Hydraulic pump leak detection.
Hydraulic pump leak detection.
(OP)
Just wondering if anyone has any experience with this? The company I am working for currently dunk test their pumps in water to check for leaks. I think dunk testing is a good, quick test, but it absolutely terrible for our application, as water and hydraulic systems don't get along. Some current methods of leak detection I am looking into are:
Pressure Decay testing, which is very good, but very expensive. And ultrasonic leak detection, which is fairly cheap, but I keep reading mixed reviews.
Does anyone have any experience with these two methods? Any insight is greatly appreciated.
Pressure Decay testing, which is very good, but very expensive. And ultrasonic leak detection, which is fairly cheap, but I keep reading mixed reviews.
Does anyone have any experience with these two methods? Any insight is greatly appreciated.





RE: Hydraulic pump leak detection.
Why do you think water and hydraulic systems do not get along?
Ted
RE: Hydraulic pump leak detection.
One could:
- add corrosion inhibitor to the dunk tank water.
- Add a step to air blast water off the pump before disconnecting the pressurization fittings.
- immediately place the tested parts into a warm oven/air blast dryer, or heated vacuum chamber, to speed drying.
Doing all 3 would probably reduce corrosion concerns to zero.
RE: Hydraulic pump leak detection.
or use a helium leak tester...
RE: Hydraulic pump leak detection.
We build the pump then attach fittings and plugs to make it air tight. Then we connect air at ~ 15 psi and dunk it in a tank of water with a rust inhibitor. Once that is completed, the excess liquid is blown off the pump and then the pump is tested and set at the customers specifications.
Our main concern is somehow introducing water inside of the pump, which will cause a lack of lubrication between mating surfaces and eventually the pump will score.
So I am just wondering if anyone has experience with leak testing and have offer any good insight.
RE: Hydraulic pump leak detection.
Check for leaks with the same setup used for testing and setting the pump. Skip the water dunk test if it is too much of a concern.
Ted
RE: Hydraulic pump leak detection.
kcj