| Electronics > Repair |
| How to unfix this fan from the shaft of this DC motor? |
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| saaluc:
--- Quote from: langwadt on December 12, 2024, 05:01:24 pm ---better to bend them out with pliers so you can bend them back for reassembly --- End quote --- --- Quote from: elektryk on December 12, 2024, 05:13:02 pm --- --- Quote from: langwadt on December 12, 2024, 05:01:24 pm --- --- Quote from: elektryk on December 12, 2024, 04:45:33 pm ---Apply a bit of "dremeling" on every crimps. --- End quote --- better to bend them out with pliers so you can bend them back for reassembly --- End quote --- It may work on this small motor, with larger ones from impact wrenches or cordless drills I prefer dremeling because it is to hard to bend them. --- End quote --- I bent all of them out, but when I pull the metal cap, it does not come out, it does not move up even a bit. It seems that something else is preventing it from coming out. what is the solution? Update: I levered the metal cap from beneath, and it could be pulled out. One of the brushes has been broken in half and has lost contact with the collector. |
| timeandfrequency:
--- Quote from: saaluc on December 14, 2024, 03:25:56 pm ---[...], can the fan be refixed strongly on the new DC motor's shaft? Or I will need a new fan too? --- End quote --- Yes you can refix the existing fan rotor on the new motor's shaft. It's a press fit. If there's a brass sleeve on the existing shaft, it will need additional work, but it is still possible. Tell us a bit more about that fan assembly. Where does it come from ? What it is used for ? How much would it cost to buy a new one ? |
| Poroit:
I bent all of them out, but when I pull the metal cap, it does not come out, it does not move up even a bit. It seems that something else is preventing it from coming out. what is the solution? [/quote] Do I read this correctly? You have bent out the clips on the bottom of the motor?(attached) The fan is still attached to the motor shaft at the other end, so you wont be able to pull the guts of the motor out easily if at all. You will still need to remove the fan to access the motor mounting screws that timeandfrequency pointed out. |
| saaluc:
--- Quote from: Poroit on December 16, 2024, 06:41:11 am ---I bent all of them out, but when I pull the metal cap, it does not come out, it does not move up even a bit. It seems that something else is preventing it from coming out. what is the solution? --- End quote --- Do I read this correctly? You have bent out the clips on the bottom of the motor?(attached) The fan is still attached to the motor shaft at the other end, so you wont be able to pull the guts of the motor out easily if at all. You will still need to remove the fan to access the motor mounting screws that timeandfrequency pointed out. [/quote] I did not want to pull out the "guts" of the motor, but I wanted to remove only the "cap". As I updated the previous post, I have now removed it. One of the brushes is broken and has no contact with the collector. |
| saaluc:
--- Quote from: timeandfrequency on December 15, 2024, 02:48:37 pm --- --- Quote from: saaluc on December 14, 2024, 03:25:56 pm ---[...], can the fan be refixed strongly on the new DC motor's shaft? Or I will need a new fan too? --- End quote --- Yes you can refix the existing fan rotor on the new motor's shaft. It's a press fit. If there's a brass sleeve on the existing shaft, it will need additional work, but it is still possible. Tell us a bit more about that fan assembly. Where does it come from ? What it is used for ? How much would it cost to buy a new one ? --- End quote --- The fan assembly is for a haidryer. There is no new one to buy. |
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