Agco Allis 6680 Question
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=145882
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Topic: Agco Allis 6680 Question
Posted By: RLG
Subject: Agco Allis 6680 Question
Date Posted: 27 Dec 2017 at 8:39pm
Do 1991 Agco Allis have glow plugs? Mine doesn't start in cold weather without a battery charger boosting it and ether. Put on new batteries and it still turns over slow.
Thanks!
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Replies:
Posted By: MACK
Date Posted: 27 Dec 2017 at 9:03pm
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Have saw some that got sea water in cables on boat over here. Replace cables. MACK
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Posted By: kinghunter
Date Posted: 27 Dec 2017 at 9:59pm
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I have the bigger brother the 7600. I put one of them oil pan heaters on mine and park it in out of wind. It heats pan and oil then heat rises through oil to cylinders in return easy cranking. Faster starts. I do know they do not handle ether well. Be carefull not give to much you be motor shopping
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Posted By: Lonn
Date Posted: 28 Dec 2017 at 5:59am
I remember a service school on these Same built tractors. They were terrible to start in North America's cold weather. Most were bought back by AGCO and reworked at Coldwater Ohio with a bigger starter, bigger battery, which needed a bigger battery tray, and heavier cables. They couldn't, at that time, get the Italians to build them right even though AGCO owned most of the Same company. This would have been an AGCO service school I attended in about 1993 or 1994. The AGCO rep at the service school, whose name was Paul ........ I forget his last name, but he was from SE Minnesota, he had a lot of colorful language when he started talking about trying to work with those stubborn Italians. He wasn't happy.
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Posted By: Ryan Renko
Date Posted: 28 Dec 2017 at 5:59pm
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Our 6690 came equipped with a factory preheater. You simply turn the key counter clockwise until the light on the warning panel comes on. The manual says ether was a factory option. The best option for us was installing a air chamber heater kit from Agco part# 71287240. You plug it in about a hour or two before you plan to start it. Hopefully this might help. Ryan
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Posted By: tbran
Date Posted: 28 Dec 2017 at 9:59pm
SAME engines are no different than any diesel . IF one goes to any diesel in cold weather and it turns slow - it will not crank. As described above the battery cables were not heavy enough and of poor quality. Install either a 4DLT or two heavy group 24 batteries - they will fit if turned for and aft - install two grounds, one from each battery and one heavy or two positive cables to the starter. We also install a slave solenoid activated by the key switch trigger wire to get full voltage to the solenoid. I thought all the 6600's had the thermo start system like the 170AC had. Ours did..I think.. We installed a soft drop light with a rough service bulb between the injector lines and the cylinders - reinstall the chamber cover- join this with a 2 amp trickle charger and if left plugged it they will fire off on coldest day - ok maybe down to 15. The drop light bulb and trickle charger will cost less for a year than the chamber heater running one day. The last series did have a much better air heater system. (the slh same engine was susceptible to ether damage with a good starter.) The 7600 and 4650 and 4660 had a retard knob on the pump rack - we told every one just to tie it up for the winter for feeding - it does by pass the max fuel stop and then will go into retard if pulled hard. Anyway they were very difficult to start w/p popping the button.
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When told "it's not the money,it's the principle", remember, it's always the money..
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Posted By: RLG
Date Posted: 28 Dec 2017 at 10:03pm
Thanks for the help. After removing the engine cover enough to get a look, I discovered it had an air chamber heater under there for warming the engine and fuel lines. It had a plug end for 120 volt AC. It still worked. That will have to help!
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