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Author Topic: Cam follower bearings  (Read 651 times)

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Offline Dan_Shade

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Cam follower bearings
« on: January 10, 2020, 10:14:40 PM »
I thought changing these was in the manual,but it isn't...

I seem to remember a trick where you prop the outboard edge of the saw head up with a board or can't hook.

Can someone refresh my memory? 
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 WV Sawmiller

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Re: Cam follower bearings
« Reply #1 on: January 10, 2020, 10:25:36 PM »
   I think the LT40 is different than the LT35 but be very sure you have the head secured before you remove the cam follower. On the LT35 that bottom cam follower bearing is the only thing holding the head to the bottom rail. Good luck and be very careful.
Howard Green
WM LT35HDG25(2015) , 2009 4wd Dodge PU, Kawasaki 650 ATV, Sthil 440 & 441, 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"

Offline Chuck White

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Re: Cam follower bearings
« Reply #2 on: January 11, 2020, 06:32:49 AM »
Forestry Forum member @Bibbyman covered the procedure very well in "Useful Sawmill Mods"

Go here:      https://forestryforum.com/board/index.php/topic,7789.0.html

I changed all 6 of them on my mill in about 2 hours, by myself!

Change them "One at a Time", for safety!
~Chuck~
Retired USAF 1989, Retired School Bus Driver 2012, now semi-retired Mobile Sawyer
1995 Wood-Mizer LT40HDG25 Kohler - Cooks Cat Claw Sharpener and single-tooth setter, 4-foot Logrite cant hook.
Basic mechanical skills are all that's required to maintain a Wood-Mizer

Online Magicman

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Re: Cam follower bearings
« Reply #3 on: January 11, 2020, 07:54:22 AM »
Dan, you use the prop when changing the lower cam followers. 

For the top, use a pry bar to lift the head at that point and use a thick screwdriver, etc. as a wedge to hold it up.  You only need to lift it high enough to turn the roller which is not much.
Knothole Sawmill, LLC     '98 Wood-Mizer LT40SuperHydraulic   WM Million BF Club Member   WM Pro Sawyer Network

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

Offline Dan_Shade

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Re: Cam follower bearings
« Reply #4 on: January 11, 2020, 02:49:44 PM »
Thanks for the info. 

I've been looking at them this afternoon, they all move freely, but sometimes the head feels "bumpy" when moving forward or gigging back.

I have been having some issues with the feed, tightening the belt will make it go a bit better. 
I've been sawing a lot of large poplar lately, going through a 20+ inch cant was really taxing the feed.

I also didn't have the frame quite level, the loader side was slightly up hill.  Not sure if that was making it worse or not. 
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 donbj

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Re: Cam follower bearings
« Reply #5 on: January 11, 2020, 02:58:17 PM »
Check your chain. It may have some links seizing up and that will cause that as well, or junk caught in the chain
Woodmizer LT40HDG24. John Deere 5300 4WD with Loader/Forks. Husky 262xp. Jonsered 2065

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Re: Cam follower bearings
« Reply #6 on: January 11, 2020, 04:59:54 PM »
Also be absolutely sure that all of the power feed bearings are turning smoothly.  A "too tight" power feed chain will destroy those bearings.
Knothole Sawmill, LLC     '98 Wood-Mizer LT40SuperHydraulic   WM Million BF Club Member   WM Pro Sawyer Network

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Offline Dan_Shade

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Re: Cam follower bearings
« Reply #7 on: January 11, 2020, 10:12:31 PM »
How do you change these? 



 
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.

Online Magicman

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Re: Cam follower bearings
« Reply #8 on: January 11, 2020, 10:20:07 PM »
That's much different from mine, but I would say take the center bolt out to remove the entire assembly ??
Knothole Sawmill, LLC     '98 Wood-Mizer LT40SuperHydraulic   WM Million BF Club Member   WM Pro Sawyer Network

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

Offline Dan_Shade

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Re: Cam follower bearings
« Reply #9 on: January 11, 2020, 10:24:41 PM »
This is the one on the other side.  (the end opposite of the hitch)





 

 
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 WV Sawmiller

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Re: Cam follower bearings
« Reply #10 on: January 11, 2020, 10:33:14 PM »
   If you do what is holding the head on to the frame? Check that very carefully and make sure the head is secured. Also don't raise the head any higher than you have to to help keep it from being more unstable. I think the instructions also warn to chain the head to a sturdy structure before starting.

   I did not pay attention to those cautions and I dropped the whole head unit off mine which is a very traumatic and a very dangerous experience.

   As I remember there is a hex socket in the shaft you can use to help loosen/tighten the assembly if it is the same as mine. I did not use one the last time I changed mine but I suspect an impact wrench would have been very helpful.

   The next time I change one I will be working from the rear of the mill so I don't have to thread so much chain over the sprocket too. 
Howard Green
WM LT35HDG25(2015) , 2009 4wd Dodge PU, Kawasaki 650 ATV, Sthil 440 & 441, 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"

Offline jcbrotz

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Re: Cam follower bearings
« Reply #11 on: January 12, 2020, 05:17:18 AM »
How do you change these?


(Image hidden from quote, click to view.)

take a wedge and drive it lightly in the end that will raise the rollers enough to remove the weight and unbolt the center bolt and remove and replace the rollers then reinstall.
2004 woodmizer lt40hd 33hp kubota, Cat 262B skidsteer and way to many tractors to list. www.Brotzmanswoodworks.com and www.Brotzmanscenturyfarm.com

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Re: Cam follower bearings
« Reply #12 on: January 12, 2020, 06:23:30 AM »
As I remember there is a hex socket in the shaft you can use to help loosen/tighten the assembly if it is the same as mine.
Absolutely.  The cam follower has a hex socket head, so hold the nut and use an Allen wrench or a hex driver to remove it.
Knothole Sawmill, LLC     '98 Wood-Mizer LT40SuperHydraulic   WM Million BF Club Member   WM Pro Sawyer Network

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

Offline jb616

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Re: Cam follower bearings
« Reply #13 on: January 12, 2020, 11:06:16 AM »
Forestry Forum member @Bibbyman covered the procedure very well in "Useful Sawmill Mods"

Go here:      https://forestryforum.com/board/index.php/topic,7789.0.html

I changed all 6 of them on my mill in about 2 hours, by myself!

Change them "One at a Time", for safety!
I learned the "One at a Time" the hard way....still have all my limbs but the engine cherry picker in the corner of the garage came in handy... >:( > :-\


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