Heres a little guide whilst I serviced mine. I was trying to locate a rattle noise that has been annoying me for the past few weeks, this was like a ticking noise behind the glove-box only with the fan on low speed and as the car was pulling away in low gear.

 

1:

 

Remove glove-box so you can see more, also remove the plastic trim that is underneath the glove box. You might not need to do this to get the motor out but i did it anyway.

 

2:

 

You'll be able to see the blower fan housing on the left. look underneath to fine the motor part which is held on with 3 screws. Disconnect the harness plug and also there is a little black ribbed tube. Mine had a rubber molded cover over the base of the motor too. Undo screws and drop it out.

 

3:

 

My fan assembly was black with grime, several leaves and the motor housing that is exposed in the housing was rusty. Nice to think this shit is coming out the vents :) So one 10mm nut off the top of the fan molding and you can pull the blower of the motor spindle. Gave it a good scrub.

 

4:

 

On the bottom of the motor there are two screws, whip em out and then gently squeeze the two rubber blocks on the side and pull gently. Do not yank it because the wires will get ripped off the graphite bushes! You have to wiggle out the harness socket too.

 

This is what you will have:

 

End cap

 

Contact assembly:

 

Main motor housing:

 

Inside you'll see the motor spindle - pull this out keeping an eye out for and spacing washers (very important these go back the same way).

 

Inside mine it was black with copper and graphite dust. Enough to make several pencils! Clean it thoroughly out with meths. Remove any rust and protect etc.

 

5:

 

If you look closely now it's all clean you can see brass sleeves where the motor spindle sits at either end. Inside is a felt like washer thing which is designed to retain oil! I let some 3in1 soak into it for an hour.

 

6:

 

The motor core:

 

Clean this up again with meths. Don't remove what looks like chewing gum stuck on it as these are balance weights.

 

What you need to do is smooth the copper contact on the left in the picture. You can see how much they have worn down. If you have access to a lathe stick it in and gently get a file on there as it spins. Use your judgement - if yours is very worn and there is a deep grove it's best to just leave it.

 

When this is done use the blunt edge of a stanley blade to scribe out the gaps between each copper segment.

 

Before:

 

After:

 

Clean it all up to remove and copper swarf and reassemble & reinstall into the zed. With any luck the heater blower should now be free of any vibrations! Oh yeah vacumn the inside of the housing under the glovebox too!

I too have a rather annoying rattle that sounds like its coming from the glove box, it intermittant and going over bumps makes it rattle. Its kinda like a chirpy plastic rattling noise, do you think this would cure it?