WD pto & broken box

we sold several box's and shafts but normally because they have hit a stump might just be wear and tear unless your missing the washer had a man take his a part and lost the washer that goes on the shaft with the intermediate gear if that's not there might be binding Niel

only shims are on the shaft coming out of the box that connects to the pto shaft some paper or some steel
and the thrust washers Niel

How are the treads if the box gets loose? I was wondering about chasing them and using lock tight. Sometimes the old threads can get bad.

This has happened twice in 2 years hitting nothing. The metal shim is the original shim and was reinstalled both times ( one the gear broke once the box broke) during the two failures. I know they are tapered bearings. There is also one paper gasket. Are there supposed to be more? This would add to the clearance, does anyone have an assembly drawing of the PTO gear box to confirm number of gaskets or how do you determine sufficient backlash? The drop box had previously over 30 years never been loose. my son said recently it was loose. It was re tightened. How could this be with nuts and lock washers (threads fine)? We had no oil loss. The studs in the transmission( with lock washers) two are broke because of this new rupture. The hardware in in the box was original so the quality should have been there. The gear or back lash .. how much is acceptable and how do you measure this? I know I could use more paper gaskets and rather have more clearance than not enough but I'm not sure that's the problem with the fracture of the drop box. Besides hitting something, and besides clearance what else could cause this?

Things I would do or check. Make sure you are using a working slip clutch. Make sure the shear bolt is a shear bolt. Replace the bearings in the drop box. Inspect all the gears and make sure there is some backlash. Make sure to check or replace the bearing at the end of the PTO shaft. Check the trueness of the PTO shaft.

Helped dad put pto box on W c and I remember it said if gears whine add gasket ,if it roars remove gasket .It whined so we added a gasket .Pulled allcrop about ten years and never had a problem.

j.w.freck wrote: just shelled out an intermediate gear on one of my 45 diesels last week.i have 2 spare gears at the ranch.will start splitting the tractor when it cools off.the way I set the pto drive box clearanceis.i like about .005-.007 at the pto stob shaft.that is rotational movement.i mhave set up several this way and no problems.you have ample tooth clearsance for gear lubrication with out any gear whine.you just keep adding or removing shim stock till you get it.i also throw away the original nuts on the pto box and use a good aircraft self locking nuts.....

have had a wd and wc onbush hogs and have never broke those gears was always sure we had the proper shear bolt in pto

Charlie's right, you don't HAVE to split it to replace, but after having mine split and apart, it would be very difficult to and line up for reinstall while in the tractor. When reading through old posts on here I think one of the experienced guys like (MACK??) admitted they had about a 50% success rate changing without splitting. It all depended if the shaft slides forward easily or not.

Here's some pictures after I split mine last year.

http://www.allischalmers.com/forum/forum_posts.asp?TID=120328&title=how-to-or-not-to-split-wd45-replace-seals