Need new carbon brushes - Saws

Installing a carbon bush on a Stannah 420 stair lift requires some technical knowledge and experience, as it involves working with electrical components. If you are not familiar with stair lift maintenance and repair, it's best to contact a professional technician or Stannah service representative to ensure the proper installation and safety of the carbon bush.
However, if you have the necessary skills and knowledge, follow these general steps to fit a carbon brush to a Stannah 420 stair lift:

1. Safety First: Before starting any work, ensure the stair lift is turned off, and the power supply is disconnected to avoid any electrical accidents.
2. Access the Motor Compartment: Open the motor compartment of the Stannah 420 stair lift. This is usually located under the seat or at the base of the unit. You may need to remove some screws or panels to access the motor area.
3. Locate the Carbon Brushes: The carbon brushes are small, rectangular-shaped components made of carbon and graphite, and they make contact with the motor's armature. Look for the existing carbon brushes, which might have worn down or need replacement.
4. Remove the Old Brushes: Carefully detach the old carbon brushes from their holders. This may require gently pulling them out or undoing some clips or screws that secure them in place. Take note of how the old brushes were positioned so you can properly install the new ones.
5. Install the New Carbon Brushes: Insert the new carbon brushes into their respective holders and secure them in place as per the manufacturer's instructions. Make sure they are positioned correctly and have good contact with the motor armature.
6. Reassemble: Once the new carbon brushes are in place, reassemble the motor compartment by putting back any removed panels or covers and tightening any screws that were undone.
7. Test the Stair Lift: Reconnect the power supply and turn on the stair lift. Test the unit to ensure the new carbon brushes are working correctly and that the stair lift operates smoothly.
8. Regular Maintenance: Carbon brushes wear down over time, so it's essential to perform regular maintenance and inspections to identify when they need replacement. The frequency of replacement depends on the stair lift's usage and other factors.

Again, if you're unsure about any part of this process or lack experience with stairlift maintenance, it's best to seek professional help to ensure the job is done safely and correctly.

probably not the glue would have to conduct electricity.

Buy the new brushes from the manufacturer. You already have the old ones out - put the new ones in the same way you took the old ones out.

Take one of the brushes to a good hardware store and match them up with new ones.

hi try potts in derby babbington lane ,very help full

Generator replacement brush notice:
1, from the model and material needs and the original brush.
2.It is best to grind the new brush to the Radian size of the old brush.
3. pay attention to adjust the brush grip pressure.
4. the carbon brush size should be equal, not too big or too small. The carbon brush is not subject to force in the process of placement.
5. pay attention to the carbon brush and armature to have obvious contact, do not push the carbon brush in.


Generator brush replacement method:
1, the first with a special wrench loose brush braid fastening screws, loose fastening screws should not be loosened excessive, to prevent screw loosening and falling off.

2, take off the carbon brush braid, the carbon brush and the pressure-equalizing spring at the same time. When installing a carbon brush, put the brush into the brush grip.
3, then press the equalizing spring.
4.Use special wrench to fasten the brush and braid to fasten the screw. When fastening the screw, it is not necessary to exert too much force to prevent the screw from being damaged.
5. Check that the brush moves freely in the brush grip, and the spring can be pressed in the center of the brush.

First - stop using the machine! The black material in the exhaust filter is carbon dust from the carbon brushes in the motor. The fact that the motor quickly smells hot and is shedding so much carbon indicates that the carbon brushes are worn to their limit (or damaged). They need replacing. Don't use the machine again until the new carbon brushes are in place or you risk causing irreparable damage and will be in line for a costly new motor. Carbon brushes are usually not expensive but, depending on your expertise, you may need someone to fit them for you.
You don't tell us the make or model of your vacuum so that's about all I can say. Good luck.

google for sources. In the 80's i was employed by a co that probuced brushes according to specs. We received them in bags, or envelopes, etc. If you cannot find them through the orig. mfgr., send the remaining brush or the holder, with as much of the brush as is remaining for proper dim. estimate and brush composition. some brushes have the composition of dry charcoal. while some such as "EGO" can substitute for a very soft pencil.

Solent Tools have a full range of Dyson brushes available. Tel 023 8057 8057. www.solenttools.co.uk

hi Many universal motor malfunctions are caused by wearing down of the carbon brushes, the soft blocks of carbon that complete the electrical contact to the motor's commutator. When these brushes become worn, the motor will spark, and electrical contact may be incomplete.try this
Step 1: To sight-check the carbon brushes, remove the screws that hold the brushes and brush springs into the brush holders at the sides of the commutator. The screws will pop out of the screw holes; turn the motor over to tap out the brushes. The ends of the brushes should be curved to fit the commutator; if they're worn down, new brushes are needed.
Step 2: To check carbon brushes with a continuity tester, remove the motor lead wires from the circuit. Tag the wires as you disconnect them so that you'll be able to reconnect them properly. Hook the tester clip to one motor lead and touch the probe to the other lead; the tester should light or buzz. Slowly rotate the motor shaft, keeping the tester in position. If the tester doesn't light or buzz, or if it flickers or stutters when you turn the motor shaft, the brushes should be replaced. If the springs behind the brushes are damaged, they should be replaced as well.

Step 3: Replace worn carbon brushes and damaged springs with new ones made specifically for the motor. The model information (number and make) is stamped on a metal plate fastened to the motor, or embossed on the metal housing of the motor. If you can't find the model information, take the worn brushes and springs with you to an appliance-parts store to make sure you get the right kind. Insert the new springs and brushes in the brush holders, replace the brush assemblies, and secure the new brushes with the mounting screws that held the old brushes.