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Author Topic: LT40 hydraulic system Vs LT40 Super hydraulic system  (Read 13021 times)

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Offline woodhick

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Re: LT40 hydraulic system Vs LT40 Super hydraulic system
« Reply #20 on: September 05, 2007, 07:47:09 AM »
Dan, I have a manual LT40 that I have added hydraulics to.  I just added the loader last week and love it but it is slow. I was thinking of doing the double pump setup also.  Please keep this thread up to date for those of us thinking of doing the same thing.  I am going to buy a two plane clamp assembly from woodmizer to replace the home made one on my mill as I think by the time I redo one myself and buy the parts it would be better to just buy theirs.  My pump assembly is a Haldex brand that came from Graingers for about $300.  Pump specs are the same as woodmizer.  You may want to check out that route for your second pump.  I know from talking to sparks that you will have to upgrade the circuit breakers to 450 amp.  Sparks helped me out tremendously when I added the power strip and some other parts for my mill, I'm sure he would be glad to answer any of your questions.   Good luck and keep us posted.
Woodmizer LT40 Super 42hp Kubota, and more heavy iron woodworking equipment than I have room for.

Offline Dan_Shade

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Re: LT40 hydraulic system Vs LT40 Super hydraulic system
« Reply #21 on: September 05, 2007, 08:15:07 AM »
I'll keep everyone updated with what I do.  The customer service rep seemed a little "less than enthusiastic" at first, but came around a little bit.  He basically told me it would be "unsupported", but I already knew that, and besides, the mill is out of that warranty anyways.
Woodmizer LT40HDG25 / Stihl 066 alaskan
lots of dull bands and chains

There's a fine line between turning firewood into beautiful things and beautiful things into firewood.

Offline Bibbyman

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Re: LT40 hydraulic system Vs LT40 Super hydraulic system
« Reply #22 on: September 05, 2007, 06:05:18 PM »
Hello Bibbyman
I have an LT40 HDD and a twin blade edger.  I cut full time.  I'm interested in how you patched in the hydraulic power pack.  I work almost entirely from a fixed site and could hook up a single or 3 phase power pack- That way I would imagine I would only be making minor mods to the LT40 and should I upgrade I could keep the power pack.  Any advice you have would be very much appreciated.
Regards

AusLJW

Here is a link to the "Useful Sawmill Mods" thread where a lot of info and pictures are posted about the power pack I installed.


Useful Sawmill Mods - hydraulic power pack upgrade



Here is a look inside my HD box.  As you can see I took out the WM pumps and used the box for my battery.  I ran the pressure and return lines into the box through the hole in the bottom and connected them to the lines going to the valve body. But you wouldn't have to.  All you need to do is to disconnect the pressure and return lines from the pumps and connect the lines from the power pack.  You could use quick connectors and that way you could still use your DC pumps as backup or when sawing mobile.  I didnt.

To keep the WM pumps from running, disconnect the one little wire that comes from the micro switch to the solenoid(s) that kick on the pump(s).
Wood-Mizer LT40HDE25 Super 25hp 3ph with Command Control and Accuset.
Sawing since '94

Offline jpgreen

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Re: LT40 hydraulic system Vs LT40 Super hydraulic system
« Reply #23 on: September 06, 2007, 11:25:57 AM »
Ditto on the note about the Grainger pump. I think the slow up and down speed bothers me more than anything.  Faster hydraulics would be nice though.
-95 Wood-Mizer LT40HD 27 Hp Kawasaki water cooled engine-

Offline sparks

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Re: LT40 hydraulic system Vs LT40 Super hydraulic system
« Reply #24 on: September 06, 2007, 01:03:15 PM »
[1] You will need to replace you battery with either a NAPA NBR7237 or NBR7236, Carquest 31HDP30, Interstate 31P-MHD, Deka 1231MF or1231MP. The standard battery does not have large enough plates to handle the extra load of the second pump.
[2] You will need a 140 amp alternator as well as changing the charging wiring. Right now you have a wire that goes from the alternator to the starter, from the starter to the Bat terminal of the key, from the Bat terminal of the key to the fuse. You will need to add a 6ga wire from the alternator to the fuse. The wiring on the standard mill can not handle the load.
[3] You will have to add a second fuse on top of the 225 amp fuse already there. It takes 2 335amp fuses to run both pumps.
[4] You will have to add a second solenoid and wire them properly.
[5] You will need to add a different contact strip that has 2 cables unless you can add the second cable and keep good connection.

I have included diagrams for you to view.  Thanks     
\"America will never be destroyed from the outside. If we falter and lose our freedoms, it will be because we destroyed ourselves.\" Abraham Lincoln

Offline sparks

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Re: LT40 hydraulic system Vs LT40 Super hydraulic system
« Reply #25 on: September 06, 2007, 01:04:29 PM »
Sorry, the 2 hose list are to show you what hoses need to be changed and I included a hose diagram.  Thanks
\"America will never be destroyed from the outside. If we falter and lose our freedoms, it will be because we destroyed ourselves.\" Abraham Lincoln

Offline Dan_Shade

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Re: LT40 hydraulic system Vs LT40 Super hydraulic system
« Reply #26 on: September 06, 2007, 01:43:36 PM »
Thanks, Sparks.  You lost me on the alternator wiring bit.  Would I need to replace the wire from the altenator to the key switch? or just run it straight to the fuse. 

I'm going to have to look at the schematics that I have of the setup on the LT40.

I realize the problem with these projects is the little stuff will nickel and dime you, so I want to get all of that straight prior to pulling the trigger.

I figured that the larger alternator would more be necessary for the larger drive motors of a super, not the pump, but those 12V motors pull a lot of current any way you look at it.
Woodmizer LT40HDG25 / Stihl 066 alaskan
lots of dull bands and chains

There's a fine line between turning firewood into beautiful things and beautiful things into firewood.

Offline sparks

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Re: LT40 hydraulic system Vs LT40 Super hydraulic system
« Reply #27 on: September 06, 2007, 01:52:26 PM »
You will have to run a 6ga wire from the alternator to the fuse. That way the circuit can handle the load to the alternator.  Thanks
\"America will never be destroyed from the outside. If we falter and lose our freedoms, it will be because we destroyed ourselves.\" Abraham Lincoln

Offline Bibbyman

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Re: LT40 hydraulic system Vs LT40 Super hydraulic system
« Reply #28 on: September 06, 2007, 02:16:14 PM »
Looks like Wood-Mizer needs to bundle up an upgrade kit with instructions.   smiley_headscratch

Call it the Wood-Mizer Double Pumper! 
Wood-Mizer LT40HDE25 Super 25hp 3ph with Command Control and Accuset.
Sawing since '94

Offline Dan_Shade

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Re: LT40 hydraulic system Vs LT40 Super hydraulic system
« Reply #29 on: September 06, 2007, 03:08:21 PM »
it probably would sell :)
Woodmizer LT40HDG25 / Stihl 066 alaskan
lots of dull bands and chains

There's a fine line between turning firewood into beautiful things and beautiful things into firewood.

Offline SawDust_Studios

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Re: LT40 hydraulic system Vs LT40 Super hydraulic system
« Reply #30 on: September 06, 2007, 05:02:50 PM »
Dan,

Just ask yourself how long it will be until you like the feed speed of the super?  Why do you think you have my ole' mill  :D :D

Then of course, there is the cutting power of the diesel!!!  Whats the point of loading the logs faster if it still takes you longer to cut through them.  Of course, that said, this from a guy that is either downgrading or getting out of the biz altogether.  But it is something to consider.

You have to consider the cost vs production too.. Will spending the 1k on upgrades really make production much faster?  Probably, but how much?  Of course, your like me and just like the idea that you probably can do it...  ;)

Dave
Making Sawdust on a Woodmizer LT40SHD CAT 51 /WM Twin Blade Edger and WM DH Kiln

Offline Dan_Shade

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Re: LT40 hydraulic system Vs LT40 Super hydraulic system
« Reply #31 on: September 06, 2007, 05:32:46 PM »
I know what you mean.  I am trying to get it all preplanned out, so that I can figure out exactly what I want to do, and if it makes sense financially to go for it. 

It may well make more sense to bite the bullet and find a deal on a super, but I've made up my mind that I need to be showing profits before I go that far, and preferably have paid off this mill.   maybe I should hold off and see if I win that 25th anniversary mill :)
Woodmizer LT40HDG25 / Stihl 066 alaskan
lots of dull bands and chains

There's a fine line between turning firewood into beautiful things and beautiful things into firewood.

Offline Dan_Shade

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Re: LT40 hydraulic system Vs LT40 Super hydraulic system
« Reply #32 on: September 06, 2007, 09:49:37 PM »
are the 3/8 and 1/4 hose fittings interchangeable?  it looks like it would be around $350 or so for hoses through woodmizer + the pump + all the electrical stuff.  i'm guessing the whole outfit will be over $1000 if the alternator is upgraded.
Woodmizer LT40HDG25 / Stihl 066 alaskan
lots of dull bands and chains

There's a fine line between turning firewood into beautiful things and beautiful things into firewood.

Offline jpgreen

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Re: LT40 hydraulic system Vs LT40 Super hydraulic system
« Reply #33 on: September 06, 2007, 11:48:58 PM »
That is a real good point Dave.

Cause when I think about it, I'm spending time studying a log while I'm loading, clamping and turning so really, if I couldn't put the blade through the wood faster, I don't think the few seconds moving the log would up my productivity any.

Now faster up and down speeds, and being able to work the hydraulics at at point on the rail would definitely speed up the old LT 40..  8)

Not trying to highjack this thread, but just putting thoughts out there.  When it comes to spending money these days, you gotta be careful.
-95 Wood-Mizer LT40HD 27 Hp Kawasaki water cooled engine-

Offline pnyberg

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Re: LT40 hydraulic system Vs LT40 Super hydraulic system
« Reply #34 on: June 01, 2010, 04:49:52 PM »
I'm walking through the archives again, and came across this old thread. 

I must be getting better with my hydraulics handling, because they sometimes they feel slow to me now.  And I've seen all that empty space in my hydraulics box, so wheels in my head have been slowly turning.  I'll probably find more information in the archives as I continue to walk forward through time, but I didn't want to lose this thread, so I'm bumping it up.

So, Dan, you spent a lot of time looking into this back in 2007, did you ever pull the trigger?  If so, how did it work out?  If not, why not?

All other information and opinions on this topic are welcome as well.

Thanks,
    Peter
No longer milling

Offline Dan_Shade

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Re: LT40 hydraulic system Vs LT40 Super hydraulic system
« Reply #35 on: June 01, 2010, 06:00:15 PM »
I didn't do it.

The main reason I didn't is the electrical system on a LT40 Hydraulic is not rated as high as the one on a superhydraulic.  The super has a larger battery, and a higher rated alternator.  It would have cost me several thousand to do it, and possibly could impact resale value of the mill.

I determined it would be a better idea to buy a larger mill and get the rest of the advantages of a super over a hydraulic mill.
Woodmizer LT40HDG25 / Stihl 066 alaskan
lots of dull bands and chains

There's a fine line between turning firewood into beautiful things and beautiful things into firewood.

Offline Bandmill Bandit

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Re: LT40 hydraulic system Vs LT40 Super hydraulic system
« Reply #36 on: June 24, 2010, 09:54:38 AM »
I am thinking of doing the upgrades but including the ligt and feed motors as well. The faster hydraulics will be good but i rarely use my loader arms. I have a couple a pieces of 12 foot cedar power poles I take with me that I use for a roll way. I really dont think there is a mod capable of beating the roll way for loading time. Cuts down FEL time too cause I only have to load the roll way once or twice a day depending on the timber. I have had up to 15, 12 foot logs on at the same time smallest was about 20 inch small end. average about 26 inch. I saw over size logs from the Weyerhaeuser mill so I dont see to much small stuff 
Skilled Master Sawyer. "Skilled labour don't come cheap. Cheap labour dont come skilled!
2018 F150 FX4, Husqvarna 340, 2 Logright 36 inch cant hooks and a bunch of stuff I built myself


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