The same motor brush breaks about every six weeks .None of the others are a problem .Is there a place where I can get replacement brushes for a reasonable price ?

None of the parts suppliers are listing motor brushes

https://www.google.com/search?q=8808+meat+slicer+replacement+parts&

however there are companies that sell carbon brushes by size and connection type

https://www.google.com/search?q=carbon+motor+brushes

..

Brushes are very easy to replace, but it sounds more likely that your motor has burnt out. Try brushes first if you have already ordered them though. There are two types of brush fittings on saws.
1] There should be a couple of small removable caps at the back end of the motor, on opposing sides. Just unscrew them and you should see the brass contact plate of the brush. Hook the brush out, fit the new one and refit the cap. Now repeat on the other side.
2] The vent cover at the back of the motor should be held on with a couple of screw. Remove the screws and the cover. You should see a brush on either side of the motor, probably in some sort of removable holder. Just manoeuvre the holder so that you can slide the brush out and replace with a new one. The brush may be connected with a spade connector or something similar to either the field coil or the brush older.
When you run the machine after this, have a look in the vents at the same end of the motor and you should see slight to moderate sparking. This is normal, especially with new brushes. If you see thicker, brighter sparking from one of the brushes, this indicates that the field coil is breaking down. If the sparking is bright and running around the whole back of the motor, and you are getting a sparking/raspy noise, then I am afraid your armature is breaking down. Either of these faults will cause your brushes to wear very quickly, if the whole motor doesn't completely fail in the process, and I would recommend having the machine checked by a professional repair agent.

The brushes are on the front and back of the motor, under the top cover. Remove the four screws on the top cover and remove it. The brushes are held in place by a coil spring, pull it back so the brush will slip out. Some brush leads have slip connectors and others are held in place by a screw, depends on what type router you have. Disconnect the brush lead then reverse the process to install the new brush.

Look under the bottom. Locate the Grill section covering the brushes. This will tilt down when opened. Try either side to see which part flips open. When open, pull the brush toward you. It will pop out in your direction. Lift out the brush along with the Belt. The belt sits in a groove and it may be soft by now. Remove it. Get a new Belt at WalMart. Slip the new belt end up and around the motor pulley and the other end around the brush pulley. The belt will tend to be very tight and need your muscles. It wont brake, so use some strength to get a good connection. When the belt is on both the motor pulley and the brush pulley, push the brush back into the chamber and lock in place. Your done.

Use only BISSELL Style 10 Replacement Belts (#32074) in your BISSELL PowerForce Bagless.

1. Unplug cleaner from electrical outlet.
2. With Rotating Floor Brush removed from vacuum cleaner, grasp old Drive Belt and remove from Motor Pulley. Discard old Drive Belt.
3. Place new Drive Belt over Motor Pulley and stretch other end over Rotating Floor Brush in the space between the bristles.
4. Place ends of Rotating Floor Brush down into slots on sides as shown.
5. Turn Rotating Floor Brush by hand several times in the direction of Motor Pulley. If properly installed, Drive Belt will center itself on Rotating Brush.
6. Reposition Brush Cover and snap back into place. Check to be sure all three latches are secured.
7. When you turn on the vacuum, do you see the motor that spins the belt spinning at the bottom? If not, it sounds like you may have a burned out motor.
   

If suggested solutions do not correct the problem, call:
BISSELL Consumer Services 1-800-237-7691
Monday - Friday 8 a.m. - 10 p.m. ET
Saturday 9 a.m. - 8 p.m. ET

I’m happy to help further over the phone at https://www.6ya.com/expert/jeremy_69f3cc28d95bf514

You have already removed the screws so lift the brush cover off. Then grasp rotating floor brush at both ends and lift. Clean strings,hair and other debris from rotating brush, paying close attention to the brush ends. Clean the debris from motor pulley and drive belt areas.Grasp old drive belt and remove from motor pulley. Place new drive belt over motor pulley and stretch other end over rotating floor brush in the space between the bristles. Place the ends of the rotating floor brush down into slots on the sides. Turn the rotating floor brush by hand several times in the direction of motor pulley. If installed properly, drive belt will center itself on rotating brush. Reposition brush cover and screw back into place. I hope that this helps you!

Turn the PN bottom up. With a Phillips screwdriver, remove the six screws in the base. Turn PN over and lift back of cover, then gently manipulate it until it comes off.
Slide the belt off motor shaft, if necessary. Remove the screws on each end of the brush and lift the end of the brush so you can remove the belt, if necessary. Place new belt on brush and place brush into slot. Replace screws and tighten. Pull belt back to motor shaft and slip on. Check belt for tautness. There should be a little play, but not much. Make sure belt is placed correctly and rotate brush a few turns.
I recommend cleaning the inside of the PN while you have it apart. Use the dust brush to vacuum as much as possible out.
Make sure the light cover is in the correct position. Carefully place front lip of PN cover into slot in front.of the PN. Carefully settle cover in place. Check around the PN to ensure cover and base are correctly placed. Turn PN over and replace screws, short one in front.

I do recommend letting a trained Aerus Electrolux tech do this, especially since the belt will have a one year warranty if he/she does it. Of course the belt should last longer than that, anyway.

Check for a pair of screws at the outer edge of the brush housing area. On this unit I believe the unscrew form above. Then look for any others on the bottom plate below the the brush. Belts can break or burn thru. If your s has burned, clean the burned rubber from the motor shaft before replacing. Spin the brush roll, if it rolls smoothly remove it , place the belt over the motor shaft, then onto the brush and use the brush to pull into place.Check for hair and thread buildup at the end caps of the brush. The nylon caps pop off for cleaning.

Could be the brush has resistance..
While the new belt is in place - spin the brush by hand.. The brush should spin reasonably freely..
If not - take the brush out and inspect it.. Be sure the ends are not jammed and you can snin them easily.. If not - replace the brush..
PS - the belt goes in one way.. If inside-out - it will not last as long..
Directions on packageing..

Hope this helps !!
rate mehood ;o)