Rising Sun Member Forums  

Go Back   Rising Sun Member Forums > Toyota 4x4 > General Tech Forum

Reply
 
Thread Tools
  #1  
Old 04-23-2008, 10:28 PM
Rezarf's Avatar
Rezarf Rezarf is offline
Hard Core 4+
 
Join Date: Aug 2005
Location: Louisville, CO
Posts: 4,091
Default One step forward, two steps back...

Well, in my general truck prep on the 40 for Moab tonight, I was going to replace the juice in the pumpkins. The front was nice and clean the rear was uhhh, not.

I found some (5-8) "glitter" on my magnet on the drain plug and a small peice of thin metal, like bearing material or something...

Now, this is a DD 40, it has got lots of issues both known and unknown, and I have known the pinion has had some play in it for some time. Last time I was in Moab I drug around a spare diff (it is in my garage) just in case something went bad. Now, if I grab the flange at the pinion I can move it pretty much in a circle. It has play all around (I can move it about 1/8"). The pinion nut is tight and staked and RED threadlocked so I am pretty sure it is the pinion, bearing or similar. Again, I drive this thing everyday and I haven't had an issue. It isn't any worse than it was a few years ago, the last time I messed with it so I am wondering if I could run the next few months until the ARB money is in place?

I know this needs to be address at some point. I had a plan of installing an ARB with this spare unit, but maybe it is time to drop it in?

I can always carry the diff as a spare again.

If I do drop it in I have a few questions:

1.How do I check the "new" diff to see if it is going to be any better for me, the history is unknown on it.

2.Do I need cork gaskets on both sides of the diff or can I simply use RTV or similar?

3. Can I run it, I know I have run it for a few years like this without issue, after all, it is a 40 designed for 3rd world use!
__________________
Rezarf <><
My rig... "Maude"
1976 FJ40 with some stuff and some leaks.

1999 UZJ 100 Series bone stock ready to rock AKA:The backup minivan

2012 Toyota Sienna Minivan, fastest Toyota in the stable.

My camping trailer build up thread.

"You 80 guys are just a Sawzall away from nirvana." -Red Chili
Reply With Quote
  #2  
Old 04-23-2008, 10:33 PM
Uncle Ben's Avatar
Uncle Ben Uncle Ben is offline
Rising Sun Member
 
Join Date: Aug 2005
Location: Louisville, Colorado
Posts: 13,162
Send a message via AIM to Uncle Ben
Default

Quote:
Originally Posted by Rezarf View Post
Well, in my general truck prep on the 40 for Moab tonight, I was going to replace the juice in the pumpkins. The front was nice and clean the rear was uhhh, not.

I found some (5-8) "glitter" on my magnet on the drain plug and a small peice of thin metal, like bearing material or something...

Now, this is a DD 40, it has got lots of issues both known and unknown, and I have known the pinion has had some play in it for some time. Last time I was in Moab I drug around a spare diff (it is in my garage) just in case something went bad. Now, if I grab the flange at the pinion I can move it pretty much in a circle. It has play all around (I can move it about 1/8"). The pinion nut is tight and staked and RED threadlocked so I am pretty sure it is the pinion, bearing or similar. Again, I drive this thing everyday and I haven't had an issue. It isn't any worse than it was a few years ago, the last time I messed with it so I am wondering if I could run the next few months until the ARB money is in place?

I know this needs to be address at some point. I had a plan of installing an ARB with this spare unit, but maybe it is time to drop it in?

I can always carry the diff as a spare again.

If I do drop it in I have a few questions:

1.How do I check the "new" diff to see if it is going to be any better for me, the history is unknown on it.

2.Do I need cork gaskets on both sides of the diff or can I simply use RTV or similar?

3. Can I run it, I know I have run it for a few years like this without issue, after all, it is a 40 designed for 3rd world use!
Swap it with the front for now!
__________________
KUBN
Kevin
TLCA #3007
Northside!

Colorado Trail Patrol
Stay on the Trail!
I'm the God-fearing, gun-toting, American flag-waving, conservative you were warned about!
Quote:
Originally Posted by AxleIke View Post
I need an FJ40....
Quote:
Originally Posted by Red_Chili View Post
Cruisers are superior
Reply With Quote
  #3  
Old 04-23-2008, 11:07 PM
Rezarf's Avatar
Rezarf Rezarf is offline
Hard Core 4+
 
Join Date: Aug 2005
Location: Louisville, CO
Posts: 4,091
Default

Quote:
Originally Posted by Uncle Ben View Post
Swap it with the front for now!
Seriously? Then I gotta pull the birfs ... I have an extra just sitting on my shelf.
__________________
Rezarf <><
My rig... "Maude"
1976 FJ40 with some stuff and some leaks.

1999 UZJ 100 Series bone stock ready to rock AKA:The backup minivan

2012 Toyota Sienna Minivan, fastest Toyota in the stable.

My camping trailer build up thread.

"You 80 guys are just a Sawzall away from nirvana." -Red Chili
Reply With Quote
  #4  
Old 04-23-2008, 11:21 PM
AxleIke's Avatar
AxleIke AxleIke is offline
Rising Sun Member
 
Join Date: Apr 2006
Location: Arvada, CO
Posts: 3,411
Default

RTV is fine

I never use gaskets on any of my drivetrain. I have zero leaks. I know a guy who put gaskets on everything, and everything leaks.
__________________
Isaac

Baby Beast 2- 1999 4Runner SR5

Baby Beast -1987 4Runner SR5-Gone, but not forgotten

Generation Dead
Reply With Quote
  #5  
Old 04-23-2008, 11:35 PM
farnhamstj's Avatar
farnhamstj farnhamstj is offline
Hard Core 4+
 
Join Date: Aug 2005
Location: vail co
Posts: 2,585
Default

If you have a spare, why not put it in? If you know it is the correct r&p. Why swap front to rear if you know the bearing(S) bad? If the 'new' dif doesn't have play, it's probably better than what you have currently. I have a cork gasket for a 40 I'll be bring to CM08, you can have it. RTV the dif, cork the cover.
__________________
98 uzj100. Factory rear-ARB front locked 4.88's. ARB Bull, Warn 9000, Irbis rear bumper, Slee sliders and belly pan. OME t-bars w/863 rears, HID, XM
KD0GWO
Reply With Quote
  #6  
Old 04-23-2008, 11:53 PM
nuclearlemon's Avatar
nuclearlemon nuclearlemon is offline
Hard Core 4+
 
Join Date: Aug 2005
Location: denver
Posts: 5,745
Default

the cork gasket only goes on the cover. there's a paper gasket between the pumpkin and the axle housing. the only time i use rtv is as a trail fix. gaskets have always worked fine for me. never a drop under any of my diffs.
__________________
ige tlca #1431
Reply With Quote
  #7  
Old 04-24-2008, 01:25 AM
Uncle Ben's Avatar
Uncle Ben Uncle Ben is offline
Rising Sun Member
 
Join Date: Aug 2005
Location: Louisville, Colorado
Posts: 13,162
Send a message via AIM to Uncle Ben
Default

Quote:
Originally Posted by Rezarf View Post
Seriously? Then I gotta pull the birfs ... I have an extra just sitting on my shelf.
I suggested swapping if you decide to drive it as is and it gets worse or the spare diff you have is iffy. Personnally, I would swap to your spare as long as it's usable.
__________________
KUBN
Kevin
TLCA #3007
Northside!

Colorado Trail Patrol
Stay on the Trail!
I'm the God-fearing, gun-toting, American flag-waving, conservative you were warned about!
Quote:
Originally Posted by AxleIke View Post
I need an FJ40....
Quote:
Originally Posted by Red_Chili View Post
Cruisers are superior
Reply With Quote
  #8  
Old 04-24-2008, 08:44 AM
Red_Chili's Avatar
Red_Chili Red_Chili is offline
Hard Core 4+
 
Join Date: Aug 2005
Location: Littleton CO
Posts: 8,409
Default

Another vote for RTV only. Permatex "The Right Stuff" is expensive but seals better than anything.

Don't drive on a bad pinion bearing, it WILL come to a bad end!
__________________
-Bill Morgan
Heb Dduw, heb ddim; Duw a digon
Abnormally aspirated
KDRCH
Bio Page
I'm that gun-totin', farm-raised, evangelical, pro-environment, OHV ridin'/drivin', Southern civil rights pro-labor Liberal yo' momma told you couldn't possibly exist.
Reply With Quote
  #9  
Old 04-24-2008, 08:45 AM
MDH33's Avatar
MDH33 MDH33 is online now
Rising Sun Member
 
Join Date: Mar 2006
Location: Land of Corn
Posts: 5,798
Default

My thought (not worth much) is that if it's not causing any issues/vibrations, run it as is and replace it down the road. Getting too close to CM departure time to be tearing things apart.
__________________
--Martin

'85 FJ60
Reply With Quote
  #10  
Old 04-24-2008, 10:06 AM
rover67's Avatar
rover67 rover67 is offline
Rising Sun Member
 
Join Date: Nov 2007
Location: Boulder, Co
Posts: 5,390
Default

I'll be driving down there on wed night. i could sweep ya up.



seriously dude, sorry for the troubles... maybe you can have somebody that knows rearends take a look at the chunk yo uhave sitting there? if it is good to go (not to go against martins opinion or anything) i might really look into swapping it. i mean it shouldn't take more than a few hours. I have 3 of the the cork gaskets for a 60 if that works for a 40. I use cork on the cover side since i hate scraping silicone, and the stock gasket or silicone on the chunk side.

but yeah, a few hours is pretty significant in prep time.. I am not near done with the rear bumper and I go out of town tomorrow through tuesday night. still have to fix leaks, pack, mount fire stuff, mount co2 man o man. Hell, i'd help with the chunk but bro I am already freaking..
__________________
Marco Capote
KDGWX
85 FJ60
82 FJ40
Reply With Quote
Reply

Thread Tools

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


All times are GMT -6. The time now is 07:49 PM.


Powered by vBulletin® Version 3.7.1
Copyright ©2000 - 2014, Jelsoft Enterprises Ltd.