[W126 Coupe] Air Cond Fan

[Dick Spellman]

Hi Henry:

You need to remove the knee bolster on the passenger side to access the 
cover to the blower up under the passenger dash.  I always remove the 
a-pillar foot panel down on the right by the door to make pulling that 
knee bolster (3 screws just under the vinyl dash area) and 1 plastic 
insert up into the center console (turn 1/2 turn and pop it out).  Then 
pull the knee bolster down to your right disconnecting the air vent tube 
on the way down and pull the knee bolster and it's ceiling out of there. 
T o get at that blower is  well it's not a lot of fun getting at this 
area because you need to lie on your back in a contorted sort of 
position to get up in there.   Once the knee bolster is out of the way 
it's just a matter of removing the cover screws and the thin rubber 
gasket (careful) and the screws that hold the blower assembly in place.  
Should be a 2-wire connector to disconnect from the harness.  That's it.

Do you have the manual?  If so, 68-150 and if you want to remove the 
glove box insert 68-140.  I have removed the glove box where it makes 
access or seeing what you are doing a tad easier.  Plus when you go to 
put this back together you can just grab the air vent hose and plant it 
on the knee bolster fitting.

What sort of noise do you hear?  Is it like a rattle and gets louder as 
you ramp up the fan or is it a steady groan?  If it's a rattle it's 
probably leaves.  These tend to just get eaten up with time and spit out 
into the cabin when you put the blower on high.  If it's the groan it's 
likely the fan motor bearings.  I've done two and both times the fan 
just quit without warning.  So the bearings never went just the brushes 
in my experience.  Mileage was 230k plus on both those 126 chassis MB's 
before that blower said goodbye.

By the way, I went back and read my notes on this very subject after Dan 
Landiss made a similar inquiry and I got all turned around on the air 
bag in his year car.  The 86 is no problem where you have the glove box 
and as it turns out the air bag is no big deal either except you have 
this big steel tube staring you in the face under there where the glove 
box would rightly be.

Dick

Henry Viveiros wrote:

>Hi Dick - The fan sound seems to be inside the car and changes when I press
>the fan buttons (High, Auto, Low). I don't know how to get access to the
>fan.
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