Jump to content

Garden Tractors and Parts on eBay

- - - - -

Inside A Bevel Gearbox

hb112 vickers allis chalmers simplicity bevel gearbox

  • Please log in to reply
5 replies to this topic

#1 New.Canadian.DB.Owner OFFLINE  

  • Senior Member
  • Contributor
  • Member No: 10178
  • 2,331 Thanks
  • 1,499 posts
  • Location: Trenton, Ontario, Canada

Posted December 12, 2012 - 07:34 PM

I had some spare time today after I got the Gearbox sounding normal, so I thought I would look at the BGB. It had about .100" end play on the output shaft. I installed a shim (.080") between the driven gear (#11) & the bearing (#10). Now it has about .020", which is likely still to much, but it sure isn't .100"!

BGB 1.jpg BGB 2.jpg

It looked simple to open, seeing as the T66X is out & waiting on a seal kit. I did have to remove the hydro reservoir, but that was just 2 bolts.

I thought I'd post some pictures so others can see what they are getting into. It was fairly easy to do. All told, it took about 4 hours.

1. Measure your end play so you know how thick a shim you need.
2. Drain the fluid and remove the back cover (#30) being careful not to tear the gasket (#29).
3. Remove the nut that secures the output pulley (1 1/8" on mine), and then it's key (#13), and then the spacer (#6).
BGB 3.jpg

4. Slide the driven shaft (#3) a couple of inches to the left. You will see a second key (#13) inside the BGB. Remove it and continue sliding the driven shaft out the left side of the BGB.
BGB 4.jpg

5. Remove the driven gear (#11).
6. Install shim.
7. Resemble & fill with 80w90 gear oil. How much oil? Until it stays in the fill tube.
BGB 5.jpg

Better BGB Page 2.jpg
(I'm not sure what is happening to this picture. The file size & quality keeps changing when I save the post. Sorry.)

Here is the new diagram, as MH81 suggested.
Better BGB Page 2 cropped 2.jpg

Edited by New.Canadian.DB.Owner, December 13, 2012 - 10:45 AM.

  • MH81, Cat385B, bigcountry48 and 1 other said thanks

#2 bigcountry48 OFFLINE  

  • Senior Member
  • GTt Junior
  • Member No: 10316
  • 101 Thanks
  • 207 posts
  • Location: Brooks, Ga

Posted December 12, 2012 - 09:47 PM

Thanks for the tips, I am about to break into the BGB off my B12 and this will sure help!
  • New.Canadian.DB.Owner said thank you

#3 Cat385B OFFLINE  



  • Senior Member
  • Contributor
  • Member No: 8002
  • 14,140 Thanks
  • 10,055 posts
  • Location: MN

Posted December 12, 2012 - 10:39 PM

Sticky worthy, me thinks. Nice write up!
  • New.Canadian.DB.Owner said thank you

#4 marlboro180 OFFLINE  

  • Senior Member
  • Member No: 10710
  • 635 Thanks
  • 954 posts
  • Location: SE WI

Posted December 12, 2012 - 10:50 PM

I like seeing the guts of a gearbox , thanks!
  • New.Canadian.DB.Owner said thank you

#5 Farmlife OFFLINE  


    Tractor Whisperer

  • Senior Member
  • -GTt Supporter-
  • Contributor
  • Member No: 12309
  • 1,233 Thanks
  • 1,461 posts

Posted December 13, 2012 - 05:18 AM

nice, thanks for shareing....
  • New.Canadian.DB.Owner said thank you



    Proud to be Deplorable

  • Senior Member
  • -GTt Supporter-
  • Contributor
  • Member No: 802
  • 29,970 Thanks
  • 29,758 posts

Posted December 13, 2012 - 05:25 AM

Thanks for the info, looks like it'll keep going for a long time now.

The pic resizing is normal. Software auto resizes by max hgt x max width. If you crop the original image so the parts list isn't in there, it should be more legible after you upload it again.
  • New.Canadian.DB.Owner said thank you

Also tagged with one or more of these keywords: hb112, vickers, allis chalmers, simplicity, bevel gearbox