The Forestry Forum is sponsored in part by:

iDRY Vacuum Kilns


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!

STIHLDealers.com sponsored by Northeast STIHL


Woodland Sawmills

Peterson Swingmills

 KASCO SharpTech WoodMaxx Blades

Turbosawmill

Sawmill Exchange

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

Dynamic Green Products Inc.





Author Topic: Need help. Split taper bushing on LT40 band brake drum. Key or no key?  (Read 1190 times)

0 Members and 1 Guest are viewing this topic.

Offline Delawhere Jack

  • Senior Member x2
  • *****
  • Posts: 2080
  • Age: 52
  • Location: The First State, northern part
  • Gender: Male
  • I ought to know better.....
    • Share Post
Interesting failure on the mill today. Nearly finished, and the band brake drum fell off!  :o Draw bolts had sheared and the bushing worked loose. Got new holes drilled and tapped in the drum. The shaft is cut for a 3/8" key, and the bushing is the type that would except a key, but the drum itself has no keyway.

The parts manual does not list a key in this location, but I just wanted to confirm that I don't need one.

Mill is a 1995 LT40HDG24.

Thanks.

Online ladylake

  • Senior Member x2
  • *****
  • Posts: 5360
  • Age: 68
  • Location: grey eagle mn
  • Gender: Male
  • I need to edit my profile!
    • Share Post
 No key needed on a split tape just make sure to get it tight.   Steve
Timberking B20 15000 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     Suffolk  setter Volvo MCT125c skid loader

Offline paul case

  • Senior Member x2
  • *****
  • Posts: 4803
  • Age: 46
  • Location: extreeme northeast Oklahoma
  • Gender: Male
  • Original wearer of the PCM.
    • Share Post
Them are the kind you need to tighten and run a while and retighten.

PC
life is too short to be too serious. (some idiot)
2013 LT40SHE25 and Riehl edger,  WM 94 LT40 hd E15. Cut my sawing ''teeth'' on an EZ Boardwalk
sawing oak.hickory,ERC,walnut and almost anything else that shows up.
Don't get phylosophical with me. you will loose me for sure.
pc

Offline Delawhere Jack

  • Senior Member x2
  • *****
  • Posts: 2080
  • Age: 52
  • Location: The First State, northern part
  • Gender: Male
  • I ought to know better.....
    • Share Post
Thanks guys. I figured it didn't use one, but I wondered why they would use a bushing with a keyway and no key?

Off to fit it up. There was some minor galling on the shaft.... hope I can get it to lock up tight.

Online ladylake

  • Senior Member x2
  • *****
  • Posts: 5360
  • Age: 68
  • Location: grey eagle mn
  • Gender: Male
  • I need to edit my profile!
    • Share Post
 

 Most have 3 bolts. just keep going around tightening them until all are tight and as Paul  says recheck after running.  Steve
Timberking B20 15000 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     Suffolk  setter Volvo MCT125c skid loader

Offline Kbeitz

  • Senior Member x2
  • *****
  • Posts: 6950
  • Age: 68
  • Location: Millville, Pa.
  • Gender: Male
  • Never enough time...
    • Share Post
    • My Hobbies
I also take a small hammer and tap the bushing in while tightening it up.
Collector and builder of many things.
Love machine shop work
and Wood work shop work
And now a saw mill work

Offline Delawhere Jack

  • Senior Member x2
  • *****
  • Posts: 2080
  • Age: 52
  • Location: The First State, northern part
  • Gender: Male
  • I ought to know better.....
    • Share Post
It's going to need some more fixin'...  ::) The taper bore inside the drum galled to the point that the bushing bottoms out against the flange before it draws down tight on the shaft. I think I can mount the drum on a face plate in the lathe and cleanup the taper, then I'll face off the boss 100-200 thou and see if it will draw tight. The bushing looks good, but I'll order one from MSC just in case.

Looks like this may be grounds for a new thread on the forum.... Johnny saves the day with his lathe!  ;D

It may well take me half a day.... but I didn't have anything urgent to do tomorrow.. :)

Offline safdchief2

  • member
  • *
  • Posts: 14
  • Location: Bemidji & the Cities, Minnesota
  • Gender: Male
  • Like Jack Daniel's, I'm aging properly
    • Share Post
    • Deer Lake Sawmilling
I would urge "Caution" when snugging up the taper bushing. One persons 'snug' can be another persons 'too loose.' I was 'snugging' the taper bearing on the drive pulley and it caused the pulley wheel to crack!! That was a $200 fix for a new wheel. It took chatting with several folks at Woodmizer to find out the torque specs are only about 14 lbs. In all the manuals I have for my Harley's, Ford's, GMC's, Farmall's, etc., there are recommended torque specs. Sure would be nice if Woodmizer would include torque specs.
WM 1995 LT40HD OnanG24 - Farmall M - Selfmade 32" log arch - 2011 FLHTCU FFSE

Offline paul case

  • Senior Member x2
  • *****
  • Posts: 4803
  • Age: 46
  • Location: extreeme northeast Oklahoma
  • Gender: Male
  • Original wearer of the PCM.
    • Share Post
One of the most important things to do when tightening a taper lock bushing is to do it evenly. Tighten one bolt only to specs for tight and you will break something for sure. Only tighten each bolt like 1/4 turn at a time and go across from each other so it pulls in evenly. Very important.

PC
life is too short to be too serious. (some idiot)
2013 LT40SHE25 and Riehl edger,  WM 94 LT40 hd E15. Cut my sawing ''teeth'' on an EZ Boardwalk
sawing oak.hickory,ERC,walnut and almost anything else that shows up.
Don't get phylosophical with me. you will loose me for sure.
pc

Offline Delawhere Jack

  • Senior Member x2
  • *****
  • Posts: 2080
  • Age: 52
  • Location: The First State, northern part
  • Gender: Male
  • I ought to know better.....
    • Share Post
Thanks, I will use a torque wrench and alternate side to side as suggested.

My attempt to save the drum failed. It was galled out something terrible at the large dia of the taper. The bushing was barely making contact at the small end of the taper. There was not enough meat left to reclaim the bore.

Turns out Johnny could NOT save the day with his lathe..  :-\ At least I didn't waste too much time trying. New part due here Wed.

Offline MartyParsons

  • Senior Member x2
  • *****
  • Posts: 1863
  • Age: 56
  • Location: Shade Gap, Pennsylvania
  • Gender: Male
  • Wood-Mizer Service and sales PA, VA, MD, WV others
    • Share Post
Hello,
  There are a few designs, The later version has the pulley and drum all in one unit. The early design had two piece design. Everyone I had apart has a key. It does not show a key for the brake drum in the manual. It does show a key for the drive pulley.


Marty
A pessimist sees difficulty in every opportunity; an optimist sees opportunity in every difficulty. -Winston Churchill

Offline Delawhere Jack

  • Senior Member x2
  • *****
  • Posts: 2080
  • Age: 52
  • Location: The First State, northern part
  • Gender: Male
  • I ought to know better.....
    • Share Post
Hello,
  There are a few designs, The later version has the pulley and drum all in one unit. The early design had two piece design. Everyone I had apart has a key. It does not show a key for the brake drum in the manual. It does show a key for the drive pulley.


Marty

When I spoke with Doug at WM, he said the part available was updated in 1997 (?). Still just the brake drum alone, separate from the drive pulley. Maybe it is keyed, it would make sense. I'll find out Wed.


Offline Kbeitz

  • Senior Member x2
  • *****
  • Posts: 6950
  • Age: 68
  • Location: Millville, Pa.
  • Gender: Male
  • Never enough time...
    • Share Post
    • My Hobbies
If the hub was made by Browning then you could buy one with
a smaller hole.
Collector and builder of many things.
Love machine shop work
and Wood work shop work
And now a saw mill work


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

xx
lt40 brake band repair

Started by pineywoods on Sawmills and Milling

4 Replies
739 Views
Last post August 19, 2017, 11:56:35 PM
by Kbeitz
xx
Split taper sawing vs. full taper sawing???

Started by Piston on Sawmills and Milling

2 Replies
2584 Views
Last post July 02, 2010, 07:00:07 AM
by scsmith42
xx
WM split tapered bushing/drive sheave bolts sheared

Started by 47sawdust on Sawmills and Milling

8 Replies
1301 Views
Last post June 13, 2016, 11:26:23 AM
by sealark37
xx
Brake Drum Forge...Rat-Rod style!

Started by Rooster on General Board

18 Replies
4575 Views
Last post January 07, 2013, 11:45:29 AM
by Rooster
 


Powered by EzPortal