Identify the axis that has a clogged grease lines. Refer to the Haas Liquid Grease - Troubleshooting Guide.

Remove the sheet metal panels/waycovers to gain access to the axis lube manifold.

A liquid pump is used to drive oil through the lube lines to clear the obstructions. We recommend using the Haas Pump 30-7510. This is an air driven pump that can build enough pressure to clear the lube lines. An air driven pump from your local hardware store can also be used. Be sure to not exceed 3000 PSI when pressurizing the copper lube lines or you can cause them to fail. Use a pressure gauge to ensure you are at a safe pressure when operating the pump. 

Remove the barb fitting [1] from the manifold. Install the 58-3657 reducer [2] and the 58-1684 JIC fitting [3] onto the manifold. Connect one end of the 59-8621 hydraulic hose to the JIC fitting [3] at the grease manifold. Connect the other end of the 59-8621 hydraulic hose to the JIC fitting [4] at the 30-7510 pump. Make sure that the ball valve [6] is in CLOSED position and connect the air supply [5]. Fill up the 30-7510 pump tank with the Mobil DTE24 oil. Open the ball valve [6] to turn ON the pump. Run the pump untll there is a steady oil flow out of each linear guide truck and the ballscrew ballnut [7]

NOTE: If any point on the system will not unplug, disconnect and plug the outputs of the points that are flowing oil using P/N 58-3015.  Apply pressure only to the points that will not unplug.  Repeat this as necessary.  If a point will not unplug after this sequence, the restrictor will have to be removed from this point to allow it to unplug.  Remove and replace the clogged restrictor.

 IMPORTANT:  Do not connect the hydraulic hose directly to the linear guide truck or ballscrew ballnut. Direct pressure can cause damage.

Once you get the steady flow of oil out of each lubrication point, stop the oil pump, remove the fittings [2] and [3] and reconnect the barb fitting [1] with the lubrication line back to the manifold.

Reinstall previously removed sheet metal panels/waycovers.

Repeat the same process for each axis.

Remove the HLG pump assembly from the CALM cabinet.

Remove the HLG reservoir, clean the grease out and wash it with the degreaser.

Remove the pressure gauge [1].

Remove the 1/4" fittings [2].  NOTE: The amount of fittings will depend on the machine model and configuration.

Remove the pressure sensor [3]

Remove all of the NPT plugs [4] from the manifold.

There are two check valves within the HLG pump manifold. 

The main check valve [5] located on the bottom of the HLG manifold and prevents the pressurized grease to flow from the pressurized lines back into the HLG reservoir. remove the spring and the ball. Inspect the o-ring inside the check valve cavity, replace with 57-22201 if necessary.

The bleed back circuit check valve located on the top of the HLG manifold and shuts off the bled back circuit when the HLG canister is under pressure. Besides the spring and the ball [6] there is a snubber setscrew [7] under the check valve ball. Remove the snubber setscrew when cleaning the manifold passages.

Clean the HLG manifold ports out with degreaser and compressed air.

Reassemble the HLG manifold in the reverse order.  IMPORTANT:  Torque the snubber setscrew [7] to 2 in-lbs (0.226 Nm).

Install the HLG pump into the CALM cabinet and reconnect the grease lines. 

Verify that the pickup tube has an updated 80 mesh filter screen. Replace if nesessary. Refer to the Haas Liquid Grease Filter Kit for more information.

Fill the HLG reservoir with compatible lubricant to 1/2" (13 mm) below the threads on the reservoir. Refer to the Lubricant, Grease, and Sealant Tables for Haas Machine Components.

Prime the lube lines as described in the Minimum Lubrication - Axis - Grease Reservoir - Haas Liquid Grease - Refill instruction.