Progressive Lube Distributor Blocks are made up of many segments that send
precisely metered pulses of oil to specific lubrication points. If you are experiencing
lube pulse problems, it is important to make sure the Distributor Block segments
are working properly. You will need two people and the following tools to perform
this procedure:
Tools Needed:
Metric Allen Wrench Set
Adjustable Wrench
Stopwatch
Clean
one gallon container
Graduated container (graduated in ML, with capacity of at least 1000 ML)
Volume
Testing Tool
PROCEDURE:
Push the Machine
Off pushbutton to turn off the lubrication pump.
Remove the cap on the Distribution Block segment you are testing
Each
segment has two caps. Either one can be used for testing.
Screw the pressure
gauge into the first segment to be tested.
You only
need to test those segments with lube lines attached to them.
Turn the lubrication pump back on and check the pressure
reading. Write down the reading for reference later.
Go to another press that is operating properly and check the pressure at the same segment you
are testing. The pressure readings should be about the same (+ or - 5 bar).
If the pressure reading on the press you are checking is lower than the operating
press, the problem is most likely with the Distribution Block and it should
be replaced.
If the pressure
reading on the press you are checking is much higher than the operating press,
the problem is most likely internal mechanical damage to the bearing or bushing.
The damaged component has blocked the lubrication port, leaving the oil no
place to flow and thereby creating the high pressure reading.
If the pressures are the same, return to the press and test the next
segment. Continue until all segments are tested.
This
task can be done quickly by using multiple pressure gauges. If you have enough
pressure gauges, all segments can be tested at the same time.
If the pressures are OK, begin checking volume outputs by first turning
off the lubrication pump and removing the lube
line from the first segment to be tested.
Then, place the adjustment valve end of the Volume Testing Tool into the
clean bucket, have the helper start the lubrication pump by pushing the Machine
On pushbutton and fully open the adjustment valve.
Allow the oil to flow into the bucket for a minute. This insures the lubrication system is at normal operating pressure
when the measurement is taken.
Slowly close the adjustment
valve until the pressure gauge reading is the same as the pressure reading
recorded earlier for that segment.
Quickly transfer the adjustment valve into the graduated
container and have the second person begin timing.
At the end of 60
seconds, transfer the adjustment valve back into the bucket.
Have the helper push the Machine
Off pushbutton to shut off the lubrication pump.
Check the volume of oil in the graduated container.
If the values are not the same, you must replace either the segment or the entire distribution
block.
If you
choose to replace the segment only, remember that because of the way the lube
flows inside a Progressive Distributor Block, you must replace the segment
ABOVE the one you are testing. If you are testing the very top segment, replace
the bottom one.
When replacing
segments, make sure the replacement segment is the same type as the original.
Different segments put out different oil volumes. Segments are identified
by "M" numbers (M1, M2, M2.5, M3, etc.). The "M" number
is stamped on each segment.
If the volume matches that listed on the Lubrication Plan, repeat the procedure for the rest of the segments.