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Massey Harris & Massey Ferguson Tractors Discussion Forum
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MH135 oil pressure adjustment

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oldtobac

10-25-2007 09:49:04




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Can anyone advise me where the engine oil pressure adjustment is on the 3 cylinder diesel perkins motor fitted to a MF135? The 4 cylinder motor had the adjustment on the oil filter but the 3 cylinder is different.




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DavidP, South Wales

10-25-2007 13:47:34




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 Re: MH135 oil pressure adjustment in reply to oldtobac, 10-25-2007 09:49:04  
Hi,
Altering the pressure of the pump is something that is not generally done on 3 cylinder engines.
Due to the amount of work in removing the sump it is a hit and miss affair. You can probably pack up the spring with a washer or two but if you have low oil pressure then you probably have wear in the pump or in the bearings. If you believe the rest of the engine to be OK it would be better to consider a new pump. DOn't forget to check the condition of the idler gear between the crank gear and oil pump gear. If this shows any sign of wear replace it. A worn idler will 'howl'.
Something you could try as a short term measure would be to use a heavier engine oil and with winter coming this would depend on your location.
DavidP, South Wales

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MF Poor

10-25-2007 13:34:38




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 Re: MH135 oil pressure adjustment in reply to oldtobac, 10-25-2007 09:49:04  
The pressure relief is incorperated into the oil pump. It's a spring and plunger affair. You'll have to pull the oil pan to get at it.



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