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Tim s left diff bearing update

J

johndeeregreen

Member
We checked the play on both bearings, both left and right bearings seem great.
When you say left or right side, are you sitting in the seat or are you standing in front of the tractor facing it?
 
Your left arm is your left arm no matter whether you are looking at the ocean or the sand.
 
If you are on this side of the BIG Pond, the drivers side is the left side... WINK
 
1. Did you actually LOOK at the bearing in question that Tim told you was prone to failure? Nothing like a close-up look for spalling or other damage starting.

2. You are looking for (IIRC) .002" to .005" of PRELOAD, NOT endplay.

3. "Left" is as you sit on the seat and face in the direction of normal forward travel!
 
(quoted from post at 22:47:27 01/23/15) 1. Did you actually LOOK at the bearing in question that Tim told you was prone to failure? Nothing like a close-up look for spalling or other damage starting.

2. You are looking for (IIRC) .002" to .005" of PRELOAD, NOT endplay.

3. "Left" is as you sit on the seat and face in the direction of normal forward travel!
Click to expand...



Yes we looked at the bearing, looked at every roller in that bearing.
What has me questioning the left/right thing, is there is an oil line running on the left side going to the diff, the way i read tims post was thhat the diff oil line was on the right side.
The bearing, just by looks, looks new.
 
Yes the diff lock line is on the right side, ring gear lays to the left side,,standing behind looking forward,,got one laying here looking at it...the left bearing is the one that fails first, it has more thrust on it because the ring gear is on that side,,if it looks good it is good, the outer race, the one in the quill will start to peal off..
 
Thanks for the reply.
There is a line that runs near the left side rear end housing, you can see it with a mirror, any idea what that line is for?
The guy that is helping on the project swears its the diff oil line. With the mirror the line looks bent and ready to break.
 
Yes Power shift ring gear is on the right side,,Quad Range is on the left side,, on the power shift the pressure would be on the "Right" bearing, because of the ring gear on that side,, Wow,, we may need to set down and have a cold one on this,, we are confusing each other,,so you must be dealing with a "power Shift",,so remove the "right" quill and actually look at the race for peace of mind.
 
(quoted from post at 23:58:48 01/23/15) Yes Power shift ring gear is on the right side,,Quad Range is on the left side,, on the power shift the pressure would be on the "Right" bearing, because of the ring gear on that side,, Wow,, we may need to set down and have a cold one on this,, we are confusing each other,,so you must be dealing with a "power Shift",,so remove the "right" quill and actually look at the race for peace of mind.
Click to expand...

A cold one sounds like a good idea.
The ring gear is on the LEFT on a powershift and RIGHT a quad.
So the bearing on the opposite side of the ring gear is the bearing that needs to be checked over real good.
My ring gear is on the left, since its a powershift, making the bearing i need to check on the right side.
And of course the right side axle housing is the one i have done and put back on the tractor. Since i thought the left side was the side i had to really check over good.
Im taking a break for now, my head hurts.
 
No,No,,Power shift on the right,,,Quad range on the "Left",,now were getting dizzy...if yours is a Power shift you need to be checking the "Right" bearing...
 
(quoted from post at 01:19:24 01/24/15) No,No,,Power shift on the right,,,Quad range on the "Left",,now were getting dizzy...if yours is a Power shift you need to be checking the "Right" bearing...
Click to expand...


Since the diff is opposite of a quad i see that i will have to chexk tje right side one.
Couple questions, why is the diff facing complete opposite in a quad vs powershift?
Isnt the side the teeth are on the ring gear the side of the tractor its consider to be on?
Example, if the teeth of the ring gear are facing left, the ring gear is on the left side of the diff?
If the teeth are facing right, the ring gear is on the right side?
 
Funny. I work at a truck manufacture plant. All of the trucks I work on either go to Australia or South America. And the drivers side is on the right. Weird changing gears with your left hand and driving on the right side of the road. Get a lot of funny looks from the delivery trucks while driving around.
 
Here are some pics to help clarify this..
a180561.jpg

a180562.jpg
 
I cant figure out how to post pics from this smart phone.
Could someone post a pic from jd parts of a diff
from a 4440 powershift and a 4440 quad.
Please and thank you
 
(quoted from post at 03:09:39 01/24/15) I just posted a couple...
Click to expand...

Opps i missed them,
I looked at them now, yes that cleared things up. Your right.
I see exactly how it is now, and how that oil line goes.
The diff bearing race thats in the quill, i see there are six bolts that hold the quill, the way the pics look are there nuts on the bolts?
Are the nuts fastened so they cant turn/ drop when the bolts are removed.
 
No the nuts can and will fall...there may be an opening to let you reach it,, I will look at the one I have in yhe shop tomorrow
 
(quoted from post at 03:57:59 01/24/15) No the nuts can and will fall...there may be an opening to let you reach it,, I will look at the one I have in yhe shop tomorrow
Click to expand...


When i get time im going to check the RIGHT side diff bearing, now that we have that confusion figured out .
Tim, do you normally check the pre load on it or do you normally just look for spalling on the bearing and or race?
Thanks again for your help.
 
If I can feel a bit of end play I delete a thin shim and go back together..It's a kind of "gray" area to determine the actual pre-load.
 
(quoted from post at 18:25:06 01/24/15) If I can feel a bit of end play I delete a thin shim and go back together..It's a kind of "gray" area to determine the actual pre-load.
Click to expand...


If i remember right, the right side bearing had three thousandth of endplay
 
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