Latest Discussions : HVAC

busymom

12:38PM | 01/17/05
Member Since: 07/20/04
4 lifetime posts
I'm pretty handy, but I don't always know what things are called. I need some help with some part names.

I'm having problems with my Trane XE78. It makes a lot of noise everytime it kicks on. I was able to track the noise down to something that looks like a fly-wheel located inside what I think is the exaust manifold. The motor seems to be running fine, but it looks like the fly-wheel piece is rubbing against the inside of manifold for some reason.

I was able to add a couple of washers as spacers, which in turn moved the fly-wheel piece away from the housing, but that only worked for a few days, and now it's rubbing and making the noise again, so I'm positive that something in the fly-wheel assembly has worn out and needs replacing.

Am I using the right names for these parts? I think I'm handy enough to replace the fly-wheel piece, and the entire manifold if necessary, but I don't even know what parts to ask for. Again, the motor seems to be running fine, but I don't know if the whole thing is only available as an assembly or not.

Any advice from someone wiser and more experienced would be welcome.

Thanks!

JGRIZZ

09:49PM | 01/17/05
Member Since: 12/16/04
54 lifetime posts
sounds like an induced draft combustion blower motor. Also sounds as iff the bearings in the motor have worn and te shaft is tilting slightly and that the squirel cage wheel inside the combustion blower housing is warped, or that there is sufficient play in the bearings to allow the wheel to rub against the housing walls.

SOunds like u need a whole new combustion blower assembly. Make sure to replace the gasket as well. Then you need to find out what caused the motor to fail. Have the exhaust temperature measured to besure its within factory specs.

busymom

04:08AM | 01/18/05
Member Since: 07/20/04
4 lifetime posts
Thanks for the replies.

BV006516

07:26PM | 12/13/14
need to find part number for a XE78 ingitor


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