Climate system blower, W124.
 

My climate system blower motor squeaks like a bird when on.
How big of a job is it to replace it?

Thanks
JackD

Jack,

Below is a description of what is involved in replacing the Blower motor on a 124 Body. The information, which I picked-up from "All Data" is for my car which is a '95 E300D 124 Body. It should be very similar to yours, if not identical. The labour time as set by Mercedes is approximatley 2.5 Hrs.

By the way, I also live in Montreal. Which part of Montreal do you live in?

Phil
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1995 Mercedes Benz E 300 (124 Chassis)

Blower Motor Service and Repair. Removing, Installing Blower Motor


Remove windshield wiper system. See Wiper Motor Service and Repair.
Pull out outside air temperature sensor (B10/5).
Remove cover (1); for this purpose unclip 8 clamps (arrows).
Unclip mounting strap (2).
Pull off flat plug on blower motor and remove blower motor (M2).
Reinstall in opposite order. Assure that the blower motor catches properly in the mount.


B. "Siemens/Thermal" Air Conditioner Unit :

Remove wiper system. See Wiper Motor Service and Repair.
Remove outside air temperature sensor.
Remove cover by unclipping 8 clips (arrows).
Unclip retaining strap (3).
Detach flat plug on blower motor and remove blower motor (M2).
Install in reverse sequence. Ensure that the blower motor engages correctly in the mounting. If the blower motor has had to be replaced, observe note.

NOTE : The "Siemens/thermal" air conditioner unit has been installed since 01/88. As only the Behr blower motor is available for all air conditioner units in the replacement parts market, the motor bracket also has to be exchanged when replacing the blower motor on the Siemens/thermal air conditioner unit boxes.



The Siemens/thermal air conditioner unit can be recognized by the bracket on the blower motor, which is secured with 4 screws (arrows) (this is 3 screws in the case of "Behr").


If the electrical cables are soldered to the blower motor, snip off immediately after the connections and solder a push-on bush to the red cable and a flat-pin terminal to the brown cable.

Scope of Work :

Remove bracket (item a) by unscrewing 4 screws (arrows).

Install new retaining strap and new bracket (items 2 and 3) with the existing 3 screws (arrows).
Install in reverse sequence.

I've heard those pesky sound before. When my blower fan failed, I've expected the motor finally quit. As it turned out, it was the motor regulator. I thought for a while I was in luck, but the regulator is not at all cheap. Labor is also pricey. I was charged more that 2.5 hours. The regulator sits on top of the motor.

i just bought a '87 300 TD, W124, and found a rebuild kit for the blower motor (new brushes) with complete instructions for removal and replacement at mercesdessourse.com.

got mine done a while back... $500 dollars and got it back in a few hours.