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684 FWA


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When I bought it the hydraulic fluid looked like coffee with creamer in it. Alternator was barely hanging on, however it does work. Power steering cylinder leaked. Few other leaks. Just going through it rebuilding head with new injectors since two pulled the brass sleeves out. New brakes, rebuild hydraulic pump, new brakes and clutch. Some new sheet metal. Trying to find decent fenders as the one had holes cut in the tops for no apparent reason. Have to find IH rims for the one side to match. Just fun little project for first rebuild. 

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  • 3 weeks later...
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Forgot to attach picture. Looks like they damaged the front hub and relined with the brass. That side bearings were extremely hard to remove. Reinstall was extremely hard also. So we assume they damaged the axle as well. After installing hub and all brass bushings and O rings we noticed the hub didn't go back against the knuckle like the other side. After filling with oil a bit later noticed the inside of the hub seaping oil. So we assumed after seeing the brass they had a lot of damage and attempted a fix but turned off too much of the inside of the hub. So now I'll be trying to find a new hub or take other off ant to the machine shop to get the hub built up so the oil seal will be back far enough to do its job. 

 

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They had an 884 with a ZF front axle at the farm I worked at. We wore that poor tractor right out. I remember needing a few parts for the front axle once and they were almost impossible to find, at least all the salvage yards I checked. My guess is the reason someone used brass to repair the hub was because a replacement either couldn't be found or was more than they wanted to pay.

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After replacing the repaired right front hub, it was seeping on the back side and left about a 1/4 of an inch to get up snug. So had to find a replacement hub. Thanks to Cook tractor, he searched and found me one. Unfortunately had to replace the big oil seal again. Installed the new hub and the axle wouldn't turn. We noticed this issue before on the damaged hub, but didn't think much about it. After a few brain cells being wrung out, we figured out the alignment mechanism on the knuckle to align the spindle with the axle shaft. After much PB Blaster and an electric impact working the adjustment loose. We were able to align and by trying to mimic tractor load on that adjustment by prying on the knuckle, it turns smoothly. Put wheels on and split in half and now replacing almost worn out clutch. 

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  • 2 weeks later...

Well unfortunately another problem showed up. After starting tractor and starting to bleed the brakes, the front right corner of the head gasket started leaking oil. Pulled valve cover off all bolts torqued to 90 lbs. So we took head off and the front right oil hole on the gasket was offset just a bit. Mechanic said I think at least he said it was coming through the gasket. So went to dealer this time for new head gasket and on this gasket there is a copper ring around that hole and it lined up perfect. Replaced head and torqued bolts and after a few hours to give bolts time to stretch all was well. So I've attached a picture of the aftermarket gasket. After the fact I wish I would have taken a picture of the other gasket to show the difference. Started to bleed brakes again and now the reservoir isn't filling up with fluid for the brakes. By this time we'd had a full day. So we'll tackle that problem Friday. 

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One trick to bleed the brakes is to pinch off the return line that dumps into the top cover of the transmission. Slip some small tubing over the bladder screws and route them so they can drain into the fill plug at the rear of the tractor. We had an 884 that would lose the brakes if the tractor sat for an extended period of time.

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