10
B. Journal Tube Replacement (continued)
2. To install the tube assembly - Align the rotor with the tube, insert
the tube into the cover with care not to pinch the O-ring as it slides into
place, and tighten the tube with the wrench.
NOTE: The cover register cavity must be dry at all times.
C. Input Gear and Pinion Replacement
1. To remove the input gear and pinion - First remove the journal
tube assembly as instructed in the preceeding section. With a 1/32”
punch, drive the pinion spiral pin from the shaft assembly and remove
the pinion. With a small screwdriver, loosen the input gear set screws
and remove the input gear from the input gear shaft.
NOTE: For the proper combinations of input gear and pinion, refer to
Gear Selection Tables on pages 7 and 8.
2. To install the input gear and pinion - Reinstallation is accom-
plished by reversing the procedure described in the preceeding para-
graph.
D. Output Shaft Bearing Replacement
1 . To remove shaft assembly - After removing the register, use a
9/16" socket or box end wrench to unscrew the bearing support
assembly (including the shaft), driven magnet and output pinion. To
remove the shaft from the assembly it is necessary to push out the
small pin in the pinion with a 1/32" punch, supporting the shaft so
it will not be bent. After sliding pinion off, remove the shaft from the
bearing support. If required, the magnet can be taken off by using
Truarc Pliers, No. 52A, to take the grip ring off the shaft.
2. To install the shaft assembly - The bearing support and its bearings
are replaced as a unit, the shaft inserted with the magnet at the end
opposite the wrench hexagon, the pinion is placed with its pin hole
aligned with that of the shaft, and the pin installed with care again
not to bend shaft. The assembly, with 0-ring in place, should then be
inserted into the journal tube and tightened.
E. Insert Replacement
1. To remove inserts - Remove the meter cover, slip off the rotor,
unscrew two screws in each insert (note porting orientation), and lift
out. Calcium carbonate deposits will make this difcult if the water is
not treated. Each insert has a thrust washer that can be removed with
light force. These washers can be reversed to present a new surface to
the rotor, or replaced-if worn.
2. To install inserts - Place each insert with its washer in the proper
housing with porting oriented properly. Fasten with the at head
screws below the insert surface. Reassemble the rotor, cover, body
O-ring, and fasten down as before.
F. Register
If register is damaged, replacement of complete register is recommended.
