Farm Equipment - Agco allis 6690 engine rebuilding

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Agco allis 6690 engine rebuilding

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=153760
Printed Date: 08 Jul 2025 at 2:41am
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Topic: Agco allis 6690 engine rebuilding

Posted By: kinghunter
Subject: Agco allis 6690 engine rebuilding
Date Posted: 07 Sep 2018 at 11:10am

Called around and having trouble finding any sort rebuild kit for these air cooled tractors anyone have any luck getting a kit anywhere? Would like get this tractor up running again

Replies:

Posted By: Ryan Renko
Date Posted: 07 Sep 2018 at 8:12pm

We also have a 6690. It has been a good tractor for us but in hindsight we most likely shouldn't have bought it as getting repair parts in the future will be a huge problem. I know they were built by the SAME company in Italy. Maybe you could expand your search there if you speak the language. Ryan

Posted By: DrAllis
Date Posted: 07 Sep 2018 at 8:13pm

So, an AGCO Dealership can't get you the parts ???

Posted By: tbran
Date Posted: 07 Sep 2018 at 10:20pm

never was a "kit" - we always just fixed what was bad... have some with 10,000 hours... any parts not available thru Agco can be found thru a Deutz dealer. Unlike Deutz one cannot change pistons w/o pulling rods aka dropping the pan. Same Deutz Fahr are all under deutz and parent company seems not so 'friendly' in pricing parts to agco... a lot of parts are much cheaper thru Deutz

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When told "it's not the money,it's the principle", remember, it's always the money..

Posted By: JohnCO
Date Posted: 08 Sep 2018 at 12:14am

I didn't know there was any connection between Same and Deutz, being German and Italian. Learn something new every day!

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"If at first you don't succeed, get a bigger hammer"
Allis Express participant

Posted By: Alvin M
Date Posted: 08 Sep 2018 at 10:42am

Deutz And Same Or Not The Same Engine

Posted By: kinghunter
Date Posted: 11 Sep 2018 at 2:43am

Thanks guys. Found individual parts through a deutz dealer. No kits. And dr. Allis I called three dealerships and all three told me no parts available for them models. Thanks again all.

Posted By: hoffmanfarms
Date Posted: 14 Mar 2019 at 11:57am

Hi there! I have a couple Agco Allis's from 1995. 6680 and 6690. The 6680 is ready for an overhaul. I want to keep this tractor going, as they are awesome in vegetable production with the creeper gear and great fuel economy. Can you send me a phone number where you got the parts to do an overhaul? And maybe the costs and any gotchya's? I have a 40 year experience mechanic from John Deere as my neighbor and is willing to do the overhaul if I can get the parts.

Thanks, I really appreciate it!

Posted By: tbran
Date Posted: 14 Mar 2019 at 1:35pm

Check Agco vs Explorer 80 SAME from a Same Deutz Fahr or Deutz Fahr dealer.

Make sure the engine is non turbo'd piston and you will need some measurements to order parts. Look it up in agcopartsbooks.com as to head gasket shim thickness and oring thicknesses around the sleeve.

Sutter Bros in Coldwater is one...

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When told "it's not the money,it's the principle", remember, it's always the money..

Posted By: hoffmanfarms
Date Posted: 14 Mar 2019 at 3:45pm

Thanks Tbran! Yeah, I knew the 6680 was the same tractor as the Explorer 80. I actually got a quote from SAME out of Italy for a complete Rebuild Kit for the SLH 1000.4-AT engine at $1600 with shipping. Since I have never done this before, I wasn't sure if that was a good price or not. I wanted to check around in the states before ordering from them direct. Knowing the information you posted, along with the Sutter Brothers in Ohio helps out a lot! Thanks for the quick reply! I know its going to be a project for sure.... but still cheaper doing this then trying to buy a replacement tractor.

Posted By: Amos
Date Posted: 14 Mar 2019 at 4:36pm

Not engine rebuild but just got the parts for the FWA final drive that someone ran until the wheel would no longer turn...same model as yours...your engine overhaul kit price is less than 1/3 of the price of the final drive parts...not happy at home tonight....

Posted By: victoryallis
Date Posted: 14 Mar 2019 at 5:11pm

Not sure what name they go by but I’ll give you both options. Either it’s West Michigan Diesel or Johnson diesel in Wayland Mi. When we had the Duetz powered R52 we had their number stashed everywhere. At the time I felt they were good folks to deal with.

Edited to add link
https://westmichigandiesel.com/" rel="nofollow - https://westmichigandiesel.com/

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8030 and 8050MFWD, 7580, 3 6080's, 160, 7060, 175, heirloom D17, Deere 8760