4.2Mechanical Seal Leakage
WARNING: POWER MUST BE DISCONNECTED BEFORE MAINTENANCE!
If liquid is leaking from the hole on the bottom or on either side of the motor adapter, the mechanical seal may need to be replaced. With new pumps, pumps with new mechanical seals, or pumps which have been dormant for long periods, the seal faces may not be completely seated and a slight leakage will occur. If this leakage contin- ues for more than 60 seconds, the first remedy is to remove the discharge piping and tap the pump shaft using a wooden dowel to seat the seal.
WARNING: BE CAREFUL NOT TO DAMAGE THE SHAFT.
If this does not stop the leak, then the liquid end assembly needs to be partially removed to gain access to the mechanical seal as shown in Figure 4.5 (Removal of Pump
The ceramic seal seat also needs to be wiped clean and then coated very lightly with oil or Vaseline. Also, the carbon wear ring needs to be wiped clean and coated light- ly with petroleum grease. Then, reassemble the pump.
4.3Mechanical Seal Replacement: SS500, SS1000 and SS1800 Series Pumps
NOTE: On Tonkaflo X frame pumps, the mechanical seal must be replaced by removal of the complete liquid end assembly from the pump shaft. On Tonkaflo XB and XC frame pumps, you can service the mechanical seal by either removing the complete liquid end assembly from the pump shaft, or by loosening the
STEPS
1.Remove the four (4)
WARNING: EXTREME CARE MUST BE TAKEN NOT TO BEND PUMP SHAFT!
2.Remove the stainless steel retaining ring (size
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