Carrier Draft Inducer for a 58MCB100 10120
I've never had to re-gasket one one of these when replacing the motor. Removing the manifold may help you since you'll have more room, but I wouldn't remove the burner box. Keep in mind behind the motor are four long plastic spacers/legs that the screws go into. You'll need to re-use those. Also, the new motor doesn't come with the rubber cap for the unused drain port on the motor, so save the old one.
The collector box has a triangular opening, when you push the motor in place don't force it but it will seat in there. Be careful you don't pinch the pressure switch hoses under the motor.
"We always fix it right the second time".
All posts are strictly my opinions and not those of my employer. I cannot make statements on behalf of my employer.
All advice posted by me is for educational purposes only, HVAC repairs should only be conducted by trained & qualified people.