[redd_planet]

Toro Model 26622. Last cut of the year the mower was vibrating badly when the blade not engaged. Also heard a metal on metal sound. With a beautiful January day in Pittsburgh I'm digging in, pulled on the blade and it moves up and down about an inch. After removing some parts I found the brake shoe disintegrated and the bracket is rubbing on the brake drum, hence the metal on metal sound. Here is a link to an exploded view.

Parts and Diagrams for Toro Consumer 26622, Lawnmower, 1990 (SN 0003101-0999999)

I'm all the way to the photo. Studs are part 29. Star shaped piece with four holes is part 39 (hub assembly). The round piece is part number 40 (brake drum). The bearings are clearly shot, the plastic cup fell out, assume with it the grease. I sprayed with PB Blaster as I'm guessing something has to be separated.

I'm at a loss on how to proceed. I do have a "donor" 26622 for parts.

Can someone help me?

 

[XR55]

This may be like the Lawn Boy BBC setup. Use GREAT CARE, the assembled parts are under very high spring tension and require special tools to safely work on and repair this BBC assy. It could fly apart hurting anyone with in range of the flying parts. Repairing this should be done by trained personal only because of this.

 

[bwdbrn1]

Maybe there's something in this manual that'll help out. Model 26622 drive and blade control types are listed on page xii. Look at Chapter 6 for information about the BBC system.

View attachment 13929

 

[redd_planet]

bwdbrn1, thanks for the link, I'll study that, maybe it will answer my question.

XR55, I know the BBC mechanism on the handle is under tension/compression, I've had the cable replaced probably three times and always let a Toro dealer do it (I've experienced the parts flying out). As for under the deck, I've removed just about everything except what is shown in the photo, not sure anything left under compression. But thank you for the safety reminder.

 

[XR55]

Bbc

I think that my comment applies to only the Lawn Boy mowers after checking the service books, and that the BBC used on Toro mowers is of a different design.

 

[redd_planet]

It's the middle of March and grass cutting time not far away. So figured I better start working on the blade brake clutch assembly again. Back in January I sprayed PB Blaster all over the Hub Assembly 42-6750. Started pulling and prying this morning and it's off! I've attached a photo of the underside with everything removed. I'm on ebay now, option to buy a new Hub Assembly for about $38 or buy a used one with other hub parts for $13. Also planning to replace the belt while I'm in there. Hopefully I'll be up and running in April! Just have to remember how everything goes back together.

 

[redd_planet]

Replacement parts arrived today.

* Hub Assembly 42-6890 (6750)
* Brake Shoe 65-5780
* V-Belt 65-5740
* V-Belt 66-0210

 

[redd_planet]

Completed my repairs today. I started putting it all back together last Sunday and minutes into the work found the pulley (P/N 62-7560) had one of the "studs" missing so that stopped me. Ordered a new one from ebay. I attached a photo of all the parts I replaced. No strange noises and the blade stops in an instant with the new brake shoe. Hopefully good for another 6-8 years. All that remains is to sharpen the blade, change the oil, and start mowing.

 

[Five Points]

Thanks for the update, glad you got her going for the season. :2th: