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Massey Harris & Massey Ferguson Tractors Discussion Forum
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240 In-frame

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Tim Lockey

04-21-2007 18:06:55




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I am wondering if it is possible to remove the oil panfrom my 240 ('86 ad152} and do an in frame inspection of the piston rings to find the cause of excessive breather tube blowby.Question: Are there some hidden oil pan bolts that i cannot access without splitting the tractor? The last time i had this tractor apart,i had a really hard time joining it back for some reason, and I can't recall the arrangement of the oil pan bolts or if there are any hiding out of view.Appreciate any help/advice.

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David in Wales

04-22-2007 08:27:48




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 calling DavidP in South Wales in reply to Tim Lockey, 04-21-2007 18:06:55  
Hey David;
Where are you situated?
I am at Dinas Cross 3 miles north of Fishguard on the Cardigan road.
Cheers David



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DavidP, South Wales

04-23-2007 01:08:26




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 Re: calling DavidP in South Wales in reply to David in Wales, 04-22-2007 08:27:48  
Hello David,
We are just north of Bridgend.
DP



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DavidP, South Wales

04-22-2007 04:35:34




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 Re: 240 In-frame in reply to Tim Lockey, 04-21-2007 18:06:55  
Hi Tim,
There is no reason why the sump cannot be removed with the engine in place. If you have a loader or anything else fitted that may cause a problem. As to an inspection of the rings, NO. The best you might be able to to do is inspect each bore with the piston at TDC. You will not see much. I would suggest a compression test as a first step. If one is down or all down on pressure then you will have a clearer idea where to look. Removing the cylinder head AFTER a compression test would be a better move. Cheers
DavidP, South Wales

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Tim Lockey

04-22-2007 18:23:40




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 Re: 240 In-frame in reply to DavidP, South Wales, 04-22-2007 04:35:34  

Thanks David for your reply. I thought I would add a bit of info as to how I got down this path in the first place. This tractor developed terrible blowby thru the vent tube. Though I skipped the step of a compression test, upon removing the head, I discovered a badly blown head gasket between cylinders. I suspect that this would not explain the blowby.If you or others have some insight into this, it would be much appreciated. The next step I planned to take was to attempt an inspection/removal of the pistons/rings in frame. Is this possible? thanks.

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DavidP, South Wales

04-23-2007 01:31:58




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 Re: 240 In-frame in reply to Tim Lockey, 04-22-2007 18:23:40  
Hi Tim,
Two possibilities occur;
Excessive wear in the valve guides and a broken or seized ring or rings on one or more pistons or general wear.
Once the sump is off the pistons are easy to remove. When the con-rods are disconnected and clear of the crank journals, use the HANDLE of a long hammer and tap the piston upwards gently.If they are the original pistons they should be numbered on the main pump side. Con-rods are numbered on the pump side. If you can't find any markings make a sketch of the position of the toroidal cavity or make your own mark to ensure they are refitted correctly. Look for damaged or broken rings and also the expander rings inside the main rings. DavidP, South Wales

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