User's Manual

MTU Instruction
for Sprague/Schlumberger/Actaris Gas Meters
Step 1 – Remove the clear index cover
from the meter by removing the screws
that hold it. The clear index cover and
index cover screws will be reused. Clean
and inspect these items and set them
aside until needed. Replace if damaged.
Step 2 – Remove the index by removing
the two screws that hold it to the meter.
Set the Index aside until later. The
screws that held the index to the meter
can be discarded.
Step 3 – Remove the drive foot from the
meter drive shaft by unthreading it
counterclockwise. The drive foot will not
be reused and can be discarded. Then,
thread the magnet wheel clockwise onto
the shaft. Tighten the magnet wheel until
snug to the end of the threads on the
drive shaft.
CAUTION!
Be careful not to cross-thread
the magnet wheel when
installing it on the meter drive
shaft. Cross-threading can
cause misalignment of the
magnet wheel which in turn
can cause binding or erratic
performance.
Step 4 – Thread the two #10-24 x 3/8”
machine screws provided about one full
turn into the index mounting holes.
Step 5 – Place the MTU bracket
assembly into position on the meter,
hooking the two tabs on the bracket
behind the heads of the index mounting
screws.
Step 6 – Replace the index by hooking
the two tabs on the index behind the
heads of the index mounting screws.
Insure that the drive foot on the index will
be driven by the pin on the magnet wheel
as it rotates. Several styles of indexes
and index drive mechanisms may be
encountered. Use the photos below as a
guide. Note that on indexes with a slotted
drive foot, it is intended that the pin on the
magnet wheel engages the slot on the
drive foot.
Brass Index with Slotted Drive Foot
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