Oliver Pullers

[Oliver Super 88 puller]

Anyone out there got there rear end welded for posi? What exactly do you weld? You just stick a pipe in between the bull gears and weld er solid?

 

[chucksoliver77]

Oliver Super 88 puller, my opinion is that it would be a waste of time and money. olivers almost always spin both wheels when they spin out. we have one guy in our group that bought posi unit for his 77 and does no better than the others. put your money in the engine and matched tires. chuck

 

[north puller]

Are you sure you want to weld it solid? How are you going to get turned on and off the track?

To make it fully locked, remove the diff, pull out the spiders, fill the valleys of the gear with HARD weld, then reassemble. Now the spiders can't turn.

When the gears go back together, one tooth and one valley still have to mesh, you just want to fill the two valleys on either side of the tooth.

Make sure you use very hard weld. I did this to a pickup but used a mig welder. Took a week for the gears to mash out all the weld and start spinning again. What a mess that rear end was when it came apart!

 

[Oliver Super 88 puller]

There was a guy around me that had a Farmall with welded rear. While he couldnt turn REAL good he could still get to where he wanted to go. The whole welding on this Oliver seems like alot of work. Not sure I really want to tear into it for this....

 

[puln70]

I wouldn't do it,sometimes when your pulling esp towards the end when your frontend comes up you beytter hope your going the direction you want to go or you'll have to shut it down because you can't use the brakes f/steering.I've already had a tire hit a hard spot w/front up & jerk one way or the other.

 

[Eric Bloom]

i definetly would not weld it. oliver brakes are pretty useful for steering the tractor when the front is off the ground. there are shims behind the brakes that you can take a few out and tighten up the spiders. just remember to take out equal amounts on each side, since that adjusts the ring gear to the pinion also.
Eric

 

[mEl]

(quoted from post at 18:46:28 08/18/11) i definetly would not weld it. oliver brakes are pretty useful for steering the tractor when the front is off the ground. there are shims behind the brakes that you can take a few out and tighten up the spiders. just remember to take out equal amounts on each side, since that adjusts the ring gear to the pinion also.
Eric

It would be a mistake to take shims out of the side that the ring is on if it is properly adjusted as shim removal on that side would crowd the ring into the pinion destroying the backlash setting. I have tightened up diffs by removing shims but do not mess with the backlash without a dial indicator as tooth damage or excessive noise can result. A properly set up tractor does not need a posi diff as others have also stated. mEl