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Sawmill Maintenance/Repairs

Started by Magicman, February 23, 2023, 04:25:03 PM

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Nebraska

Another engine option are ag power units used in irrigation systems especially common in this country. Lots of medium sized diesel engines running wells etc. 

Nebraska




I broke a link on my chain turner it was this old style ag chain used a big c clamp and big vise grips to get it started a few taps with the hammer and it was fixed. Went so quick I about forgot to take a picture. 

Nebraska


doc henderson

they make a tool, but it is not much help.  got to hold your teeth just right.  also, they make a masterlink with a pin and cotter key.  I have the same on my firewood conveyor.
Timber king 2000, 277c track loader, PJ 32 foot gooseneck, 1976 F700 state dump truck, JD 850 tractor.  2007 Chevy 3500HD dually, home built log splitter 18 horse 28 gpm with 5 inch cylinder and 32 inch split range with conveyor powered by a 12 volt tarp motor

TimW

Isuzu 3KNDA is made by Yanmar and is suppose to be my engine number, but a different dash.

I hope it will be main electronic controller. Will find out tomorrow if they can get a loaner.

I explained it to my daughter over lunch today.  I told her re engine is doable, but not fast.  I could wind up spending lots of money on a used engine to mod it to fit, only to have it fail.  I could do it myself, I know, but the time factor is the problem.  I thrive on projects like this, but my retirement time  frame doesn't have a long time engineering project in it. Nor do I need another project.  This is why it is at a dealer now.
Besides, the logs I have on hand are getting long in the tooth.

 She told me to just buy a new plug and play Yanmar.  That way I would have a spare engine, and not a frankensteined power plant.

Mahindra 6520 4WD with loader/backhoe and a Caterpiller E70 Excavator.  My mill is a Woodmizer LT40HD Wide 35hp Yanmar Diesel. An old Lull 644D-34 called Bull

TimW

I have searched diligently , online, to find another Yanmar sputtering RPMs.  I have not found any.  Found alot of Yanmar tractors losing power, which is usually corrected with cleaning the fuel pickup screen and being proactive with fuel cleaniness.  Also clogged fuel filters.
If anyone finds any sputtering Yanmar writeups, please post a link here.  I would appreciate it.

Kinda reminds me of Mom and Dad's used 1970 Galaxie 500.  That thing was a lemon.  Everytime we got something fixed, something else would go wrong.  Dad got rid of it and bought another Mercury.

Also my 2003 Ram 3500.  Was having a cruise control problem.  It kept surging MPHs with cruise on.  It was another thing that wouldn't show up on fault codes.  Mechanic said it was the transmission going out.  I wanted a beefed up tranny for towing to handle 100 extra hp, so I said okay.  It didn't fix it.  We tried all kinds of electronic replacement parts, with no help.  Up at a fish farm in Centerville one day, I put it in park and heard.....pop.  It started rolling. I tried park again and it rolled.  Put it in neutral with the park brake on and bought my fish.  Next day the mechanic was changing the tranny park cable.  That cured my cruise control surging.
So it is not just Yanmars.

I think My Yanmar was setup wrong at Woodmizer.  It had the wrong drive belt installed and the brake was maxxed out. My rear bearing support set screws were not tightened from the factory and that cause it to start throwing alternator belts.  The Yanmar's alternator was wired in, along with Woodmizer's alternator.  WM says two alternators wired in caused Accuset problems.  But I don't have accuset. So was else has that screwed up?  Woodmizer leaves the Yanmar alternator on instead of designing and adding another idler pulley.  So is My Yanmar a lemon? I will know if the controller doesn't fix it.
Mahindra 6520 4WD with loader/backhoe and a Caterpiller E70 Excavator.  My mill is a Woodmizer LT40HD Wide 35hp Yanmar Diesel. An old Lull 644D-34 called Bull

SawyerTed

@TimW two things I've learned that can cause sputtering/low power (probably not the only ones) are diesel return line problems and changing the injectors without re-inputting the pressure parameters in the ECU.  

We had a clogged/impeded return line on a tractor with a Yanmar.  During the different attempts to fix it, a "mechanic" (loose term) changed injectors.  Once the ECU had fresh parameters for the injectors, it ran fine.
Woodmizer LT50, WM BMS 250, WM BMT 250, Kubota MX5100, IH McCormick Farmall 140, Husqvarna 372XP, Husqvarna 455 Rancher

TimW

My low pressure fuel system has been bypassed once and the fuel injectors installed are original.
Return fuel lines have been checked.  All with no help.
Mahindra 6520 4WD with loader/backhoe and a Caterpiller E70 Excavator.  My mill is a Woodmizer LT40HD Wide 35hp Yanmar Diesel. An old Lull 644D-34 called Bull

TimW

Quote from: SawyerTed on October 07, 2024, 10:16:37 AM@TimW two things I've learned that can cause sputtering/low power (probably not the only ones) are diesel return line problems and changing the injectors without re-inputting the pressure parameters in the ECU. 

We had a clogged/impeded return line on a tractor with a Yanmar.  During the different attempts to fix it, a "mechanic" (loose term) changed injectors.  Once the ECU had fresh parameters for the injectors, it ran fine.

Did any of these issues throw fault codes?
Mahindra 6520 4WD with loader/backhoe and a Caterpiller E70 Excavator.  My mill is a Woodmizer LT40HD Wide 35hp Yanmar Diesel. An old Lull 644D-34 called Bull

SawyerTed

Woodmizer LT50, WM BMS 250, WM BMT 250, Kubota MX5100, IH McCormick Farmall 140, Husqvarna 372XP, Husqvarna 455 Rancher

SawyerTed

Those might not be the solution but certainly low cost items to eliminate as possibles.  
Woodmizer LT50, WM BMS 250, WM BMT 250, Kubota MX5100, IH McCormick Farmall 140, Husqvarna 372XP, Husqvarna 455 Rancher

Magicman

Tim, I keep going back and kinda remembering that your engine woes began with contaminated fuel.  ??

I know that when that happens with today's truck engines, the entire fuel system has to be replaced to rid it of metal shavings/particles.  The rebuild can easily be in the $12-$14K range.
Knothole Sawmill, LLC     '98 Wood-Mizer LT40SuperHydraulic   WM Million BF Club Member   WM Pro Sawyer Network

It's Weird being the Same Age as Old People

Never allow your "need" to make money to exceed your "desire" to provide quality service.....The Magicman

WV Sawmiller

  I mentioned it in a sister thread but my mill has been throwing the drive belts. I can't find anything out of alignment or other reason to explain this issue. The mill has a little over 1500 hours and I've never had this problem before.

  Looking at the design and talking with WM customer service it turns out if you are facing the tongue on my mill and looking at the drive side there is a little cover over the drive wheel at about 11:00 and a "belt keeper" (a little flat piece of metal with a smooth prong about 2" long that bolts to the back of the cover and rotates/pivots to within about 1/8" of the drive wheel once the new belt is installed) at about 8:00 on the mill that keeps the belt in place. By design there is nothing between 11:00 and 8:00 to keep the belt in place and only tension seems to be required but when I released the tension my belt would flop wildly and come off the wheel apparently about 2:00.

  I took my mill to my small engine guy (who also owns and uses a small personal mill - not a WM but he is familiar with sawing and related issues - and he did not see any alignment or other issues either so he suggested making another belt keeper and put it up about 2:00. He took about a 3" piece of angle iron, welded a long 5/16" bolt to it, cut off the thread leaving a smooth shaft about 2" long, drilled a 5/16" hole in one end then drilled a hole in the back side of the mill cover and bolted it in place. With the belt tensioned he pivoted it to about 1/8" from the blet so it does not touch in operation and rightened it securely. We tested it without then with a band on and it works perfectly.

  I can't say it was a design flaw but I can say this is a simple design improvement that seems to have solved my belt throwing issue. I sawed a couple hours yesterday starting and stopping the belt many times and never threw a belt. There is no way it can throw one now.
Howard Green
WM LT35HDG25(2015) , 2011 4WD F150 Ford Lariat PU, Kawasaki 650 ATV, Stihl 440 Chainsaw, homemade logging arch (w/custom built rear log dolly), JD 750 w/4' wide Bushhog brand FEL

Dad always said "You can shear a sheep a bunch of times but you can only skin him once

Magicman

I was wondering when you release the tension, is something going too far or further than normal and creating too much slack?
Knothole Sawmill, LLC     '98 Wood-Mizer LT40SuperHydraulic   WM Million BF Club Member   WM Pro Sawyer Network

It's Weird being the Same Age as Old People

Never allow your "need" to make money to exceed your "desire" to provide quality service.....The Magicman

WV Sawmiller

   Very good question and that would explain the extra slack but I have not noticed anything different. I just push up on the tension arm and it can only go as far as the adjustment bolt below will allow it to go and that seems as before.
Howard Green
WM LT35HDG25(2015) , 2011 4WD F150 Ford Lariat PU, Kawasaki 650 ATV, Stihl 440 Chainsaw, homemade logging arch (w/custom built rear log dolly), JD 750 w/4' wide Bushhog brand FEL

Dad always said "You can shear a sheep a bunch of times but you can only skin him once

TimW

Ted, 
Can you describe the diesel return line problems and fix?
Mahindra 6520 4WD with loader/backhoe and a Caterpiller E70 Excavator.  My mill is a Woodmizer LT40HD Wide 35hp Yanmar Diesel. An old Lull 644D-34 called Bull

TimW

Quote from: Magicman on October 09, 2024, 09:15:10 AMTim, I keep going back and kinda remembering that your engine woes began with contaminated fuel.  ??

I know that when that happens with today's truck engines, the entire fuel system has to be replaced to rid it of metal shavings/particles.  The rebuild can easily be in the $12-$14K range.
The original intermittent problem has grown to be continuous.
When I first took the mill to the dealer, it was under warranty and they found water in the fuel.  The intermittent problem didn't happen again for a couple of years, when out of warranty.
When it happened, I would drain the tank and find a little water, change filters and purge the lines and continue sawing.  I even went to doing all that and getting fresh pump gas, when it went continuous with no help.

Every time I sump the storage tank.............no water.
Mahindra 6520 4WD with loader/backhoe and a Caterpiller E70 Excavator.  My mill is a Woodmizer LT40HD Wide 35hp Yanmar Diesel. An old Lull 644D-34 called Bull

Magicman

But if you still have metal shavings/flakes, etc floating around somewhere in the system...... smiley_headscratch

They do a complete change-out on trucks because if one component is replaced and not all at the same time, that component could become contaminated/compromised by the not replaced components elsewhere in the fuel system..

 
Knothole Sawmill, LLC     '98 Wood-Mizer LT40SuperHydraulic   WM Million BF Club Member   WM Pro Sawyer Network

It's Weird being the Same Age as Old People

Never allow your "need" to make money to exceed your "desire" to provide quality service.....The Magicman

SawyerTed

Quote from: TimW on October 09, 2024, 12:57:37 PMTed,
Can you describe the diesel return line problems and fix?
It was a clogged/restricted return line end at the tank.  Apparently, a glob of black algae had grown in the tank, it somehow got into the end of the return line about 2" at the tank.  
Woodmizer LT50, WM BMS 250, WM BMT 250, Kubota MX5100, IH McCormick Farmall 140, Husqvarna 372XP, Husqvarna 455 Rancher

TimW

But metal shavings/flakes  from what?  All the fuel system components that could make flakes tested good.  The engine ran so good for so long (Just short of 3 years)  between sputtering I can not see it being shavings/flakes contamination.

Back in May or June, when I changed fuel filters, I cut the old one open and couldn't find anything in it.
Mahindra 6520 4WD with loader/backhoe and a Caterpiller E70 Excavator.  My mill is a Woodmizer LT40HD Wide 35hp Yanmar Diesel. An old Lull 644D-34 called Bull

TimW

I've always said it was an electric issue.  Now I'm thinking it is an electronic issue.  WM Dennis just told me the ECU can be sent to Yanmar for testing.  I texted the engine shop to do this.
Mahindra 6520 4WD with loader/backhoe and a Caterpiller E70 Excavator.  My mill is a Woodmizer LT40HD Wide 35hp Yanmar Diesel. An old Lull 644D-34 called Bull

barbender

When it isn't throwing a fault code, it makes me suspect you have a fuel issue as well. For instance, my common rail Duramax diesel in one of my pickups was running like garbage. It was low on power, and once in a while it would die when driving slow. Then I would have to use the manual primer to get it going. So I knew I had a fuel restriction or it was sucking air into a fuel line.

 I replaced some fuel lines and added an electric fuel pump.

 It never once threw a code of any sort.

 The only fuel or air related issues I've seen throw a code on electronic controlled diesels are water in fuel, and an air filter restriction. Any electrical fault has always thrown a code immediately, however.

 Fuel is where I'd be looking really hard.
Too many irons in the fire

Magicman

Quote from: TimW on October 09, 2024, 02:23:47 PMBut metal shavings/flakes  from what? 
From the injector pumps.  Water in the fuel has no lubrication so you have metal on metal. 

The water contamination in the fuel catastrophic failure cost my son $12K+.  He add the filter kit on his F350, @ $3-$4K so bad fuel only cost him a new filter kit ($3-$4K).

Bad fuel cost me a Lombardini sawmill engine.  :veryangry:
Knothole Sawmill, LLC     '98 Wood-Mizer LT40SuperHydraulic   WM Million BF Club Member   WM Pro Sawyer Network

It's Weird being the Same Age as Old People

Never allow your "need" to make money to exceed your "desire" to provide quality service.....The Magicman

TimW

The entire fuel system, except hard lines have been changed with no help. This problem first showed up in 2021.  I didn't have it act up again until June of this year.  So about 3 years with no issues.  Would a fuel related issue stop for almost 3 years of smooth running and then flare up again.........with the filters changed, the lines purged, and the tank drained and refilled with fresh pump diesel, still sputtering?
The dealer had 42 hours labor troubleshooting the fuel system with no help, back in June and July.

Because it has no fault codes does not mean something Isn't wrong with the electrical.  I have been going through every fault code in the troubleshooting manual and for every code..........they list ECU internal circuit failure as possible cause.  Now, who is to say the ECU isn't bad and that circuit failure is also in the fault code reporting circuit?

Y'all reference trucks so I will.  My 2003 RAM/Cummins was having issues with the Mass Air Sensor wiring.  They fixed that but told me somehow the main engine computer's program was corrupted.  They had to put a new MEC in and upload the program into it from Dodge.
Mahindra 6520 4WD with loader/backhoe and a Caterpiller E70 Excavator.  My mill is a Woodmizer LT40HD Wide 35hp Yanmar Diesel. An old Lull 644D-34 called Bull

TimW

My injectors were tested and found good.  We changed the high pressure pump and no help.  We put new injectors in and no help.  We did all of that and then they changed the cam and crank sensor.  I bought it home and sawed 12.2 hours before it sputtered again. 
Sputtering now is constant.  The 12.2 hours running smooth proved it was intermittent and has escalated  to, now, constant sputtering.

If it was the fuel system causing the sputtering, how did it run smooth for 12.2 hours?
Only electrical and/or electronic issues can do that.
Mahindra 6520 4WD with loader/backhoe and a Caterpiller E70 Excavator.  My mill is a Woodmizer LT40HD Wide 35hp Yanmar Diesel. An old Lull 644D-34 called Bull

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