so what was the problem?
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Category: Allis Chalmers
Forum Name: Farm Equipment
Forum Description: everything about Allis-Chalmers farm equipment
URL: https://www.allischalmers.com/forum/forum_posts.asp?TID=57218
Printed Date: 06 Sep 2025 at 7:20am
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Topic: so what was the problem?
Posted By: Longmeadow Farm
Subject: so what was the problem?
Date Posted: 21 Sep 2012 at 6:34am
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I finally got around to changing the engine oil and filter on my recently acquired 1999 AGCO-Allis 5660, (with only 327 hours on it and an oil/air cooled engine) as I wanted to start using it to move a compost pile and manure stack. I noticed that every time I started it I heard noticeable valve train clatter... but didn't think about it too much as the "clatter" was gone in 3 or 4 seconds. On Tuesday last I dropped the oil and noticed that it was rather clean to the eye at least and didn't appear to be contaminated, but the filter was a bear to remove..like it had been on the tractor for quite some time. However, once removed the oil filter felt like it had lead in it... somewhat heavy..even after making sure the oil that could drain..did drain out. I replaced the filter with an AGCO original equipment filter and filled the crankcase with JD 15-40 ..Hy-Guard II. Started it up to check for leaks and thought the engine sounded a bit quieter. After a day sitting in the shed I started it up to do some work and quickly observed no initial valve train clatter and a noticeably quieter running engine. Was the oil just worn out and/or was the filter partially plugged up? I'm starting to believe that maybe no one ever changed the oil and filter...since new.. Or maybe some second rate crankcase oil was used??? thanks
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Replies:
Posted By: injpumpEd
Date Posted: 21 Sep 2012 at 10:26am
cheapo filter draining back down?
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210 "too hot to farm" puller, part of the "insane pumpkin posse". Owner of Guenther Heritage Diesel, specializing in fuel injection systems on heritage era tractors. stock rebuilds to all out pullers!
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Posted By: Longmeadow Farm
Date Posted: 21 Sep 2012 at 3:33pm
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Thanks Ed, I didn't think that a restricted/bad oil filter would do that .. but it is a reasomable explanation. The "clatter" was like hydraulic lifters collapsed and needing to be pumped back up. But the 5660 engine doesn't have hydraulic lifters.
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Posted By: Amos
Date Posted: 22 Sep 2012 at 7:10am
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I can't say I have ever heard that noise coming from our 5660. I am betting your filter was plugged solid and some one may have just changed only the oil for the life of the tractor...sometimes low, low hour machines tell us different things after they get putting some hours on, especially combines I have noticed.
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Posted By: Longmeadow Farm
Date Posted: 22 Sep 2012 at 12:17pm
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I guess it doesn't take too many hours of usage to plug a filter that measures 3 inches long by 4 inches wide. And after I took the filter apart it looked, to this untrained eye, like it was probably plugged up somewhat. The owners manual says to change the oil/filter after the first 50 hours and every 150 hours after that. I suspect that the last time it got changed was in 1999 or 2000 after the first 50 hours. The original owner traded it on a larger tractor after a few months of use. The second owner used it very little the ensuing 12 years...averaging about 20 hours per year. I guess I should have expected it as it took me almost 2 hours to get a number of loader pins to take grease. I wonder if you can get a larger filter for the 5660... as it is only about 60% the size of the filters I have on my 5000 series JD and AC 175.
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Posted By: Dipstick In
Date Posted: 22 Sep 2012 at 12:54pm
My "good rule of thumb" with a new to me machine is to do a complete service and then YOU know the intervals.
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You don't really have to be smart if you know who is!
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Posted By: Krazy Karl
Date Posted: 22 Sep 2012 at 5:54pm
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It probably was your oil bypass opening. if you filter was clogged bad
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