Just found the PDF on replacing this.

By bring the whole thing down, I should specify: bring the motor and blower down and out the bottom of the tube.

I have a Coleman Model DGAA070BDTB. The combustion air blower motor (or which ever name you may choose), has failed. Now the fun part, how do I get it out of the combustion air tube? The section of pipe that it is in, is a straight rolled, spot welded section, both for it's seem, and to the spiral f...