if it would separate.

The short of it is that it did not separate after several
weeks.


Compressor shop told me I need to run the compressor over an hour once in a
while to boil off the water in the oil.




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Default Hydraulic fluid question

On 2009-09-11, Bob F wrote:
Ignoramus9171 wrote:
On 2009-09-10, SteveB wrote:
On my new old jack, I put a pint of jack oil in it, and it worked up
and down. It sputtered a couple of times, and kicked out some milky
looking fluid from the filler hole. Aha, I suspected water. I
drained all the oil, and it was a milky gray versus the light black
of new oil.

My question: will this separate overnight, and can I then recover
the oil and toss the water?


I had milky compressor oil once, in the old Quincy that I have.

I set it in a plastic jar on purpose to see if it would separate.

The short of it is that it did not separate after several
weeks.


Compressor shop told me I need to run the compressor over an hour once in a
while to boil off the water in the oil.



I heard that, too. I will see if I need to. I did run my 7.5 HP Quincy
for up to 40 minutes nonstop for that reason (and to test whether it
had any problems).

i
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Default Hydraulic fluid question

On Thu, 10 Sep 2009 21:25:39 -0700 (PDT), wrote:

On Sep 9, 9:25*pm, "SteveB" wrote:
On my new old jack, I put a pint of jack oil in it, and it worked up and
down. *It sputtered a couple of times, and kicked out some milky looking
fluid from the filler hole. *Aha, I suspected water. *I drained all the oil,
and it was a milky gray versus the light black of new oil.

My question: *will this separate overnight, and can I then recover the oil
and toss the water?

May just flush and add new oil, but flush with what?

Steve


"light black"?? What are you using, old crankcase drippings? The
jack oil I have looks like regular straight mineral oil, clear, no
color at all. In a pinch, I've been known to use 10W30, but the stuff
that leaks out of the chink jacks I have is clear.

Stan



I generally simply fill all my jacks with ATF.

Works great.

Gunner

The current Democratic party has lost its ideological basis for
existence.
- It is NOT fiscally responsible.
- It is NOT ethically honorable.
- It has started wars based on lies.
- It does not support the well-being of americans - only billionaires.
- It has suppresed constitutional guaranteed liberties.
- It has foisted a liar as president upon America.
- It has violated US national sovereignty in trade treaties.
- It has refused to enforce the national borders.

....It no longer has valid reasons to exist.
Lorad474
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Default Hydraulic fluid question

On Fri, 11 Sep 2009 23:54:24 -0700, Gunner Asch
wrote:

On Thu, 10 Sep 2009 21:25:39 -0700 (PDT), wrote:

On Sep 9, 9:25*pm, "SteveB" wrote:
On my new old jack, I put a pint of jack oil in it, and it worked up and
down. *It sputtered a couple of times, and kicked out some milky looking
fluid from the filler hole. *Aha, I suspected water. *I drained all the oil,
and it was a milky gray versus the light black of new oil.

My question: *will this separate overnight, and can I then recover the oil
and toss the water?

May just flush and add new oil, but flush with what?

Steve


"light black"?? What are you using, old crankcase drippings? The
jack oil I have looks like regular straight mineral oil, clear, no
color at all. In a pinch, I've been known to use 10W30, but the stuff
that leaks out of the chink jacks I have is clear.

Stan



I generally simply fill all my jacks with ATF.

Works great.

Gunner


Yeah, ATF should work just fine as an 'already on hand' thing - but
the detergents and the friction modifiers are kinda lost on a jack.

Now if you already have it for other uses, tractor hydraulic fluid
would be the cheap bulk fluid of choice. Probably the lighter stuff,
a 35W or 70W instead of a 90W.

Reminds me, I need to go pick up a 5-gal pail at NAPA so I can get
this old Davis trencher running... Not that I can water the lawn or
anything, they arrest you for that.

-- Bruce --
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