1586 updates

Moline_guy · Mar 15, 2015

I am sending my 1586 to a local father son shop to have a new TA, clutch, rear seal, input shaft and gears, and throwout bearing put in. They have done a lot of IH TA's over the years but few if any rear ends on the 1586. I remember reading over on Red power there was some updates to the final drives to make them last longer. For some reason I can't get logged in or set up a new account over there and I can't find it in there archives. I thought the update consisted of putting in bearings from a the newer type 2+2 in the final drive but I don't know which bearings they are talking about. Would appreciate any information on what else should be done as long as it is going to be tore down this far. I bought the tractor with a little over 3000 hours about 8years ago and is close to 6000 hours now. Engine was sleeved when I got it, but as far as I know the drive train has not been worked on. Tractor runs and shifts good, but low side of TA has been slipping this past year. I use it as a spare loader tractor, planting, haying and silage cutting. Thanks for any information.

pete 23 · Mar 15, 2015

The bearings you are talking about are originally ball bearings. One on the differential output shaft which drives the planetary input gear and one on that shaft that gear rides on. They are bower flat roller bearings that were used in some of the large four wheel drive tractors. No 2+2 ever used the planetary rear axle drive that was used on the 15 series tractors. Lot of mix up about that. The 70 series 2+2 used rear axle like the 50 series which is totally different than a 15 series. We replaced a lot of those bearings because we had a customer with a major failure of that ball bearing that busted the adaptor housing so it kind of spooked out a lot of customers with 66 and 86 in the 15 series of tractors. There is a service bulletin some where that put us onto this as an option to the ball bearings.

Moline_guy · Mar 15, 2015

I must have mis read the post a few years back, thank you for taking the time to post this information. Would I be able to get this bulletin from a shop foreman at a dealership, or is too old and or don't they give out that information? Did any 1586 leave the factory with the updated bearings, or would all be ball bearings from the factory? Also, this is suppose to be an early 81 tractor if that makes any difference.

pete 23 · Mar 15, 2015

No 1586 tractors were factory fitted with the roller bearings. Any CASEIH service dept should be able to put you onto the correct roller bearings. I was able to find the roller bearing on the diff output shaft in the 4786 parts book number 120302C91 but it only shows ball bearing in the other spot so some matching will have to be done to come up with roller. They might be able to come up with a bulletin number but it would be back in about 1980 to 82 . The parts book for the 15 gives the size of the bearing to cross reference.

Moline_guy · Mar 16, 2015

Thanks for that information, I will look into it some more, much appreciated.

mkirsch · Mar 16, 2015

This "father son shop" you're sending the tractor to should have better access to this information, as they should have a "commercial account" with the local CaseIH dealer that gives them some extra consideration, and perhaps some contacts/buddies in the service department at said dealer.

1586 updates

Moline_guy

Well-known Member

pete 23

Well-known Member

Moline_guy

Well-known Member

pete 23

Well-known Member

Moline_guy

Well-known Member

mkirsch

Well-known Member

Similar threads