Newbie here. I had to take the final drives off to restore the wider rear axle shaft on my narrow Cub. Removed the sumps to clean, and noticed that one of the large (bull) gears has some side play, enough to hear and see quite clearly. Not a lot, but it's there. Does this mean I have to take it apart and replace the bearings? Or is there an adjustment? Or?
Final drive play
- Thread starter pauln
- Start date
Hi,
I think the sideways play you see in the large gear, is it just moving on the shaft splines.
Pull in and out on the lower shaft at the wheel hub, if it is snug, with no end play, the bearings are not loose.
I have seen them that the large gear has the sideways play.
Below are pictures at TM Tractor Parts of the large gear, showing the splines.
http://www.tmtractor.com/tm-tractor/gfi/drgear2_001.htm
Below is a page from the Cub and LoBoy service manual showing the final drive lower gear, the assembly info doesn't mention anything about checking the side to side play of the gear.
https://farmallcub.club/rudi/farmal...ion 7 - Final Drive And Brakes/Page-07-07.jpg
If I'm wrong, someone will probably say.
I think the sideways play you see in the large gear, is it just moving on the shaft splines.
Pull in and out on the lower shaft at the wheel hub, if it is snug, with no end play, the bearings are not loose.
I have seen them that the large gear has the sideways play.
Below are pictures at TM Tractor Parts of the large gear, showing the splines.
http://www.tmtractor.com/tm-tractor/gfi/drgear2_001.htm
Below is a page from the Cub and LoBoy service manual showing the final drive lower gear, the assembly info doesn't mention anything about checking the side to side play of the gear.
https://farmallcub.club/rudi/farmal...ion 7 - Final Drive And Brakes/Page-07-07.jpg
If I'm wrong, someone will probably say.
Last edited:
Unfortunately that's not the case, as the large gear is clearly rocking (the opposite side moves the opposite direction) and not moving linearly (sideways). The other final drive unit has no play at all.
Dale Finch
501 Club
There is a spacer next to the "Bull gear"...see part #22:
Perhaps someone worked on the final & either left it out, or reassembled it wrong?
Just a thought.
Perhaps someone worked on the final & either left it out, or reassembled it wrong?
Just a thought.
Thanks. That makes sense. I'll be taking it apart shortly and will take a close look at that.
Dennis K (WA)
Active member
I don't think the bull gear should have any horizonal play. The nut tightens the bearings, spacers and gear tightly together. Shims are added or subtracted between the bearing and spacer to adjust the bearings to the housing.
Dennis
Dennis
Below are pages from the Cub and LoBoy parts manual, you can look at what is in the final drives.
https://farmallcub.club/rudi/farmal...ision 3/Group 07 - Drive Train/Page 07-12.jpg
https://farmallcub.club/rudi/farmal...ision 3/Group 07 - Drive Train/Page 07-12.jpg
I just tightened the nut and the play went away. It was just not tightened down enough when the PO redid the final drives.
Dennis K (WA)
Active member
As long as the bearings are not running too tight or too loose, you should be good to go. Thanks for reporting back your findings.
Don McCombs
501 Club
Before you button things back up, I’d inspect for any wear or damage that may have been caused by the loose parts.