Can someone please confirm what the overall FREE length of the Oil Pump Check Valve Springs should be?
703-36 = Original part number
26363-36 = Revised part number
I believe their free length should be 1-9/32".
(Mine came out of the pump measuring less; thus seem sot be worn)
I ordered 2 new springs & their overall free length is 1-3/4"; way taller.
New springs are in the image on the left side; mine are on the right.
AND....
I'm into this oil pump / scavenger pump exploration, as my bike sumps & spits out a LOT of oil if left for a month.
Is this normal for the 45 model?
Thanks
1949 WL - Oil Pump Check Valve Springs
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Re: 1949 WL - Oil Pump Check Valve Springs
Sumping has always been a big problem on ball-controlled oilflow bikes like Harleys and many a Brit bike..
Sometimes relapping a ball into the pump housing will solve it, often not permanently..
Oil-seeping can also occur through the pumpgasket.
In an attempt to cure my sumping problems..I installed a checkvalve in the feedline.
But that's me..
Sometimes relapping a ball into the pump housing will solve it, often not permanently..
Oil-seeping can also occur through the pumpgasket.
In an attempt to cure my sumping problems..I installed a checkvalve in the feedline.
But that's me..
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Re: 1949 WL - Oil Pump Check Valve Springs
<<< Ball Valve >>>Pascal wrote: ↑Tue Feb 28, 2023 8:34 pm Sumping has always been a big problem on ball-controlled oilflow bikes like Harleys and many a Brit bike..
Sometimes relapping a ball into the pump housing will solve it, often not permanently..
Oil-seeping can also occur through the pumpgasket.
In an attempt to cure my sumping problems..I installed a checkvalve in the feedline.
But that's me..
It is guaranteed to work....
Most folks won't even know it's not supposed to be there if using a vintage style valve as pictured.
I even used one on my ho-made Evo...
....RooDog....
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Re: 1949 WL - Oil Pump Check Valve Springs
Actually...it is a cone with a hole, not a ballvalve
https://www.ebay.nl/itm/113920989425?mk ... media=COPY
https://www.ebay.nl/itm/113920989425?mk ... media=COPY
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Re: 1949 WL - Oil Pump Check Valve Springs
They changed the pressure settings for 1941; from 18 to 30 lbs.
The longer the spring, the higher its preload (with the screw in the same position).
Hence the revised spring length..I guess
The longer the spring, the higher its preload (with the screw in the same position).
Hence the revised spring length..I guess
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