27
Fitting and shimming of Rotorcase
Whenever the rotor case and rotors have
been removed it is good engineering practice
to check the clearances of the pump to
ensure they are within specification shown in
the clearance charts before putting back in to
operation.
If the existing rotorcase and rotors are being
refitted and no changes have been made to
the rotor abutment setting (gearbox shims)
then no changes to the rotorcase shims
should be required. In this case please
proceed to step 29.
If a new rotorcase and/or new rotors and/or
changes to the rotor abutment setting
(gearbox shims) has been made then
reshimming of the rotorcase will be required.
In this case please proceed to step 28.
Note:
Your supplier can advise the correct
clearances from the pump serial number. Any
incorrect setting of clearances is likely to
damage the pump in operation. Shims can be
stacked unequally providing the clearances
are achieved.
28
1.
Remove the shim retainer screws (14),
shim retainers (13) and shims (14) if fitted.
2.
From the shim set select and measure out
initial shims totalling as below:
• DuraCirc models 32 to 43 :- 0.5mm
• DuraCirc models 52 to 74 :- 0.6mm
3.
Fit the shims, shim retainer and shim
retainer screws and tighten to the correct
setting. Ensure the shim retainer is fitted
the correct way round with the counter
sunk holes visible and check the screws
do not sit proud of the shim retainer.
3206-0064
200002348-1-EN-GB
43
Maintenance 5
EN
Summary of Contents for DuraCirc Range
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