whc160 74 #1 Posted December 9, 2012 Well I went to TSC & got some #40 roller chain to replace the chain on the tall chute blower I picked up a few months ago. Model # 79360 After flipping the scraper bar over & fixing some dents in the auger I removed the old chain. Then I found that the bearing was out of the top idler sprocket & the lower one that adjusts the chain tension is almost locked up. Now I have questions. Where can I get these sprockets? Do I have to go to Toro or Partstree? Also there is a collar that I found was loose on the shaft. It has one set screw. But I noticed that there is a hole that was not drilled all the way or tapped 90 deg from the screw that is there. Should there be a second screw at 90 deg? Share this post Link to post Share on other sites
smoreau 658 #2 Posted December 9, 2012 (edited) You can get a idler sprocket from TSC it will have one more tooth then the original, but will work fine. The set screw is all there is for that unit Edited December 9, 2012 by smoreau Share this post Link to post Share on other sites
whc160 74 #3 Posted December 9, 2012 Thanks Scott ! I will have to make another trip to TSC. Then I will be ready for the snow. That is if we get any this year, not much last year here. Share this post Link to post Share on other sites
1054josh 25 #4 Posted December 9, 2012 The hole is used for tightening the set collar down on the shaft so it doesn't move in the bearing. Share this post Link to post Share on other sites
can whlvr 993 #5 Posted December 9, 2012 they can also be purchased at a bearing retailer,i was able to get axact idlers,up here tsc is a joke,they dont even stock stuff like that,and they dont have controll of what they get to sell Share this post Link to post Share on other sites
smoreau 658 #6 Posted December 9, 2012 they can also be purchased at a bearing retailer,i was able to get axact idlers,up here tsc is a joke,they dont even stock stuff like that,and they dont have controll of what they get to sell I couldn't agree more, Share this post Link to post Share on other sites
Don1977 604 #7 Posted December 9, 2012 The TSC's around here used to sell weldable pulleys, sprockets and hubs made in China but well built. Then they changed to junk spot weld up pulleys out of three pieces. Two of the local store don't even have the junk pulleys, did the same with tractor paint. I guess they are trying to go out of business. They have lost most of mine, about the only that I buy there is water filters. I guess I had better stock up before they quit selling them. They must have hired a bunch of bean counters just out of collage that have never seen a tractor, much less worked on one. Share this post Link to post Share on other sites
Horse Fanatic 49 #8 Posted December 10, 2012 http://www.cooksaw.com/sprockets/idler-sprockets/ I got some from these guys, correct size, very happy with them. Share this post Link to post Share on other sites
Wyattrrp 59 #9 Posted December 10, 2012 That #40 17 tooth idler sprocket at TSC is $20 and I had to make 4 trips there over 2 weeks to get 2 as they were always out of it. I found at thebigbearingstore.com they are $8.25 and US postal shipping for 2 sprockets is about $7 so for $24 you can have them delivered to the house. http://www.thebigbearingstore.com/servlet/the-1543/17-Tooth-Steel-Idler/Detail Mine are the 1/2 inch bore too. I rcently replaced that shaft bearing and collar on a 79360 blower I recently picked up and posted info here on RS at Bought the bearing at the same online site listed above and it was shipped next day arriving in 3 days for $5 shipping USPO. Wyatt 1 Share this post Link to post Share on other sites
Wyattrrp 59 #10 Posted December 10, 2012 WHC160, Also the old and new bearing collar each had a single set screw with another hole drilled 80% of the depth with no threads too. Share this post Link to post Share on other sites
whc160 74 #11 Posted December 10, 2012 Thanks Guys ! The dealer here in town is also a Case dealer & sells farm implements. So I will see if they have a non one. Also have a place in town that makes machinery for the lumber mills. Alot of there stuff is chain driven so I will have to check with them also. The more I think about it all of the Amish around here use chain driven machinery. So maybe I can find some good sprockets at a good price. 1 Share this post Link to post Share on other sites
whc160 74 #12 Posted December 21, 2012 Well I could not find the sprockets locally for the price they wanted at The Big Bearing Store. So I ordered them last week & got them Tuesday. Got the two sprockets for $8.25 each & the total with shipping came to $21.50. Now I can't wait for Saturday to get here to get the blower up & running. Thanks for the link Wyattrrp ! Share this post Link to post Share on other sites
gwest_ca-(File Mod) 11,029 #13 Posted December 21, 2012 If you look at the inside of the locking collar you will see an oval bore on one side. That side matches an oval on the bearing's inner race. Coat the shaft with Never-seize and install the parts with one oval over the other. Take a hammer and punch and tap on the plain hole in the collar in the direction the shaft normally rotates until it is tight. This locks the inner race to the shaft so the shaft can't rotate in the bearing. Garry 1 Share this post Link to post Share on other sites
SousaKerry 501 #14 Posted December 21, 2012 :text-yeahthat: It's a cam lock bearing TSC is probably eliminating real farm parts so they can make more room for Clothing and horse crap... There must be a huge markup selling western wear and equine goods to yuppies.. If only Quality Farm and Fleet was still around 1 Share this post Link to post Share on other sites
whc160 74 #15 Posted December 22, 2012 Well I got my blower put back together today. Here is a pic of the old parts on the right & the new ones on the left. Started putting the idler sprockets on & found that the new ones were not as wide as the old ones. So I had to shim them out with washers to line up with the sprocket on the auger. The chain lined up good with the sprockets so I put everthing else back together. Sounds alot better with the new sprockets, chain, & everything lubed up. Share this post Link to post Share on other sites