Heater fan motor broke

[jtbo]

Oh noes, now there is bit of dilemma, you see at Monday I need to start driving at 7am and just noticed that heater fan was quite silent, then I did put it to 2 and nothing then to 3 and I can hear relay saying click, fuses are ok.

Ok, I took motor + fan out from car, luckily it is very easy job in our cars, 5 mins later I was testing it with +12V and nothing, tested with amp meter and no, it does not take electricity, after lot of beating I still have not managed to get motor open, only ton of black powder has come out from inside. Part says it is made in UK, don't know if that is good or bad

Okay, I disassembled motor and found there is not much, but enough brushes and also noticed that one carbon colour rod was where it should not have been, it was detached from spiral thing where it should be, so put that back and found out that I do have bit of dilemma here, brushes are jumping out from their places before I can get that end cap placed properly, now I would need to find a way how I could keep brushes on place and release them after assembling end cap of motor, but I seem not to find any method suitable, how this should be done?

[Vart]

this isn't a failure of the heater cut off inside the heater air intake box? seems to be very similar to the symptoms i had when mine broke.

[jtbo]

I don't know, it just won't rotate even I connect removed motor to +12V feed, so should be in motor itself?

Still would need bit help how to put that motor back together, specially what is trick with brushes?

[bogbasic]

Hello, I agree it will be the resistance box/cutout in the black plastic air intake. Maybe just the contacts need cleaning but if not I would get another one from a scrap car somewhere and get a new fan motor too if it will not go back together again. Cheers, bogbasic.

[jtbo]

Hello, I agree it will be the resistance box/cutout in the black plastic air intake. Maybe just the contacts need cleaning but if not I would get another one from a scrap car somewhere and get a new fan motor too if it will not go back together again. Cheers, bogbasic.

But should motor run if I connect it to +12V source? As I have removed motor and tested it in house with +12V power and it does not run at all.

[Fuse]

But should motor run if I connect it to +12V source? As I have removed motor and tested it in house with +12V power and it does not run at all.

Yeah it should run if you connect it directly to 12V. I've had broken relay in our GL and motor ran fine when you connected it directly to 12V.. Though I've had broken motor too.

[jtbo]

I did measure car end of connector and power comes to there too so defineatly something with motor.

How to put damn thing together again? Those springs pushes brushes out from their place unless I hold them on place, but it seems impossible to hold them on place when I try to put that end cap back to motor?

How is it planned to put together?

Need to put it on place today, no panic no stress

[jtbo]

Right, I did order new one, it is fairly impossible to put old one together, no matter what metal wire tricks I tried it did refuse to co-operate and I then destroyed it with brute force method after getting enough frustrated for hours of trying.

Maybe it would be possible if metal wire would been bit thicker so that brushes would stay on place better, but still building ship into bottle would be easier, as only method I found to have even slight possibility to be succesful was to put metal wire trough anchor and try then make such a loop to other end that axle fits and brushes stay on place, then carefully try to put end cap on place and remove wire by pulling it out.
However impossible to keep wire on position and to get that setup even half way without brushes exploding out and springs flying all over, stability was something similar to quicksilver on greased ice...

60 euros total costs for new Delco unit, would been better at some other moment this expense, but isn't it always so?

[Chris_C]

You are quite right Jani, it is the motor at fault in your case. Tbh, it sounds as though thouse brushes where knackered... I'd imagine if they were a bit longer, they would hold in the seats easier, but when they are shorter and worn out, the springs force them out.

And yeah you are right, you always have to buy things when you can't afford it!

[jtbo]

Well, there was around 6mm left in other and 8mm in other, so quite likely too short. maybe could get it to work if I could find new brushes, but easier to fit new motor.

[jtbo]

Bloody new motor does not fit to old fan, really don't get it what is point to sell motor without fan when fan does not fit ?

also there is no place for hose that goes from heater fan motor to heaterbox, there is just big hole there.

Need to return this unit and change to more expensive then I guess and again many days until I will get new part.