Minimum-Quantity Lubrication - Filter - Maintenance

Applies to machines built from: 
December, 2014

VMC - Minimum-Quantity Lubrication - Filter - Maintenance

The Minimum-Quantity Lubrication (MQL) system supplies oil to the tool. The MQL system has an oil reservoir [2]. The oil reservoir has a filter [1]. This procedure shows you how to clean the filter. A clean filter keeps the correct oil pressure and oil flow. A dirty filter causes incorrect operation.


Do this procedure if you have these conditions:
  1. The pressure to the MQL system is correct.
  2. The oil flow to the spray head is low.
If the pressure to the MQL system is low, do the VMC - Minimum-Quantity Lubrication - System Purge procedure.

Step 1

Remove these parts:
  • The reservoir bowl [1] from the oil-reservoir assembly for the MQL.
  • The oil hose [2].
  • The fitting [3] for the oil hose.

Step 2

Blow all of the debris out of the filter. Use compressed air.

note: Hold a towel under the reservoir. Catch the debris.

Step 3

Install these parts:
  • The fitting [1] for the oil hose.
  • The oil hose [2].
  • The reservoir bowl [3] for the MQL assembly.

Make sure no air bubbles are in the oil hose: Do the VMC - Minimum-Quantity Lubrication - System Purge procedure.

Be aware: Many service and repair procedures should be done only by authorized personnel. The service technicians at your Haas Factory Outlet (HFO) have the training, experience, and are certified to do these tasks safely and correctly. You should not do machine repair or service procedures unless you are qualified and knowledgeable about the processes.

Danger: Some service procedures can be dangerous or life-threatening. DO NOT attempt a procedure that you do not completely understand. Contact your Haas Factory Outlet (HFO) and schedule a service technician visit if you have any doubts about doing a procedure.