Huss Log Splitter

[freedy]

I just bought a 1987 Huss Model 14190 log splitter from a rental store.
The man told me the hydraulics are slow. Got it home and he is right, but it splits wood fine. It has a 10 HP B&S, 4.5" x 26" cylinder with a 2.5" ram, 3018 Prince valve, all I know about the pump is its a 2 stage. The splitter is rated at 19 ton with 15 sec. cycle time. I did not time the cycle at this point.
The thing I don't like is it doesn't have a inline filter and only 2.5 gal hyd resivor. Where should I start and how big a mistake did I make?

 

[beenthere]

Do you have some pics to post? Might be able to help with some answers. Can't imagine it was a "mistake". Unless you paid too much.

 

[crazyal]

Are you sure it's a two stage pump? 19 tons seams very light for a 10hp 4.5: cylinder splitter.

 

[brandoro]

If the lack of filter is a concern it shouldn't be hard for you to add one. If that looks like a big deal then change the fluid so you know you are starting fresh on that.
Unless the oil is getting too hot while you are splitting I wouldn't worry too much about the size of the reservoir either.
Being 20+ years old and from a rental shop if either of those things was going to kill it that would have happened long ago IMO.

 

[AKKAMAAN]

I just bought a 1987 Huss Model 14190 log splitter from a rental store.
The man told me the hydraulics are slow. Got it home and he is right, but it splits wood fine. It has a 10 HP B&S, 4.5" x 26" cylinder with a 2.5" ram, 3018 Prince valve, all I know about the pump is its a 2 stage. The splitter is rated at 19 ton with 15 sec. cycle time. I did not time the cycle at this point.
The thing I don't like is it doesn't have a inline filter and only 2.5 gal hyd resivor. Where should I start and how big a mistake did I make?

Try to see if there is info on pump about make and model#.....

I assume 15 sec cycle time counts for a combined extend retract....
Then the flow points at a around 12.1 gpm pump (at high stage), and force points at a PRV set at around 2400 psi...
Seems like the 10hp B&S will have easy days on that splitter....plenty of power for a 12gpm two-stage pump

I would time the extend and retract cycle separately....
Also get a meter to check engine rpm's at full speed....should be 3600rpm to meet Haldex-Barnes flow ratings for two-stage pumps

2.5 usg tank is small for a 12 gpm pump, especially when PRV by passes flow at max pressure. Run the splitter for a few hours and check, by hands on how/if/where heat develop above 120-140F range...and then we design new tank size from there...Also use a 0-3000 psi pressure gauge to monitor pump pressure during operation , to see if pump switches between high and low stages....Make a "log", and write down all pressures during different parts of cycling with and without work load

Don't mount any filter till you know for sure you need a larger tank...

If splitter have been a rental for many years and still splits ok, there no reason to panic....even though I'd recommend to add a return filter

If splitter is slow (slower than promised rating), it can be caused by
>> a worned pump...this will quickly heat up the pump housing when pushing high pressure at low stage
>> low engine rpm's...
>>The stage pressure valve in the valve is stuck, and by passes high stage flow back to tank (suction side)
>> leaking piston seal....this will quickly heat up the cylinder when pushing high pressure at low stage
>> CV spool is interfered to make full movement (should be about 3/8"-1/2")...this will quickly heat up the CV

 

[AKKAMAAN]

Are you sure it's a two stage pump? 19 tons seams very light for a 10hp 4.5: cylinder splitter.

Originally Posted by freedy:
"all I know about the pump is its a 2 stage"

Hopefully freedy REALLY know this..

Splitting force is 100% dependent on TWO things....Cylinder diameter and applied pump pressure....HP is secondary.....even a 1hp engine can push 19tons, if pump flow is low enough...

 

[AKKAMAAN]

If the lack of filter is a concern it shouldn't be hard for you to add one. If that looks like a big deal then change the fluid so you know you are starting fresh on that.
Unless the oil is getting too hot while you are splitting I wouldn't worry too much about the size of the reservoir either.
Being 20+ years old and from a rental shop if either of those things was going to kill it that would have happened long ago IMO.

+1:thumbsup:

 

[Diamondpilot]

If the lack of filter is a concern it shouldn't be hard for you to add one. If that looks like a big deal then change the fluid so you know you are starting fresh on that.
Unless the oil is getting too hot while you are splitting I wouldn't worry too much about the size of the reservoir either.
Being 20+ years old and from a rental shop if either of those things was going to kill it that would have happened long ago IMO.

I agree. As for the filter get one for the return side, not the pressure side. I like filters to be between the valve and the tank on the return hose. I would change out the fluid and check out the pump. The slow cycle may mean the pump has lost its two speed ability and is stuck in the slow gear so to speak.

Chris

 

[freedy]

Thanks for the help guys! this will give me a starting point.
Think I'll start with the pump to make sure the two stage valve is working.
Any advice on how to disasemble it?
Can't send pictures right know camera is broke sorry.
Paid $400

 

[AKKAMAAN]

Thanks for the help guys! this will give me a starting point.
Think I'll start with the pump to make sure the two stage valve is working.
Any advice on how to disasemble it?
Can't send pictures right know camera is broke sorry.
Paid $400

There is only the pressure valve and a check valve to take apart....
we need to determine the make of pump first...

here is an example of a Haldex-Barnes info pdf, showing the cross section of the valving...