Hydraulic pump whining

theking5983 · Aug 13, 2023

new pump is in fluid level is full but there is some whining coming from the pump is that normal? I also notice when I dead end the bucket hydraulic it makes the loader move up and down about a inch?

super99 · Aug 20, 2023

More information would be helpful. What tractor do you have? What all did you do/replace? When is the pump whining, all of the time or just when you deadhead the cylinder? Is it full of oil? Help us help you. Chris

theking5983 · Aug 21, 2023

(quoted from post at 02:18:37 08/21/23) More information would be helpful. What tractor do you have? What all did you do/replace? When is the pump whining, all of the time or just when you deadhead the cylinder? Is it full of oil? Help us help you. Chris

can hear the pump at all times idle or when I am using the loader I am not sure if it is a whining now or if it is just the noise the pump makes I replace the pump with the pump for the 1650 so I changed the gear that drives the pump to fit the new pump I replaced the bearings and races, used Loctite race compound so they did not spin, all new gaskets, I guess I should ask if u should hear the pump at all because everything works fines the original pump was shot when we got the tractor so I have nothing to compare it to

super99 · Aug 21, 2023

So you have a 1650? Did you use new gaskets on both sides of the hydraulic unit or make you own with silicon? The gasket thickness spaces the gears correctly. If you used blue goo, the gears are too close together and will make it whine and wear gears out quickly.

theking5983 · Aug 21, 2023

(quoted from post at 00:58:38 08/22/23) So you have a 1650? Did you use new gaskets on both sides of the hydraulic unit or make you own with silicon? The gasket thickness spaces the gears correctly. If you used blue goo, the gears are too close together and will make it whine and wear gears out quickly.

I did two new gaskets and no I have a 1550 I used the pinion gear from a 1650 so I could use a 1650-1950 hydraulic pump because finding a 1550 9 tooth pump was one hard to find and the few I found were expensive and the newer style pump has a few more gallon per min flow from what I was told that was the best way to do it, I used all new part and correct parts my son is a certified auto mechanic we checked and triple checked everything before we put everything back together, so I ran it today there is a rrrrrrrer noise when u boom up every when it is empty no noise when the bucket is moved up or down it has lots of power the case around the pump stays very cool to wondering if I turn the detent valve in some more is that the correct name for it?

Hydraulic pump whining

theking5983

Member

super99

Well-known Member

theking5983

Member

super99

Well-known Member

theking5983

Member

Similar threads