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JimWenigOH 
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Joined: 12 Sep 2009
Location: NC Ohio
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 Topic: 8050 Vibration Damper
Posted: 11 Oct 2025 at 8:51pm |
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I noticed a slight wobble of the crankshaft pulley while the engine was running. Looking closer I noticed the neoprene on the damper was cracked and not spaced evenly around the circumference. Didn't look like there was any recent movement, but don't think this is proper. I tried doing a search for this subject and came up empty. I seem to remember this topic discussed on here before and believe there was a place out in the NW USA that rebuilds dampers. Would appreciate thoughts and comments on this.
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IBWD MIke
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Joined: 08 Apr 2012
Location: Newton Ia.
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Posted: Yesterday at 6:07am |
Jim, it has been discussed. Seems like not that long ago. If memory serves a dampener from a Detroit diesel of some sort might work?
Edited by IBWD MIke - Yesterday at 6:11am
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Lynn Marshall
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Joined: 13 Sep 2009
Location: Dana, Iowa
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Posted: Yesterday at 7:40am |
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Mike's link discusses the fluid dampeners used on the higher horsepower engines. I'm not sure if the guy in Oregon?? is still rebuilding the rubber dampeners. Dale manufacturing, I think.
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Mikez
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Posted: Yesterday at 7:56am |
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Right Jim is referring to the rubber in the crank pulley
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SteveM C/IL
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Posted: Yesterday at 9:51am |
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Dr Allis had one rebuilt not so long ago.....
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DrAllis
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Posted: Yesterday at 10:50am |
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Yes, and I had it done by Dale Mfg in Salem, Oregon. Address is 3425 Fairhaven Ave NE zip 97301. Email: langsatherdavid@gmail.com It is my understanding that he has officially retired now, but check that out for yourself. A & I products has new ones with p/n A-74037126.
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ecosse23
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Joined: 12 Mar 2024
Location: Scotland
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Posted: Yesterday at 1:40pm |
Purely out of curiosity I had a google search, and turned up a firm in California -
http://damperdoctor.com/ - which lists custom rebuilding of harmonic balancers, including for heavy equipment. May be worth asking them, just in case they can help?
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JimWenigOH
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Location: NC Ohio
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Posted: 10 hours 53 minutes ago at 6:29am |
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Thank you all for the helpful information. Will do some research on repair or replacement, and update with results. In reading the Service Manual for the tractor, it states that in order to replace this crankshaft pulley, "....Support front end of tractor and remove front support and front axle assembly." Mine has FWA. Really, you have to do all this to remove the pulley?
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DrAllis
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Posted: 9 hours 33 minutes ago at 7:49am |
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You will be pulling from 3 (of 6) 7/16" NC holes in the center hub. Loosen the crank nose bolt a couple of turns so the washer behind the bolt head is obviously loose. Make yourself a 1/2" thick plate (or thicker) with three holes to line up with the holes you are going to pull from. Use grade 8 hardware and run a tap thru the holes to get good connection depth. Mine is a 3/4" plate with a 1 inch hole in the center. I have a 1 inch NF nut welded to the inside of the plate and use a 1 inch NF Gr8 bolt for the pusher screw. You can use a short porto-power ram too if you desire. Sometimes takes 10 tons. Radiator shroud and fan must be removed to gain access. Front end stays put, but it's a tight area for sure.
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