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tractorman 
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Joined: 22 Sep 2009
Location: west central wi
Points: 1046
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 Topic: 7010 or 700 series and electrolysis
Posted: 23 Apr 2012 at 6:15pm |
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I was just told that the 7010 and the 7000 series have an issue with electrolysis in the block and radiator that could lead to sleeve problems and perhaps early engine rebuilds and that the antifreeze must have routine replacement and maybe even a special filter. Is there any truth or even half truth to this?
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Play on 38 B 49 WF , working on D14, D15 B10, Bee 12 B110. use 185 and 190
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Austin(WI)
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Joined: 11 Sep 2009
Location: Wisconsin
Points: 1460
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Posted: 23 Apr 2012 at 6:58pm |
I don't think it is exclusive to the 7000 or 7010. I think you are suppose to change it every couple years or so in any engine because of that happening.
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"Better By Design"
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CTuckerNWIL
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Joined: 11 Sep 2009
Location: NW Illinois
Points: 22825
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Posted: 23 Apr 2012 at 7:27pm |
Causes of Cooling System Electrolysis Corrosion
Cooling system electrolysis corrosion can be caused by two things:
Worn out coolant. This is usually the result of not changing
your coolant often enough. Over time, the corrosion inhibitors in every type of coolant
wear out. For traditional green formula coolants, this can occur after two or three
years or 30,000 to 50,000 miles. With "long life" OAT and HOAT formula coolants, the corrosion
inhibitors may no longer be able to protect your cooling system after five years or
100,000 miles, which ever comes first (not last!). Once your coolant turns from alkaline to
acidic, electrolysis starts to eat away at the metal surfaces inside your cooling
system. Sooner or later your cooling system will start to leak.
Stray electrical currents in the coolant. Worn out coolant is more electrically
conductive than good coolant. Also, the coolant can serve as an alternate path to ground
for your vehicle's charging system and electrical system if there is not a good ground
connection between the engine, charging system and body (chassis). Loose, corroded, broken
or missing ground straps between the engine and chassis are a common cause of this type
of electrolysis corrosion.
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DougG
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Joined: 20 Sep 2009
Location: Mo
Points: 8338
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Posted: 23 Apr 2012 at 9:09pm |
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Seems that anything in the 301engine after themodel 200 tractor was produced is bad for that, theres something u can put in the water to prevent this
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SteveM C/IL
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Joined: 12 Sep 2009
Location: Shelbyville IL
Points: 8612
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Posted: 23 Apr 2012 at 9:15pm |
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301's are worse than 426's and it's the bottom liner bore that seems to get eat the worst VS the liner.Monitor with test strips form "big truck" shops and add CSA as needed. That is what a water filter essentially does.
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MACK
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Joined: 17 Nov 2009
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Posted: 23 Apr 2012 at 10:06pm |
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Any wet sleeve engine can have this problem. AC engins are not the worst at this. MACK
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SHAMELESS
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Joined: 13 Sep 2009
Location: EAST NE
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Posted: 23 Apr 2012 at 11:21pm |
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my 7010 has a water filter on it from the factory....i change it every spring! don't know about the 7000's
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pirlbeck
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Joined: 01 Dec 2009
Location: West Central IA
Points: 229
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Posted: 24 Apr 2012 at 8:07am |
Baldwin Filters has a farm equipment maintenance
guide that is very good and has a section on cooling system maintenance that
goes into the reason why this happens and how to prevent it. Here is a link to
the guide, let if load fully (the first part is an application guide) and then
go to page 1087 "Cooling System Maintenance For Heavy Duty Engine". Pay
particular attention to the paragraph titled "How do SCAs prevent liner
pitting." The whole maintenance section is very good and worth a read if you
have time.
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