1050 engines: John Deere Review  -- John Deere Tractors Discussion Forum and Review 1050 engines: John Deere Review -- John Deere Tractors Discussion Forum

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 09-14-2001, 13:31 Post: 31813
Kudd



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 1050 engines

I seem to have spun a bearing in my 1980 1050. I spoke with a guy who said he has fixed (2) 1050's (not sure of year) with bearing problems. Mine has only 1400 hours on it. Anybody know if this is a common problem? I chnge oil twice a year with seasons. I use the tractor mostly for brush hogging in summer and plowing snow in winter. I have a block heater (live in Vermont) which I plug in when 0 degrees or less. Thanks.






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 09-14-2001, 23:02 Post: 31817
Roger L.



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That's no fun. I haven't heard anything specific to the 1050, but will let you know if I do. Does JD have a series of technical service bulletins you can get hold of that talk about common service problems? Most every manufacturer does issue these to their dealers, but it is often the case that you need to have a dealer who is a good friend in order to see them. Sometimes you can find a set for sale through a tractor literature collector. That's where I got mine, but they aren't JD.
On to mechanical things....what makes you think that you have a spun bearing? Which bearing? Can you drop the pan on that model and take a look?






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 09-18-2001, 10:39 Post: 31865
Kudd



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Hi Roger,
I took the pan off, found some anti-freeze in it, then checked the drained oil at found more coolant in there. I replaced the head gasket and fired it up. Still no power and a knocking noise. I had this local guy, (the one who has worked on these before) come and listen and the bearing was his guess. One possibility is that the coolant in the pan, caused by head gasket failure, took out the rear main bearing, which then took out the rear seal. ( I didn't mention that it was puking oil out from back of engine where it hooks onto bell housing. I think there is a weep hole back there as when digging with loader, and standing tractor on head< I've seen hydro fluid come out there before.) Motor is now at his shop waiting for disassembly. Thanks for your reply.






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 09-20-2001, 06:13 Post: 31900
TomG

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I know this is an after the fact comment and not too useful now, but too bad you didn't measure the bearing clearances with some plastagauge while the pan was off. The crank journals also could have been miced to see if they're within spec. A spun bearing would have noticed at that time. I have heard of this problem but I forget on which JD model. Bearing erosion from glycol in the oil is a good guess, but I can't make a good connection between a blown bearing and a blown rear crank seal--maybe somebody else can. Again, somebody else might know for sure, but I think that many oils have fair tolerances to glycol, and changing oil twice a year should have minimized damage. Maybe the problem is something else. A shame, but now I suppose the shop will find the answer and at considerable cost.






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 09-20-2001, 09:11 Post: 31904
Roger L.



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I've seen engines with severe rear main bearing wear where the thrashing of the crankshaft has ruined the rear seal. In fact, I'm involved with one of these right now for a friend. So it does happen. In the engine I'm thinking of, the knocking was quite loud, and it wasn't a matter of plastigauge...one bearing shell was half gone, and the other had enough clearance to see light through. BTW, the DPO this one came from had used it that way all last fall to put up hay...He did mention that he thought the engine needed some attention. The attention it needs starts with a new block...Hope that the 1050 doesn't have such problems.






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 09-21-2001, 06:55 Post: 31919
TomG

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Yes Roger, my inclination to measurement can be pretty excessive. I guess I have the attitude that if the parts are already exposed, one might as well check the tolerances. The other side of the coin is that the owner of a BSA shop where I jobbed while in school used to laugh at us junior wrenches. He'd say 'How do you ever expect to make any money if you spend all your time measuring things' (He didn't pay us by the hour)? He'd just jiggle things and say 'That's OK' or 'That's bad.' I'm not sure I that my precision measurements ever found something out or tolerance that his 'wiggle tests' didn't find. Several times, I found that I hadn't adequately wiped a shaft and it was my measurements that were wrong. Of course, I had to keep measuring because I didn't have the 'feel' that comes from 20+ years of wiggle tests. The engine you describe sounds pretty terrible, and probably both precision measurement as well as wiggle tests would be excessive. From your previous posts I recall that 'DPO' means 'Dread Previous Owner'--an expression I've adopted.






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 09-21-2001, 10:39 Post: 31931
Kudd



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Hello Gents, Thanks for your input. My wrench has since torn into engine which I delivered to him. The rear main was indeed trashed, which took out the seal. He's as yet unsure whether the damage to the block from the resultant spinning is beyond fix. He has a theory that possibly the bearing 1st spun slightly during a winter start, misaligning the lubrication hole, and starving the bearing of oil until the whole thing calved on me. I guess I'll run my block heater more often from now on in case that's the cause. I guess it's also still possible that the leaking head gasket did the deed. I always use JD oil when I change it. I'll let you know how it turns out. Thanks again.






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Discussion Boards > Active Subjects > Messages as Posted > John Deere Review Forum

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