Mark II Replacement Blower

Does anyone have a part number for a replacement blower
from say Dayton or Fasco? (or...)
Gotta be cheaper than a Harman...
There are a couple of 75-76 cfm blowers, I found, I just don't know the actual
dimension of the flange that slides into the stove...
A part number would be great!
This is for a friend that bought a decent Mark II, but it has no blower...
She would be much better off "with" a blower...
Would like to help her out..

Thank you, Dan

Chuck...i thought the distribution blower was 135 cfm (or thereabouts).....

never mind....finally found a Mark II manual online and it shows it is 75cfm.....the 135 is for the Mark III

titleist1 wrote:....finally found a Mark II manual online and it shows it is 75cfm.....the 135 is for the Mark III

I noticed on your stove description you have the Mark III on "standby"...
It sure is nice having something like this when the power goes out!!
The majority of New Hampster was out of power on T-Day... and several days after..
made me realize how much I like that coal stove......

Dan

Here's the label off my old Mark I (think the II is the same ...) :

Mark I and II use the same CFM blower, Mark III uses a higher output unit...if memory serves me correctly.

Fasco model no. B75. Perfect fit for MK II. I bought on Amazon. Don't remember the price.

Thank you very much...
If our local dealer only has e.g. Dayton, they should be
able to cross it with that...
Or eBay/Amazon..

Thanks again... Dan

Funny to find this thread I am actually looking on Amazon right now for a new one, the one I have sounds like garbage and it's driving me crazy! I am hoping to buy a new one and give the old one a tune up to have as a back up. Well the price on Amazon is $72.95 that includes free 2 day shipping if you have the Amazon Prime.

Can you take the blower off the stove while it's going? I never looked back there so I'm not sure how it's set up, sorry if that's a totally dumb question.

The picture is of the one on my Harman Mark II right now, Fasco B75, but it looks like you already got that info

Do yourself a favor and upgrade to a PSC motor/blower.

It will take some detective work but will be well worth the effort.

Yes, you can take the fan off while the stove is 'going' it just won't blow the air through the heat exchanger tubes to direct it into the room.

There is a 3 sided 'sleeve' on the back of the stove that the flange on the outlet side of the fan slides into. You can slide it out, it may be a little stuck from dirt & dust if you have never had it out before.

Clean the grime off the squirrel cage fins, wipe the grime from the inside walls of the blower housing, there is an oil port you can put a couple drops of light lubricant into. I found it easier to clean up by removing the squirrel cage from the housing, there is an allen wrench screw that tightens against the motor shaft, loosen that and you can pull the cage out.

Below is a pic of the fan slid about halfway up & out of the 'sleeve' on the back of the stove.

Thank you! That helps me out a lot!

McGiever wrote:Do yourself a favor and upgrade to a PSC motor/blower.

If you ever find a part number for the Mark III let us know....

Dan...

There are 2 screws that hold a little cover with a mesh screen inside of it on the intake for the squirrel cage. I removed it and added a little piece of A/C filter on top of the mesh. It keeps the dust and animal fur out of the blower, ever so often I vacuum it clean.

We took the blower off and cleaned it last night, there was so much built up on the fins I'm surprised it was still going actually. However, even after the cleaning it still sounds just as bad. My husband said the shaft is bent from having so much build up for so long. Looks like I will go ahead and order a new one soon before this one quits.

This blower is old about 10-12 years and upon a lot of scrutiny it does not appear to have any oil points. The only holes seem to be the press points and my husband said if we go dripping oil into those it will go directly onto some wires and not be good. Since he is the one who understands these things I tend to just go with him on this. Is there a version of this blower that doesn't have oil points or not have parts that can be oiled? I'm just confused.

Regardless, a new one will be on order soon!

Here is a pic of the blower from the Mark III that I have handy, the semi-circle holes at the 12 o'clock and 6 o'clock positions are what I have been oiling all these years. There is a channel that runs down to the motor shaft from those holes (at least that is what I believe I can see from the side view through the housing).

The 75cfm combustion blower I have for the stoker (I am 'assuming' it is the same 75cfm distribution blower for the Mark II) has the same ports on it with the channels reaching the motor shaft.

Maybe I have been wrong all these 20+ years (just ask the spousal unit ) about those being oil ports, but I have never had a blower fail and I still have one on the shelf from 1992 as a spare! (Dang, there I go inviting that Murphy's Law Jinx Corollary to crater a blower motor by bragging!)