How easy to pull furnace fan out?
Today my furnace fan started screaming like a banshee on startup. It howls for a few seconds then quiets down. I know I need to pull it apart and lube the bearings, if equipped, or otherwise effect...
Forum Discussion
A friend and I pulled their furnace out last year. At the start of the season he installed the batteries in reverse polarity and blew the board. (oops)
If you have to pull it right out, easy to get out. You should install a plug for the end of the gas line to cap it off until you are ready to re-install it.
If you have to disconnect wires, there's a few in there that can be confusing. We made a detailed diagram (I thought), but when we went to reconnect it, something didn't seem right and I had to make up an extra wire with a connector. His kid may have walked off with a piece of wire, we just don't know. Taking a few photos may help as you disconnect things if you're taking a bunch of it apart.
We had to pull off the exterior vent cover to get the furnace out on his. They use a type of putty to seal it to the wall so you should get some new stuff for re-installation.
Getting it back in was a bit of a PITA as something kept hanging up on the enclosure. Getting the gas line tightened up again was hard to reach in. Unless you are confident with connecting gas fittings, I would get a bottle of gas leak detector to make sure it's a tight seal. If it doesn't fire up at first, there could be air in the line you'll need to purge. Opening a burner on the stove and getting it to light should do it.
As above, maybe you can just do it without pulling it right out and then you can ignore what I said.
If the fan assembly needs to be replaced, I'd suggest buying one online if you can wait. A local RV dealer will cost you a small fortune in comparison.
Otherwise, it's pretty simple. As per Haynes manual, installation is reverse of removal.
If you have to pull it right out, easy to get out. You should install a plug for the end of the gas line to cap it off until you are ready to re-install it.
If you have to disconnect wires, there's a few in there that can be confusing. We made a detailed diagram (I thought), but when we went to reconnect it, something didn't seem right and I had to make up an extra wire with a connector. His kid may have walked off with a piece of wire, we just don't know. Taking a few photos may help as you disconnect things if you're taking a bunch of it apart.
We had to pull off the exterior vent cover to get the furnace out on his. They use a type of putty to seal it to the wall so you should get some new stuff for re-installation.
Getting it back in was a bit of a PITA as something kept hanging up on the enclosure. Getting the gas line tightened up again was hard to reach in. Unless you are confident with connecting gas fittings, I would get a bottle of gas leak detector to make sure it's a tight seal. If it doesn't fire up at first, there could be air in the line you'll need to purge. Opening a burner on the stove and getting it to light should do it.
As above, maybe you can just do it without pulling it right out and then you can ignore what I said.
If the fan assembly needs to be replaced, I'd suggest buying one online if you can wait. A local RV dealer will cost you a small fortune in comparison.
Otherwise, it's pretty simple. As per Haynes manual, installation is reverse of removal.
