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5.0 TONKAFLO PUMP FIELD MAINTENANCE
5.1 Mot
or Bearing Lubrication
Motors up to 3 Hp typically have sealed bearings. Motors of 5, 7.5, and 10 Hp may or
may not have sealed bearings. For these larger motors, lubrication intervals vary
between manufacturers but generally lubrication every 2000 hours is required.
Consult Your Local Motor Distributor For Lubrication Advice, or the motor information
supplied with your pump.
5.2 Mot
or Removal: XB and XC Motor Adapter Pumps
STEPS
1. Disconnect the motor electrical power.
2. Remove the wiring to the motor.
3. Remove the piping from the pump.
4. Remove the pump mounting bolts, and place the pump on a work bench.
5. Remove the cone-point set screw from the shaft coupler, which is located
through either side port in the motor adapter adjacent to the inlet housing. Do
not remove the two knurled cup-point set screws securing the shaft coupler
to the motor shaft at this time.
6. Remove the four (4) 5/16-18NC bolts that hold the pump liquid end to the
motor adapter.
7. Slide the liquid end assembly away from the motor adapter 1/4- to 1/2-inch
(6 - 13 mm).
8. Use two (2) flat-blade screwdrivers or small pry bars to remove the seal hold-
er from the motor adapter along with the pump shaft (Figure 4.5, Removal of
Pump Liquid-End from Motor Adapter). Remove the liquid-end assembly
including the pump shaft as a unit.
9. Remove the four (4) 1/2-12NC bolts that hold the motor adapter to the motor
and remove the motor adapter.
10. Loosen the two set screws that hold the shaft coupler to the motor shaft, and
remove the shaft coupler. The motor may now be serviced by a qualified ven-
dor or replaced (Figure 4.6, Removal of Mechanical Seal Holder from Motor
Adapter).
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