Hydraulic cylinder (hand-pump and jack) seal replace

It seems I've sinned and blown the seals of a reckoned-to-be
10Tonnes-force hydraulic cylinder. I thought pump only with left hand
and arm at full reach - couldn't overload cylinder. Apparantly not.
Different pump ratings and cylinder ratings. Pump good. Ooops.
I'bve posted a couple of pix. on my website, at
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to change seals - or direct me to a resource which shows how to do
it? If you would... The hand-pump and cylinder proved so good that I
there would be lots of tests I could use it for. So minded to go
through the learning curve in order to use hydraulics better. Hence
willing to put in a bit of effort, and know what to do with the
seals...
Reply to
Richard Smith
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It seems I've sinned and blown the seals of a reckoned-to-be 10Tonnes-force hydraulic cylinder. I thought pump only with left hand and arm at full reach - couldn't overload cylinder. Apparantly not. Different pump ratings and cylinder ratings. Pump good. Ooops. I'bve posted a couple of pix. on my website, at
formatting link
to change seals - or direct me to a resource which shows how to do it? If you would... The hand-pump and cylinder proved so good that I there would be lots of tests I could use it for. So minded to go through the learning curve in order to use hydraulics better. Hence willing to put in a bit of effort, and know what to do with the seals...
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are supposedly free downloads, but I'm running behind on my monthly quota of 4G Internet.
I took the leaking cylinder to a small repair shop and asked him to identify and order the seal. I learned a lot in the process, including that the oddball seal length the aftermarket copy of a Porta Power needed wasn't available but I could re-machine the piston to accept a common one.
Your cylinder may need the shop's special tools, like spanner wrenches, cylinder hones and valve seat reamers.
Reply to
Jim Wilkins
Ordered it. Thanks for hint.
Reply to
Richard Smith
I learned quite a lot about hydraulic seals and seal types just reading the information about various seals available on the McMaster Carr website.
Reply to
Bob La Londe
Thanks for hint - Rich S
Reply to
Richard Smith
Went to a local pub for a drink and 2-course meal, sitting in a quiet corner, and skim-read the book. Gives great overview and conveys the ideas of hydraulic systems. A hand-pump and a single-acting cylinder is much simpler than the level of this book, which is the likes of driving very heavy-duty rapid acting production equipment. However, getting the general ideas with "overshooting" the specific objective gives very welcome context. Also some of the equipment I have seen is explained by this book. So, again - many thanks for mentioning the book.
Reply to
Richard Smith
Went to a local pub for a drink and 2-course meal, sitting in a quiet corner, and skim-read the book. Gives great overview and conveys the ideas of hydraulic systems. A hand-pump and a single-acting cylinder is much simpler than the level of this book, which is the likes of driving very heavy-duty rapid acting production equipment. However, getting the general ideas with "overshooting" the specific objective gives very welcome context. Also some of the equipment I have seen is explained by this book. So, again - many thanks for mentioning the book.
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Manufacturers' application notes can be very helpful.
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Reply to
Jim Wilkins

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