My Father bought power tools "in case I need it" and stored them unused for years in an unheated workshop.
I inherited several and just unpacked a Ryobi plunge router to use in Speaker cabinet construction. It seems unused but ran for less than a minute then stopped and won't restart.
Shaft spins freely and all electrical wiring etc test fine.
However, upon trying to remove the brushes to examine I found them to be stuck solid. I removed the brush holder assembly (30 year old Ryobi came with manual, parts list and exploded diagram !)
The carbon brushes are full sized, new, and seized due to corrosion in their (brass?) holders.
I've soaked them in contact cleaner for some time but to no avail.
The Router is too old to get replacement parts but otherwise in 'as new' condition so I am loathe to just bin it.
Anyone know how I can free the brushes ? Preferably so they can be reused.
I inherited several and just unpacked a Ryobi plunge router to use in Speaker cabinet construction. It seems unused but ran for less than a minute then stopped and won't restart.
Shaft spins freely and all electrical wiring etc test fine.
However, upon trying to remove the brushes to examine I found them to be stuck solid. I removed the brush holder assembly (30 year old Ryobi came with manual, parts list and exploded diagram !)
The carbon brushes are full sized, new, and seized due to corrosion in their (brass?) holders.
I've soaked them in contact cleaner for some time but to no avail.
The Router is too old to get replacement parts but otherwise in 'as new' condition so I am loathe to just bin it.
Anyone know how I can free the brushes ? Preferably so they can be reused.
Brushes absorb moisture, they expand and crack jamming them in the holders.
Nothing new about this issue.
Trying to re use them is a path to failure again.
If you can disassemble the tool, you might be able to push them out from one direction or the other.
90% of the time the brushes will be destroyed.
There should be a part number for them and should hopefully be an equivalent available.
Nothing new about this issue.
Trying to re use them is a path to failure again.
If you can disassemble the tool, you might be able to push them out from one direction or the other.
90% of the time the brushes will be destroyed.
There should be a part number for them and should hopefully be an equivalent available.
I didn't know carbon brushes absorb moisture!
Drone, if you can't get the actual OE part, it is relatively easy to buy a replacement that is slightly bigger and sand the edges down with a sanding block to reduce them to the right dimensions (if you can't buy the right size that is). There are many sellers on eBay and the like selling generic brushes. They quote all the dimensions and you look for a similar mounting setup on the brush.
Drone, if you can't get the actual OE part, it is relatively easy to buy a replacement that is slightly bigger and sand the edges down with a sanding block to reduce them to the right dimensions (if you can't buy the right size that is). There are many sellers on eBay and the like selling generic brushes. They quote all the dimensions and you look for a similar mounting setup on the brush.
Had a quick search - "electro-graphite" brushes may be what you want - no swelling. Metal-filled brushes can swell from oxidation in hot humid environments, reson-bonded brushes often expand when exposed to over-high current densities (cooking themselves).