oil pressue
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Cruiser
Joined: Jun 2012
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From: North Bend Ohio
oil pressue
fired up and ran the new bagger today with the new 90 shovel. Motor ran great but seems to have an oil pressure problem which I believe is caused by the relief spring. About how much downward pressure should be on the spring with the cap on. It has the thimble style valve piston under the spring. Not sure what make of the pumps is, but seemed to work well on the old motor before I stoked it. The builder has a great reputation for building shovels, so I'm looking into the pump before I question the clearances. motor is primary belt drive and has been since 1981
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From: la la land jerzey
with out a picture this is all a guess - BUT my guess is you have an adjustable ADD on valve to the out side oil plug on the oil pump --
Yes they work No i would not do it that way if it were mine -- to increase the oil pressure you turn it ( in or down ) what ever meets your understanding to increase the oil pressure -
please note at some point and i am sure your builder is a good guy you wont be able to get the oil pressure to increase HOT < you must be carefull at this point COLD oil pressure can and will be over 100LBS and that will cause problems IE leaking and excess wear on the pump and other things < reason i dont care for that oil pump pressure fix -- i use the 10 pound spring replacement methiod 3 different color springs 10 pounds difference between them -- just my take hope you get it right -- jz
Yes they work No i would not do it that way if it were mine -- to increase the oil pressure you turn it ( in or down ) what ever meets your understanding to increase the oil pressure -
please note at some point and i am sure your builder is a good guy you wont be able to get the oil pressure to increase HOT < you must be carefull at this point COLD oil pressure can and will be over 100LBS and that will cause problems IE leaking and excess wear on the pump and other things < reason i dont care for that oil pump pressure fix -- i use the 10 pound spring replacement methiod 3 different color springs 10 pounds difference between them -- just my take hope you get it right -- jz
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Cruiser
Joined: Jun 2012
Posts: 184
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From: North Bend Ohio
Motor has low oil pressure. Lifters collapse at idle. Jumps to 10 lbs when I rev it then back to near zero. Looking for a possible problem. Thought it was the pressure spring but it isn't. I think the pump is bad. Pretty sure motor bearing clearances are good since motor is new and built by very reputable guy. Is it possible its the 25-50 oil i'm using? I used this because it's been cold here.
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From: Michigan 15 Minutes East Of Hell
Don't forget that the lower end bearings are all roller bearings ( no flat bearings ) Flat bearings with excessive clearance would cause low oil pressure readings. I never used the "adjustable" valve in the pump. As "Johnjzjz" pointed out there are a variety of colored springs ( I think they are red, green and gold if I remember correctly ) available to change the operation of the pressure valve. Be sure that you're using the correct oil ( stay away from the synthetics ). Remember that at idle with a pressure gauge on your scooter your pressure reading will be almost non-existent when the engine is warm ... At operating temperature going down the road an optimum reading will be somewhere between 25 and 30 lbs. Be sure that all the oil hoses are routed correctly and that non are kinked. Also take a look at the oil returning to the tank ( to be sure that it's circulating ) and be sure that "foaming" isn't a problem. Some oils will have a tendency to foam excessively and that will lead to a low/no pressure reading also. And one last thing ... Call your "builder" and explain the situation to him and ask for his input also!!!
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Knucklehead1941
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Jun 15, 2008 08:21 PM
