Rear Sprocket Weight

[kedorland]

We have a 1975 450C. The machine has a cracked left rear drive sprocket. It cracked from the bottom between two teeth to the center of the hub. It shead roughly 1/4 lb. of steel at the same time. Am arranging to repair/replace this in the field, have read the manual about 20 times, gathering tools, heat source, and wise labor. The manual makes reference to a counter weight that is bolted to the bottom of the machine, just in front of the hitch, however the drive sprockets have weights bolted to them too...which I'm assuming is an option, but haven't found any mention of them in the books.

In an attempt to shorten this... I don't know the weight of the bottom counter weight nor the sprocket counter weight I'm about to unbolt.

Anyone know the weight of each?

Thank you all in advance....and I'll take pictures as I go along.

Kevin from Iowa.

[vestor_guy]

I have never seen any weights of any sort attached to the sprokets. There is a sprocket cover or rock guard that can be attached to the frame rail that covers most of the sproket. Is that what you are looking at?

As for the rear counter weight, you should not have to remove that to split the track. To remove the rear sproket, you just need to jack up the rear of the tractor, I have always used the ripper, then lower the blade to raise the front.

Then rotate the track to put the master pin in the center of the upper chain between the rear sproket and the top idler.

[CatD8RII]

Is this machine a loader?
If so does it look like this?


After a certain model (dunno if its B or C) Deere started putting weights on the sprockets on the loaders (at least on 350s).Dozers didn't use them, they use a shield like Vestor guy is describing. The ones on my 350C are more than you can pick up by yourself, I'm guessing they're over 200lbs. If you make a stud to allow yourself to slide it on and off it'll go easier. Then grab it with a choker strap.

[kedorland]

My machine is a loader. And ours looks exactly what is in the pic.

Kevin from Iowa.

[hodgdon42]

Those weights on the sprockets are very heavy. I would guess 150lbs or more. I used a 2 ton pully lift and a piece of iron bent into a "L" and they come off easy. Also once you lay that bad boy down flat its hard to get back up. So I would keep it up so you can kinda roll it.

[JWB Contracting]

I have drilled a hole in the top of the weight and then tapped it (3/8 ) and then used a shop crane to lift them.

I don't mind working hard, but yes they are heavy and cumbersome to remove and reinstall. [/list]