PeachParts Mercedes-Benz Forum - View Single Post

LUVMBDiesels · #14 07-02-2008, 08:25 AM

There are two fuses for the climate control. The first one you should not pullas it does things like giove you your backup lights, transmission kickdown, and shuts off the heater valve. The second is for the blower motor and is a 25amp fuse.

To get to the motor (I just did mine) dothe following:

1) Remove the kick panel Three screws and a plastic plug unplug the aspirator motor as it is attached to the kick panel.

2) The black box under the dash is the air plenum. It is held on with three fairly long phillips head screws Remove it

3) plug the bloewer motor back in, turn the key to "on" and it a button on the CCU the fan should spin freely. If not, turn off with the key.

4) The fan is held in with three phillips head screws. It is hard to get under the dash to see, but they come out rather easily. Support the fan by putting one of the long air plenum screws back throuogh the hole in the fan assembly and into the cage nut on the plenum.You will see what I mean.

5) Once you have the fan out, look for obvious burn marks inside the motor.

6) I soaked my motor in BioDiesel overnight and it removed a ton of carbon, soot, and other junk. I also soaked the aspirator motor.

7) Let the motor dry throroughly.

8) I used a Q-tip and transmission fluid to lubricate the bearings.

9) Reattach the fan into the air plenum and with the cover still off, plug it in and try to get it to run. It should work.

10 If it works, reassemble the air plenum, attach the aspirator fan to the kick panel and put everything back. You will need to be careful with the rubber hose that goes to the aspirator fan as it can slip off when you put the kick panel back.

Good Luck!