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117944 Lamb Motor (S4,S5 - 240 volt)

Product Details

Our brand new (not rebuilt) Lamb 117944 Ametek motor is used in some central vacuum brands and models. 117944 motor is a Lamb Ametek original motor.

  • Fan Stages - 3
  • Bottom Diameter - 5.7"
  • Voltage - 220-240
  • Hertz - 50-60
  • Height - 8"
  • Bolt Height - 3.5"
  • Waterlift - 138.1"
  • CFM - 100.3
  • AirWatts - 444
  • Amps - 6.7
When to replace: The signs that a 117944 Lamb motor needs to be replaced include: mini breaker popping, electrical smell, excessive blue sparks seen from motor top, you only hear a click, motor shuts down on its own but works later, or its life of 900-1,200 hours has been used up. (If you don't hear a click, then your relay most likely needs to be replaced and your motor may be fine). Five percent of the time, the mini breaker will go bad as well as the motor. If this happens, replace the motor and then evaluate the mini breaker.

How to replace: It is not difficult to replace the 117944 Ametek motor. There are three to four screw brackets and a couple of wires. All of our customers are amazed at how easy it is. NOTE: There is no core trade-in. Used motors are thrown away or taken to a metal recycling center. Click here to read and print out our step-by-step motor replacement instructions. Note that if the unit bolts into metal brackets, then the ground wire can be snipped. If plastic, then attach the ground wire to the ground from the power cord or anywhere to metal on the unit.

Replacing motor brushes: The lamb 117944 vacuum motor has carbon motor brushes that can be replaced. This should be done before a motor is "on its last legs." Read more about changing the motor brush on the detailed motor brush how-to page. If you are ready to replace your motor brushes, here is a link to the 117944 motor brush. You will need to buy two.
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Part #199RX
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Additional Items

Motor Brush (motors 11- 7123, 7944) 117123 117944
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5.7  Inch Motor Gasket 5.7 Inch Motor Gasket
In Stock
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Latest Top Reviews

5 Stars

Mar 14 2019 11:56AM
Product came within 1 week and a perfect match Thank You

5 Stars

Oct 8 2018 10:20AM
I had one of two motors quit on me, so I prudently replaced both due to their age (1o yrs Minimum). My Silent Master 5 is like new !!!! Plenty of power, lots of suction. Easy replacement.

4 Stars
Oct 16 2012 8:51AM
I was told by CSR that I needed the 120v replacement. However, I rechecked the original before I ordered and found it to be the 240V. Otherwise the service was excellent. Although only one of original motors burned out, I replaced both, but vacuum suction does not seem as strong as before.

5 Stars

Feb 7 2010 7:44AM
Works great, fits great, very quiet.

5 Stars

Aug 18 2006 4:12AM
All products were fine. It would be beneficial to anyone who orders a motor for the salesperson to mention that ordering a new gasket is usually necessary. I salvaged the old ones for two motors, but using new gaskets would have made life easier.

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