OVERHAUL
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Figure 3. E511 Impeller and Mechanical Seal Removal
1. Remove the impeller nut and washer from the impeller
shaft. If the impeller does not pull off the impeller shaft
easily, use a gear puller or two pry bars between the im
‐
peller and adapter. Remove the impeller key.
2. Use snap ring pliers to remove the retaining ring. The me
‐
chanical seal can then be removed. Note: Do not reuse
the retaining ring. The stationary ring will remain with the
gear case cover.
3. Drain oil from gear case.
Figure 5. E501 Gear Case Cover and Impeller Shaft Removal
1. Remove the impeller gasket.
2. Remove the 10 hex head screws and lock
washers from the gear case cover.
3. Remove the gear case cover from the gear
case. Press out the impeller shaft and bear
‐
ing assembly from the gear case cover.
4. Remove gear case gasket.
5. Press out the mechanical seal stationary seal
ring, oil seal. Pull wear ring if required.
