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 05-31-2018, 09:22 PM   #1
RMcG
 
Drives: 2008 Yaris Base Hatchback
Join Date: Nov 2010
Location: Pacific NW
Posts: 247
Determining proper tension for new serpentine belt

I recently installed a new serpentine belt. I used a Bando belt from Rock Auto that is supposed to be as good as an OEM belt. Everything went fine, but the belt started squeeling more and more shortly after installation, so I tightened the belt using a crowbar for leverage.

Since tightening the squeeling has stopped, but I am worried that the belt is too tight. People on the forum here have cautioned that if the belt is too tight, it could adversely affect bearings in the parts contacting the belt.

Is there a good way to objectively determine proper belt tension?

Thanks,

R.
RMcG is offline   Reply With Quote
Old 05-31-2018, 09:36 PM   #2
CB900F2
 
Drives: 08 Sedan
Join Date: Oct 2008
Location: Toronto
Posts: 301
See the attached TSB with tension spec....
Attached Files
File Type: pdf Belt Tension - 2015.pdf (309.4 KB, 161 views)
CB900F2 is offline   Reply With Quote
Old 06-01-2018, 07:16 PM   #3
RMcG
 
Drives: 2008 Yaris Base Hatchback
Join Date: Nov 2010
Location: Pacific NW
Posts: 247
Thanks CB,

I appreciate getting the specs. The belt tension specs appear to require a belt tension tool, the Denso BTG-20 Belt Tension Gauge, correct?

I do not, of course, have such a gauge. I have found a couple of interesting videos the give a trick of twisting the belt 90 degrees to determine appropriate tension. Do you or anybody else have any comments?

https://www.youtube.com/watch?v=FMiB3CnZpRc

https://www.youtube.com/watch?v=-f1eE9U-khU

Thanks,

R.
RMcG is offline   Reply With Quote
Old 06-01-2018, 08:04 PM   #4
castles
 
Drives: 2008 Yaris
Join Date: Feb 2018
Location: Ohio
Posts: 24
you could see if this guys squeaky belt solution works for you...

https://www.youtube.com/watch?v=HRrVMtyIqIY
castles is offline   Reply With Quote
Old 06-01-2018, 08:21 PM   #5
RMcG
 
Drives: 2008 Yaris Base Hatchback
Join Date: Nov 2010
Location: Pacific NW
Posts: 247
Quote:
Originally Posted by castles View Post
you could see if this guys squeaky belt solution works for you...

https://www.youtube.com/watch?v=HRrVMtyIqIY
Thanks, in fact I already saw this video and the solution of slowly turning the key worked for a while, but the squeeling got worse.

R.
RMcG is offline   Reply With Quote
Old 06-01-2018, 10:19 PM   #6
B.B._07
 
Drives: 07 5dr
Join Date: Nov 2015
Location: YYC
Posts: 197
Quote:
Originally Posted by castles View Post
you could see if this guys squeaky belt solution works for you...

https://www.youtube.com/watch?v=HRrVMtyIqIY
That video is useless, guy just offers up a theory when the real solution is obvious (the belt needs to be tighten).

I wouldn't be overly concerned with the belt being to tight. I've changed the serpentine belt on a Toyota 1.8L 1ZZ engine which is the big sister 1.5L 1NZ in the Yaris. The 1ZZ has an auto tensioner and it puts a lot of tension of the belt. If you're super concerned about the tension being too high you can loosen the tension to the point that it starts to squeak and mark that point on the tension adjuster with a paint pen/whiteout/nail polish/scratch awl/etc. Then tighten it a little bit, mark the point, and test it and repeat until the squeaking goes away. I used that method and my belt is nice and quiet.
B.B._07 is offline   Reply With Quote
Old 06-01-2018, 11:07 PM   #7
scylla
 
Drives: 2015 Yaris L
Join Date: Jun 2017
Location: Illinois
Posts: 94
Yep, best way to do it right there B.B.
A Yaris belt is so easy to tighten that it only takes a few tries to get it right if you have an ornery belt.
scylla is offline   Reply With Quote
Old 06-02-2018, 08:35 PM   #8
Billiam
 
Drives: '10 White Yaris 4D LB
Join Date: Mar 2010
Location: USA
Posts: 554
We bought a 2010 4 door hatch with 126k on the clock back in January. The belt was squeaking quite a bit. So I replaced it with a new Dayco. It was no better. No matter how much I cleaned all the pullies and the belt, no matter how much I adjusted the tension, it still squealed some.

So I went with a Gates belt. Dead silent. Zero noise. The only adjustment I've made was when I put it on.
Attached Images
File Type: jpg rsz_120180602_102030.jpg (67.5 KB, 222 views)
__________________
If you want to enjoy your car, stay off of the internet.
Billiam is offline   Reply With Quote
Old 06-06-2018, 12:31 AM   #9
RMcG
 
Drives: 2008 Yaris Base Hatchback
Join Date: Nov 2010
Location: Pacific NW
Posts: 247
Quote:
Originally Posted by RMcG View Post
Thanks CB,

I appreciate getting the specs. The belt tension specs appear to require a belt tension tool, the Denso BTG-20 Belt Tension Gauge, correct?

I do not, of course, have such a gauge. I have found a couple of interesting videos the give a trick of twisting the belt 90 degrees to determine appropriate tension. Do you or anybody else have any comments?

https://www.youtube.com/watch?v=FMiB3CnZpRc

https://www.youtube.com/watch?v=-f1eE9U-khU

Thanks,

R.

Thanks to everybody for their comments. I checked the belt tension using the 90 degree twist method advocated in the youtube videos above and the belt tension was fine. So I have just left the tension as is and I have no noise at all. Problem seems solved, at least for now.

Thanks,

R.
RMcG is offline   Reply With Quote
Old 12-30-2021, 05:52 AM   #10
kulfonik123
 
Drives: Yaris 1,4 D4D 2011
Join Date: Dec 2021
Location: Lubuskie
Posts: 6
I need help. I am repairing toyota yaris 1,4 D4D 2011 y. Its stop and cannot start it .
On my eye it is bearing from generator.
I need remove the belt to get to generator(and replace the bearing). cannot do it because i have no experience with this type of tensioner. if someone who has experience with this type of tensioner could write few words I will be very apreciate it.

I am pensioner wchich repairing cars of my family(sons and others)
kulfonik123 is offline   Reply With Quote
Old 12-30-2021, 05:53 AM   #11
kulfonik123
 
Drives: Yaris 1,4 D4D 2011
Join Date: Dec 2021
Location: Lubuskie
Posts: 6
kulfonik123 is offline   Reply With Quote
Old 12-30-2021, 06:01 AM   #12
kulfonik123
 
Drives: Yaris 1,4 D4D 2011
Join Date: Dec 2021
Location: Lubuskie
Posts: 6
Tensioner type which is in my son toyota i ander this link.
kulfonik123 is offline   Reply With Quote
Reply

Tags
belt, determining, proper, tension

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
Which serpentine belt? courtartanis DIY / Maintenance / Service 0 11-30-2017 10:32 AM
Yaris serpentine belt!!! Ramon1691 DIY / Maintenance / Service 9 04-11-2016 11:00 AM
Serpentine Belt Replacement - Is it possible to get it too tight? keith204 DIY / Maintenance / Service 5 05-25-2015 04:52 AM
Squeal from Engine after replacing Water Pump and Serpentine Belt vidfan DIY / Maintenance / Service 7 06-24-2014 10:41 AM
Lost Serpentine Belt NickNickNick DIY / Maintenance / Service 33 07-31-2011 12:28 PM


All times are GMT -4. The time now is 11:48 AM.




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