Toyota Yaris Forums - Ultimate Yaris Enthusiast Site
 

 


 
Go Back   Toyota Yaris Forums - Ultimate Yaris Enthusiast Site > Technical Forums > DIY / Maintenance / Service
  The Tire Rack

Reply
 
Thread Tools Display Modes
Old 05-19-2015, 12:25 PM   #1
keith204
 
Drives: 2007 Yaris LB
Join Date: Aug 2009
Location: Bolivar
Posts: 13
Serpentine Belt Replacement - Is it possible to get it too tight?

I'm about to replace the serpentine belt on my 2007 Yaris. From reading around on here, I see that if it squeals, it's too loose. However, would a belt that's too tight put bad pressure on the pulleys?

Since nobody seems to be mentioning a too-tight belt, I'm thinking that it's probably difficult to get it too tight.

Thoughts?
__________________
Keith, 2007 Yaris Liftback
YouTube: Keith's Test Garage | http://www.KeithsTestGarage.com
keith204 is offline   Reply With Quote
Old 05-19-2015, 12:28 PM   #2
CrankyOldMan
2ZR swap. DO IT! Ask how!
 
CrankyOldMan's Avatar
 
Drives: 09 Meteoric Metallic HB
Join Date: Feb 2011
Location: West Michigan
Posts: 2,333
Yes. Over-tightening the belt can/will cause premature failure of one or more bearings, usually the water pump or alternator. Welcome to the World!
CrankyOldMan is offline   Reply With Quote
Old 05-19-2015, 01:34 PM   #3
bail_w
 
Drives: 2007 Toyota Yaris LB
Join Date: Mar 2007
Location: Bay Area, CA
Posts: 76
The rule of thumb with serpentine belts is to try to twist the belt 90 degrees in the middle of the longest span - it should twist 90 degrees but no more.
bail_w is offline   Reply With Quote
Old 05-19-2015, 02:18 PM   #4
bronsin
 
bronsin's Avatar
 
Drives: 2009 Base Hatch 2 Dr Auto
Join Date: Dec 2008
Location: nj
Posts: 4,790
Yes thats what Ive heard the 90 degree twist thing.

Which makes no sense to me because no matter how tight the belt is you can twist it 90 degrees!

I guess what I would do is tighten it so it squeeks. Then a little more. More. More. Until it stops. Then back it off a hair.

What could it hurt if it squeeks?
__________________
Synthetic Oil: Its All In Your Head
bronsin is offline   Reply With Quote
Old 05-19-2015, 02:47 PM   #5
tmontague
 
tmontague's Avatar
 
Drives: '08 2zr swapped Vios M/T
Join Date: Oct 2012
Location: Caledonia Ont.
Posts: 2,938
I tighten it so that it is very firm when pushed down in the middle of the longest span. I allow it to move a cm or so either way w/ quite a bit of force pushing on it.
tmontague is offline   Reply With Quote
Old 05-25-2015, 04:52 AM   #6
eseibel67
 
eseibel67's Avatar
 
Drives: 2007 Yaris
Join Date: Sep 2011
Location: Canada
Posts: 22
You can make it good and tight without damaging bearings. When it spins, the belt is looser than when it's standing still.
eseibel67 is offline   Reply With Quote
Reply

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump

Similar Threads
Thread Thread Starter Forum Replies Last Post
Serpentine belt squeals on cold start up after replacement. YarYarBinks DIY / Maintenance / Service 16 03-03-2017 10:04 AM
Serpentine belt replacement. Phaeton DIY / Maintenance / Service 4 01-10-2016 07:58 AM
Serpentine belt replacement - dumb question JSCIII DIY / Maintenance / Service 1 04-28-2015 05:55 PM
Drive Belt Replacement wagon DIY / Maintenance / Service 2 12-28-2014 11:24 AM
drive belt replacement and/or water pump replacement sociolog DIY / Maintenance / Service 9 02-10-2014 12:33 PM


All times are GMT -4. The time now is 07:32 AM.




YarisWorld
Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2024, vBulletin Solutions Inc.