I have a Tree Mill with with a Bijur one shot oiler installed. How do
I diagnose the oiler, and, if found defective how do you repair? Do I
have to remove the milling machine table? I do have the factory
manual for the mill but the oiler is not discussed. Somebody probably
added it on.
There's not much to them. First take the line off the oiler and pump
it.. If it pumps oil then you know you have a clog somewhere else. If it
doesn't pump there is probably a o-ring bad somewhere. I guess the
lubricator itself could go bad but I've never had it happen. I've had
the reservoir crack before other parts went bad.
The little flow restrictor fittings at the end points of each lube line
are usually what clogs up. Everything else in the flow path is pretty
wide open so and bits of debris will accumulate at the flow restrictors.
The flow restrictors are important in equalizing the oil flow so that
every part gets oiled, if you run without them you will have some areas
over oiled and some oil starved.
The first thing to do is clean the tank and the screen on the bottom of
the pump. If any water gets into the oil and bacteria are present,
there will be snot that forms and will clog up the filter screen and the
rest of the system.
Each oiling point has a metering unit which is essentially a plunger
that pushes out a measured amount of oil every time pressure is applied
to the system. The metering units come in different metering amounts
depending on how much oil is required.
You cannot blow through the metering units but can check them by hooking
them up directly to the pump and see if a drop of oil comes out when you
pull the pump plunger and release it.
If you find a lot of goop in the tank I would recommend blowing out each
line and then put some kerosene or very light oil in the tank and pump
it through the system without the metering units screwed into the ports
but connected to the lines from the pump. Check to see that each
metering unit is supplying oil. Once all the metering units are pushing
oil, reinstall them and put the recommended oil in the tank. Pump the
unit excessively while operating the machine to flush out any goop in
the ways, the extra oil will not harm anything but it will tend to clean