Page 26/58IOM BiRotor Plus R27
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. Fold down the lock washer tabs to enable the
nuts to be undone and remove them from the
rotor shafts. The timing gears can be released
from the shaft by striking them with a plastic
or rubber mallet.
6. Remove the rotors from the end plate by
gently tapping the rotor shafts with a plastic or
rubber mallet.
7. Remove the O-rings from the rotor shafts.
9.7 - Complete Disassembly of the Measuring
Unit (B35 thru B38)
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
pulse wheel end of the measuring unit.
4. On the pulse wheel end loosen Set Screws
on each bearing nut. (2 screws for each nut).
Remove the bearing nuts.
5. On the timing gear side of the measuring unit
fold down the lock washer tabs to enable the
nuts to be undone and remove them from the
rotor shafts. The timing gears can be release
from the shaft by striking them with a plastic
or rubber mallet.
6. Loosen Set Screws on each bearing nut.
(2 screws for each nut). Remove bearing nuts.
7. (B27 thru B36) Remove the pulse wheel side
bearing plate.
8. 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.
9. (B38 only) Screw 2 of the screws into the
bearing plate. Slowly tighten the screws
sequencing to remove the bearing plate.
Caution: Care must be taken not to damage
the bearing nut threads when removing the
bearing plates and rotors.
10. Remove the rotors from the end plate by
gently tapping the rotor shafts with a plastic or
rubber mallet.
11. (B33 and B34 only) Remove the O-Rings from
the rotor shafts.
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