User Tag List

Reply
 
Thread Tools Rate Thread Display Modes
Old 05-07-2021, 02:20 PM #1
sundance21 sundance21 is offline
Member
 
Join Date: Feb 2021
Location: USA
Posts: 31
sundance21 is on a distinguished road
sundance21 sundance21 is offline
Member
 
Join Date: Feb 2021
Location: USA
Posts: 31
sundance21 is on a distinguished road
Driveshaft bump when stopping (slip yoke)

I thought I would share my experience when dealing with the bump from behind on stopping from the slip yoke.

Like most, I started with greasing. That didn't work.

I replaced all the U-Joints, that didn't work but I will say the GMB U-Joints from rock auto worked very very well. They fit good and they are very smooth.

I also cleaned the yoke completely multiple times. That worked for a short amount of time.

Then I realized what is going on. Here is my opinion. Once you get some much grease in the yoke, it creates an issue where the splines are filled completely with grease to the point that it creates a bubble/vacuum lock on the yoke. Then once the yoke extends out so far, it will not collapse easily because of the air/grease in yoke. It doesn't take much grease to cause this issue at all. This is what causes the bump. The yoke extends and then tries to collapses as the suspension flexes when stopping. The air just can't escape easily.

What I did was take the grease fitting out. Collapse the yoke. Put the grease fitting back in. Then I could use a pry bar to extend yoke to bolt it down. This creates a vacuum on the yoke that easily collapse as the suspension flexes. No more bump. Hope this makes sense. Just thought I would share.

Last edited by sundance21; 05-07-2021 at 02:23 PM.
sundance21 is offline   Reply With QuoteReply With Quote
Old 05-07-2021, 11:38 PM #2
blkexp98 blkexp98 is offline
Member
 
Join Date: Oct 2006
Location: Phoenix, AZ
Age: 42
Posts: 272
blkexp98 is on a distinguished road
blkexp98 blkexp98 is offline
Member
 
Join Date: Oct 2006
Location: Phoenix, AZ
Age: 42
Posts: 272
blkexp98 is on a distinguished road
Humm interesting find. Wonder how long it will take to lose the vacuum you were talking about? Has anyone seen the differences of the Lexus shafts that supposedly fixed the issue?

Sent from my SM-G975U using Tapatalk
__________________
2007 Limited 4Runner
4x4 V8
blkexp98 is offline   Reply With QuoteReply With Quote
Old 05-08-2021, 11:15 AM #3
dahveeed dahveeed is offline
Member
 
Join Date: Jan 2019
Posts: 89
dahveeed will become famous soon enough
dahveeed dahveeed is offline
Member
 
Join Date: Jan 2019
Posts: 89
dahveeed will become famous soon enough
There’s a service bulletin on this. If you have the extra money for this, there’s an updated drive shaft available to resolve this issue.


Sent from my iPhone using Tapatalk
dahveeed is offline   Reply With QuoteReply With Quote
Old 05-08-2021, 01:48 PM #4
sundance21 sundance21 is offline
Member
 
Join Date: Feb 2021
Location: USA
Posts: 31
sundance21 is on a distinguished road
sundance21 sundance21 is offline
Member
 
Join Date: Feb 2021
Location: USA
Posts: 31
sundance21 is on a distinguished road
Quote:
Originally Posted by blkexp98 View Post
Humm interesting find. Wonder how long it will take to lose the vacuum you were talking about? Has anyone seen the differences of the Lexus shafts that supposedly fixed the issue?

Sent from my SM-G975U using Tapatalk
I believe it will be fine. The only concern is if you take a big bump or over extending the suspension and it breaks the vacuum. So far, that hasn't happened. I had rear end off the ground when I did it.
sundance21 is offline   Reply With QuoteReply With Quote
Old 05-08-2021, 01:52 PM #5
sundance21 sundance21 is offline
Member
 
Join Date: Feb 2021
Location: USA
Posts: 31
sundance21 is on a distinguished road
sundance21 sundance21 is offline
Member
 
Join Date: Feb 2021
Location: USA
Posts: 31
sundance21 is on a distinguished road
Quote:
Originally Posted by dahveeed View Post
There’s a service bulletin on this. If you have the extra money for this, there’s an updated drive shaft available to resolve this issue.


Sent from my iPhone using Tapatalk
Rock auto has a rear SKP brand driveshift with new U joints and flanges for $180. It is different design than the OEM. That is probably what I'll do if this doesn't work for very long.
sundance21 is offline   Reply With QuoteReply With Quote
Old 05-09-2021, 12:05 AM #6
venomj venomj is offline
Junior Member
 
Join Date: Jan 2015
Location: Bay area
Posts: 20
venomj is on a distinguished road
venomj venomj is offline
Junior Member
 
Join Date: Jan 2015
Location: Bay area
Posts: 20
venomj is on a distinguished road
First time I greased my 08 to solve this problem, I put in so much grease, like more than 10 pumps. It didn't make things worse. It actually solved the bump issue for a long while.
Funny thing was a few weeks later when I did something else under the car, I found the grease spilled everywhere around the shaft. I guess my car can discharge extra grease by itself ...
venomj is offline   Reply With QuoteReply With Quote
Old 05-09-2021, 12:35 PM #7
sundance21 sundance21 is offline
Member
 
Join Date: Feb 2021
Location: USA
Posts: 31
sundance21 is on a distinguished road
sundance21 sundance21 is offline
Member
 
Join Date: Feb 2021
Location: USA
Posts: 31
sundance21 is on a distinguished road
Quote:
Originally Posted by venomj View Post
First time I greased my 08 to solve this problem, I put in so much grease, like more than 10 pumps. It didn't make things worse. It actually solved the bump issue for a long while.
Funny thing was a few weeks later when I did something else under the car, I found the grease spilled everywhere around the shaft. I guess my car can discharge extra grease by itself ...
It probably got past the seal. To me, the mechanism should be vented.
sundance21 is offline   Reply With QuoteReply With Quote
Old 05-09-2021, 05:38 PM #8
Hunter61 Hunter61 is offline
Member
 
Join Date: Oct 2017
Location: Kenosha, Wisconsin
Age: 62
Posts: 145
Real Name: Steven
Hunter61 will become famous soon enough
Hunter61 Hunter61 is offline
Member
 
Join Date: Oct 2017
Location: Kenosha, Wisconsin
Age: 62
Posts: 145
Real Name: Steven
Hunter61 will become famous soon enough
I grease that slip joint until I see the yoke start to extend.
Then, remove the grease fitting & drive up & down the driveway a couple times to squeeze out the excess grease. Replace grease fitting and done.
While doing this, tie a couple rags around the shaft where the hole for the grease fitting goes to avoid leaving blobs of grease all over the driveway.
Hunter61 is offline   Reply With QuoteReply With Quote
Old 05-09-2021, 08:01 PM #9
Keros Keros is offline
Member
 
Join Date: Dec 2008
Location: Burnaby, BC
Age: 38
Posts: 408
Keros has a spectacular aura about Keros has a spectacular aura about
Keros Keros is offline
Member
 
Join Date: Dec 2008
Location: Burnaby, BC
Age: 38
Posts: 408
Keros has a spectacular aura about Keros has a spectacular aura about
I raised the truck to max height on the RAS system, back in ~2012 when I got the truck, pumped the driveshaft full of grease until it extended, then lowered the truck to minimum height to push the grease into the splines.

Then I undid the grease nipple, all the pressurized grease came flying out. Be sure not to lose the grease nipple in the chaos.

Get on the back of the truck and bounce it up and down a bunch.

Put grease nipple back on, while still at minimum height. Then it was fine for 9 years until I wore out the joint... replaced the assembly last month.

If the truck doesn't have RAS, then any method discussed above is great too.

Thanks for bringing this up, hopefully others enjoy driveshaft-clunk-free driving
__________________
2005 V8 Limited
Bilstein 6112/5160, ADDCO bars. 18x9 Beast with 285/60R18 BFGs
IPT valve body, DT shorty headers, Dirty Deeds BAMF exhaust
Keros is offline   Reply With QuoteReply With Quote
Old 05-09-2021, 11:06 PM #10
Pilotmatt's Avatar
Pilotmatt Pilotmatt is offline
Member
 
Join Date: May 2010
Location: Osprey, FL
Posts: 150
Pilotmatt is on a distinguished road
Pilotmatt Pilotmatt is offline
Member
Pilotmatt's Avatar
 
Join Date: May 2010
Location: Osprey, FL
Posts: 150
Pilotmatt is on a distinguished road
My 03 did that.

I forget but there are 5? Zirc fittings to grease. The first time I did it the truck was 7 years old and took 7-10 pumps per fitting. It helped a lot, but still had it a bit. There are posts here on all the zirc locations.
__________________
2017 SR5 4WD Premium
2003 SR5 4WD V8 (2010-2017)
Pilotmatt is offline   Reply With QuoteReply With Quote
Reply

Tags
bump , creates , grease , work , yoke

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
Rear Driveshaft Slip Yoke Request mtbtim 3rd gen T4Rs 4 11-23-2018 10:45 AM
Missing slip yoke cap / plug on rear driveshaft yotadawgjr 3rd gen T4Rs 9 03-22-2016 07:12 PM
Lubed driveshaft, slip yoke question aawolf 3rd gen T4Rs 11 07-14-2015 09:45 AM
slip yoke/driveshaft, interchangeable? SDHNTR Classic T4Rs 4 10-13-2011 07:41 PM
Slip yoke won't take any grease Execute_Method 3rd gen T4Rs 2 02-19-2011 05:44 PM

Powered by vBadvanced CMPS v3.2.2

All times are GMT -4. The time now is 09:42 PM.

Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2024, vBulletin Solutions Inc.
Search Engine Optimisation provided by DragonByte SEO (Pro) - vBulletin Mods & Addons Copyright © 2024 DragonByte Technologies Ltd.
Feedback Buttons provided by Advanced Post Thanks / Like (Lite) - vBulletin Mods & Addons Copyright © 2024 DragonByte Technologies Ltd.
User Alert System provided by Advanced User Tagging (Lite) - vBulletin Mods & Addons Copyright © 2024 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