What's new
What's new

FP4NC/A central lube issue

Martin P

Stainless
Joined
Aug 12, 2004
Location
Germany in the middle towards the left
I am working on an FP4AT that sat for about 10 years.
I noticed that apparently ALL lube valves were stuck shut and so I had to remove, clean, reassemble them all.
On the z / x axis I made a mistake and removed a row of valves and now no longer know which lines they were connected to. Very easy to mix up now.
There seems to be no picture of this in the parts catalog.
Anybody have a clue?
See also the upper left valve. I do not know were this sits!

See this picture:
1666286735589.png
 

DeadMahoDude

Aluminum
Joined
Oct 30, 2016
Location
Switzerland
Not valves, but oil pressure delivery/metering units.

Basically small cylinders with piston and spring, that gets filled/compressed with oil from central way oil (Vogel) pump.

If that Vogel way oil pump runs, it pumps oil into cylinder, compressing piston with spring behind it.

Small cylinder with spring then keeps oil pressure and delivers way oil until spring is fully out.

AFAIK, there are minor differences, on how much oil these things keep inside, so they have different numbers (1x 24400059 and 6x 24400060)
Apart from that, it shouldn't really matter, which line goes where. IMO much more important, that all delivery units are free and oil gets delivered everywhere.
 

Martin P

Stainless
Joined
Aug 12, 2004
Location
Germany in the middle towards the left
I know.
Please excuse my simplification of terminology for your reading ease.
Point is, it is important how much oil goes where.
I now have a bunch of lines and do not know which valves (3 different volume flows) they go to.
And the plan does not show.
 

AlfaGTA

Diamond
Joined
Dec 13, 2002
Location
Benicia California USA
AFAIK, there are minor differences, on how much oil these things keep inside, so they have different numbers (1x 24400059 and 6x 24400060)
Apart from that, it shouldn't really matter, which line goes where. IMO much more important, that all delivery units are free and oil gets delivered everywhere.

Sorry man, not buying...
Close might be good enough for navel gunfire, not for the lubrication of a precision CNC machine tool.
Checks are sized at different delivery points for a good reason.
Checks might have similar capacities, but they deliver the lube at different rates.
Some points need heavier lube at the outset, some fair better with longer slower delivery...that's the point.
Too much oil and slides can "float" and dimensional stability can suffer...important on a CNC machine....
Deckel worried enough about this in that they hold lube cycles until the machine is idle or executing a rapid feed move.....They get it!

Too little lube and excess wear will result

Cheers Ross
 
Last edited:

AlfaGTA

Diamond
Joined
Dec 13, 2002
Location
Benicia California USA
Martin:
Have an FP3NC "Flip" here at home that i can have a look at...likely similar machine.
Will be back at work on Sunday if you can wait and will look at my FP4NC to see if i can identify the checks and their relative positions.
Have been in here some time back , but i did each one at a time in order not to mix up anything.

Can you give a bit more info:
Are the checks installed in their original position and you have lost track of which lube lines to connect ot which , or are you unclear as to which check goes in each position on the manifold?
Cheers Ross
 
Last edited:

Martin P

Stainless
Joined
Aug 12, 2004
Location
Germany in the middle towards the left
Ross, please no trouble on your side.
I can look it up on one of my own machines, it's just inconvenient.
I hoped someone might have a lube diagram.
The check valves are all in place, I just lost track of which line goes to which valve.

Note to all: Check you lube system. Ob this machine ALL check valves were sticking.
 

AlfaGTA

Diamond
Joined
Dec 13, 2002
Location
Benicia California USA
Martin:
Drawing you posted appears to have the lengths and position of the lube lines if i am not mistaken.
Would it be possible to disconnect each line at the check and "snake" a fine wire up inside the tube to gauge its length.
Thinking something like fine stainless safety wire......
There look to be only 3 different sized checks...So you only need to verify the two lines that go from (1) the second check from the right on the drawing at 420 mm long and (2) the number 7 check from the right at 270mm length. The other 5 have the same sized check so any of the remaining lines are OK....
Cheers Ross
 

Martin P

Stainless
Joined
Aug 12, 2004
Location
Germany in the middle towards the left
I have not been at the machine yet, but yes this is a good elimination approach.
I have to take a picture of this assembly. Very inaccessible.

For the lines on the side of the machine everything is so nicely shown in the parts manual, but for the knee there is absolutely nothing.
I will report.
 

Deckel Fan

Aluminum
Joined
Jun 14, 2006
Location
Baden-Germany
They are all marked with a number 3 so they are identical.
It simply doesn’t matter where you screw them in.
By the way the number 3 means a distribution of 0,03 cm³ per stroke.
Kind regards Stephan
 
Joined
Jan 15, 2005
Location
The Netherlands
I have different problems with a Vogel central lubing system on my recently aquire FP4MK
The motor keeps running The pressure switch is working and the pushbutton for a manual cycle also
Both red and green indicatorlight are on
The control unit in it is a Vogel IG38
Perhaps that is the problem
anyone can confirm this or can there be another reasson
Peter
 

Deckel Fan

Aluminum
Joined
Jun 14, 2006
Location
Baden-Germany
The IG 38 is complex relay. It does not only count that pressure is high at some point of the cycle it also counts when the pressure gets high...

It might be that the relay is bad and that timing is no longer correct.
So I would ty to change it out.
 








 
Top