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| Minneapolis Moline Tractors Discussion Forum |
Topic: RTU low oil pressure
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| Tyler J
07-31-2012 18:58:29
50.96.11.144
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Last winter I overhauled my 39 RTU. It has all new main and rod bearings. The engine was completely disassembled and washed in a steam cabinet, and all parts were thoroughly cleaned before reassembly. After putting it together, it had about 25 lbs of oil pressure. It worked great all year. When I took it out of the shed this spring, the oil pressure jumped to 25 lbs, but dropped back to about 5 lbs right away. Does anyone have any ideas as to whats going on here? Any suggestions on how to fix it? Any help would be great.
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| Tyler J
08-01-2012 20:18:45
50.96.9.213
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Re: RTU low oil pressure in reply to Tyler J, 07-31-2012 18:58:29
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| | I got problem fixed. It was the oil. I guess I put 10W 30 in when I put the motor together. I pulled the crankcase cover, pulled out the oil pick up screen and noticed a thin clear latex-like film covering the screen. It must be from the detergent oil. I cleaned the screen, put straight 30 weight in and have great pressure. Thanks for your help
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| J.Wondergem
08-01-2012 06:51:59
70.194.5.144
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Re: RTU low oil pressure in reply to oros35, 07-31-2012 18:58:29
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Check the relief valve, and see if you have a booger caught in it.
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| J Wuertz
08-01-2012 12:07:32
74.36.114.184
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Re: RTU low oil pressure in reply to J.Wondergem, 08-01-2012 06:51:59
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| Did you put dertegent oil in the crankcase? This happened to me when I put some 10W30 in the engine. The engine ran fine for a while and then the oil pressure dropped. I drained the oil and it was was looking pretty bad. I refilled with straight 30 and changed the filter and it is working good now.
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