W900 Blower motor in cab

a good clip-on amp probe meter is worth it's weight in gold for situations like that.

It's not your blower motor, but in the guard during a flood battle, we were replacing fuel pumps till days end and ran the system out of pumps. we still had mechanics who were troubleshooting them and following the procedure for that. Kept coming up, replace the in-take fuel pump.

I finally took about 12 pumps and tested them with a battery and an ampmeter. Startup, 5 amp. Running, 2 amps. Fuse, 3 amp. problem solved with a 50 cent fuse.

Documented it and sent it to the TACOM and they gave system approval to put in a 7 amp fuse for all army 2 1/2 and 5 ton trucks.

those start-up amps will kill you just as well. Just longer to do it.

 

For what reason would you need to do this??? All you have to do is take the panel off of the HVAC box under the hood on the right side of the firewall and the motor is mounted to that.

 

thats right i dont know what i was thinkin......

 

Depends on the condition of the HVAC box. If it is in good shape, no rust, bolts come right out without nut zerts spinning, half hour to an hour to do the whole job. If you are installing a new motor I would buy the two plastic fan wheels or whatever you want to call them that go on each end of the motor, most of the time they break while trying to remove them, they get pretty snug on the shafts. Pretty simple job, just make sure you hook it back up the same way or you will have the motor turning in the wrong direction and make sure the fans are rotating the correct way or you will have no airflow. Pretty easy, motor and fans have directional arrows.