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Author Topic: Wheel belts coming apart.  (Read 1273 times)

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Offline irvi00

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Wheel belts coming apart.
« on: November 02, 2017, 07:30:43 pm »
First off, I tried to search and couldn't answer my question. The pulley belts that came new on my WM lt50 lasted almost 300 hours. Since then they have been coming apart in about 10 to 15 hours. These are wm belts. Last set maybe 5 hours. The only thing I've done different is spray the blade with wd40 before I take it off to clean it up. Is it as simple as the wd40 or do I have an underlying problem?

Offline Chuck White

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Re: Wheel belts coming apart.
« Reply #1 on: November 02, 2017, 07:41:11 pm »
Without a doubt, I would be calling Wood-Mizer!
~Chuck~
Retired USAF (1989), Retired School Bus Driver (2012), and now a Mobile Sawyer
1995 Wood-Mizer LT40HDG2425 Kohler - Shingle & LapSider
Cooks Cat Claw Sharpener, 4-foot Logrite cant hook.
Basic mechanical skills are all that's required to maintain the Wood-Mizer.
I LOVE MY SAWMILL

Offline POSTONLT40HD

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Re: Wheel belts coming apart.
« Reply #2 on: November 02, 2017, 08:18:17 pm »
Anything with petroleum in it will surely take its toil on a belt.
I'm not saying this is the problem. I clean my blades every once in a while with a spray of diesel.
I can tell my belts will become a little mushy from diesel over time. I change my belts about every 500-700 hours.
However, I have never had a belt separate.
I'm thinking......

Offline Magicman

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Re: Wheel belts coming apart.
« Reply #3 on: November 02, 2017, 08:31:47 pm »
Mine never gets anything except a wire brush or the brush scraper tip.
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 irvi00

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Re: Wheel belts coming apart.
« Reply #4 on: November 02, 2017, 08:52:18 pm »
The first set that came with the mill were great. 300 hours and they were fine. A broken blade took them out. Two sets since then. The backs are coming off and causing imbalance. Today one just shredded up it's back. This is getting expensive quick. I've stopped with the wd40. But just to be sure, could there be another problem?

Offline Magicman

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Re: Wheel belts coming apart.
« Reply #5 on: November 02, 2017, 09:36:46 pm »
Be sure to contact WM because there may be a Mfg. defect that needs to be identified.  They may want those old belts.
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 irvi00

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Re: Wheel belts coming apart.
« Reply #6 on: November 02, 2017, 10:03:49 pm »
Be sure to contact WM because there may be a Mfg. defect that needs to be identified.  They may want those old belts.

Definitely will do that. I checked a lot of things and mill looks to be in alignment. Bearings all tight, guides are good. The belts are in the grooves and no buildup underneath. Could the wd40 cause the breakdown?

Offline Magicman

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Re: Wheel belts coming apart.
« Reply #7 on: November 02, 2017, 10:15:59 pm »
I have no idea because I have never sprayed WD40 or anything else on any belts.
Knothole Sawmill, LLC     '98 Wood-Mizer LT40SuperHydraulic   WM Million BF Club Member   WM Pro Sawyer Network

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Offline Coltbodi

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Re: Wheel belts coming apart.
« Reply #8 on: November 02, 2017, 10:16:38 pm »
I doubt it's the wd40 since lots of people including me run straight diesel on there blade for lube. Maybe it's the way you are putting them on. If they where doing well from the factory and now are shredding the only difference (assuming none of the alignmeants moved) are who is installing them. If it's not that I would guess that it's the way the blade is running on the belt, if it's running to far forward than the rear of the blade could be digging into the crown of the belt. Is it both belts?
If I can't fix it, I don't want it.
Timberking 1600 with lots of mods, a 65hp mahindra with a front end loader, a welding shop, and sugarcane mill from 1890 for making syrup

Offline Magicman

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Re: Wheel belts coming apart.
« Reply #9 on: November 02, 2017, 10:30:26 pm »
There is no crown on WM B57 belts which I assume irvi00 is using.  They are flat.  They run loose so there is really no "installing".  Just slip them over the bandwheels.

I am leaning toward a bad batch of belts, but then, I have no idea what WD40 would do??
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 Coltbodi

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Re: Wheel belts coming apart.
« Reply #10 on: November 02, 2017, 10:55:53 pm »
Oh ok, much different than the ones on a timberking. I'd have to agree with you about the belts on that note. Doesn't seem like it could be anything else.
If I can't fix it, I don't want it.
Timberking 1600 with lots of mods, a 65hp mahindra with a front end loader, a welding shop, and sugarcane mill from 1890 for making syrup

Offline irvi00

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Re: Wheel belts coming apart.
« Reply #11 on: November 03, 2017, 08:03:57 am »
There is no crown on WM B57 belts which I assume irvi00 is using.  They are flat.  They run loose so there is really no "installing".  Just slip them over the bandwheels.

I am leaning toward a bad batch of belts, but then, I have no idea what WD40 would do??

Yup. Woodmizer b57 belts. Both sets that came apart were ordered at the same time so it's very possible they could be faulty. A new set should be here today so I'll try one more time. (With no wd40!)

Offline armechanic

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Re: Wheel belts coming apart.
« Reply #12 on: November 03, 2017, 11:15:50 am »
A few years ago, I installed an upgrade to my 1988 LT 40 which included larger drive pulley on engine and new belts on the blade wheels which are very tight, I mean tight. They have worked real well. I seen the comment about loose belts reminded me about mine.
1989 Lt 40, D6C CAT, Home made wood processer in progress.

Offline irvi00

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Re: Wheel belts coming apart.
« Reply #13 on: November 05, 2017, 07:54:07 am »


Just to show yall what I'm dealing with. @ 8 hours on these belts. Both belts looked the same. Put some new ones on Friday evening and sawed about an hour Saturday morning. So far so good. Will find out more tomorrow when I fire off for a full day. Will no longer use wd40 on the belts and see if that makes a difference. I also watched the blade run for a while and it was tracking properly on the wheels.

Offline terrifictimbersllc

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Re: Wheel belts coming apart.
« Reply #14 on: November 05, 2017, 10:28:35 am »
I've never seen anything like that in 3700 hours of sawing. My belts go on oily he from the sharpening setting processbut that gets cleaned off within a minute or two of sawing.  Then all the belts see is cascade in water. Maybe you are loading up and pressing WD-40 into  the belts before taking the band off. I would  stop that practice and wipe the band after taking it off with WD-40 instead if you want to. In any case like mentioned above there must be something different between  WD-40 and diesel if that is causing your problem because others use diesel here.
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 irvi00

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Re: Wheel belts coming apart.
« Reply #15 on: November 05, 2017, 10:32:58 am »
That was my thought too. I was spraying the blade as it ran under tension just before taking it off. So possibly squeezing the wd40 into the belt. Won't be doing that any more. (But it sure cleaned the blade up nicely!) I'll know more by Tuesday if it makes a difference. New set of belts and absolutely no wd40.

Offline LeeB

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Re: Wheel belts coming apart.
« Reply #16 on: November 05, 2017, 09:09:17 pm »
Did you get the same problem with more than one blade?
'98 LT40HDD/Lombardini, Case 580L, Cat D4C, Ford 851 tractor, JD 3032 tractor, Husky 346, 372 and 562XP's. Stihl MS180 and MS361, 1998 and 2006 3/4 Ton and 2005 1 ton Dodge 5.9 Cummins 4x4's, 1989 Dodge D100 w/ 318, and a 1966 Chevy C60 w/ dump bed.

Offline irvi00

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Re: Wheel belts coming apart.
« Reply #17 on: November 05, 2017, 09:37:23 pm »
Did you get the same problem with more than one blade?

Yes. I go through 4 to 5 blades a day. Some are resharpened, some are new. It didn't seem to matter what I ran, they shredded anyway. Judgement time comes tomorrow. New belts, full day. Wish me luck!

Offline LeeB

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Re: Wheel belts coming apart.
« Reply #18 on: November 05, 2017, 10:29:23 pm »
How much tension are you running on the blade? Is it possible he blade is slipping and causing wear to the belt?
'98 LT40HDD/Lombardini, Case 580L, Cat D4C, Ford 851 tractor, JD 3032 tractor, Husky 346, 372 and 562XP's. Stihl MS180 and MS361, 1998 and 2006 3/4 Ton and 2005 1 ton Dodge 5.9 Cummins 4x4's, 1989 Dodge D100 w/ 318, and a 1966 Chevy C60 w/ dump bed.

Offline irvi00

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Re: Wheel belts coming apart.
« Reply #19 on: November 05, 2017, 10:32:45 pm »
Running at 3000 psi, the specified tension that WM calls for. I haven't heard any slippage. This is a 3 phase electric mill.