Furnace Noise

[Gerry]

My sister-n-law are staying in a camper while thier house is being built and when they turned thier furnace, a Hydro-Flame 8511-2, on a few weeks ago it ran fine for about 4 hours then it woke them up with a screeching noise.
Her husband turned it off (he is deathly afraid of any gas appliance) and vowed to get a repair-man.
Repair man came and ran furnace and let screech go on and said run it and it may come out....It has been a week now and still noise...though she said not as loud and when she raps the inside cover it will vary pitch of sound.
Any place on this Hydro Flame 8511-2 that thay could lube or where should they start to look without takeing furnace out.
Gerry

[Lloyd Drinkwater]

My sister-n-law are staying in a camper while thier house is being built and when they turned thier furnace, a Hydro-Flame 8511-2, on a few weeks ago it ran fine for about 4 hours then it woke them up with a screeching noise.
Her husband turned it off (he is deathly afraid of any gas appliance) and vowed to get a repair-man.
Repair man came and ran furnace and let screech go on and said run it and it may come out....It has been a week now and still noise...though she said not as loud and when she raps the inside cover it will vary pitch of sound.
Any place on this Hydro Flame 8511-2 that thay could lube or where should they start to look without takeing furnace out.
Gerry

Jerry, fan motor bearings worn out or dry,fan blower wheel rubbing on casing remove to check shaft end play or up & down movement. These motors have sealed bearings you may add oil to shaft end felt in bell housing, temp repair, new motor required if blower wheel not rubbing.

[Gerry]

Jerry, fan motor bearings worn out or dry,fan blower wheel rubbing on casing remove to check shaft end play or up & down movement. These motors have sealed bearings you may add oil to shaft end felt in bell housing, temp repair, new motor required if blower wheel not rubbing.

Thanks Lloyd... I will try to convince him to take the thing apart to get a better view of things but I am sure he will not do it.
As I said on the other site he is deathly afraid of GAS appliances and he will figure working with noise is better then not working.
That's Gerry with a G...