Liquid Controls Flow Meter MA-15

Remove flange gaskets when removing the flange assembly

Carefully scrape off the flange gaskets

Ensure the flange surface has been scraped clean

Confirm that no old flange gaskets are reused

Has the internal pressure been relieved to zero?

Remove the two screws on the packing gland retaining plate with a 5/16" socket and ratchet drive extension or 5/16" nut driver.

Pry off the retaining ring with a standard screwdriver.

Pull the driver out from the assembly.

Select the mounting holes for the retaining plate based on the presence of a counter adapter dust cover.

Acknowledge understanding of the warning regarding relieving internal pressure

Relieving Internal Pressure Procedure for LPG and NH₃ Meters

Close the belly valve of the supply tank

Close the valve on the vapor return line

Close the manual valve in the supply line on the inlet side of the meter

Is there a manual valve on the inlet side of the meter?

Consult the truck manufacturer for procedures to depressurize the system if no manual valve exists

Slowly open the valve/nozzle at the end of the supply line

Look for gaps when disassembling the meter

Check for gaps between the bearing plate and housing using a feeler gauge

Check the bearing plates for flatness with a straight edge

Are there any shock problems causing the gaps?

Have shock problems been resolved?

Contact full-service distributor for assistance if shock problems exist

Check housing and cover for flatness if bolts are bent

Use a straight edge to determine flatness