Liquid Controls Flow Meter M-60

Acknowledge understanding of the warning

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

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

Ensure all internal pressure is relieved to zero before disassembly

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 option for the retaining plate based on the presence of a counter adapter dust cover

Identify the condition of the O-rings

Do the O-rings need replacement?

Is there a shock problem indicated by nibbled O-rings?

Replace damaged O-rings if necessary

Contact full-service distributor for assistance if shock problem is indicated