KW W900, replacing blower motor

94 I would raise the hood, remove the breather tube tee and see what I seen. I'm thinking a 10mm socket on a quarter inch ratchet. Be sure to keep the polarity of the wires right or it will run backwards. Also the direction of rotation is marked on the squirrel cages.

 

It's common for those bolts to break off. So patience, also I always wash out the evaporator core while I'm there. Seal the panel back up really well also. Those two steps will maximize airflow into the cab.

 

That I can't help with I never had to do the one in the bunk of a KW. I come from a area with a lot daycabs.

 

Yeah what wore out said. DONT Know Why KW JUST DONT Switch The connectors around on one wire so you can't hook it up backwards. The one in the bunk either you have a way to lift the bed or you will have to pull the bed out and unbolted center panel to get to the blower. All likely hood it probably will be rotted out. To replace the whole unit is about $1200. If not new blower motor and clean the a/c and heater cores.