Yes - Thanks. Just knowing where to look for that third nut made all the difference. It's still an incredibly challenging job to get the new matrix in, but at least now it's possible!

Thanks for the prompt response.

If there are three, where is the third one located?

I know I'm a bit late to this thread, but I'm struggling to refit the front heater matrix. The old one came out with both pipes broken, and there doesn't seem to be enough room to fit the new one without damaging it. Can anyone tell me: are there two or three 10mm studs holding the heater box in ...

mikeonb4c wrote:
What an excellent idea

I presume this is the heater fan motor we are talking about?

I was talking about the radiator fan motor, but I assume you could do a similar repair on the heater fan motor. Mine is still going strong so I have not had a reason to take it of and have a look yet.

Can I just expand on this a little. The problem is not so much that motors are blocked up with dirt, more that the carbon brushes can't make a good electrical contact with commutator.

That might be because they are dirty, but its more likely that the brushes are worn out. Cleaning them up and re ...