Brodie BiRotor Plus B27X - Measuring Unit Disassembly While Maintaining Clearance Settings; Complete Disassembly of the Measuring Unit

IOM BiRotor Plus R27Page 25/58
9.5 - Measuring Unit Disassembly While Maintaining Clearance Settings
1. Place a folded rag between the timing gears
to prevent the rotors from turning during
disassembly.
2. Remove the pulse wheel by removing the screw
, washer, and retaining washer.
3. Remove the screw from the end plate at
the timing gear end of the measuring unit
assembly.
NOTE: (B27 thru B34)
A flat head screwdriver may be used in
conjunction with the slots on the end plate to aid
in its removal. Excessive force is not required.
(B35 thru B38) Loosen Set Screws on each
bearing nut (2 screws for each nut). Remove the
bearing nuts.
(B38 only) Remove the 4 outside screws on
bearing plate. Remove the 2 inside screws and
screw them hand tight in the bearing plate holes
on the opposite side of the center rib. Slowly;
in sequence tighten the screws to remove the
bearing plate.
4. Use a plastic or rubber mallet and strike the
rotor shafts at the pulse wheel end of the
housing to aid in the removal of the rotor
assembly.
5. Once the rotor assembly has been removed
from the housing any blockage or foreign
material can be cleaned away.
At this stage the meter can be reassembled by
reversing the disassembly procedures without the
need to reset any clearances.
NOTE:
Any elastomers that have been removed should
be replaced with new parts during reassembly.
Figure 9-3 Measuring Unit Disassembly
9.6 - Complete Disassembly of the Measuring Unit (B27 thru B34)
1. Place a folded rag between the timing gears
to prevent the rotors from turning during
disassembly.
2. Remove the pulse wheel by removing the
screw, washer, and retaining washer.
3. Remove the screws from the end plate at
the timing gear end of the measuring unit
assembly.
NOTE:
A flat head screwdriver may be used in
conjunction with the slots on the end plate to aid
in its removal. Excessive force is not required.