BMW E36 Heater and Air Conditioning (A/C) – Blower Motor Removal and Replacement
car year: 1995
car model: 318i
I have been able to get to the blower motor housing, removed the clips, but I am afraid to remove the housing for fear of breaking something. My manual only gets me to the housing and I can’t figure out how to get to the motor. Also, do the fan wheels convert over easily to the new motor ?
The Bentley repair manual does a pretty good job of describing the blower motor removal and replacement for the E36 chassis (3-series 92-98, 318i, 318is, 318ic, 318ti, 323i, 323is, 323ic, 325i, 325is, 325ic, 328i, 328is, 328ic, M3). The procedure is covered with text and photos, on pages 640-1 through 640-3.
Once you have the wiper arms, cowl cover and HVAC air intake plenum tray removed, you are ready to remove the blower motor housing cover.
* Release the two metal clips.
* Disconnect the control cable for the recirculation flaps.
* Turn the center cover fastener 1/4 turn.
* Remove the cover.
Once the cover is off, disconnect the electrical connectors from the motor. You must now remove the upper left (driver side) section of the blower housing by releasing the two clips along the outside of the housing (on the outside, past the recirculation flap).
You can now release the blower motor retaining strap and prepare to remove the motor. Note that the blower fan wheels will not easily fit through the cowl opening. You will have to gently compress or distort the fan wheels in order to remove the motor. If you are replacing the motor, it may be easier to cut or break off the fan wheels and remove the motor and fan wheels separately.
Your new blower motor will come with new fan wheels (well, a proper one will). The fan wheels can be pulled off the motor shafts. You would place the wheels into the fan cavity in the cowl, then insert the motor and install the wheels to the motor, while it is partially installed in the mounting cavity. You then push on the retainer clips to hold the fan wheels on the shafts.