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Farmall & IHC Tractors Discussion Forum
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Low oil pressure

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G Spence

10-29-2007 10:56:54




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Will a worn crankshaft or worn main/rod bearings cause low oil pressure in a bd-154?




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john in pennsylvania

10-29-2007 13:02:39




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 Re: Low oil pressure in reply to G Spence, 10-29-2007 10:56:54  
what are the hours on the engine? Also what machine is it in?



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G Spence

10-29-2007 13:16:35




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 Re: Low oil pressure in reply to john in pennsylvania, 10-29-2007 13:02:39  
I was told the engine is out of a 2444. It is in a 3414 backhoe. When I got the bd154 it had a cracked block and it had been taken apart about 8 years ago,so it has been a real project putting it back together. I was told it had been rebuilt shortly before it shot sparks out because of water in the oil on a cold morning, but from learning the hard way with wear to the bearings, I don't think that was true so I don't know how many hours it has, probably quite a few. The short time I had it running it sounded good and didn't smoke.

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the tractor vet

10-29-2007 11:02:22




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 Re: Low oil pressure in reply to G Spence, 10-29-2007 10:56:54  
Yes , along with wore cam bearings oil pump. And the weight of oil used in an engine . Also have you checked with a good test gauge ???



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G Spence

10-29-2007 12:33:59




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 Re: Low oil pressure in reply to the tractor vet, 10-29-2007 11:02:22  
I used a set of test gauges, not the dash gauges. I assumed the test gauges were working fine, could that have been a mistake?It has new pistons, sleeves, rings and valve job. I used rotella 15-40 wt. The presuure started at 30 lbs. and in about 20 minutes dropped to 10 or less. I pulled the pump and it was clean and the valve and spring working and it was only slightly out of tolerance about 0.009. The crankshaft bearings were worn to the copper. the crank had been turned already the bearings were .030

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