Seal Installation Cont'd; Impeller; Suction Cover And Wear Plate; Lubrication - Pioneer PT Series Operation & Maintenance Manual

SEAL INSTALLATION CONT'D

Place the shaft sleeve o-ring over the end of the shaft and up against the shaft shoulder (where
the sleeve abuts). Apply a little grease or oil to the o-ring. Slide the mechanical seal / sleeve
assembly over the shaft with the flanged end of the sleeve toward the end of the shaft. Slide the
assembly as far as the seal spring will allow.

IMPELLER

Apply a small amount of Loctite 262® (red) or equivalent to the shaft threads, and install the
impeller. As with impeller removal, attach a strap wrench or bearing nut spanner to the drive-
end of the pump shaft. Have an assistant hold this wrench to immobilize the shaft. Tighten the
impeller as much as possible by hand by rotating it clockwise.
The shaft and impeller threads must be completely clean before re-installing the impeller. Do
not use anti-seize compounds on the shaft threads! Screw the impeller onto the shaft until
tight.

SUCTION COVER AND WEAR PLATE

The impeller should be adjusted to within .010 to .020 of wear plate. With the pump resting
horizontally on its feet push the pump so that the drive-end of the shaft is against a stop (back
of the workbench). This will ensure that the shaft and impeller are as far toward the wear plate
as possible. Now loosen the inspection cover clamp T-handle. Back each of the inspection
cover adjustment set screws until the wear plate makes contact with the impeller. Now
tighten each adjustment set screw ¼ turn at a time, and slightly tighten the T-handle screw. If
the impeller and wear plate are still rubbing, repeat the procedure until the wear plate no longer
rubs against the impeller.

LUBRICATION

Seal Assembly
Prior to starting the pump, fill the transparent seal oil reservoir. Use an ISO viscosity grade 32
Turbine oil.
Bearings
The bearing housing was lubricated at the factory and the oil level should be maintained at the
middle of the sight gauge. Use an ISO viscosity grade 32 Turbine oil, and fill through the air
vent hole.
CAUTION!!!
Over-filling of oil can result in premature failure of bearings. Under normal use drain and refill
bearing housing at least once every 12 months.
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