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Author Topic: lt40 super, Super expensive part! lol  (Read 38897 times)

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Offline geraldhale

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lt40 super, Super expensive part! lol
« on: November 01, 2011, 08:11:48 PM »
 I have a 2005 lt40 super electric with everything I could get on it and upgraded after some problems to the accuset 2 in 2008, I used the mill some when it was new to up my production of my big mill but dont use it to much now, it only has 1100 hours on it and today the head all of a sudden just stoped going down? it would go up but not down so I did the trouble shhoting and called wood mizer and was told I need to buy a $700 (FUSE) H block panel, there is no protection for this and I was told it got fried by what could be a bad ground or loose wire or who knows? they called it transient voltage?
 I was told they cant put any kind of protection on this panal and it scares the you know what out of me to think about replacing a $700 panal and that it may go again at anytime for several reasons!!!!
 Has anyone else had and gone threw this problem ?
 I was told that because the drive and up and down motors are DC they run at a much higher voltage than AC motors and that makes it much harder to protect ? with that in mind since they sold me a three phase electric mill I wish they had put AC motors on it to start with??????

 Any help or advice would be appreciated.





/
lt40 super,Meadows edger,Weinig moulder,24" Rockwell planer, Salem mill,Cornell edger,Pop up end trim, Fulgum chipper, Baker resaw, hazledine pointer, Landen strapping machine, John deere 480B lift, Case W20 wheel loader.

Offline Jasperfield

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Re: lt40 super, Super expensive part! lol
« Reply #1 on: November 01, 2011, 09:57:41 PM »
I'm only about eight hours from Richmond.

How much do you want for it?

Offline Taylortractornut

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Re: lt40 super, Super expensive part! lol
« Reply #2 on: November 01, 2011, 10:58:34 PM »
Something Ive learnt  mechanicing  and  parts hunting is that that  part was probably outsourced.     I have a friend that rebuilt a metal shear that was getting scrapped at work,      The company had a little electric part that was gonna cost 900 to replace.  He got it from radioshack for 9.95.   look around a bit for it, even look at the part for a supplier.     Can you post a picture  of the part?   Try an electrical supply outlet.
My overload permit starts after sunset

Offline Old Hilly

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Re: lt40 super, Super expensive part! lol
« Reply #3 on: November 02, 2011, 03:49:18 AM »
Gerald, you can bet that the saw maker didn't build the panel. They might have designed it but they didn't actually make it, some other company did the circuit layout, installed the components, mounted the board in a box with some conectors and sent it off to the saw maker.
What you need to do is some detective work and here, Google is your best friend. You might even find that there is a rebuilt/service exchange  device available, assuming that this box contains components other than just plain old fuses. If it's only fuses then just go out and buy a ready-made panel from your local auto-parts store. If there are lots of little black and coloured things with lots of legs :o soldered to a circuit board then you need someone (probably younger than about 20) who talks a strange language ??? and has really thick glasses :P because he plays with these things all day. Someone called an "electronics nut" down here in OZ.
Good luck mate.

Offline Bibbyman

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Re: lt40 super, Super expensive part! lol
« Reply #4 on: November 02, 2011, 08:03:23 AM »
We had the Accuset 2 about a year before it was available to the public as we were one of the locations that they field tested it.  We updated the software programming a number of times and maybe swapped out a couple of small components but nothing has failed. 

Its been like an anvil in reliability.   Then we use ours every day and it is under roof but does suffer from all the other heat, cold, humidity, etc. that nature puts out.   
Wood-Mizer LT40HDE25 Super 25hp 3ph with Command Control and Accuset.
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Offline Meadows Miller

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Re: lt40 super, Super expensive part! lol
« Reply #5 on: November 02, 2011, 10:51:02 AM »
Gday

and welcome to the forum Geraldhale ;) :):) 8) 8) I cant help you with your isue at hand  :( but I would like to know what type of mill you are running Mate  ;) ;D ;D 8)

Hilly if you ever know off anyone that needs someone that is awesome with sett works and sizing systems down here I can put you onto a top bloke in Melbourne he can sort out anything  :o :) ;) :D ;D ;D 8) 8)

Regards Chris
4TH Generation Timbergetter

Offline geraldhale

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Re: lt40 super, Super expensive part! lol
« Reply #6 on: November 02, 2011, 01:25:16 PM »
We had the Accuset 2 about a year before it was available to the public as we were one of the locations that they field tested it.  We updated the software programming a number of times and maybe swapped out a couple of small components but nothing has failed. 

Its been like an anvil in reliability.   Then we use ours every day and it is under roof but does suffer from all the other heat, cold, humidity, etc. that nature puts out.   



 Yes this is my secound wood mizer, and mine is in a building also and Ive been fairly happy with it but it does not get ran everyday, but a $700 part that can go bad at a drop of the hat and cant be pined down to to a particular problem? the talk I had with wood mizer was they can send me several things to check and I guess that is what I will do but it still makes me nervous at best, I just wish there was some way I could protect this part.
 As for looking to buy this panel dirrect? the only markings on it is wood mizer? and I have no problem buying it somewhere else it I could save money but dont get me wrong Ive been happy with wood mizer over all and have owned one for over 15 years but this problem in there mill makes me a nervous customer.
lt40 super,Meadows edger,Weinig moulder,24" Rockwell planer, Salem mill,Cornell edger,Pop up end trim, Fulgum chipper, Baker resaw, hazledine pointer, Landen strapping machine, John deere 480B lift, Case W20 wheel loader.

Offline mikeb1079

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Re: lt40 super, Super expensive part! lol
« Reply #7 on: November 02, 2011, 07:36:18 PM »
gerald try to post a pic if you can of the part.  it may help some here to see it and troubleshoot for you.
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Offline spencerhenry

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Re: lt40 super, Super expensive part! lol
« Reply #8 on: November 03, 2011, 09:12:10 AM »
sounds like original accuset. i had several of them crap out which were replaced under warrantly. finally i got accuset 2, never a problem since. it is not a simple electronic part that you will find anywhere except from the people who make it.

Offline DanG

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Re: lt40 super, Super expensive part! lol
« Reply #9 on: November 03, 2011, 10:19:29 AM »
Hi Gerald, and welcome. :)

Their use of the term "transient voltages" suggests that they are talking about some kind of very sensitive electronic components.  The recommendation that you check for loose wires and grounding is good advice, as that would be the likely cause of the failure.  The components inside of that module are tiny, and many of them are designed to work with voltages like 1.2 volts or something like that.  There is protection built into them that depends on that ground wire in order to work.  Transient voltages are stray currents that may come into contact with one of the conductors coming from the module.  They could be anything from lightning to the static charge in your body.  I worked on this kind of stuff for years, and we had to use all sorts of grounding protection when anywhere near it.  We wore a wrist strap with a metal contact touching the skin, and had to clip it to a grounding post before touching the equipment.  The reason for this is the static electricity in your body could be upwards of 15,000 volts, and those little 1.2 volt components don't handle that very well.  The module you have is probably sealed in epoxy because of the harsh environment, which makes it impossible to repair.  Before you install the new module, check the ground wires attached to the housing of the Accuset unit, then check the ones that connect it to the mill itself.  ALL of it must be electrically connected so it is all at the same potential.  When you get the new module, read and heed any warnings on the package.  Some of them are probably not as silly as they appear.
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Offline Old Hilly

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Re: lt40 super, Super expensive part! lol
« Reply #10 on: November 04, 2011, 03:50:11 AM »
Dan, I had totally forgotten the epoxy "Potting". I would guess that even if the components were not "potted", all the IC chips would have had their ID's ground off anyway, just to make repair really dificult or better still, impossible.
Static and transients will kill almost anything, given half a chance. :'(
When installing the new box, read the instructions :P. At least TWICE!
Dennis.

Online LeeB

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Re: lt40 super, Super expensive part! lol
« Reply #11 on: November 04, 2011, 09:52:55 AM »
I would think that after 15 years of ownership, if you haven't taken a big repair hit so far, you are doing good. I had to replace one of the boards in mine once and fried the new one as soon as I powered it up. Wasn't quite $700, but it was a big chunk of change. Part of ownership. No different than having your tranny fail on your truck. New one may last forever or just a few miles.
'98 LT40HDD/Lombardini, Case 580L, Cat D4C, JD 3032 tractor, JD 5410 tractor, Husky 346, 372 and 562XP's. Stihl MS180 and MS361, 1998 and 2006 3/4 Ton 5.9 Cummins 4x4's, 1989 Dodge D100 w/ 318, and a 1966 Chevy C60 w/ dump bed.

Offline sparks

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Re: lt40 super, Super expensive part! lol
« Reply #12 on: November 04, 2011, 03:46:36 PM »
Hi Guys,

Without getting too far down in the weeds, I would like to correct a couple of things on this thread.

The H-Bridge that is being talked about is protected from over-current and from transient voltage spikes, however, in some rare cases, the energy behind a transient produced in a system capable of running 450+ amp loads (hydraulic system) can be substantial and difficult to protect against. Large voltage spikes that have the potential to do damage are generally caused by loose connections in the high-current circuits, (i.e. hydraulics, battery, alternator, fuse block, etc.), but even then, it has to be just the right frequency with enough amplitude and energy behind it to do damage. A friend of mine recently had to replace his modem and network card on his computer due to transient voltage spikes, he runs a UPS and a surge protector and it still made its way into the system and fried the boards. We have thousands of these systems running in hundreds of countries with great success and although it is unfortunate when one does fail, overall, it is a solid performer.

Also, in response to a few comments about serviceability:

The H-bridge is a custom bridge developed by Wood-Mizer, unfortunately, you will not be able to find the bridge at Radio Shackif we could have bought it from them to do what we needed it to, then we would have. Old Hilly, we do not sand or grind the labels off anything to make it unserviceable.

DanG, your pretty much spot on with what you said, however, static electricity from your body wont be an issue with the sawmills unless you are removing the actual circuit boards from their enclosures and handling them directly, then, by all means, static electricity becomes an issue and precautions should be taken.

Hope this helps.

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Offline geraldhale

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Re: lt40 super, Super expensive part! lol
« Reply #13 on: November 06, 2011, 01:31:53 AM »
 Thanks for the replies
 the mill I have now I got new in 05 and yes I went threw the problem with accuset and replaced it with accuset2 in 08, it does help to know that there are a large number of mills out there with this same equipment and its not a wide spreed problem and wood mizer has told me there is a 90 warenty, I think I will replace this board and maybe several other parts that may be a problem area, I think Id feel better doing a little over kill with as many new parts to provide me piece of mind as my walet can afford! lol  It may have to wait untill after taxes and the holidays but that will give me a good excuse to run my big mill some? that is if I can get three or four of my buddies to come help me run it??? lol it will saw 10 times what the wood mizer will in a day but sometimes it can be 10 times the pain in the butt!! lol buddy help on weekends can get exspensive ;D
 One of the things I like best about my wood mizer is the way I have mine sit up I can load several logs on the log deck and saw 1000+ feet all by myself with the off belt and roll case droping the lumber onto a green chain, eat lunch and then stack it by myself!!!! maybe Im becoming a grumpy old man but I like not having to count on other people as much at this point in my life :D
lt40 super,Meadows edger,Weinig moulder,24" Rockwell planer, Salem mill,Cornell edger,Pop up end trim, Fulgum chipper, Baker resaw, hazledine pointer, Landen strapping machine, John deere 480B lift, Case W20 wheel loader.

Offline woodmills1

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Re: lt40 super, Super expensive part! lol
« Reply #14 on: November 06, 2011, 07:23:04 PM »
my 70 is original accuset 1  still workin though it does forget and need reboot once in awhile
James Mills,Lovely wife,collect old tools,vacuuming fool,36 bdft/hr,oak paper cutter,ebonic yooper rapper nauga seller, Blue Ox? its not fast, 2 cat family, LT70,edger, 375 bd ft/hr, we like Bob,free heat,no oil 12 years,big splitter, baked stuffed lobster, still cuttin the logs dere IAM

Offline spencerhenry

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Re: lt40 super, Super expensive part! lol
« Reply #15 on: December 09, 2011, 11:24:49 AM »
in a previous response to this post, i said that ever since i got accuset 2 i have had no problems. well today i am pretty *pithed off. was milling yesterday and i had a couple small issues with the mill like the water hose breaking in half, the water jug cracking, running out of fuel, and the occasional failure of the mill to head to go to the proper position.

well today i uncovered the mill, checked the oil, for the first time ever had to add half a quart. it was cold but not too cold, even so the i had to make 3 attempts to get it to start. it would fire right away, but then die. while letting the engine warm up, i tensioned the blade, started looking at what i needed to get done, and was going to add some windshield washer to the cracked tank that leaks it all out over night. then i go back to the control panel and it says "ERROR" and some other stuff. head wont go up or down. i call woodmizer and am instructed on how to check the problem. in the past the error would always go away on its own. i had contacted woodmizer in the past and they said to check connections, there were never any issues that i found with any of the connections. but this time the error stays on the screen. i get the frozen shut door open and after checking some voltages, he tells me that the 'h' bridge is bad, but that i also probably have a bad fuse block and that that is probably what killed the $700 'h' bridge. i believe he told me that the fuse block was another $150. i took the block out, and sure enough one of the bolts is black.
 my mill is almost 8 years old, but has only 1100 hours on it. it has had 3 batteries, 2 alternators, a couple hydraulic hoses, couple hydraulic fuses, blade guide rollers, 3 accuset 1 modules, 2 switches that control the hydraulic pump, 2 of the big fuses on the fuse block, 2 water jet hoses, 2 sets of water jet nozzles, and probably some other parts. the accuset 2 was replaced for free, i was told that there were several customers that had had numerous failures of the accuset 1 that were given the upgrade. i was told then that the problem was voltage issues. in the past i have taken all of the battery cables off, emery clothed them clean, reassembled with dielectric grease and tightened them. now here i am with a mill that doesnt work, wont work until i spend almost $1000, and then i can replace parts in the snow in temperatures that if am lucky will be in the 20's. BUT after all that, i have no assurance that the 'h' bridge wont crap out again. yesterday when i ran the mill out of fuel i had to crank it some while also flipping the litter "manual pump" to get it to start again, the guy at woodmizer told me that cranking longer than 10 seconds could have had an effect on the 'h' bridge.

 so let me ask others out there, does your diesel engine that cant be plugged in take more than 10 seconds to start when it is below zero? if cranking more than 10 seconds can kill a $700 part that is not related to the motor, what a piece of crap!

 so much for getting this milling job done while the weather is decent and daytime highs are expected to hit the 20's.

i need to charge more for my service, and mill products. the 'h' bridge replacement has cost me about $1.5 per hour of mill run time. add in the other parts and i could make more money working at walmart, and then i wouldnt have to roll around in the snow and cold to make nothing.

Offline terrifictimbersllc

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Re: lt40 super, Super expensive part! lol
« Reply #16 on: December 09, 2011, 02:20:42 PM »
Sorry to hear.  Overall things will work out.   Make sure your glow plug relay is working (12 V at the glow plug strip).  If not get a new one mine was $137.   ;D
DJ Hoover, Terrific Timbers LLC,  Mystic CT   2001 WM LT40SHDD (42HP Kubota, Accuset2, FAO's, Lubemizer, debarker, hydraulics everywhere), Peterson WPF 10-30 with chain slabber. Logrite fetching arch, WM BMS250 sharpener/BMT250 setter.

Offline Magic Smoke

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Re: lt40 super, Super expensive part! lol
« Reply #17 on: December 09, 2011, 07:59:20 PM »
spencerhenry,
You were told wrong, the solenoid that powers up the H-Bridge is turned on via the ACC terminal of the key switch, this terminal is not energized during a crank sequence... meaning the bridge isn't even powered up during cranking. Melt your starter down till your hearts content, it's not going to hurt the bridge.

Offline customsawyer

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Re: lt40 super, Super expensive part! lol
« Reply #18 on: December 11, 2011, 07:47:07 PM »
Spencerhenry if you are checking the oil for the first time there might be other things that you have over looked. ;D I am not trying to berate you but there is a certain amount of maintenance that must be done with any piece of equipment. I check the oil on my machines every time I crank them and several other things. 
Two LT70s and to much other support equipment to mention.
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Online ladylake

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Re: lt40 super, Super expensive part! lol
« Reply #19 on: December 11, 2011, 07:55:59 PM »

 This was the first time oil was added, not checked. Steve
Timberking B20 12000 hours +  Case75xt grapple + forks+8" snow bucket + dirt bucket   770 Oliver   Lots(too many) of chainsaws, Like the Echo saws and the Stihl and Husky     W5  Case loader   1  trailers  Wright sharpener     Dino setter Volvo MCT125c skid loader


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