Return to the Tool Shed Forum | Post a Follow-Up

 o
Idler pulley problems

Posted by strelnikov NE IL (My Page) on
Sun, Mar 20, 11 at 21:45

I have an old Roto-Hoe 990 tiller that has an idler pulley with a brass bushing to tension the main drive belt. A couple years ago it was overheating so I replaced the brass bushing. Now it is overheating again. It starts to smoke after using it a while so I shut it off and let it cool down before I continue tilling. Anybody know what I can do to prevent this overheating issue?


Follow-Up Postings:

 o
RE: Idler pulley problems

Please post a Pic or link to a Pic. I hate to think there is no zerk fitting to grease the bushing or one c/n be added. OR! Should you be adding a lighter wt oil from an oil pump can?? loger


 o
RE: Idler pulley problems

Sorry no pics. There is no zerk fitting, I suppose I could add one, may have to somehow.

If I can't make the bushing idler pulley work I may have to make some kind of fitting that can mount an idler pulley with a bearing instead of a bushing. Not exactly easy for me but necessity is the mother of invention...


 o
RE: Idler pulley problems

W/o seeing your set-up and need, I'm guessing adding a zerk s/n be a big challenge if you have a shoulder to add it on-to. I would angle it toward the center (if angling is needed).

I could see you possibly adding an automotive pulley with a bearing easier than adding a bearing. Try taking the pulley to an auto store and ask if they can match it with a pulley with a bearing. Good Luck! loger

PS. I probably have what you need in my "Years Of Stuff". LOL!!


 o
RE: Idler pulley problems

Thanks loger I will measure the shaft size and pulley diameter. I remember when I replaced the bushing that I found an idler pulley with a bearing with the same pulley diameter but not with the same shaft size.


 o
RE: Idler pulley problems

strelnikov,

1. I feel adding a zerk (if possible) and greasing as needed might be you best 1st reasonable option.

2. Maybe roller bearings could be added to your present pulley with minor machining if needed.

3. W/O sealed bearings grease will be needed which makes me feel a source is there on quality equipment.

4. Pic Are Worth A Thousand Words. Hopefully! Someone will provide pics and a source of grease or not. Cross Your Fingers! loger


 o
RE: Idler pulley problems

Stre: As loger has advised roller bearing would be the best form of resolve but a zerk fitting also would provide an easy solution to your lubrication needs should there be sufficient metal for this modification. Other wise periodic greasing with moly grease should be adequate for most babbitt bearing applications . This was the norm until auto oilers (stuffing boxs) became the norm and then needle and roller bearing . Let us know how you make out . Loger has given sound advice .


 o
RE: Idler pulley problems

There may have been some metal transfer when the first
bushing overheated. If you didn't clean up the shaft,
then the new bushing is now ruined.


 o
RE: Idler pulley problems

Thanks lbpod I didn't realize that. That is probably what happened because the new bushing started overheating not long after I installed it. Bummer. I remember my dad using this tiller when I was a kid and I never remember him having problems with the idler pulley overheating.


 o
RE: Idler pulley problems

In which direction would the metal transfer. Brass to steel or steel to brass? Either way will a good polishing remove the metal or is wear an issue already? What type of grease or oil did you use? loger


 o Post a Follow-Up

Please Note: Only registered members are able to post messages to this forum.

    If you are a member, please log in.

    If you aren't yet a member, join now!


Return to the Tool Shed Forum

Information about Posting

  • You must be logged in to post a message. Once you are logged in, a posting window will appear at the bottom of the messages. If you are not a member, please register for an account.
  • Posting is a two-step process. Once you have composed your message, you will be taken to the preview page. You will then have a chance to review your post, make changes and upload photos.
  • After posting your message, you may need to refresh the forum page in order to see it.
  • Before posting copyrighted material, please read about Copyright and Fair Use.
  • We have a strict no-advertising policy!
  • If you would like to practice posting or uploading photos, please visit our Test forum.
  • If you need assistance, please Contact Us and we will be happy to help.


Learn more about in-text links on this page here