Outdoor Power Equipment (Lawn Mowers, Snow Blowers, Chain Saws and more) Discussions

 I've got an restored 824 that I put an 8hp OHV engine on and will never part with it. Here's my problem, I picked up another one for my step father and restored it (clean, sand, prime and paint, new belts and new 5hp OHV engine). The limited slip rear axle on his thrower is locked up! Even with the tension nut/spacer off of the left wheel we can't get the wheels to counter rotate. Any suggestions would be great.

Here is a diff that was not maintained it cleaned up well though.

Most of the time the short shaft that slides through the left shaft will be rusted to the left shaft. Than the diff will not work. I lube them with OO grease. You may need to press the small inner shaft out.

Here is a picture of the assy the short inner left shaft is still attached to the right shaft in this picture.

AJ

Wow...   Looking at that diff...  What kind of seal does the shafts have to hold in the "oo" grease?   Is it a felt washer and flat washer?

Looking at the unit,  would it be beneficial to tap  a 1/4 -28 hole into the case on the top and  bottom to act as a plug and fill ports to  remove and flush older grease.  It seam to have a history of  entrapping moisture in the case.   Just an Idea..

Friiy

 

friiy wrote:

There are no seals just a tight fit and low speed. The owner of that diff did add a grease zerk but it isn't really needed if you maintain it properly. All that is needed is to remove a roll pin from the right side and the large wing nut bell washer friction disc and friction plate from the left side and the whole thing just pulls apart as in the lower picture. Than just add a liberal amount of OO grease into the diff and coat the short inner left shaft and put it back together. Pumping grease into the diff will not coat the short inner shaft and you need to do that if you don't want it to rust to the left outer shaft.

AJ

I'm going to have to pull this apart, any ideas where I can get a gasket for the diff? And I think the bell washer is fubared! Thx

dracoskeeper wrote:

There isn't a gasket it just bolts together.

AJ

Ok, today I pulled everything apart and cleaned it up. It wasn't quite as bad as the picture but it was locked up.I picked up the 00 grease and liberally lubed everything and put it back together. It was a pretty tight fit to get the gears back on the shaft even cleaned and lubed and now about every 3-4 counter rotations it binds up a little. Is there a sweet spot that the gears need to find or should they slide on the shaft? Thx Dean

The gears should just slide onto the shafts and nothing should bind. It is possible to get the gears out of sync but then the gear case would not go back together. When the gears are correctly installed the gear case will just fall together.

AJ

I'm going to pull it apart tomorrow and reclean the holes in the gears that slide on the shaft. I think that is where it is binding. I'll post a follow up. Thx