WTB (US): Hakko 808 desoldering gun motor/parts donor

[MaxFrister]

i have a Hakko 808 desoldering gun with a bad pump motor.  I'm looking for a replacement motor or a broken donor gun with a functioning motor.

[james_s]

It's been a while since I've looked inside mine, but isn't the motor something pretty standard? Seems like it's a 380 size brushed DC motor, might not be too hard to find something that will fit.

Also are you sure the motor is bad?

[MaxFrister]

Not sure that the motor is bad, but it will not start when the pump is in a particular position.   If I advance it by hand a bit, it will start.   I tried removing the valves from the pump and it still fails to start at that same position.  This test is not definitive -- the place it stalls is still under load from the pump bellows rubber.

I have not tried to remove the motor from the machine.  I suppose that is the next step.

It would be nice if it is a standard DC motor. 

[james_s]

That does sound like a bad motor. I would suggest removing it, then you can both evaluate the situation and see if the motor is something you can find a replacement for. It's possible that just cleaning the commutator will get you going again, but if it's been heavily used it could be worn out.

[MaxFrister]

I have not been able to find very much technical info.  The Hakko part number is B1737 and does not appear to be available either new or used.

I opened up the the gun and the motor control board appears to have overheated and unsoldered on the ballast resistors.   It appears that this are ~100VDC motors -- certainly not cheap rc motors.

I'm still looking for a donor 808.

[james_s]

It's a 100V motor? I wouldn't have expected that, I figured they'd use the heater as a ballast like most hair dryers do. You might try opening up the motor once you verify it is bad and see if it can be repaired. I doubt you will have much luck finding a parts unit, the motor is probably the most common failure item and these are very nice tools. I can't imagine I'd ever want to get rid of mine unless it broke beyond repair.