Problem- OVERFLOW HAAS VF3

[daytona81]

we have a haas vf3 and having trouble with the diaphram in the back gettin clogged. this makes the back of the maching under the table fill up with coolant and over flow out the back instead of returning to the proper place. does anyone have any ideas of why this could be happening. we have replace the Y-Axis blade and that may have helped but not sure yet. any ideas for a sure fix would be great.

also if anyone ever replaces the Y-AXIS blade it can be a pain. HAAS decided to be genius and use tapered screws so when the coolant gets to the threads it becomes like a glue. after breaking and easy out and banging an impact drive for a couple hours we had to bust out a wire welder and weld a nut to the head of the screw. after all that it was a piece of cake. i would recommend anti-seize if you get the screws out.

[HuFlungDung]

You could check the quality of the caulk job where the rear Y cover is bolted to the back of the saddle. It is possible for coolant to simply run down the back of the table and wick right into the crack, then it will drip underneath where you see it. You could troubleshoot this condition by shining a light under there while the machine is running and see if and where any dripping is occurring. There shouldn't be any drips.

[daytona81]

well i know fluid goes under the machine where the motor is for the table. but the problem is when the fluid goes back to the diaphram that should seperate the oil and coolant.

[HuFlungDung]

My machine is a 96, maybe its different.

There should not be any coolant in the Y axis trough in the casting. There are smaller side channels along each side that catch the drips from the vertical side scraper of the back Y axis cover.

I have a drip can at the back of the machine, but it collects mostly oil, and even that is just a coffee can full over several months.

Are we talking about the same thing?

[JoBwan]

Originally Posted by daytona81 well i know fluid goes under the machine where the motor is for the table. but the problem is when the fluid goes back to the diaphram that should seperate the oil and coolant.

daytona,
Haas makes a gasket for the seperator for under $6.00. The problem is that as your coolant sets in the seperator it will gum up the port holes. The only way to get it cleaned is to remove the seperator and take it apart, clean it good and put it back together with a new gasket. I have this happen every once in awhile. I now stock the gaskets as we are only running 5 days a week, with 15 different machines. Make sure to clean/blow out the tube that returns the excess coolant to the coolant tank. This may also be plugged with gummed up coolant. Hope this helps. Good luck!