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Tractor Talk Discussion Forum

oil pump problems

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tader

01-15-2007 10:33:44




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i have a 1950 b and it has no oil pressure the pump gears are good what should i try




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Maark

01-15-2007 11:28:58




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 Re: oil pump problems in reply to tader, 01-15-2007 10:33:44  
The pump shaft coupler is broken. Common problem when water freezes in the bottom of the crankcase. It is available from your JD dealer. Search archives for directions on replacement.



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tader

01-15-2007 19:52:27




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 Re: oil pump problems in reply to Maark, 01-15-2007 11:28:58  
can u replace it without pullin th whole engine can u get to it by taking the steering pedistal
off



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Jerry/MT

01-15-2007 10:47:42




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 Re: oil pump problems in reply to tader, 01-15-2007 10:33:44  
There are several reasons for no pump pressure. Either the pump is shot, the drive gear retainer sheared so it doesn't turn with the drive shaft, the pump is not recieving oil from the suction feed tube, or the pump outlet is unrestricted. (This assumes the mains and rod bearings do not have excessive clearanaces, etc.)
Make sure the suction feed tube to the pump has no cracks or bad seals and is not blocked. If it has a screen, make sure it is not restritced. Make sure that the relief valve is not stuck wide open or has a broken spring. Make sure the housing and the outlet are not cracked or broken. Makes sure the drive gear is securely fastened to the drive shaft.

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