Loader fluid capacity

Scott,

I have a WM4 Wagner Loader on my 41 9N. I haven't changed all the fluid yet, but I believe the capacity is 5.0 gallons. I keep mine filled up to about half way up the tubes coming up to the top. The fill tube is about 2/3 the way up the tube. I understand some types of loaders have a stand pipe on the opposite tube, a little lower than the fill tube, and that is a correct level. My Wagner doesn't have that. There are small little pi$$ holes at the very tops of the tubes, so obviously you don't want to fill that high. As far as draining, I have no problem because of two leaks at the bottom where it mounts to the fender mounts. Seriously, the lowest place to drain the system seems to be at the front hydraulic pump. Mine has a steel fitting there that has a drain plug. You should be able to tell when you are running the fluid too low. The loader will lift slowly. When you add fluid, the performance will be better. After adding up to a certain amount of fluid, it won't lift any different. My loader doesn't lose performance until the level of fluid is only about six inches above the pump. I measure the level of my fluid by sticking a stiff piece of wire down the fill tube, and measuring it like an oil dipstick.

Good Luck

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Mine may look different from yours because I've added some steel to the arms to beef it up some.