Pulsafeeder Pulsar Shadow - Manual (Page 30)

7.5 Removal and Replacement
To replace the pump shaft seal:
Following the instructions in the previous sections, remove the reagent head assembly. Then
remove the diaphragm. Remove the pump shaft by unscrewing counter-clockwise. Take care not
to allow any shims to drop into the eccentric box when removing the shaft. A thread-locking
compound is used between the pump shaft and the crosshead assembly. Remove the three (3)
socket head screws and seal retainer plate. The seal can now be removed. DO NOT reuse a
damaged pump shaft or polish an old one too smooth. A shaft that is too smooth will weep oil
over time when running.
Reinstall by reversing the disassembly procedure. Lubricate the ID of the seal liberally with
silicone grease (ex. Parker ‘Super O-Lube’). Refill the eccentric box with Pulsalube Oil 9M per
the Lubrication Section.
Figure 19
To replace the motor adapter seal:
First remove the motor per Motor Removal and Reinstallation. Loosen the coupling setscrew
through the access hole in the motor adapter and remove the worm coupling half. Remove the
four motor adapter bolts and withdraw the motor adapter from the gearbox. Take care not to lose
the shims from between motor adapter and gearbox. Remove the oil seal from the motor adapter.
Lubricate the replacement seal with Pulsalube 8G gear oil and install by pressing into position.
Reassemble by reversing the above disassembly procedure.
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