Pioneer PB Series Operation & Maintenance Manual page 18

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.
Secure the outboard bearing on the shaft with the bearing retaining ring. Slide the shaft and
assembled bearings into the bearing housing until the retaining ring contacts the bearing
housing.
SEAL INSTALLATION (P3B to P8B)
A new seal assembly should be installed anytime the old
seal is removed. The wear pattern on the old seal can cause
premature failure if reused. Refer to figures 1 and 2.
Thoroughly clean the shaft where the mechanical seal will
be installed, and the seat of the seal housing. Place the
sleeve o-ring over the shaft, past the threads and up against
the shaft shoulder. Lubricate the stationary seat bore and
stationary seat o-ring with P-80, 30 wt. motor oil, or liquid
dish detergent and a little water. DO NOT USE GREASE
OR SILICONE LUBRICANTS.
Carefully slide the cartridge seal assembly over the shaft,
with the stationary seat towards the bore. By hand only,
carefully press on the flanged end of the cartridge seal
sleeve until the stationary seat bottoms in the stationary seat bore. Install impeller according to
instructions.
SEAL INSTALLATION (P10B) See figure 3
Thoroughly clean the shaft where the mechanical seal will be installed. Place the sleeve o-ring
over the shaft, past the threads and up against the shaft shoulder. Lubricate the stationary seat
bore and stationary seat retainer o-ring with 30 wt. motor or liquid dish detergent and a little
water. DO NOT USE GREASE OR SILICONE LUBRICANTS. Press the stationary seat
retainer / stationary seat assembly into the seat bore (by hand only). Lubricate the shaft
surface and the inside diameter of the seal bellows. With the polished seal face of the rotating
element toward the stationary seat, push the rotating element onto the sleeve and up against the
stationary seat. Install the spring retainer onto the back of the rotating element (see fig. 3).
Install the spring against the spring retainer. Install the impeller and check impeller to sealplate
clearance. Follow procedure as outlined in Seal Installation (P3B to P8B
18