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4T65E Differential INSTALL PICS!!!

Ok, I just lightly tightened the bolts on the diff cover and it closed up nicely without binding anywhere. I tried it with out the o-ring and the gap was still there but it closes up with very little pressure. And the trans spins freely in neutral.

I know all the bearings are in place correctly because I printed the pics and info from this thread and had them sitting right next to me :th_thumbsup-wink:

Also, what should I torque the housing bolts to and should I use some threadlocker on them?
 


Hey Guys, great info here, thanks Trannyman.

Tonight I have done quite a bit of reading and here is my question.

Current Vehicle: 2004 Grand Prix GT (L26) 3.05 final drive ratio

I have a 2002 GTP (4T64E-hd) at home.

I plan to use this to swap the diff and passenger side axle.

Is there any reason why i have to also swap the output shaft? any advantage?

Thanks.
 
can i use petroleum jelly to hold the bearing on the parking gear?? Or should I use some regular assembly lube that I have?
 
Hey Trannyman, great looking thread you made. Sure would appreciate if the title matched the rest of it, all your pic links have gone bad however.

Anyway I'm new here and I'm havin noise/loose passenger side CV Axle at the extension housing. It can be wiggled while parked - up, down, forward, and back about 3/4 to a full inch from center and I'm kinda wondering what to replace. I bought myself the GM manuals of that year in effort of not doing the work twice, leaving it parked too long one spot, or replace wrong stuff.

I've read the forum rules, this should be the right spot to post this? PM me if not, whomever it concerns
 


This is a long shot but I wonder if Dave could re-upload the pictures to this post if he still has them. It would be a huge help.
 
Anyway to refresh the pictures? I can not see them. I have a hell of a knock from my new ZZP trans from drive to reverse and vise versa. I think it's the differential as I have replaced multiple cv axles. I know it's an old post
 


pics are likely gone for good.

pop the hood, watch the engine as you shift it in and out of gear, if its moving all over the place the mounts are dead and can make a clunk sound.
 
That sucks the pictures are gone. Was such a great write up.

Everything is tight. I have all solid mounts. The dog bones are Wbodystore urathane and the lowers are solid rubbers. No movement at all. Talking with Tim at ZZP he though maybe the axles. I've replaced them several times with autozone axles. It still made the noise. I ended up putting the stock back in the passenger side and I am waiting for a brand new AC Delco for the left front because the bands were off of the boots and I used hose clamps to put them back on and did not like the looks of it. Zip ties did not hold tight enough. Thanks for the reply
 
That's what I thought. I want the stock cv axle anyways. Looks like I will end up pulling the diff and sending it in for a replacement. Do you know of any write ups floating around with pictures? I have both shafts and output shaft off right now. I just don't want to screw it up.
 


Lol. Sorry. I scanned through that one and seen it said something about Fbody and skipped past. Thanks for the help. If that's all it is then I'm not sure what I am worried about. I was reading all the comments about lining everything up and bearings falling etc..... He just pulled it apart with nothing falling apart. I guess I will pull it apart tomorrow and see if anything is shady. I took the output shaft out with the cv axle so I don't have to worry about that dreaded clip from the video.
 
Last edited:
Fixed Images - 23 March 2017

I went and found the original pictures from Dave's thread and mirrored them on my own server so hopefully they should never be lost again. Dave, if you'd prefer I did not do that, please let me know.

Also, Photobucket is the biggest piece of f'ng trash I've had to work with in forever. Thanks for being the reason so much content has disappeared from forums over the years. Assholes.

Trannyman95 said:
A few threads have had questions pertaining to the proper order of install for the associated parts with the differential. These steps apply to 98+ 4T60E/4T65E transmissions though 97 and earlier models are the same with the exception of the snap ring on the output shaft where it goes into the diff is a different style. These are assembly pics starting with the parts removed showing the order things go together and in which direction though I did add a pic of where to use a chisel in the center of the diff for removal. Enjoy!

Pic#1 - Here is a pic for disassembly reference for 98+ models. You will need to use a wedge shaped chisel and a hammer to crack it lose. This is required to unseat the snapring on the end to allow the diff to pull/slide off of the output shaft.

Diffinstall014.jpg


Pic#2 - This is a pic of the internal ring gear for the final drive/differential and the teeth MUST be in excellent condition!!! NO chips or nicks allowed here as damage to a new diff will occur!

Diffinstall025.jpg


Pic#3 - IMPORTANT STEP!!! DO NOT SKIP!!! You MUST put some type of assembly lube on the bearing to hold it to the park gear. If the bearing falls out of place OR you didn't take this gear out and don't know the bearing fell and try to bolt the diff housing back down it can BREAK because it is sticking out too far and the weak aluminum ears for the bolt holes on the housing will snap off! Make sure you put the bearing on the gear in the correct direction, larger-outer side surface goes towards park gear, smaller-inner race goes against internal ring gear-trans side!

Diffinstall004.jpg


Pic#4 - Proper direction for park gear to be installed into trans

Diffinstall005.jpg


Pic#5 - View of installed park gear

Diffinstall006.jpg


Pic#6 - Proper install direction for final drive sun gear. Recessed end goes TOWARDS transmission against park gear!

Diffinstall007.jpg


Pic#7 - View of installed sun gear

Diffinstall008.jpg


Pic#8 - Correct DRIVERS side output shaft install

Diffinstall009.jpg


Pic#9 - Correct PASSENGER side output shaft install

Diffinstall010.jpg


Pic#10 - Diff installed into transmission. Sometimes this can take a little wiggling and spinning to get it seating all the way as the gears all need to line up properly for it to fall into place. Notice the order on the housing end of the diff.... Shim first, then bearing with the ID of the bearing towards the differential

Diffinstall011.jpg


Pic#11 - Use a hammer to give the output shaft a good sharp tap to seat it into the diff (98+ models only!) If you are doing this IN the car then you will need to hold the drivers side CV tightly into the trans and tap the diff into the shaft while keeping the gears lined up. This is sorta hard to explain without pics or without you laying under the car to understand what I am referring to and I dont have pics of that in this thread.

Diffinstall012.jpg


Pic#12 - View of properly seated output shaft in the differential. Notice the snap ring is visible sticking roughly half way out of the gear.

Diffinstall013.jpg


At this point you are ready to put the diff cover/ housing back on the tail end of the transmission and if doing this in the car you are ready to reassemble all other parts on the outside of the trans. I hope these pics and info help out! If anyone has any questions or want me to add more to this please let me know

Dave
Click to expand...
 
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