B2782B blower Help

[NorthIdaho3200]

During this last snow season, I accidentally ran over a tarp and it tore up a plastic seal that is on the impeller. I finally got the seal. In order to replace it, I need to take off the impeller. The only way to get the impeller off is to remove it from the box of the snow blower. So today, I removed the bolts holding the impeller to the side of the box and the bolts holding the center drive unit to the middle of the box. So right now, the impellers and the drive unit are free within the box and being supported by a floor jack.


I then moved on to the rear of the unit. I removed the main drive gear and chain. I also removed the set screw on the collar that is on the shaft. As indicated by the yellow arrow. I can't seem to get the collar on the shaft off and I can't get the shaft to go towards the front. (using reasonable mallet strikes)

The three bolts that are poking in from front to rear are really loose after I removed the nuts that used to hold the triangular piece that surrounded the shaft.

Can somebody please tell me how to pull everything out to the front? Thanks!

 

[diesel85]

I think you'll need a bearing puller. It looks like a set of jaws that grab the bearing and push against the shaft to extract it.

 

[LouNY]

The bearing retainer that your arrow is pointing at needs to come off first,
there are many styles of retainers also some places will use two set screws in each hole.
Is there just one threaded hole in your retainer?
Check for a second threaded hole and a second set screw in the hole.
Then some of them are also eccentric and will need to be tapped CCW I believe to loosen up,
and some just need some rotational tweaking to loosen up or use a bearing splittter between the retainer and the bearing.

 

[NorthIdaho3200]

Then some of them are also eccentric and will need to be tapped CCW I believe to loosen up,
and some just need some rotational tweaking to loosen up or use a bearing splittter between the retainer and the bearing.

That is what I have found out. That it is a eccentric bearing. You remove/loosen the set screw and then tap the other hole CCW. What I need to find out
is if the collar is reusable or if I need to buy a new one. I will try to remove it later today.

I never heard of an eccentric bearing before. I thought that eccentric just meant a crazy person with a lot of money!

 

[LouNY]

It's just the retainer that is eccentric onto the bearing hub,
yes you can usually reuse them.
Slide them on, drive it snug and reinstall the set screw.

 

[NorthIdaho3200]

I "removed" it today. Counter clockwise was not the proper direction. I should have looked at the direction that the fan rotated which is counter clockwise when looking at it from the rear. To remove it, the proper direction would have been clockwise. My mistake caused me to really tighten it and elongate the hole. I was able to move one of the holes over the keyway and cut it with a drimmel tool. The whole bearing assembly is only $19 or so. Now I need to find a way to get the bearing off of the shaft. The bearing sits in the triangular piece of sheet metal. I don't know if a puller would bend it.

I knew that this was going to be a chore. That is why I waited for out last snow storm.

 

[LouNY]

Sorry about that.
With the retainer off the bearing should slide on the shaft.
You are correct the little triangle is not very strong, the two triangles sandwich the bearing and the retainer holds the bearing.
That bearing is on the pto side of the impeller?
What supports the rest of the impeller on the other side?

 

[aczlan]

The simplest way would probably be to grab it with a bearing puller and pull it off. I assume you're going to replace it ( you would be foolish not to), if that's the case, you can probably just warm it up with a torch to get it to expand, then try and pull back on it.
I have had some where the only way to get them off was to cut the bearing either with a grinder, or with a torch.

Aaron Z

 

[aczlan]

Sorry about that.
With the retainer off the bearing should slide on the shaft.
You are correct the little triangle is not very strong, the two triangles sandwich the bearing and the retainer holds the bearing.
That bearing is on the pto side of the impeller?
What supports the rest of the impeller on the other side?

Generally speaking, a snowblower like that one has the shaft go through the impeller, then forward to the gearbox in the middle of the cross auger in the front.
As such, it pretty much has to come apart from the back unless you want to split apart the gearbox on the cross shaft which can get interesting.

Aaron Z

 

[NorthIdaho3200]

The shaft goes through the back, through the fan and into the gear box. The gear box is supported with a bracket from above and the ends of the auger connect to bearings that are bolted to the sides. Here is a pic and the reason why I have to do this. I had a tarp over a $7 worth of concrete that was under the snow.