Front crank dampener for a 8070
Printed From: Unofficial Allis
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=193124
Printed Date: 02 May 2024 at 3:00am
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Topic: Front crank dampener for a 8070
Posted By: 8070nc
Subject: Front crank dampener for a 8070
Date Posted: 26 Jan 2023 at 6:28pm
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Does anyone know where I can get one new ------------- 1984 80780 1957 D14 DES 300 with 25000 engine 616 tractor |
Replies:
Posted By: DrAllis
Date Posted: 26 Jan 2023 at 6:30pm
| AGCO doesn't have them ?? isn't there a brand name stamped on your old one ?? |
Posted By: 8070nc
Date Posted: 26 Jan 2023 at 7:24pm
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Thanks Doc. My dealer says they are no longer availiable. I havent taken it off yet so i havent examined it for a name ------------- 1984 80780 1957 D14 DES 300 with 25000 engine 616 tractor |
Posted By: DrAllis
Date Posted: 26 Jan 2023 at 7:40pm
| I'd heard the 8050 and smaller rubber damper wasn't available, but had not heard the fluid damper to the 7080/8070 wasn't as well. |
Posted By: MikeKroupa
Date Posted: 26 Jan 2023 at 9:09pm
| Doc is right there is manufactures name/part number stamped on them. I also think either a Detroit 4-71 or 6-71 used the same fluid dampener. Good Luck |
Posted By: SteveM C/IL
Date Posted: 26 Jan 2023 at 9:55pm
| Fliudamper's 4-71 DDA appears to have same demensions. I never chased the specific measurements as I found a NOS in WA. Worth investigating if they're priced similar to their other products. Both my original and replacement have names stamped (different) and neither are found by google. |
Posted By: Alvin M
Date Posted: 27 Jan 2023 at 8:23am
| Dale manufacturing used to rebuilt them 503-364-8685 |
Posted By: 8070nc
Date Posted: 27 Jan 2023 at 9:18am
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Thanks everyone. Gives me some rabbit trails. Ill see which one get me there. Ill post when I find a solution. Might help someone else ------------- 1984 80780 1957 D14 DES 300 with 25000 engine 616 tractor |
Posted By: DrAllis
Date Posted: 27 Jan 2023 at 9:44am
| Dale Mfg rebuilds the rubber dampers, because he just did one for me. I've never understood him to rebuild viscous dampers, but maybe he does, but I don't think so. |
Posted By: 8070nc
Date Posted: 27 Jan 2023 at 11:59am
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I talked to Dale Mfg. They only do the other style. He did tell me what happens to fliud damper is the fluid wears out and the inner weight binds so it stops functioning. I have found a NOS ill be good on this tractor. I do thank everyone for their help ------------- 1984 80780 1957 D14 DES 300 with 25000 engine 616 tractor |
Posted By: Allis dave
Date Posted: 27 Jan 2023 at 12:43pm
| That's concerning if there are no longer options for these... |
Posted By: 8070nc
Date Posted: 27 Jan 2023 at 4:06pm
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Im not sure but im becoming convinced that a damper off a 71 series detroit is the same thing In time I will find out for sure and iI will post it for sure ------------- 1984 80780 1957 D14 DES 300 with 25000 engine 616 tractor |
Posted By: Ron(AB)
Date Posted: 30 Jan 2023 at 12:33pm
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I checked my dealer and they also said - "no longer available" and "none in stock" at any dealer! The dampener is on: 8070, N+R series combines (with the allis engine) and the small 4WD tractors too... Has anyone found a crossover? ------------- 405, 7000, 7050, 8050, 8070, L3, 2300 & 2600 disk |
Posted By: Ron(AB)
Date Posted: 30 Jan 2023 at 12:55pm
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Reliance is showing the part on their website and Jen sales (which just resells Reliance parts?). just under $1200... ------------- 405, 7000, 7050, 8050, 8070, L3, 2300 & 2600 disk |
Posted By: AC7060IL
Date Posted: 30 Jan 2023 at 4:14pm
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Could one of these dampener be what you’re looking for? https://klmperformance.com/products/detroit-diesel-series-71-crankshaft-damper" rel="nofollow - https://klmperformance.com/products/detroit-diesel-series-71-crankshaft-damper Or?   
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Posted By: 8070nc
Date Posted: 30 Jan 2023 at 4:29pm
 This is a new one from Allis. There is one that goes on a 71 series detroit that appears to be the same as the ones on the allis engines. When I get the old one off Im going to find one from the detriots and find out. Ive got another 8070 that needs the engine built so ill neef another one ------------- 1984 80780 1957 D14 DES 300 with 25000 engine 616 tractor |
Posted By: injpumpEd
Date Posted: 30 Jan 2023 at 5:09pm
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Dang! That does look exactly like the 71 series detroit one I'm watching on ebay. I'm betting they are the same. ------------- 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! |
Posted By: 8070nc
Date Posted: 30 Jan 2023 at 5:17pm
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I think you are right Ed ------------- 1984 80780 1957 D14 DES 300 with 25000 engine 616 tractor |
Posted By: SteveM C/IL
Date Posted: 30 Jan 2023 at 7:25pm
| The one off my 85 was a Stahl. The replacement is some other name. Haven't looked at the "new" tractor(83) to see what it is. Niether are Vibratec/Fluidamper brand. |
Posted By: SteveM C/IL
Date Posted: 31 Jan 2023 at 11:31am
| Original on 85 8070 was Stahl. Replacement is Metaldyne. 83 8070 has a Hydraulics Houdaille. Seems to have been a few vendors. Be nice if there was a way to test one for "good" or not. Don't think thers a method. |
Posted By: MACK
Date Posted: 31 Jan 2023 at 8:30pm
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Use the biggest one you can find they will fit bolt pattern. Can't get one too big. MACK
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Posted By: DrAllis
Date Posted: 31 Jan 2023 at 9:50pm
| Many years ago, I had two bad ones on a 7580 and 7080 within 6 months of each other. On each tractor, if you ran the RPM's at 2500 to 2600 there was an awful rattling in the front end of the engine, like timing gears were bad. Above 2600 or below 2500 the noise completely went away. Both tractors had welded A/C and alternator brackets, so this had been going on for a while. Removed the old damper the noise was still the same. Installed a new damper and the noise was GONE. We got the 7580 with the engine locked up because the oil pump mounting bracket was broken allowing the oil pump to disengage the drive gear from the crankshaft gear. Repaired the engine and reused the old damper (we'd never heard it run before) and had this terrible noise at that 2500-2600 range. Finally figured out what broke the oil pump mtg bracket was the same thing that broke the A/C and alternator brackets...a bad fluid damper. |
Posted By: darrel in ND
Date Posted: 01 Feb 2023 at 6:49am
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Great thread going on here, very valuable information. Thanks to all of the contributors. Darrel |
Posted By: injpumpEd
Date Posted: 01 Feb 2023 at 7:26am
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If it is indeed the same as the Detroit Damper, I can get new ones from Interstate McBee. Well, they're currently out of stock though. So AGCO not having them might not be a problem lol! 5177763 is the Detroit number I've researched some. I would like to put one on my 210 puller and get the original one off.
------------- 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! |
Posted By: Kevin in WA
Date Posted: 01 Feb 2023 at 9:42am
| Years ago I do remember Clevite listed them the same as some Detroit 71 series. |
Posted By: Peterson
Date Posted: 02 Feb 2023 at 6:43pm
 This is the one I plan to use on our 8050 that will be getting a counterbalanced crank. It's a 6-71 detroit balancer. Bolts right up. 12 3/8" in diameter. Based on my measurements, it "should" clear everything. ------------- 7095-685I at 255hp, 8070-225HP,8050-210Hp,8030 with 155HP,220 with 670T engine with A-pump, 7580, 185 with 140HP, 2-6080's,6070, S4 D17,wd45,CA,st34 agco, S1 D17 with 3500MK2 |
Posted By: Peterson
Date Posted: 02 Feb 2023 at 6:46pm
 ------------- 7095-685I at 255hp, 8070-225HP,8050-210Hp,8030 with 155HP,220 with 670T engine with A-pump, 7580, 185 with 140HP, 2-6080's,6070, S4 D17,wd45,CA,st34 agco, S1 D17 with 3500MK2 |
Posted By: BKarpel
Date Posted: 02 Feb 2023 at 8:45pm
| Can you spin test a fluid balancer? I am using a orange color balancer on pulling tractor. Think from N5 Gleaner. |
Posted By: SteveM C/IL
Date Posted: 02 Feb 2023 at 9:15pm
| Peterson,I can't read it all but see the word Houdaille. The one on my 83 has the same little balance weights welded in bore. |
Posted By: DrAllis
Date Posted: 02 Feb 2023 at 10:49pm
| Cannot spin test a harmonic damper. It controls harmonic vibrations as they occur at certain engine speeds and loads. Not like balancing a tire. Any engines crankshaft rotates in pulses from compression strokes to firing strokes, etc,etc. So, the floating donut ring inside the fluid damper is suspended in a silicone fluid that allows the donut to start/stop continuously as the outer shell rotates to control harmonic vibrations. Rubber dampers do the same thing. When the silicone gets old and stiff, or leaks out, the damper is ineffective. |
Posted By: SteveM C/IL
Date Posted: 03 Feb 2023 at 7:25am
| I have seen pictures of bad balancer cut open. The fluid was dried out looked like plastic sheet. |
Posted By: AC7060IL
Date Posted: 04 Feb 2023 at 12:57pm
| Yes, loads of good info on this forum. Thanks to everyone for their contributions. This dampener thing is hugely important. Seems like there should be a mfg’s schedule for replacement of their engine’s dampener?? Did AC dealerships receive company bulletins about it? Or,,, possibly it’s a difficult item to forecast? Maybe some wear out faster than others because of different customers’ usage? |
Posted By: DrAllis
Date Posted: 04 Feb 2023 at 2:54pm
| When a rubber damper wears out or fails, it's obvious to see as the pulleys get crooked or they rub a hole in the timing cover. The viscous (fluid) dampers are certainly more difficult to diagnose and are recommended to be replaced by some engine manufacturers at OH time or certain hour intervals. A-C did not specify. |
Posted By: bigal121892
Date Posted: 04 Feb 2023 at 9:04pm
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We always did ours at 3,000 hours. |
Posted By: SteveM C/IL
Date Posted: 05 Feb 2023 at 2:18pm
| If you can buy a 4-71 DDA version for $500 (appears to be the same) VS OEM for $1500 (got it discounted to $1400 2yrs ago) it would be money well spent especially around 5000 hrs. |
Posted By: jeickman01
Date Posted: 05 Feb 2023 at 5:50pm
| I had been taught that a bad dampener could also result in a broken crankshaft. There must also be some interesting industrial history here too (not that as Allis fans we are interested in industrial history). Stahl dampeners were made by Carl Stahl who, according to his obit, worked for Cummins in IN and relocated to Memphis to start Cummins Recon. Does not appear that Stahl became a major manufacturer or maybe he was bought out by someone else. His obit states that he invented the Transdamper. Wonder why he wasn't a major manufacturer with the widespread use of crank dampeners. |
Posted By: SteveM C/IL
Date Posted: 05 Feb 2023 at 8:48pm
| According to Vibratech data the 4-71 damper is 10.8 Dia and weighs 14 lbs. I tape measured old Stahl at 10 7/8 Dia and it weighs 12.5 lbs. Close enough? If bolt pattern matches. Peterson has a 6-71 damper bolted on which is bigger but I'm betting the bolt pattern for the 71's are the same. A phone call could confirm bolt circle diameter. I think the Detroits were thicker rings thus the weight difference. |
Posted By: orangereborn
Date Posted: 06 Feb 2023 at 6:51am
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https://www.vibratechtvd.com/detroit-diesel-replacement-dampers" rel="nofollow - https://www.vibratechtvd.com/detroit-diesel-replacement-dampers ... I also know an individual involved in that arena at an international level and am picking his brain. He said that Mack's logic "Use the biggest one you can find they will fit bolt pattern. Can't get one too big." is generally a desirable consideration but unfortunately too often the damper is designed around the engine and not the reverse...So many are product specific unless one gets lucky...Good topic and I hope it gets moved to the knowledge section....Dale
|
Posted By: darrel in ND
Date Posted: 06 Feb 2023 at 9:26am
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I suppose that it's been at least 25 years ago now, when I was working at the farm equipment dealership yet, I customer had the nose of the crank shaft break off on his 8070. Was such a pity to see the whole engine have to be torn down and new crank put in when it was running perfectly fine. After learning more, and after reading this thread, looking back, I'd bet anything that it was the result of a bad dampener. Had the customer had a tell tale sign or something, replacing the fluid dampener would have been a way cheaper fix. Darrel |
Posted By: SteveM C/IL
Date Posted: 06 Feb 2023 at 3:23pm
| Agree Dale. That's why the BIG diesels have big dampers. when you take a given horsepower engine and crank it up,the OEM design balancer becomes inadequate for the new harmonics. |
Posted By: AC7060IL
Date Posted: 06 Feb 2023 at 6:05pm
| Maybe the AC Big Al 25000 844 didn’t have a big enough harmonic dampener? It was 425hp at factory. R&D had several trucks that they pushed more fuel to produce 900hp, before settling at 600hp on some. Big complaint with them was broken crankshaft at/or near #1 cylinder. |
Posted By: DrAllis
Date Posted: 06 Feb 2023 at 6:26pm
| There was a crankshaft nose improvement on the last year or two (1985-86 ?) of 426 engines that not many people are aware of. A bad damper can cause lots of problems for sure, but there was an apparent weakness in the 426 crankshafts that was addressed in these last couple of years of production. The engineers removed the two half-moon keys from the cranks nose area (one for the crank gear and the other for the crank pulley) and replaced them with small round pins. This reduced stresses that were there with material removed when they used half-moon keys. The other change was they went to a smaller diameter bolt to retain the crank pulley that was much longer and was threaded deep into the front main bearing journal, putting the nose of the crank under compression, making it stronger. These two changes were an improvement to reduce crank nose breakage. Big Al cranks needed that done to them. A truck engine crank goes thru a lot of twisting under full acceleration and load. Then, you get completely off the throttle to shift gears and then back down to the floor again. This constant twist and release is very hard on crankshafts. |
Posted By: DMiller
Date Posted: 07 Feb 2023 at 6:06am
|
Did Allis use Viscous dampers later in life of company? What I am noting is those have a defined hours lifespan where the Viscous Gel hardens and the dampers become functionally useless. Cat Cummins and Detroit has service literature as to replacing these at specific engine life intervals. I replaced the one on my Cat truck engine and cut the old one open, was as depicted with the gel almost to gorilla snot glue consistency not gelatinous. |
Posted By: DrAllis
Date Posted: 07 Feb 2023 at 6:41am
| From the very first 7080 engine on up (7580-8070-N5-N6-R5-R6-4W220) always had a viscous damper. All these engines also had the counterbalanced crankshaft and produced the most HP at the highest rated RPM's. |
Posted By: JPG AUSTRALIA
Date Posted: 07 Feb 2023 at 8:21am
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Can a rubber 7060 damper be used on the 7080 motors if motor is only going to see 2300-2400rpm and If there is nothing else available? |
Posted By: DrAllis
Date Posted: 07 Feb 2023 at 9:13am
| Could be. Diameter of the pulleys the same?? Higher HP and higher RPM's is why they had to get away from rubber type. |
Posted By: DMiller
Date Posted: 07 Feb 2023 at 11:43am
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If no one is making or rebuilding these dampers these engines will be grenade potentials within a few years. This is not a IF, is a WHEN. All technical manuals for diesel engines with Viscous Dampers notate these need to be rebuilt or replaced at intervals. |
Posted By: DrAllis
Date Posted: 07 Feb 2023 at 12:29pm
| Hopefully, the one from a 4-71 Detroit will fit. |
Posted By: 8070nc
Date Posted: 07 Feb 2023 at 2:46pm
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Injpump Ed came up with a Dertiot#5177763 from a 3/71 4/71 6/71. If its not the same its mighty close to the Allis damper Between all of us we will gind a solution ------------- 1984 80780 1957 D14 DES 300 with 25000 engine 616 tractor |
Posted By: MikeKroupa
Date Posted: 07 Feb 2023 at 7:58pm
|
Very good and informative conversations here for sure, In reference to Darrel's and Doc's post concerning crankshaft nose breakage. We had a neighbor that purchased a new Series 3 N5 in 1983. Really got along good with the machine until the fall of 1988 when the nose of the crank broke clean off. Didn't tear anything up and he didn't realize it had happened until the coolant temperature light came on. Catastrophic failure none the less, but at least it was only the crankshaft., Mike I forgot to add that my 7080 has 9300 hrs. on original dampener, probably won't run WOT until I change it out!
|
Posted By: orangereborn
Date Posted: 08 Feb 2023 at 9:00pm
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darrel in ND wrote:Posted By: Mikez
Date Posted: 08 Feb 2023 at 10:31pm
| We have a 8050 that had cracked block. Bought a running 8070 motor from a junk yard. We might be swapping pumps out. Wondering after reading all this. Should we take fluid balancer off. |
Posted By: DrAllis
Date Posted: 08 Feb 2023 at 10:36pm
| You either use it or replace it with new. Cannot operate without one. How good do you think a 40 yr old fluid damper is ?? |
Posted By: wekracer
Date Posted: 09 Feb 2023 at 8:33am
| I'm making a mental note of this for future reference as my 8070FWA is still my big horse. |
Posted By: DMiller
Date Posted: 09 Feb 2023 at 9:58am
|
Just a reference. When I replaced my CAT Damper there was no core so cut the old one open. This is result. Gel almost all glue like, nothing to flow, to move the internal ring Had to use a Pry Bar and Hammer in the Cut Groove.  |
Posted By: DanWi
Date Posted: 09 Feb 2023 at 11:34am
| IF you had a motor that was lucky to be closer in balance, would it make less of a difference then a motor that was farther out of balance? Or if the motor was being ran when the fluid in the balancer began to solidify verses a motor that sat for months without running and the balancer solidified and made it way out of balance? |
Posted By: DrAllis
Date Posted: 09 Feb 2023 at 11:58am
| It is not a "balancer" like adding weights to a car tire. It is a harmonics vibration damper. Harmonics at certain engine speeds and load like a guitar string vibrating. It tryies to cancel out these harmonics vibrations by the donut starting and stopping all while the outer shell rotates. With the silicone fluid missing (leak) or solidifying (old age) the donut can't do its intended job. |
Posted By: SteveM C/IL
Date Posted: 09 Feb 2023 at 2:04pm
| Maybe someone can convince TCI to make their "Rattler" damper for our Allis applications. The cam gear on my C15 Cat has that design built in it. |
Posted By: TramwayGuy
Date Posted: 09 Feb 2023 at 4:07pm
|
“IF you had a motor that was lucky to be closer in balance, would it make less of a difference than a motor that was farther out of balance?” You can have Perfect balance, and you still need a harmonic balancer. The piston movements and combustion effects cause a slight back-and-forth twisting of crankshaft that causes large stress reversals and the harmonic balancer helps to cancel them out. The flywheel end has a much larger mass so it pretty much is its own dampener. More here: https://www.dieselarmy.com/tech/engine/how-it-works-viscous-dampers-a-k-a-harmonic-balancers/" rel="nofollow - https://www.dieselarmy.com/tech/engine/how-it-works-viscous-dampers-a-k-a-harmonic-balancers/ |
Posted By: DrAllis
Date Posted: 09 Feb 2023 at 6:41pm
| That is a very informative article on fluid filled dampers. A very good read. Thank you for posting. |
Posted By: CrestonM
Date Posted: 13 Sep 2023 at 9:03pm
I decided to give it a try, so I purchased a Vibratech dampener for a Detroit 71 series. As far as I can tell, it's a perfect match. Attached are a couple photos of the old and new, plus one photo of the old one cut open in case anyone was wondering how much space there is between the inner ring and the outside. Not much room for fluid, but then again, this isn't exactly fluid any longer.   |
Posted By: DrAllis
Date Posted: 14 Sep 2023 at 6:06am
| Now, you can see why we've always been told to handle with care !! There cannot be any dents or physical damage of any kind to the outer shell or the damper is junk because the donut cannot float inside the silicone filled shell. |
Posted By: SteveM C/IL
Date Posted: 14 Sep 2023 at 12:12pm
| Share the part number please..... |
Posted By: CrestonM
Date Posted: 14 Sep 2023 at 1:02pm
|
Here is the link to the website I ordered it from: https://klmperformance.com/products/detroit-diesel-series-71-crankshaft-damper" rel="nofollow - https://klmperformance.com/products/detroit-diesel-series-71-crankshaft-damper |
Posted By: CrestonM
Date Posted: 14 Sep 2023 at 8:31pm
| Got it painted yesterday, and installed tonight. What a difference! Before I could run at 1/2 throttle or above and the top of the exhaust stack would vibrate what seemed like 1/8” side to side from center, although that’s just a guess and it may not have been that exact. After installing this new dampener, I ran it all the way to full throttle and I couldn’t tell any movement in the exhaust pipe now. I’ll note that I don’t have any other warning signs of a bad dampener like broken alternator or A/C compressor brackets. I just did this as a preventive measure given that I’m sure the old one was original with the yellow primer and maroon paint on it, and I’m glad I did it. |
Posted By: DrAllis
Date Posted: 14 Sep 2023 at 10:55pm
| If the one you cut apart didn't have any gel like goo inside of it, it was BAD !!! |
Posted By: CrestonM
Date Posted: 15 Sep 2023 at 2:53pm
|
You are correct, it did not have any gel-like fluid left. But I wouldn’t have known had I not cut it open, so it would’ve been rendered bad at that point, too, regardless. Just glad I did it. A lot cheaper than a broken crankshaft. Also the actual part number for those who asked is Vibratech viscous damper 713398-000. |
Posted By: DrAllis
Date Posted: 15 Sep 2023 at 3:12pm
| The only two I've ever had to diagnose had an awful rattling noise in the timing gears at 2500 to 2550 RPM's. How many $$$$ did the VibraTech one set you back ?? |
Posted By: injpumpEd
Date Posted: 15 Sep 2023 at 3:41pm
|
price on the link says 498 ------------- 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! |
Posted By: Mikez
Date Posted: 16 Sep 2023 at 7:49am
| I would think any originals are no good and should be replaced |
Posted By: 8070nc
Date Posted: 16 Sep 2023 at 8:50am
|
I started this threadbecause ive got a 8070 that I thought I i had rod knock in. Pulled the pan to checj the bearings. They looked new. After much talking to different people I figured out it must be the damper. Bought a new old stock damper and installed it. Its better but not right Im going to get a new vibratech damper and put on it ------------- 1984 80780 1957 D14 DES 300 with 25000 engine 616 tractor |
Posted By: BrianC
Date Posted: 16 Sep 2023 at 8:55am
|
Interesting device. Tighter fit than imagined. What we (the Allis Community) need is a database of alternative parts. Can't expect each dealer or vendor to know it all. Could expect AGCO to do it, but they may be scared for liability issues.
|
Posted By: orangereborn
Date Posted: 16 Sep 2023 at 10:44am
| The consistency of the silicone originally would have been about like 30 weight oil....Dale |
Posted By: SteveM C/IL
Date Posted: 16 Sep 2023 at 12:55pm
| I got a NOS one 2 yrs ago from AGCO. $1400 and you know it's old. Wonder if silicone goes bad with time or use? For the money it might be smart to buy one from Vibratech. |
Posted By: 8070nc
Date Posted: 16 Sep 2023 at 1:23pm
|
Its cheap insurance Better than losing a counterbalanced crank I dont thimk a good one would be that easy to find ------------- 1984 80780 1957 D14 DES 300 with 25000 engine 616 tractor |
Posted By: NEVER green
Date Posted: 16 Sep 2023 at 1:36pm
Keep in touch if it helps! ------------- 2-8050 1-7080 6080 D-19 modelE & A 7040 R50 |
Posted By: DrAllis
Date Posted: 16 Sep 2023 at 4:55pm
| The silicone definitely goes bad over time with use. Some engine manufacturers (Cat, Detroit, etc) even say to replace them at Ohaul time or at a certain hour interval because of that possibility. Go bad over 20 years of sitting on a shelf ?? Can't answer that. |
Posted By: BrianC
Date Posted: 16 Sep 2023 at 5:16pm
| https://www.dieselarmy.com/tech/engine/how-it-works-viscous-dampers-a-k-a-harmonic-balancers/" rel="nofollow - https://www.dieselarmy.com/tech/engine/how-it-works-viscous-dampers-a-k-a-harmonic-balancers/ |
Posted By: 8070nc
Date Posted: 16 Sep 2023 at 6:07pm
|
Itll probably be a month or so before i get the new damper but ill surely post the results ------------- 1984 80780 1957 D14 DES 300 with 25000 engine 616 tractor |
Posted By: MACK
Date Posted: 16 Sep 2023 at 8:27pm
| Had one go bad on pulling tractor. Didn't take long to shake flywheel bolts loose. MACK |
Posted By: Kevin in WA
Date Posted: 17 Sep 2023 at 9:56pm
| I put a new Vibratech one on last spring and it fit perfectly and runs nice. |
Posted By: 8070nc
Date Posted: 09 Oct 2023 at 6:26pm
|
I just put a new vibratech on my 8070 and it made a big difference. It would flutter about 1800 but it doesnt do that now ------------- 1984 80780 1957 D14 DES 300 with 25000 engine 616 tractor |
Posted By: SteveM C/IL
Date Posted: 12 Nov 2023 at 10:11pm
| I purchased 2 of these and replaced on both 8070's. Exact fit/replacement. So yes! The 4-71 Detroit balancer is what you need for your Allis. I've at least got peace of mind. Someday I'll cut open the old ones to see how they were...even the $1400 NOS AGCO one! I won't use it and wouldn't expect anyone to buy it. Will be interesting to see what father time did or didn't do to It. |
Posted By: cowkicker
Date Posted: 26 Feb 2024 at 3:14pm
| okay. I need one for my 8070. Do I just go to KLM and order the Detroit Diesel 71 series damper like the Vibratech one shown in the picture? Thanks |
Posted By: 8070nc
Date Posted: 26 Feb 2024 at 5:13pm
|
I called vibratec and they gave me the name of a local dealer. He ordered it. It was around 650.00. Fit perfectly. Itvwas for a 4-71 or 6-71 detroit ------------- 1984 80780 1957 D14 DES 300 with 25000 engine 616 tractor |
Posted By: 8070nc
Date Posted: 26 Feb 2024 at 5:16pm
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The part number is in this thread somewhere ------------- 1984 80780 1957 D14 DES 300 with 25000 engine 616 tractor |
Posted By: 8070nc
Date Posted: 26 Feb 2024 at 5:18pm
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P.S. They were very helpful at vibratec ------------- 1984 80780 1957 D14 DES 300 with 25000 engine 616 tractor |
Posted By: cowkicker
Date Posted: 26 Feb 2024 at 5:19pm
D0 you happen to still have the vibratech #. was it 713398-000?
|
Posted By: 8070nc
Date Posted: 26 Feb 2024 at 6:01pm
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Yes ------------- 1984 80780 1957 D14 DES 300 with 25000 engine 616 tractor |
Posted By: cowkicker
Date Posted: 26 Feb 2024 at 6:10pm
| Great. gonna order one! Thanks for the help |
Posted By: SteveM C/IL
Date Posted: 28 Feb 2024 at 10:10am
| Note to all....comes with instructions saying not to paint mating surface or even front face where bolts go. The back side I understand. My originals were unpainted on the mating surface. Couldn't really tell about front face. |