Final Drive

Gary -
you had a thread about the final drive, now starting a new one?
It would be better if you kept adding to the original thread so others know what has been suggested.

As always, photographs are most helpful as sometimes terminology becomes confusing.

Pulling a sprocket from the shaft is not a job for a makeshift puller, it requires tons of pressure and should always be done from a remote location. As an example - the other side of the tractor! Caterpillar designed specialized tools (pullers) for these high tonage applications.

It has been many years since I was around a final being pulled apart. If memory serves correctly, once the bolts are removed around the "bull gear" housing, the housing can be carefully seperated from the tractor case that houses the steering clutches and ring/pinon gear. Of course this requires all of the attachement to the track frame to be out of the way and lose.

I am sure there are many here that will jump in and give you the help you need!

CTS

Thank you for your response. I have rail lowered and will send an attachment this evening. I have got two supports to pick up the final drive.

You need to get that outer hub/bearing retainer off it's taper first. Either with a puller contraption or by turning the big C- spanner nut anti clockwise as tight as you can with a 4 foot pipe extension, then whacking the hub on either side at the same time with two 12lb plus hammers (mind each others kneecaps), retighten nut, repeat the pounding, till it pops. Make sure the outer nut is in place with just enough clearance to allow the hub to pop off the taper.
Cat hung on to that final drive design for half a century.

K, l have not give up yet. Thank you for the reply. I am going to try your recommendation. If I am successful with this tomorrow it will call for a small celebration. Working garden awhile. Celebrating the day of rest by rocking on front porch. Thank You, Thank You. gwoods

I can't stand it any longer ---You must remove all of the out board parts to gain access to the final drive parts or to remove the final drive case. This includes using the proper puller to remove the sprocket.The "outer bearing adjusting nut" must be removed - this is pictured below. You need the proper tool to turn the nut - a 48" trimo or some homemade tool will not do it. Heat may be needed. Cat calls for a 5F9693 spanner to turn it. I use a OTC CT 686 wrench. Once you get it to start pushing on the "bearing cage holder" and get some pressure on the taper, a hard hit with a sledge may help. It only takes a slight amount of movement to release it from the taper.You will need the same wrench to remove the pressed on outer bearing.All the seals and other stuff comes off much easier - but a nasty mess of years old grease, oil and dirt. [attachment=72604]001.JPG[/attachment][attachment=72605]002.JPG[/attachment][attachment=72606]003.JPG[/attachment]