So I’ve got an Udor 5 GPM Gear Drive that just made it to 50 hours, I went to change the pump oil the other day and the existing oil was very milky. When I went to add new oil, it bubbled profusely, not sure if that is normal or not so maybe that’s a detail that will help with my prognosis. When I used it last it ran completely normal, no pressure was lost. I also just ran a 5 minute trial after I added the new oil to see how it would perform, still ran perfectly fine. From reading past forums that dealt with a similar issue, I understand that the milky oil is caused by water getting into the crankcase, whether by a leaky oil cap or bad seals. If the issue was caused by bad seals, would the pump still perform normally?
Other note, I don’t run a buffer tank so it is possible I guess that the pump was starved and the heat buildup caused the seals to crack.
Regardless, I plan to install a buffer tank soon to prevent starvation and bought a replacement seal kit in case that’s the issue.
So in a nutshell, what I’m asking for is some expertise as to all of the potential reasons this could’ve happened, if there are any besides what I listed. Also, is it possible for the pump to still run normally if bad seals were the problem?
Your probably good to go. The 50 hour oil change isn’t really indicative of anything. There could be condensation in the pump while being shipped, trash, boogers etc. Udors are not the gold standard they were 2 years ago but running them hot for a bit or with no water shouldn’t hurt them. They are still a ton better than generals or cats. Check your new oil after a dozen hours or so and see if it has cleared up. I have oil that is pink, milky clear or dark. All of the pumps have thousands of hours without changing the pump oil and I have no problems with them.
I do my best to keep it constantly flowing, only time it doesn’t is when I have my injector hose in the bleach tank and I’m in the process of switching the hose over to my water bucket. If I’m on the backside of a house I’ll jog to the trailer and back lol. So to answer your question, sometimes it’s 45 seconds. Setting up a buffer tank will definitely give me a peace of mind and prevent me from hauling boogy around the yard looking like a fool @dcbrock
If it looked milky, you’re probably good to go. If it tasted milky, you may want to look deeper into the issue. I’ve been running the wheels off of a General Pump direct drive for well over a year & I run as long as 2 minutes off the trigger fairly often. I try to keep it under a minute if I can. I don’t worry because I have a spare pump in the tool box ready to rock & roll. I also never look at my pump oil. If it works, send it!
