Noisy Blower on Suburban SH-42 Furnace

[WagginMaster]

The Suburban SH-42 furnace on my 2004 Winnebago Adventure has a noisy blower. I have not been able to determine if there is something loose in the blower cage or if a bearing is going bad.
1. Any tricks on pulling the furnace out of the motor home? ( I know. December is not a time to be pulling the furnace)
2. Since furnace heats fine i am more inclined to repair it rather than replace it. Looking for source of parts if i need a new blower motor.

 

[Gary RV_Wizard]

Parts are easy to come by - just google something like "Suburban SF42 furnace motor"

Here is one source: http://www.adventurerv.net/suburban-furnace-replacement-motor-sf42-sf42f-p-26476.html
Amazon.com is another good one.

This video may help, but individual installations differ in detail.
https://www.youtube.com/watch?v=c5e5gZpvtb0

 

[scdiver]

The only trick for pulling the heater, at least on my Suburban, was on outside of the chimney there is a screw between the air inlet and the exhaust that holds the furnace to the chimney that must be removed to get the furnace out. When I needed to remove my furnace that screw stumped me for a few minutes.
The rest of the removal was pretty straight forward.

 

[rockman]

Don't know if yours is even close to ours (1995 Thor Residency) but ours did the same thing.  It was the bearings in the motor.  Got a new motor and with the help of an online video replaced it with the furnace in place.  Taking the furnace out would have been a bitch, replacing the motor in place was not too bad, took about 1 1/2 hours and holding my mouth just right.  One of the holes to undo one of the hex screws to remove the squirrel cage fan didn't exist, so I had to make one.  Fortunately, I drilled it in the right place cause it was pretty much a blind guess.  Good instructions in the video got me started in the right direction.

 

[Rene T]

Here's another good video:

https://www.youtube.com/watch?v=WNGSAliO0oE