I have a 1949 H with the lift all belly pump. The pump quit working and started to leak very badly so i took it out and fixed the seals that were bad. I put the pump back in and tried to use it and I get no oil flow from the pump even though when the lever is pulled back the engine pulls down like the pump is pumping out pressure. Is this a relief valve that is sticking open and causing the pump to be in bypass constantly or is the pump just shot? Any help would be appreciated, as the gravel in the yard needs rearranged something fierce, and nothing is happening with a broken belly pump!
- Thread starter DK44H
- Start date
Janicholson
Well-known Member
The pump is working (making pressure), or it would not load the engine. Is there something attached to it that can move? If there is a cylinder attached correctly, the I think the valve may have been put in incorrectly. Good luck, JimN
Thanks for the help I will look into that ASAP! I had a single acting cylinder attached and it would not move either way so I think you are probably right about the valve. I don't think it could be the hose couplers or anything like that as they are all new equipment and worked fine previously.
Another question: I found the cap for the relief valve in the bottom of the resivoir. Does this have a specific purpose other than keeping the bypassed oil from spraying inside the pump? Or could this be some of my problem too?
Another question: I found the cap for the relief valve in the bottom of the resivoir. Does this have a specific purpose other than keeping the bypassed oil from spraying inside the pump? Or could this be some of my problem too?
Owen Aaland
Well-known Member
The cap over the relief valve is used to kick the lever out of the lift position.
When the rod is pulled all the way back it should stay there until the cylinder reaches the end of the stoke. When the oil flow stops, the relief valve opens and the caps pushes against the detent arm allowing the outer arm to move forward and pull rod to drop down to the stop pin.
When the rod is pulled all the way back it should stay there until the cylinder reaches the end of the stoke. When the oil flow stops, the relief valve opens and the caps pushes against the detent arm allowing the outer arm to move forward and pull rod to drop down to the stop pin.
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