Hello! Thank you for the video! I am checking a dec fan from a radiator in a car, I do have about 8-100 ohms reading from one leg of the motor to the casing of the motor, that means it is bad, right?
Great video, I have a friction wheel on a Peugeot 207 which I think is causing a short to earth on three sensors on this vehicle. The motor has a high resistance between the two terminals (nothing to the case) Could the 18 + ohm resistance be causing issues? With that one motor disconnected all the faults clear and don't return.
What does it mean if a motor's continuity between the terminals goes up from 0.006 to 0.112 depending on where it is turned? I have a motor that passes every test except this one, and does not work. Is this something that can be fixed by taking it apart and cleaning it or something?
I'd suspect that the 0.006 is a short circuit within the windings, these shorts are often buried deep in the coil where the insulation has overheated and burnt. A motor re-wind company could probably sort it [at a price though].
Any idea what might be the problem with a cordless circular saw that runs but at about 50% of rotational speed. The batteries charge but there just isn't enough umph from the motor to cut even the thinnest bit of wood.
Could be a number of things. Most likely would be the battery not giving enough current [try a different one], then it could be a problem with the motor, the controller, or just possibly the bearings of the saw blade.
@@4qdThanks mate, the batteries are both charging to 18v+ (it's an 18v saw) so I've discounted them. Tbh think I'm going to sell it for parts just too much work for me
He actually says exactly where he connected them, to the brushes. If you dont know where to find these I suggest that you find someone who can explain this to you (;
Very useful, thanks for the video
Hello! Thank you for the video! I am checking a dec fan from a radiator in a car, I do have about 8-100 ohms reading from one leg of the motor to the casing of the motor, that means it is bad, right?
8 ohms is about the upper limit of what we have seen, I would think 100 is showing a fault.
Great video, I have a friction wheel on a Peugeot 207 which I think is causing a short to earth on three sensors on this vehicle. The motor has a high resistance between the two terminals (nothing to the case) Could the 18 + ohm resistance be causing issues? With that one motor disconnected all the faults clear and don't return.
18 ohms does sound a bit high to me, but you'd need to check the spec to be sure.
hi there im using a multimeter like you are doing and i get some nods but all of them under 10, would you mind helping me with it?
Is the checking between windings and case called a leakage test? I’ve heard the term but not sure what it is.
Yes that is a leakage test, it can be done with a high voltage test set but for the majority of low voltage motors a multimeter is good enough.
How easy does that motor turn.
I have one but seems tough to turn and the bearings are ok
It should be fingertip easy. We have had one where the magnets had broken internally and locked it.
so if im unable to turn the motor like you are doing that means its stuck/broken?
Yes, we've seen a couple of these motors where the magnets have come unglued from the case and have broken up inside and locked the armature solid.
What does it mean if a motor's continuity between the terminals goes up from 0.006 to 0.112 depending on where it is turned? I have a motor that passes every test except this one, and does not work. Is this something that can be fixed by taking it apart and cleaning it or something?
I'd suspect that the 0.006 is a short circuit within the windings, these shorts are often buried deep in the coil where the insulation has overheated and burnt. A motor re-wind company could probably sort it [at a price though].
Any idea what might be the problem with a cordless circular saw that runs but at about 50% of rotational speed. The batteries charge but there just isn't enough umph from the motor to cut even the thinnest bit of wood.
Could be a number of things. Most likely would be the battery not giving enough current [try a different one], then it could be a problem with the motor, the controller, or just possibly the bearings of the saw blade.
@@4qdThanks mate, the batteries are both charging to 18v+ (it's an 18v saw) so I've discounted them. Tbh think I'm going to sell it for parts just too much work for me
So what are the readings if the motor is not ok?
Higher resistance
@@rw2266I'm not getting any reading. bad?
Sadly not clear for an amateur where and how you exactly connected the probes . Not so useful for many
He actually says exactly where he connected them, to the brushes. If you dont know where to find these I suggest that you find someone who can explain this to you (;