Pioneer ES Series Operation & Maintenance Manual page 17

is removed from the seal housing. On the P10, the stationary seat is held in a retainer, and the
two are pressed out together.
SHAFT AND BEARING
With the mechanical seal removed, remove the
bearing housing drain plug located on the front
bottom left of the bearing frame (figure 4), and
drain oil. Clean plug and reinstall in housing.
Remove fasteners, and slide the bearing cap/SAE
bracket and grease seal off the shaft. Press the
grease seal from the bearing cap/SAE bracket.
Place a block of wood against the impeller end of
the shaft and gently tap the shaft and bearings out
of the housing.
BEARING REMOVAL
Remove the shaft snap ring. This will require the use of snap ring pliers. It
will be necessary to use a puller or hydraulic press to remove the drive-end bearings and
pump-end bearing from the shaft. If the bearings are to be reused, be certain that puller
jaws bear only against the inside races (shaft-side) of the bearings.
REASSEMBLY OF COMPONENTS
SHAFT AND BEARINGS
Clean the housing and components with appropriate cleaning solvent and use compressed air to
dry components. If bearings need replacement, remove the outboard (drive-end) bearing
retaining ring and use appropriate bearing puller to remove bearings from shaft. Inspect shaft
and replace if distorted, nicked or scratched beyond repair.
If bearings are to be replaced, then the bearings may be heated to 250º F for ease of installation.
An induction heater, electric oven or hot plate may be used to heat the bearings. Never use
direct flame to heat bearings.
After heating the bearings slide the bearings on the appropriate shaft end. When installing the
bearings onto the shaft only press against the inner bearing race. The inboard bearing should be
installed with the shielded side toward the impeller. The outboard bearing should have the
integral retaining ring on the bearing O.D. toward the drive-end of the shaft.
After installation of bearing, ensure that bearings are tight against shaft shoulders.
17