User Tag List

Reply
 
Thread Tools Rate Thread Display Modes
Old 03-20-2020, 05:58 AM #1
Ghostrider Ghostrider is online now
Member
 
Join Date: Mar 2006
Location: Huntsville, Al
Posts: 620
Ghostrider is on a distinguished road
Ghostrider Ghostrider is online now
Member
 
Join Date: Mar 2006
Location: Huntsville, Al
Posts: 620
Ghostrider is on a distinguished road
Differential pinion bearing?

trying to eliminate possibilities. I have a consistent sound from the rear of the truck. Almost sure it is new tires but want to eliminate other things. If the sound stays they same while coasting in neutral - does that eliminate the pinion bearing in differential or does the drive shaft still rotate? Will check wheel bearing by pulling on tires over weekend. Sound showed up with new tires but the wild card was the old tires were so noisy it could have been there all along.
Have 190K miles
Ghostrider is online now   Reply With QuoteReply With Quote
Old 03-20-2020, 07:54 AM #2
dogtail's Avatar
dogtail dogtail is offline
Member
 
Join Date: May 2015
Location: Massachusetts
Posts: 614
Real Name: Keith
dogtail has a spectacular aura about dogtail has a spectacular aura about
dogtail dogtail is offline
Member
dogtail's Avatar
 
Join Date: May 2015
Location: Massachusetts
Posts: 614
Real Name: Keith
dogtail has a spectacular aura about dogtail has a spectacular aura about
When my pinion bearing went, I could move pinion up and down slightly. Put it in neutral when you check pinion movement. Also jack the rear, chock other wheels. Start it up and bring speed up so the drivetrain is spinning but tires not hitting ground. Actually you just need to jack the drive tire, the other one can stay on ground. Good way to pinpoint drivetrain noise.
__________________
*1999 3.4L, 4wd/5spd, swapped motor and trans, heavy use DD, seasonal rust proofing using WD-40 only
*1998 3.4L, 2wd/auto, rust free from south, slated for 4wd/5spd swap from my 2000 parts rig
*2000 3.4L, 4wd/5spd, parts rig, picking the carcass
dogtail is offline   Reply With QuoteReply With Quote
Old 03-20-2020, 12:22 PM #3
Dieselchessy Dieselchessy is offline
Member
 
Join Date: Dec 2019
Location: SW Washington
Posts: 415
Dieselchessy will become famous soon enough Dieselchessy will become famous soon enough
Dieselchessy Dieselchessy is offline
Member
 
Join Date: Dec 2019
Location: SW Washington
Posts: 415
Dieselchessy will become famous soon enough Dieselchessy will become famous soon enough
For some reason I cringe every time someone suggests a Ferris Bueler. Not that I have personal experience.

Pinion noise tends to change with changes from under power, coasting in neutral, and engine breaking.

Wheel bearing noise may or may not be consistent through the 3 above mentioned loading scenarios. It may change while cornering, or braking. It tends to be one side or the other.

You could also have failing u-joint(s). You can hand test and/or pump in grease and see if that provides temporary relief.

If your tires are spinning, so should your driveline for the rear.
__________________
Owned 82, 83, 87 pickup, 98, 99 SR5 4runner
Currently own a 98 SR5, 5spd, 4x4, e-locker, no sunroof.
Dieselchessy is offline   Reply With QuoteReply With Quote
Old 03-20-2020, 02:24 PM #4
sleepydad's Avatar
sleepydad sleepydad is online now
Member
 
Join Date: Jun 2017
Location: Minnesota
Posts: 967
Real Name: Andy ಠ_ಠ
sleepydad is just really nice sleepydad is just really nice sleepydad is just really nice sleepydad is just really nice
sleepydad sleepydad is online now
Member
sleepydad's Avatar
 
Join Date: Jun 2017
Location: Minnesota
Posts: 967
Real Name: Andy ಠ_ಠ
sleepydad is just really nice sleepydad is just really nice sleepydad is just really nice sleepydad is just really nice
Quote:
Originally Posted by Ghostrider View Post
trying to eliminate possibilities. I have a consistent sound from the rear of the truck. Almost sure it is new tires but want to eliminate other things. If the sound stays they same while coasting in neutral - does that eliminate the pinion bearing in differential or does the drive shaft still rotate? Will check wheel bearing by pulling on tires over weekend. Sound showed up with new tires but the wild card was the old tires were so noisy it could have been there all along.
Have 190K miles
these types of things are hard to find sometimes.

last fall I replaced the bearings in my 3rd member, front/rear pinion and carrier both sides. reset the backlash and got the pattern acceptable. 230K on that 3rd member.

after I did this and nothing exploded and or melted... the new bearings made my 3rd member much quieter. I was surprised how much quieter. the old bearings and races were not really in terrible condition but they were scored a bit and it was making them very noisy.

if it's constant noise that does not change much except with speed, it's probably just older bearing noise.

I have had a pinion go bad and it's super noticeable, I have had wheel bearings go bad also very obvious. if it's subtle I would suggest maybe a fluid change in the rear to see if it quiets it down a bit, if it does? prob just older bearings and maybe some sand/dirt/water got in there at one point. it happens.
sleepydad is online now   Reply With QuoteReply With Quote
Reply

Tags
bearing , differential , eliminate , sound , tires

Thread Tools
Display Modes Rate This Thread
Rate This Thread:

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 On

Forum Jump

Similar Threads
Thread Thread Starter Forum Replies Last Post
Inner cv shaft bearing,,differential bearing replacement razerface 4th Gen T4Rs 5 03-25-2018 09:27 PM
Pulling Front Pinion Bearing From Pinion Shaft? Buckaroo 3rd gen T4Rs 4 01-04-2015 09:05 PM
differential problem - pinion shaft input bearing JPLrunner 4th Gen T4Rs 5 01-03-2014 08:13 PM
pinion carrier bearing/pinion input bearing Fin Australia 0 09-28-2013 01:43 AM
Pinion Bearing Deranged Classic T4Rs 4 02-11-2011 11:59 PM

Powered by vBadvanced CMPS v3.2.2

All times are GMT -4. The time now is 08:33 AM.

Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2020, vBulletin Solutions Inc.
Search Engine Optimisation provided by DragonByte SEO (Pro) - vBulletin Mods & Addons Copyright © 2020 DragonByte Technologies Ltd.
Feedback Buttons provided by Advanced Post Thanks / Like (Lite) - vBulletin Mods & Addons Copyright © 2020 DragonByte Technologies Ltd.
User Alert System provided by Advanced User Tagging (Lite) - vBulletin Mods & Addons Copyright © 2020 DragonByte Technologies Ltd.
***This site is an unofficial Toyota site, and is not officially endorsed, supported, authorized by or affiliated with Toyota. All company, product, or service names references in this web site are used for identification purposes only and may be trademarks of their respective owners. The Toyota name, marks, designs and logos, as well as Toyota model names, are registered trademarks of Toyota Motor Corporation***Ad Management plugin by RedTyger
 
Copyright © 2020