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Wood splitter help
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stryped
Dec 2, 2016, 8:43:13 AM12/2/16
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My dad acquired a wood splitter project at auction from my deceased grandfather's estate. It was incomplete. He added an engine and had it painted. It will cycle the ram to the piece of wood then stop. The pump on it my grandfather installed was a Vickers vane pump but no other markings on it other than several paten numbers.
I am assuming the pump is too small. I wanted to know what you guys think. Here is a picture: https://s15.postimg.org/wg0m9uaqz/20161124_155208.jpg
I am assuming the pump is too small. I wanted to know what you guys think. Here is a picture: https://s15.postimg.org/wg0m9uaqz/20161124_155208.jpg
Jim Wilkins
Dec 2, 2016, 10:18:19 AM12/2/16
to
"stryped" <stry...@yahoo.com> wrote in message
news:9d554cc1-8d31-46d7...@googlegroups.com...
==================
The critical parts specific to a log splitter are a two-speed gear
pump and a control valve that latches in position for reverse but NOT
forward.
http://www.baileyhydraulics.com/#/log-splitter-parts
The two-speed pump automatically downshifts to 1/4 the flow rate when
the cylinder pressure reaches ~600 PSI, so it retracts and advances
quickly under light loads and doesn't stall the motor during a
difficult split. The relief valve may be part of the control valve
assembly. The pressure gauge is optional, and a weak point due to the
vibration. If you want one it should be snubbed and filled with
glycerin or the needle will vibrate into an unreadable blur.
Mine which was assembled by someone else from Northern Tool components
has a 5.5 HP engine, an L095 Lovejoy coupler, an 11 GPM pump and a
3-1/2" cylinder, which all work well together. I recently discovered
that the engine mounting plate had warped from welding and was
distorting the engine crankcase. It's flat within a few thousandths
now, thanks to an afternoon of grinding and filing.
http://www.northerntool.com/shop/tools/category_hydraulics
The plastic pump bracket #3030-1751 has enough give that the bolts
loosen, so I drilled and safety-wired them. It fits a 5.5HP Tecumseh
and the 6.5 HP Predator from HF. The advantage of a direct mount on
the engine is no side loading on the pump shaft bearings.
I can't tell if there is a strainer screen between the reservoir and
the pump inlet. I made an in-line housing for one from a 1-1/2" pipe
tee. The third opening is the drain plug.
--jsw
news:9d554cc1-8d31-46d7...@googlegroups.com...
The critical parts specific to a log splitter are a two-speed gear
pump and a control valve that latches in position for reverse but NOT
forward.
http://www.baileyhydraulics.com/#/log-splitter-parts
The two-speed pump automatically downshifts to 1/4 the flow rate when
the cylinder pressure reaches ~600 PSI, so it retracts and advances
quickly under light loads and doesn't stall the motor during a
difficult split. The relief valve may be part of the control valve
assembly. The pressure gauge is optional, and a weak point due to the
vibration. If you want one it should be snubbed and filled with
glycerin or the needle will vibrate into an unreadable blur.
Mine which was assembled by someone else from Northern Tool components
has a 5.5 HP engine, an L095 Lovejoy coupler, an 11 GPM pump and a
3-1/2" cylinder, which all work well together. I recently discovered
that the engine mounting plate had warped from welding and was
distorting the engine crankcase. It's flat within a few thousandths
now, thanks to an afternoon of grinding and filing.
http://www.northerntool.com/shop/tools/category_hydraulics
The plastic pump bracket #3030-1751 has enough give that the bolts
loosen, so I drilled and safety-wired them. It fits a 5.5HP Tecumseh
and the 6.5 HP Predator from HF. The advantage of a direct mount on
the engine is no side loading on the pump shaft bearings.
I can't tell if there is a strainer screen between the reservoir and
the pump inlet. I made an in-line housing for one from a 1-1/2" pipe
tee. The third opening is the drain plug.
--jsw
Jim Wilkins
Dec 2, 2016, 12:38:41 PM12/2/16
to
"Jim Wilkins" <murat...@gmail.com> wrote in message
news:o1s399$bg5$1...@dont-email.me...
> My dad acquired a wood splitter project ...
> ...The advantage of a direct mount on the engine is no side loading
http://www.arboristsite.com/community/threads/indirect-drive-hydraulic-pump-on-a-wood-splitter.128511/
"You didn't say what pump you're using, but if it's a 2-stage pump
they are not designed for side loading at all. 2-stage pumps are
designed for low torque, high speed drives, shaft-to-shaft with the
engine. They use very small shafts and some of those have a snap ring
groove inside the pump, which is where they break. Then you buy a new
pump.
Many larger pumps have an outboard bearing to support the shaft and
they can be pulley driven. But I think the smallest ones use 3/4"
shafts."
news:o1s399$bg5$1...@dont-email.me...
> My dad acquired a wood splitter project ...
> ...The advantage of a direct mount on the engine is no side loading
> on the pump shaft bearings.
>
> --jsw
>
http://www.arboristsite.com/community/threads/indirect-drive-hydraulic-pump-on-a-wood-splitter.128511/
"You didn't say what pump you're using, but if it's a 2-stage pump
they are not designed for side loading at all. 2-stage pumps are
designed for low torque, high speed drives, shaft-to-shaft with the
engine. They use very small shafts and some of those have a snap ring
groove inside the pump, which is where they break. Then you buy a new
pump.
Many larger pumps have an outboard bearing to support the shaft and
they can be pulley driven. But I think the smallest ones use 3/4"
shafts."
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