User's Manual

MTU Instruction
for Rockwell/Equimeter Commercial Gas Meters
Tools Required
• Screwdriver, #2 Phillips
• Screwdriver, 3/8” slotted (flat-
blade)
• 7/16” box wrench
• 5/16-18 blind-hole (bottoming) tap
and mating size T-handle
• Canned compressed air
Also see Publication 471-2000, General
Installation and Wiring Guidelines for a
complete list of recommended tools and
supplies for MTU Installation.
Installation Procedure
There are two parts to this procedure.
First, the pulser must be mounted to the
meter. Once this is complete, you can
mount the MTU remotely or directly on
the pulser using the adapter provided. If
you are mounting the MTU on the pulser,
it can be mounted at either the front or
back of the meter.
Step 1 – If necessary, remove tamper
seals that cover the index cover screws.
Loosen and remove the screws securing
the index cover. You may discard these
screws as they will not be re-used.
Remove the index cover and set it aside.
Step 2 – Loosen and remove the screws
securing the index to the index plate. You
may discard these screws as they will not
be re-used. Next, remove the index and
set it aside.
Step 3 – If the index cover screws and
index mounting screws were difficult to
remove, the threads in the index plate
may need to be cleaned out before
installing the pulser assembly. Use the
blind-hole tap to carefully clean the
threads of the four 5/16” holes. Blow out
the holes with compressed (canned) air.
CAUTION!
The index base plate
mounting holes use a 5/16-18
thread. Be sure to use the
proper tap. Using a tap other
than a 5/16-18 tap will result in
damage to the meter head.
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