M & MA Series Meters
40
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Completing the Meter Reassembly
Tightening Front and Rear Covers
For step 2 in the following procedure, Liquid Controls recommends tightening the front and
rear cover screws
in a criss-cross or “star” pattern with a minimum of two passes. First pass should be at half-
torque. Final pass(es) should be at full torque. This method will ensure uniform seal
compression on cover O-ring or gasket. See the Torque Pattern M-7® Front and Rear
Cover section below in this topic.
Refer to the figure below and follow this procedure to complete reassembly of the Meter:
1. Push the O-ring (1) into the groove (2) on the front of the meter housing.
NOTE: M-60® and M-80® models use a flat gasket.
2. Fasten the front cover (3) to the housing with the cover screws (4) using the cover socket
or open end/box end wrench.
3. Screw the front drain plug (6) into the front drain plug hole (7) using the drain plug allen
wrench.
4. Push the O-ring (8) into the groove (9) on the rear of the meter housing.
NOTE: M-60® and M-80® models use a flat gasket.
5. Fasten the rear cover (10) with the cover screws (11) using the cover socket or open
end/box end wrench.
6. Screw the rear drain plug (not shown) into the rear drain plug hole using the drain plug
allen wrench.
7. Screw the counter bracket (12) onto the front cover using the counter bracket screws.
8. Insert the packing gland assembly (13) through the counter bracket and into the cover
plate. Make sure the forks of the packing gland drive are in the slots of the packing gland
driver attached to the blocking rotor gear.
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