Lamb Carbon Brush Set for P...
$38.99
Product details
This carbon brush set, part 106904, is a two-brush pack sized for the Lamb motor used in ProTeam backpack vacuums, motor number 122157-00. Ametek lists that motor as a 5.7 inch thru-flow design, single stage, 120 volt, drawing 825 watts. Backpack vacuums run their motor almost continuously through a shift, so the brushes inside see far more hours per week than a household upright and wear through faster as a result.
A backpack unit on failing brushes usually loses power gradually rather than all at once: the pull at the hose weakens partway through a shift, the motor note changes to a rough hum, and you may catch a burnt smell when you set the unit down after a long run. Left long enough, the worn brush lets its spring wear through and the motor stops making contact entirely.
Because this set is matched to the 122157-00 motor specifically, open the backpack housing and confirm the motor number stamped on the frame before ordering. Lamb built more than one motor for ProTeam's backpack line over the years, and brush length and holder shape are not always shared between them.
Replace both brushes together rather than one at a time, since a fresh brush paired with a worn one wears unevenly and shortens the life of the new brush along with it. Check the commutator for scoring while the motor is open, since a badly worn brush can mark the surface it rides against.
- Part: 106904, carbon brush set, 2-pack
- Fits: ProTeam backpack vacuums built around Lamb motor 122157-00
- That motor: Lamb 5.7 inch thru-flow, 120 volt, single stage, 825 watt
- Before ordering: Confirm the motor number stamped inside the backpack housing