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ericjen

Leaking headgasket on 7220

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Local shop says remove the head and have it planed. Then check head bolts to see if they are stretched. I thought these engines were bullet proof. Guess not.

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I don’t think head gasket leakage is real unusual on Magnums.  My brother’s second 7140 had a seeping head gasket when he got it.  Not a huge deal.

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24 minutes ago, ericjen said:

Local shop says remove the head and have it planed. Then check head bolts to see if they are stretched. I thought these engines were bullet proof. Guess not.

No engine is bulletproof without maintenance. Regular coolant and oil changes are important.

Travis

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8 hours ago, Sparky said:

No engine is bulletproof without maintenance. Regular coolant and oil changes are important.

Travis

X2

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I have put in a couple head gaskets and the two I did had broken head bolts in the right rear corner . Make sure you clean the block, head , tap holes out , wipe head a block down with brake clean and then paint the head gasket with 4 even coats of alluminum spray paint . When the last coat of paint is on set it on the block and set the head straight down not sliding it around . Put all new head bolts in and start the torque at 25,50,75,100,125,150 ft lbs then to spec . Cummins has there torque plus method , I have the service manual from Case IH and on the early motors they gave a standard old way to torque the bolts /like IH did so I have been doing them that way with no trouble .

Danny 

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On the "C" series engine there is multiple different procedures depending on what bolts you have, new bolts & original block, new bolts & new head and so forth. I have it in a condensed quick reference and can send to you if you want. ***note a 7220 should already have the (torque to yield) bolts identified by (T+90<) marking on head***

As others said no engine is bullet proof, however the "C" series have been an above average engine (IMO) I have seen head gasket leaks on them, most times about midway back on left (inj pump) side. 

In 25 + years of working of farm tractors the biggest cause of problems I see are the lack of a good PM program. 

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The headgasket leak is slight, so slight that it wasen't noticed until I noticed a fuel filter was was leaking fuel. Further investigation show a stain on the front of the block. Coolent could be found only after the tractor sat after a day. She is headed for the shop next week. 

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We had three head gasket leaks on our 8950 before 5000 hours. It's now at 16,500 hours  and we have 7 of these Magnums averaging over 12,000 and that's the only one we have changed so far. Pretty bullet proof engine imo

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On 8/17/2018 at 7:31 PM, Sparky said:

No engine is bulletproof without maintenance. Regular coolant and oil changes are important.

Travis

 

On 8/18/2018 at 3:49 AM, jass1660 said:

X2

Agreed, and no offense but you can add how it was driven, we have a few guys at work that I think can break a truck riding in the back seat.  

 

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