My Differential is clicking and screeching

Disclaimer: Links on this page pointing to Amazon, eBay and other sites may include affiliate code. If you click them and make a purchase, we may earn a small commission.

electro

electro

Full Access Member
Joined
Oct 30, 2010
Posts
619
Reaction score
5
Location
Kitchener, ON, CAN
Hello everyone, looking for help with Pinion Bearing removal and install.
Has anyone rebuilt there G80? Looking for some insight!

The diff is screeching periodically when backing up. Fluid level OK. The most unerving sound it is making would be the clicking or ticking. Happening only when accelerating. (bearing failure, broken dislodged rollers?)

I've yet to pull the cover off and actually have a look. Due to its continual and on going "proper" operation it would hint at just a bad bearing. When the squealing starts it sounds as if to originate from the front of the diff housing. Possibly Pinion Bearing/Seal

I'd love to have a rebuild kit ready to go and remove the diff. on a Saturday morning and overhaul it, even if I spent all weekend!! To me it beats replacing it with used or new.

Can anyone reccomend an overhaul manual?
What special tools will I require? Press? Seal drivers? etc.
Recommended rebuild kit?

I assume I need to deal with this issue ASAP as it will lead to major parts if left unattended too long! I want to get this fixed up!

Please leave your .2 cents!!

Thank-you TYF,
Ryan
 
Last edited:
Sasquatch

Sasquatch

Full Access Member
Joined
May 3, 2009
Posts
1,249
Reaction score
389
Location
Orange County N.Y.
Have you ruled out the u-joints? I`ve had bad joints that creaked or made a ticking noise and also had some squealers.

If that`s not the problem i`d just pull the diff cover and take a look and see what you find. Hopefully your locker didn`t break.
 
OP
OP
electro

electro

Full Access Member
Joined
Oct 30, 2010
Posts
619
Reaction score
5
Location
Kitchener, ON, CAN
The locker is still functional. I had it on a lift whole changing tires and engaged the locker multiple times.


Sent from my iPhone using Tapatalk
 
Sasquatch

Sasquatch

Full Access Member
Joined
May 3, 2009
Posts
1,249
Reaction score
389
Location
Orange County N.Y.
Well in that case i`d check the u-joints. I`ve never heard a diff screeching. It`s tough to do that when the parts are covered in gear oil unless of course there`s no oil in there.
 
OP
OP
electro

electro

Full Access Member
Joined
Oct 30, 2010
Posts
619
Reaction score
5
Location
Kitchener, ON, CAN
I might say it "squeals", not screeches.

When it was on the lift I rotated a rear wheel by hand until the G-80 locked. When it locked the rear driveshaft started spinning and the squealing began.





Sent from my iPhone using Tapatalk

---------- Post added at 10:59 PM ---------- Previous post was at 10:57 PM ----------

I also open the differential fill hole and reached in with my little fingers. I think it's 5/8" down. It's dark black/grey!


Sent from my iPhone using Tapatalk
 
Goodinblack

Goodinblack

I Like Tacos
Joined
Oct 27, 2011
Posts
22,295
Reaction score
3,046
Location
Dirty South
electro said:
I might say it "squeals", not screeches.

When it was on the lift I rotated a rear wheel by hand until the G-80 locked. When it locked the rear driveshaft started spinning and the squealing began.





Sent from my iPhone using Tapatalk

---------- Post added at 10:59 PM ---------- Previous post was at 10:57 PM ----------

I also open the differential fill hole and reached in with my little fingers. I think it's 5/8" down. It's dark black/grey!


Sent from my iPhone using Tapatalk
Click to expand...

Looks like someone is having their rear fingered.

Need a rebuild. Dark graphite fluid is bad news.
 
OP
OP
electro

electro

Full Access Member
Joined
Oct 30, 2010
Posts
619
Reaction score
5
Location
Kitchener, ON, CAN
Has anyone here rebuilt their G80 differential? Looking for some insight!

Thanks.
 
Last edited:
livingez_123

livingez_123

Full Access Member
Joined
Feb 18, 2013
Posts
1,799
Reaction score
114
Location
Sandy, OR
You just need the right tools, a good magnetic base for the dial indicator to check the backlash. A press for the bearings, a highly accurate Tq wrench.
 
OP
OP
electro

electro

Full Access Member
Joined
Oct 30, 2010
Posts
619
Reaction score
5
Location
Kitchener, ON, CAN
It may just be the Pinion Bearing.

Considering a press for bearing removal and maybe a hub removal tool?

Not sure how to reinstall Pinion Bearing though! A cup driver set? Not sure.

Starting to think I can remove everything and reinstall in same order as removed. Shims, etc.

---------- Post added at 10:44 PM ---------- Previous post was at 10:37 PM ----------

.2 ?

:boti:
 
Goodinblack

Goodinblack

I Like Tacos
Joined
Oct 27, 2011
Posts
22,295
Reaction score
3,046
Location
Dirty South
electro said:
It may just be the Pinion Bearing.

Considering a press for bearing removal and maybe a hub removal tool?

Not sure how to reinstall Pinion Bearing though! A cup driver set? Not sure.

Starting to think I can remove everything and reinstall in same order as removed. Shims, etc.

---------- Post added at 10:44 PM ---------- Previous post was at 10:37 PM ----------

.2 ?

:boti:
Click to expand...

Heat the inner bearing in a oven.

Put the pinion in a freezer.

Easy peasy

---------- Post added at 11:55 PM ---------- Previous post was at 11:48 PM ----------

Removal is aided by bearing splitters, a press, step plate set, and puller.

---------- Post added at 11:58 PM ---------- Previous post was at 11:55 PM ----------
livingez_123 said:
You just need the right tools, a good magnetic base for the dial indicator to check the backlash. A press for the bearings, a highly accurate Tq wrench.
Click to expand...

A beam torque wrench like KD 2955 will do great for checking rotating torque.

---------- Post added at 12:01 AM ---------- Previous post was Yesterday at 11:58 PM ----------
electro said:
It may just be the Pinion Bearing.

Considering a press for bearing removal and maybe a hub removal tool?

Not sure how to reinstall Pinion Bearing though! A cup driver set? Not sure.

Starting to think I can remove everything and reinstall in same order as removed. Shims, etc.

---------- Post added at 10:44 PM ---------- Previous post was at 10:37 PM ----------

.2 ?

:boti:
Click to expand...

Also to crush the new crush sleeve you will need a pinion yoke holding tool

---------- Post added at 12:07 AM ---------- Previous post was at 12:01 AM ----------

Usually the carrier bearings go bad first and get the fall out into the pinion bearing. Also side axle bearings may be affected as well.
 
OP
OP
electro

electro

Full Access Member
Joined
Oct 30, 2010
Posts
619
Reaction score
5
Location
Kitchener, ON, CAN
goodinblack said:
Heat the inner bearing in a oven.

Put the pinion in a freezer.

Easy peasy

---------- Post added at 11:55 PM ---------- Previous post was at 11:48 PM ----------

Removal is aided by bearing splitters, a press, step plate set, and puller.

---------- Post added at 11:58 PM ---------- Previous post was at 11:55 PM ----------



A beam torque wrench like KD 2955 will do great for checking rotating torque.

---------- Post added at 12:01 AM ---------- Previous post was Yesterday at 11:58 PM ----------



Also to crush the new crush sleeve you will need a pinion yoke holding tool

---------- Post added at 12:07 AM ---------- Previous post was at 12:01 AM ----------

Usually the carrier bearings go bad first and get the fall out into the pinion bearing. Also side axle bearings may be affected as well.
Click to expand...

Okay! Thats a lot for my small mind! This diff is giving me a head ache.

It would appear I need to acquire one bearing splitter and one press for bearing removal.

I can take everything apart now I suppose.

Putting it back is another story.
 
Goodinblack

Goodinblack

I Like Tacos
Joined
Oct 27, 2011
Posts
22,295
Reaction score
3,046
Location
Dirty South
electro said:
Okay! Thats a lot for my small mind! This diff is giving me a head ache.

It would appear I need to acquire one bearing splitter and one press for bearing removal.

I can take everything apart now I suppose.

Putting it back is another story.
Click to expand...

What all tools do you have now?
 
OP
OP
electro

electro

Full Access Member
Joined
Oct 30, 2010
Posts
619
Reaction score
5
Location
Kitchener, ON, CAN
I have a Canadian Tire torque wrench and I also have a Canadian Tire micrometer.

I may to also get pinion nut socket. I wish I had a manual!
 
Goodinblack

Goodinblack

I Like Tacos
Joined
Oct 27, 2011
Posts
22,295
Reaction score
3,046
Location
Dirty South
electro said:
I have a Canadian Tire torque wrench and I also have a Canadian Tire micrometer.

I may to also get pinion nut socket. I wish I had a manual!
Click to expand...

No offense bro....... but you may be in over your head on this.

Get a manual and/or get a differentials book.
 
Goodinblack

Goodinblack

I Like Tacos
Joined
Oct 27, 2011
Posts
22,295
Reaction score
3,046
Location
Dirty South
ezeme7u8.jpg


---------- Post added at 08:25 PM ---------- Previous post was at 08:24 PM ----------

e6enaqe7.jpg


---------- Post added at 08:27 PM ---------- Previous post was at 08:25 PM ----------

3yhy3ydu.jpg


---------- Post added at 08:29 PM ---------- Previous post was at 08:27 PM ----------

3a3epa4e.jpg


---------- Post added at 08:31 PM ---------- Previous post was at 08:29 PM ----------

ere8ubup.jpg
 
OP
OP
electro

electro

Full Access Member
Joined
Oct 30, 2010
Posts
619
Reaction score
5
Location
Kitchener, ON, CAN
Nice, thanks, thats beauty! Now what are precise names?

I have a 3-Jaw Puller in my box now.

Bearing Separator, no problem, I can get that.

Second tool is magnetic base dial indicator, sounds expensive.

Fourth one, yoke holder. No problem, I can that.

5th is a beam type inch-pound torque wrench. Also, sounds expensive.
 
Last edited:
You must log in or register to reply here.

Similar threads

D
Replacing torque converter without a lift and using floor jack/trans jack, what is needed?
Replies
18
Views
1K
West 1
West 1
West 1
Rear 3.42 rebuild odd axle bearing wear
2 3 4
Replies
61
Views
4K
West 1
West 1
snives
Ordering parts for a regear, ring and pinion swap, have you ever done one?
Replies
18
Views
5K
alpha_omega
alpha_omega
D
Is my front strut cartridge bad?
Replies
14
Views
3K
dkad260
D
2015LTZ
2015 Tahoe LTZ - problem diagnosis
Replies
12
Views
8K
MikeK1981
M

Forum statistics

Threads
137,817
Posts
1,992,851
Members
102,795
Latest member
Drewphil

Latest posts

Back
Top