Blower On Old Furnace Seems Louder Than Normal
#1
04-06-16, 09:35 AM
Blower On Old Furnace Seems Louder Than Normal
Hello all. My old furnace blower seems to be making more noise than normal, what can I do to quite it down some? Oil?
....
Here is an old thread about the furnace in question to give you an idea what I am talking about.
Thanks for reading my post.
.... Here is an old thread about the furnace in question to give you an idea what I am talking about.
Thanks for reading my post.
#2
04-06-16, 10:10 AM
Tried White Grease ... No Go
I tried using some white grease on the parts I saw spinning, but it didn't help very much. Maybe the blower needs to be replaced? How to I go about finding another blower for that furnace?
#3
04-06-16, 06:42 PM
Bearings Bad?
Are there bearings in the blower? If so they are bad and that is what is causing the noise. Can anyone tell me where I can get a replacement blower for this furnace?
Thank you for reading my post.
Thank you for reading my post.
#4
04-06-16, 09:53 PM
Group Moderator
You MAY be able to oil the bearings with 3in1 motor oil.
You are not going to find a replacement blower for that dinosaur right off the shelf. You may be able to remove the blower and replace the bearings.
(Montgomery Wards furnace from early 1970)
You are not going to find a replacement blower for that dinosaur right off the shelf. You may be able to remove the blower and replace the bearings.
(Montgomery Wards furnace from early 1970)
#5
04-07-16, 09:07 AM
But Where?
How do I find replacement bearings for something like that? I'm not even sure where those bearing are.
#6
04-07-16, 09:23 AM
Group Moderator
There is a center shaft thru the blower wheel. There will be a bearing on each end of it. The one bearing on the side in the picture is right behind the pulley.
#7
04-07-16, 02:26 PM
Blades Missing On Wheel
I did a count of the wheel blades to get an idea of the size ... some of the blades are missing so I guess the blower should be replaced. I wanted to try and get just the blower wheel, but I don't see a way to get the old blower out of the old housing, so I think it best to get it with the housing if I can find it. The problem is finding the right size.
#8
04-07-16, 03:48 PM
Group Moderator
You are not going to find a blower assembly to bolt right in there. To replace the wheel you first need to remove the pulley for access to the bearing block. The bearing blocks should bolt to the mounting arms as the arms are welded to the housing.
You need to measure the diameter and the depth of the blower wheel to find a replacement.
I think you'll find the bearings look something like one of these.........
You need to measure the diameter and the depth of the blower wheel to find a replacement.
I think you'll find the bearings look something like one of these.........
#9
04-07-16, 07:53 PM
Bad Vibrations
That housing is really vibrating bad. It's not anchored down and it was shifting around in the compartment. I used some bricks to keep it from moving ... but the blower housing is rattling and vibrating pretty bad, the thin paneling is moving, rattling too is there a chance it could damage the heat exchange?
The metal should be much more thicker than the paneling. Should I shut it down? I hate to because it's going to be cold all week. If the bearings give out completely will the shaft stop turning?
The metal should be much more thicker than the paneling. Should I shut it down? I hate to because it's going to be cold all week.
If the bearings give out completely will the shaft stop turning?
#10
04-07-16, 08:09 PM
Group Moderator
Help ??
I can't really offer you much more help. You know what the problem is. Now it needs to be addressed. You're putting a bandaid on a very old furnace.
There is a good chance the blower wheel could come apart. The bearings could seize. The blower housing is supposed to be mounted.
Should you shut it done.... probably yes. If you need heat then you can't shut it down and you roll the dice that it will keep running.
I can't really offer you much more help. You know what the problem is. Now it needs to be addressed. You're putting a bandaid on a very old furnace.
There is a good chance the blower wheel could come apart. The bearings could seize. The blower housing is supposed to be mounted.
Should you shut it done.... probably yes. If you need heat then you can't shut it down and you roll the dice that it will keep running.
#11
04-08-16, 09:53 AM
Got Measurements
I decided to shut down the furnace and pull the blower. I had to take the shaft out by removing the screws for the bearing and pounded it out with a hammer and rebar. I took several picture to show exact measurement so hopefully someone will be able to help me match it up.
#12
04-08-16, 09:59 AM
Shaft and Bearing Measurements
The shaft is not bent or anything ... do I have to get the bearings separately or will they come with the wheel? Hopefully this will be enough info to help match a replacement.
#13
04-08-16, 02:27 PM
Will this wheel work for me?
I found this on Amazon ... I don't think it comes with a shaft, but there has to be a shaft for it, but where? I need to find bearings that will fit that shaft too. Will this wheel work for me?
#14
04-08-16, 04:33 PM
Group Moderator
If the bearings aren't bad...... no need to replace them. That blower wheel is wiped out. No wonder you had a vibration issue. I've never seen a wheel missing half the vanes.
No... it doesn't come with a shaft. You already have the shaft. Make sure the blower hub is the same size as the shaft you have.
Also.... you need to watch the direction of rotation. It should be marked on the blower housing. The blower wheels are manufactured for CW or CCW rotation and are not inter-changeable.
The blower wheel in the link has a 1/2" shaft.... no good. You need what looks like 5/8".
I see what looks like three bearings ? There should only be two.... did one fall apart ?
I would get the bearings locally. There are bearing shops everywhere. If you need new ones.... take them an old one and they'll match it for you.
There are several bearing places in your area.... Accu Drive, Erie Bearings, Kaman Industrial.
No... it doesn't come with a shaft. You already have the shaft. Make sure the blower hub is the same size as the shaft you have.
Also.... you need to watch the direction of rotation. It should be marked on the blower housing. The blower wheels are manufactured for CW or CCW rotation and are not inter-changeable.
The blower wheel in the link has a 1/2" shaft.... no good. You need what looks like 5/8".
I see what looks like three bearings ? There should only be two.... did one fall apart ?
I would get the bearings locally. There are bearing shops everywhere. If you need new ones.... take them an old one and they'll match it for you.
There are several bearing places in your area.... Accu Drive, Erie Bearings, Kaman Industrial.
Last edited by PJmax; 04-08-16 at 04:59 PM.
#15
04-09-16, 11:58 AM
Can't Local Wheel with that Shaft
I haven't been able to locate a wheel with a 5/8 shaft hole. The most I could find was 3/4. I was figuring on getting the shaft that fit's that particular wheel.
#16
04-09-16, 12:06 PM
Group Moderator
You could do that but then you'd also need new bearings, mounting blocks as well as a new pulley.
#17
04-09-16, 03:15 PM
Pulley
From what I can tell it looks like the pulley would work with the 1/2 shaft with the screw I could even find a longer screw. So correct me if I am work on that.
I can use the size of the shaft to get the right size bearings? Couldn't I get them online with the shaft size? I didn't notice any mounting blocks with the unit. I guess I don't know what they are.
I can use the size of the shaft to get the right size bearings? Couldn't I get them online with the shaft size? I didn't notice any mounting blocks with the unit. I guess I don't know what they are.
#18
04-09-16, 04:26 PM
Group Moderator
No....a longer bolt will not allow a 5/8" pulley to be used on a 1/2" shaft. The pulley and the shaft must be the same diameter.
What holds your bearings in place to the housing ? The bearing holder can be called a block.
What holds your bearings in place to the housing ? The bearing holder can be called a block.
