The Forestry Forum is sponsored in part by:

iDRY Vacuum Kilns

SPACE AVAILABLE


Forestry Forum
Sponsored by:


TimberKing Sawmills



Toll Free 1-800-582-0470

LogRite Tools



Norwood Industries Inc.




Your source for Portable Sawmills, Edgers, Resaws, Sharpeners, Setters, Bandsaw Blades and Sawmill Parts

EZ Boardwalk Sawmills. More Saw For Less Money!



Woodland Sawmills

Peterson Swingmills

SPACE AVAILABLE
Turbosawmill

Michigan Firewood, your BRUTE FORCE Authorized Dealer

Baker Products

ECHO-Bearcat

iDRY Wood Lumber Vacuum Drying for everyon

Nyle Kiln Dry Systems

Chainsawr, The Worlds Largest Inventory of Chainsaw Parts

Smith Sawmill Service



Author Topic: Power feed LT 40 stopped moving forward?  (Read 1241 times)

0 Members and 1 Guest are viewing this topic.

Offline richhiway

  • Senior Member x2
  • *****
  • Posts: 1165
  • Age: 63
  • Location: Monitcello and North Hudson,NY
  • Gender: Male
  • Rich
    • Share Post
Power feed LT 40 stopped moving forward?
« on: September 06, 2023, 07:25:04 PM »
A few times today the power feed going forward stopped working. It seemed to work again after I shut the mill off and restarted it. It worked fine in reverse. It did it a few times then worked the rest of the day. It is a LT 40 with simple set. 200 hours. I replaced the pentometer about 150 hrs ago, the knob is tight. No binding, belt tight. Motor was not even warm to the touch. Drum switch is lubed and looks OK. No loose wires I could see. 

Any ideas?
Woodmizer LT 40
New Holland 35 hp tractor
Stihl Chainsaws

Offline SawyerTed

  • Senior Member x2
  • *****
  • Posts: 3977
  • Age: 61
  • Location: Germanton, NC
  • Gender: Male
    • Share Post
Re: Power feed LT 40 stopped moving forward?
« Reply #1 on: September 06, 2023, 07:31:17 PM »
Check the brushes in the motor.  
Woodmizer LT50, WM BMS 250, WM BMT 250, Kubota MX5100, IH McCormick Farmall 140, Husqvarna 372XP, Husqvarna 455 Rancher

Offline GAB

  • Senior Member x2
  • *****
  • Posts: 2514
  • Age: 75
  • Location: Charlotte, VT
  • Gender: Male
    • Share Post
Re: Power feed LT 40 stopped moving forward?
« Reply #2 on: September 06, 2023, 07:44:09 PM »
richhiway:
The next time it happens back up about a foot and check to see if there is bark on the drive chain that interfered with the drive sprocket's travel.  I have had that happen numerous times especially when sawing cherry.  If that is the case get your pocket knife out and remove the offending bark and continue sawing.
The first time it happened to me I forced it and I believe it is what cost me a circuit board.
If your problem is something else I sure would appreciate knowing.
GAB
W-M LT40HDD34, SLR, JD 420, JD 950w/loader and Woods backhoe, V3507 Fransguard winch, Cordwood Saw, 18' flat bed trailer, and other toys.

Offline Dan_Shade

  • Senior Member x2
  • *****
  • Posts: 5956
  • Location: Lexington Park, Maryland
  • Gender: Male
  • I don't want to edit my profile!
    • Share Post
    • Shade Custom Sawing
Re: Power feed LT 40 stopped moving forward?
« Reply #3 on: September 06, 2023, 08:02:04 PM »
I had to replace a feed module a few years ago. 

https://forestryforum.com/board/index.php?topic=60110.0#msg878583

Lots of troubleshooting info in the thread link above. 
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 Crossroads

  • Senior Member x2
  • *****
  • Posts: 2204
  • Age: 53
  • Location: Plummer Idaho
  • Gender: Male
  • letís make some sawdust
    • Share Post
    • K Bales Enterprises llc
Re: Power feed LT 40 stopped moving forward?
« Reply #4 on: September 06, 2023, 10:22:53 PM »
I agree with Dan, the power feed control module could be on the fritz. If you end up replacing it, check the diode as well, if its bad, youíll smoke the new PFCM. Once the smoke leaves, you canít put it backÖ
With the right fulcrum and enough leverage, you can move the world!

2017 LT40 wide, BMS250 and BMT250,036 stihl, 2001 Dodge 3500 5.9 Cummins, l8000 Ford dump truck, hr16 Terex excavator, Valley je 2x24 edger, Gehl ctl65 skid steer, JD350c dozer

Offline Sixacresand

  • Senior Member x2
  • *****
  • Posts: 2587
  • Age: 74
  • Location: Gordon, Georgia
  • Gender: Male
    • Share Post
Re: Power feed LT 40 stopped moving forward?
« Reply #5 on: September 07, 2023, 10:46:54 AM »
I recently replaced the potentiometer (the variable speed controller) which fixed mine.  
"Sometimes you can make more hay with less equipment if you just use your head."  Tom, Forestry Forum

Offline richhiway

  • Senior Member x2
  • *****
  • Posts: 1165
  • Age: 63
  • Location: Monitcello and North Hudson,NY
  • Gender: Male
  • Rich
    • Share Post
Re: Power feed LT 40 stopped moving forward?
« Reply #6 on: September 09, 2023, 08:09:07 AM »
I had to replace a feed module a few years ago.

https://forestryforum.com/board/index.php?topic=60110.0#msg878583

Lots of troubleshooting info in the thread link above.
TY for the link.
Woodmizer LT 40
New Holland 35 hp tractor
Stihl Chainsaws

Offline Bruno of NH

  • Senior Member x2
  • *****
  • Posts: 6024
  • Age: 57
  • Location: Springfield NH
  • Gender: Male
    • Share Post
Re: Power feed LT 40 stopped moving forward?
« Reply #7 on: September 09, 2023, 08:53:24 AM »
I just went through this last winter 
It might be the computer that's in the electrical box on the mast.
Lt 40 wide with 38hp gas and command controls , F350 4x4 dump and lot of contracting tools

Offline richhiway

  • Senior Member x2
  • *****
  • Posts: 1165
  • Age: 63
  • Location: Monitcello and North Hudson,NY
  • Gender: Male
  • Rich
    • Share Post
Re: Power feed LT 40 stopped moving forward?
« Reply #8 on: September 16, 2023, 02:22:08 PM »
I called Wood-Mizer and the tech guys were good but they said if it does not stop working completely it is hard to figure out. Because by the time you go to diagnosis it it would be working.
Today as soon as it stopped working in forward I pulled off the back cover and the over voltage light was on, on the control box. It soon went off and it started working again.

Nothing is binding and the alt is putting out 14.7 volts. When I was checking the alt. the two bolts that hold it the lower bracket to the mill were broken off so I have to drill these out and replace them. 

Any idea why the over voltage light is on. 
Woodmizer LT 40
New Holland 35 hp tractor
Stihl Chainsaws

Offline Magicman

  • Senior Member x2
  • *****
  • Posts: 45408
  • Age: 80
  • Location: Brookhaven, MS
  • Gender: Male
  • A "Traveling Man"
    • Share Post
    • Knothole Sawmill
Re: Power feed LT 40 stopped moving forward?
« Reply #9 on: September 16, 2023, 03:40:46 PM »
Did you review the link in Reply #3?
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

Offline Dan_Shade

  • Senior Member x2
  • *****
  • Posts: 5956
  • Location: Lexington Park, Maryland
  • Gender: Male
  • I don't want to edit my profile!
    • Share Post
    • Shade Custom Sawing
Re: Power feed LT 40 stopped moving forward?
« Reply #10 on: September 16, 2023, 04:09:02 PM »
Is it over voltage, or high current? 

Excessive current can be caused by making the motor work too hard.  You could have a bad bearing somewhere in the drive or a cam follower, it could be a moter problem, or even a wire that's damaged from a mouse or chaffing. 
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 SawyerTed

  • Senior Member x2
  • *****
  • Posts: 3977
  • Age: 61
  • Location: Germanton, NC
  • Gender: Male
    • Share Post
Re: Power feed LT 40 stopped moving forward?
« Reply #11 on: September 16, 2023, 08:11:08 PM »
Check the motor brushes.  Itís cheap and eliminates that as you work to the more complex.  

My LT 35 did the same thing.  Jerky movement forward but back just fine. 

Turned out to be brushes.  
Woodmizer LT50, WM BMS 250, WM BMT 250, Kubota MX5100, IH McCormick Farmall 140, Husqvarna 372XP, Husqvarna 455 Rancher

Offline Dad2FourWI

  • Senior Member
  • ****
  • Posts: 296
  • Location: Central Wisconsin
  • I love my job
    • Share Post
Re: Power feed LT 40 stopped moving forward?
« Reply #12 on: September 16, 2023, 09:00:38 PM »
I had very similar situation and I agree with Sixacresand.... I replaced the potentiometer and life is good again! Actually running better than for the last two years!!! LOL!

Hope you find out what the problem is and let us know when you do.

-Dad2FourWI

LT-40, LT-10, EG-50, Bobcat T750 CTL, Ford 1910 tractor, tree farmer

Offline richhiway

  • Senior Member x2
  • *****
  • Posts: 1165
  • Age: 63
  • Location: Monitcello and North Hudson,NY
  • Gender: Male
  • Rich
    • Share Post
Re: Power feed LT 40 stopped moving forward?
« Reply #13 on: September 17, 2023, 07:12:52 PM »
Did you review the link in Reply #3?
Yes I did Len, it was informative and I think the control module is propably  the culprit. I am going to call WM on Monday and let them know the OV light is on when it will not move forward and see what they say.
Thanks all.
Woodmizer LT 40
New Holland 35 hp tractor
Stihl Chainsaws

Offline richhiway

  • Senior Member x2
  • *****
  • Posts: 1165
  • Age: 63
  • Location: Monitcello and North Hudson,NY
  • Gender: Male
  • Rich
    • Share Post
Re: Power feed LT 40 stopped moving forward?
« Reply #14 on: September 29, 2023, 07:39:12 AM »
Spoke to WM in Hannibal NY they suggested the module was bad. Came from indy in two days. I was away for work so I have not installed it yet. Update as soon as I get it working. 
Woodmizer LT 40
New Holland 35 hp tractor
Stihl Chainsaws

Offline richhiway

  • Senior Member x2
  • *****
  • Posts: 1165
  • Age: 63
  • Location: Monitcello and North Hudson,NY
  • Gender: Male
  • Rich
    • Share Post
Re: Power feed LT 40 stopped moving forward?
« Reply #15 on: October 08, 2023, 04:02:02 PM »
 

 
It ended up being the control module. When I ordered it from Hannibal they said to check continuity from the blue wire to ground on the diode, it should only be one way. It was both ways hooked up but if you unhooked it it was one way. So I ordered a new one and it tested the same. Not sure I was testing it correctly. So I replaced both and used the mill for a few hours today and it is working good. Sorry it took so long but I have been busy at work.
Woodmizer LT 40
New Holland 35 hp tractor
Stihl Chainsaws

Offline OlJarhead

  • Senior Member x2
  • *****
  • Posts: 3066
  • Age: 58
  • Location: Pasco, Washington
  • Gender: Male
    • Share Post
Re: Power feed LT 40 stopped moving forward?
« Reply #16 on: October 09, 2023, 08:11:18 AM »
Glad you sorted it out!  I had the entire back panel on mine go but I think it was a nearby lightening strike that got me (and it was around 600hrs).  Tough to diagnose when they work, then they don't, then they do again!  Grrrr
2016 LT40HD26 and Mahindra 5010 W/FEL WM Hundred Thousand BF Club Member


Share via delicious Share via digg Share via facebook Share via linkedin Share via pinterest Share via reddit Share via stumble Share via tumblr Share via twitter Share via whatsapp

 


SPACE AVAILABLE

Powered by EzPortal