Zoeller M53 Sump Pump Parts

ZOELLER M53 SUMP PUMP PARTS

If you own a Zoeller Sump Pump, you know how beautiful it looks and how heavy and well-built it is. This Mighty-Mate looks like it will last forever, right? However, there is one part that needs replacement depending on how much the pump runs. Zoeller Pump Company recommends the float switch be replaced every 3 - 5 years

Buying and replacing the float switch is easy. The replacement parts are available on Amazon and we have included a video to show you how it is done. You do not have to be a plumber to do switch replacement.

Here Are The 4 Options

1. 1. Buy only the switch
2. 2. Buy the switch and gasket using two different part numbers
3. 3. Buy the switch and gasket using one part number
4. 4. Buy a case/cap unit which includes the switch and gasket plus the case/cap.

1. 1. Purchase only the switch, PART NUMBER 004705
   • ADVANTAGES
     • This cost is ½ the price of buying the entire unit including case/cap, switch and gasket. The case is cast iron and will not go bad very easily so does not require replacement generally. Why buy more than what is needed?
   • DISADVANTAGES
     • The 004705 only includes the switch not the gasket. However, Zoeller Pump Company recommends replacing the gasket when the switch is replaced. Why remove the pump from the pit twice and open the case/cap twice? Replace both at the same time.
     • Part Number 004705 which only includes the switch costs more than Part Number 04892 which includes both the switch and gasket.
   • CONCLUSION
     • Buying Part Number 004705 for $36.31 at the time of this writing does not make sense when Part number 04892 costs $28.30 at the time of this writing and also includes a gasket with the switch.
2. 2. Purchase The Switch, PART NUMBER 004705, and the Gasket PART NUMBER 034046 separately.
   • ADVANTAGES
     • No advantages exist unless you chose not to heed the advice of Zoeller Pump Company and replace both parts at the same time.
   • DISADVANTAGES
     • Buying the two parts separately costs more than buying the two parts as a unit. Part Number 004705 costs $36.31 (the switch) and Part Number 034036 costs $6.95 (the gasket) giving a total of $43.26. Whereas Part Number 04892 (switch and gasket) cost $28.50 at the time of this writing.
   • CONCLUSION
     • Buying Part-Number 04892 which has both the gasket and switch makes more sense.
3. 3. Purchase PART NUMBER 04892 which includes the switch and gasket.
   • ADVANTAGES
     • Zoeller Pump Company recommends replacing the gasket when the switch is replaced because the gasket must be removed to replace the switch and it can get misshaped. A new gasket will guarantee a tight sealed fit.
     • This option is cost effective.
   • DISADVANTAGES
     • No disadvantages exist.
   • CONCLUSION
     • Buying 04892 provides the necessary parts for a Zoeller recommended switch replacement.
4. 4. Purchase PART NUMBER 04702 which includes case/cap housing with the switch, gasket and seal arm assembly for the float.
   • ADVANTAGES
     • The old switch does not have to be removed from the old case/cap assembly; the Part-Number 04702 includes a new one.
     • A new seal arm assembly for the float is included. This part does not wear out as easily; however replacing it can be smart since the pump has been pulled from the pit and the cap is off.
   • DISADVANTAGES
     • Part-Number 04702 costs $36.49 more than Part-Number 04892 at the time of this writing
     • Extra parts included with 04702 may not be needed.
   • CONCLUSION
     • Buying 04702 makes sense if you are unsure if you can do the replacement yourself.
6. 5. Purchase an Electronic Pump Switch (HC6000) in place of the Zoeller switch.
   • ADVANTAGES
     • This options works very nice because the HC6000 and HC8000 have no moving parts and are attached to the discharge piping system so you will never have to remove the M53 from the sump basin to replace a switch.
     • The HC6000 and HC8000 are easy to install. Just tie the Zoeller float switch to the 'ON' position. Then install the HC switches to the discharge pipe; plug the HC switch into the wall socket; then plug the Zoeller motor cord into the HC piggyback switch. Learn more about the HC6000 and HC8000 Elecctronic Sump Pump Switches.
   • DISADVANTAGES
     • This switch is a new concept, but we installed it in 2011 and highly recommend it.
     • Extra parts included with 04702 may not be needed.
   • CONCLUSION
     • Buying HC6000 or HC8000 makes sense if you are tired of removing the M53 from the basin when the switch needs to be replaced.

Our recommendation is based on your skill or confidence level and time availability.

• If you are mechanical and like tinkering, we suggest you purchase Part-Number 04892 which includes a new replacement switch and gasket.
• If you have a low confidence level, we recommend you spend the extra money and buy Part-Number 04702 which includes the cast iron case/cap, the switch already installed within the case/cap, the gasket and seal arm assembly.

Zoeller Pump Company recommends replacing the gasket when the switch replacement occurs because the case cap unit which contains the switch must be opened and removed. Removing the cap unit means the gasket is also removed. After time the gasket can compress or get misaligned. A failed gasket allows water or moisture to enter the cap where the switch is located and cause the switch which involves electricity to fail.

Since the cap is removed when switch replacement occurs, it makes good maintenance sense to replace the gasket as well.

Watching someone perform a switch replacement is an easy way to gain confidence and know how so that you will be able to replace your own switch.

Learn how to replace the M53 switch.

• Assembly Arm and Seal
  • Replacement Assembly 50 Arm and Seal Part-Number 004704 includes the Assembly 50 arm and seal for the top of the float connector.
• Float
  • Replacement float Part-Number 34019 includes only the float. It is highly unlikely the float will need replacement. Even if the float is punctured it will not fail because it is solid polypropylene.
• Guide Assembly
  • Replacement Guide Part-number 034086 for bottom of float.

• Cord Seal
  • The Replacement Cord Seal Part-Number 004322 includes the Cord Seal and Strain Relief Clamp Rollers
• Shaft Seal Assembly
  • Replacement Part-Number 267027 is for the shaft seal.
• Impeller
  • Replacement Impeller Part-Number 003644. The plastic impeller may break over time with heavy pumping.

Zoeller motors and housing are built to last a long time. Discarding the well-built housing with motor is not environmentally friendly. Besides parts are easy to install and cost far less than buying a new M53.