Combines Accelerator roll bearing

Forgot to add that it's on a '93 R52, if it makes a difference.

On 62 and 72 that early there is a piece of metal behind the gears. All the gears and the pulley have to come off because bearings are on the inside of the plate. There is about 12 5_16 bolts that bolt it to the combine. The 5_16 bolts do have push on nuts on them. Good question as to why they didn't design them on the outside.

Tom, You need to get the locknut off holding the drive sheave on. Use a pipe wrench on lH side to hold shaft. Once you get locknut off the challenge is to get sheave off. A lot of times you can use a large pry bar to get sheave to move off of shaft. For the tight ones,we made a puller that bolts to sheave so it can be removed. It requires drilling and tapping three holes in sheave. Bearing is directly behind sheave in a cast housing. If bearing has spun on shaft there is an updated shaft and bearing assy. that is larger to carry the load that is being put on this shaft. Hopefully it is just the bearing. The locknut on this shaft is similar to the mainshaft as it needs to be checked for tightness yearly. Good luck, Hyper Harvest II

Thanks for your replies. I posted this question last evening after we got rained out for the day - we hadn't really torn into it yet. I guess we were lucky as the sheave came right off with very little "persuasion". It hadn't ran long enough to damage the shaft either. Anyhow, we're back up and running again. We had nightmares about having to remove the clean grain elevator to get at the thing though! Why would the larger models have the bearings on the inside while the 52's have them so easily accessableIJ Thanks again... Tom langan

Sorry for misleading you guys the bigger models are the same way other three bearings are on the inside

I put mine back together on the outside!

A '93 R52 is basically identical to larger machines in this area except larger machines use two smaller distribution augers and yours one big distribution auger. We have so little problem with them bearings that we don't need to worry about it much. I truly believe the original thinking with the bearing flanges on the inside on the rolls and auger(s) (except the very bearing you had fail) is they we're going to have the augers quick removable just like they were on earlier combines. If it were my machine and I was in a hurry repair and didn't have room to move bearing to outside I would cut hole around bearing area large enough to pull complete auger and bearings out. I would then set auger on table and replace both bearings. I would then reinstall in combine and weld flat iron to plate bearing is fastened to. I would then drill three or four holes threw flat iron to secure it. Next time would be more of a snap to repair. Gleaner does have it now where you can remove plate to pull augers but I'd rather just pull the one with bad bearing and get back together very quickly. Anyway I'll keep them bearing flanges on my wish list I send to Gleaner from time to time. Have a good one

I thought about that but was customer machine and needed to get him back to cutting. I have put the ones on the left side on the outside. Had to grind flat spot in shaft for set screws, would also be better to use thinner gears.