KA transmission help

[SoCalDrifter]

ok so i just changed my clutch in my car and now its time to put the transmission back in and ive tried 5+ times and i cant get it lined up or anything so i was wondering if anyone can give me some tips to get it in or can help me get it in and ill give you money or if you get it in for me. Thanks

[ryandriftingfat]

What isn't lining up? Input shaft? If your clutch kit came with the spline alignment tool, did you use that to center the clutch disk when you tightened down the pressure plate?

[SoCalDrifter]

What isn't lining up? Input shaft? If your clutch kit came with the spline alignment tool, did you use that to center the clutch disk when you tightened down the pressure plate?

the input shaft isnt lining up and i used the alignment tool for the clutch and everything but i cant seem to get it in the hole

[JM42]

make sure the clutch disk has the right splines on it and you didnt end up with the wrong parts, (take it iff and see if it slides on the input shaft) or the alignment tool may not be right.

[SoCalDrifter]

make sure the clutch disk has the right splines on it and you didnt end up with the wrong parts, (take it iff and see if it slides on the input shaft) or the alignment tool may not be right.

its the right clutch and it fits over the input shaft fine it just wont go in when i put the whole transmission up i dont know if its something im doing wrong thats why i wouldnt mind paying someone to put the transmission up cause its been in my friends garage and i need it out

[ryandriftingfat]

Are you able to get the end of the input shaft into the pilot bushing?

[SoCalDrifter]

Are you able to get the end of the input shaft into the pilot bushing?

ya the pilot bearing fits over the input shaft

[omgRWDgoodness!]

Have you tried putting the transmission in gear? This will extend the input shaft out further and aid in getting the transmission in.

[SoCalDrifter]

Have you tried putting the transmission in gear? This will extend the input shaft out further and aid in getting the transmission in.

i havent tried that but i think it would make it harder because it would give it less room to move around when putting it up

[tre4s13]

i havent tried that but i think it would make it harder because it would give it less room to move around when putting it up
Straddle the tranny, facing the motor...while trying to shove the tranny in.... at the same time, try wiggling it up and down. when all else fails... take a break and tell me what the length and thread pitch is for the transmission mount bolts for me? :) and possibly carrier bearing bolts too :)

[SoCalDrifter]

Straddle the tranny, facing the motor...while trying to shove the tranny in.... at the same time, try wiggling it up and down. when all else fails... take a break and tell me what the length and thread pitch is for the transmission mount bolts for me? :) and possibly carrier bearing bolts too :)

i tried shaking twisting i tried pretty much everything and it just doesnt go and then sometimes it gets stuck agionst the fire wall and then i have to take it all the way down and restart then other times it gets stuck agionst the clust and i have to unbolt the pressure plate so it comes off the clutch and then restart agion and if i remember ill look at them for you when we work on it later

[Walperstyle]

it will go, just keep on working on it.

[tre4s13]

dont give up, that shit does get annoying at times... just take a break, rebuild your energy and try again. subscribed.

[SoCalDrifter]

well im gunna go and start working on it in the next hour or so so ill let everyone know how it goes. Probably will be in the same spot as before but well see if anyone can help or wants to come by and make some extra money and put it in lmk

[tre4s13]

well im gunna go and start working on it in the next hour or so so ill let everyone know how it goes. Probably will be in the same spot as before but well see if anyone can help or wants to come by and make some extra money and put it in lmk
you'll never learn if you don't try :/

[Hywarp161]

it can be a real pia but it will go, the threads fit very tight so just the right angle is important, you can also try a come along type winch.

[SLiDe_WaYz]

I just had this issue on my SR. I had to file down the groves on my clutch disk because they were mushroomed out ad wouldn't fix over the splines on the input shaft. If you can get the disk to go onto the input shaft just put 2 bolts in each side of the trans and go 1 turn at a time until the trans is on the block.

[BDMs14]

You can also turn the crank pully with a 27mm socket/ratchet while a friend pushes the tranny in and wiggles it.
Did this while I was doing my 5 speed swap and the imput shaft whent in on the 2nd attempt.

[SoCalDrifter]

You can also turn the crank pully with a 27mm socket/ratchet while a friend pushes the tranny in and wiggles it.
Did this while I was doing my 5 speed swap and the imput shaft whent in on the 2nd attempt.

more info please

also we think we found are problem the transmission was left in 1st gear and we think that pushed the input shaft forward so it doesnt give it all the room to move forward so tomarrow were gunna put it in neutral but my question now would be if i pull the shifter from 1st to nuetral while it isnt hooked up and there isnt any fluid in it will it be bad? the transmission before we put a new clutch is was fine and never was grinded on so would it really hurt it that much?

[SLiDe_WaYz]

No you'll be fine. We stabbed my trans in while it was in 1st gear so we could turn the splines so they would match up.

[SoCalDrifter]

No you'll be fine. We stabbed my trans in while it was in 1st gear so we could turn the splines so they would match up.

but i think its to far forward thats why we cant get it and so your saying i can just shift it and it will be fine it wont create a grind or anything once i get the transmission in or if i ever get it in haha

[SLiDe_WaYz]

Maybe I'm mis understanding, what exactly do you mean by to far forward? It should go into the pressure plate, then the splines should go into the clutch disk, and then the input shaft should stab into the pilot bearing. If your to far forward you should already be stabbed in just lacking a inch or so to be flush with the block. Correct?

[DRIFTO16]

Keep trying i just replaced my clutch and this was a pain too bu luckily i had two guys help
and a little pole jack that helped us bring it up
dnt quite
ive never heard of a guy who quit trying to get it in the hole lol
take a breather and try again from different angles it has to be right on
good luck
let us know how it goes

[SoCalDrifter]

Maybe I'm mis understanding, what exactly do you mean by to far forward? It should go into the pressure plate, then the splines should go into the clutch disk, and then the input shaft should stab into the pilot bearing. If your to far forward you should already be stabbed in just lacking a inch or so to be flush with the block. Correct?

no i get what your saying but i dont think you understand what im saying like when you shift the input shaft goes forward to engage the clutch and make it spin and when i took out my transmission i put the car in 1st gear becasue it was easier to remove the screws for my shifter and i forgot to put it into neutral before i took it out so i wanna shift it into neutral now but its not hooked up to anything and there isnt any fluid in my tranny so i was wondering would it be bad for my tranny if i just hooked my shifter back up and just pulled it out of first to neutral so the input shaft is shorter and i have more room to work with? or would that create a grind once i get it in?

Keep trying i just replaced my clutch and this was a pain too bu luckily i had two guys help
and a little pole jack that helped us bring it up
dnt quite
ive never heard of a guy who quit trying to get it in the hole lol
take a breather and try again from different angles it has to be right on
good luck
let us know how it goes

well right now i have 2 jacks that hold up the transmisson and me and 2 other friends but i think were gunna hopefully get it tomarrow and if i dont idk what im gunna do we have been trying to just get the transmission in for the past 3 and 1/2 days everything else was easy as could be

[SLiDe_WaYz]

Oh man just drop your shifter back into the hole and put it back in neutral your fine. But it's a little easier if you stab it in, and as it starts to go have someone with a 27MM ratchet like said above turn the crank so the splines line up, or shift the trans into some gear and turn it by hand on the back of the trans u til they line up with the clutch disk and pop in.

But to answer your question your fine to shift into neutral. But may I say it's a BxxCH to stab the trans with the engine still in the car. I tried for 3 days and got fed up and just pulled the entire engine.

[mxexux]

Is the engine tipped back to help angle the clutch side down? I found that this helps tremendously. Also I've had as much trouble as you before when I didn't realize that with all the wiggling around, I actually moved the clutch inside the pressure plate mis-aligning it and making it impossible for the tranny to slide all the way in. You may want to loosen the pressure plate and align the clutch again.

[SoCalDrifter]

Oh man just drop your shifter back into the hole and put it back in neutral your fine. But it's a little easier if you stab it in, and as it starts to go have someone with a 27MM ratchet like said above turn the crank so the splines line up, or shift the trans into some gear and turn it by hand on the back of the trans u til they line up with the clutch disk and pop in.

But to answer your question your fine to shift into neutral. But may I say it's a BxxCH to stab the trans with the engine still in the car. I tried for 3 days and got fed up and just pulled the entire engine.


ok im just gunna shift it into neutral tomarrow and then hopefully it will go it because we are about alittle less than a 1/2 inch from getting into the whole but we figured since its in 1st it is making it harder and for the splines to line up ill just shift it into 1st agion once we get the transmisson on so they line up but also the car isnt in my garage so i cant just pull the motor nor do i have the time to do that

[SoCalDrifter]

Is the engine tipped back to help angle the clutch side down? I found that this helps tremendously. Also I've had as much trouble as you before when I didn't realize that with all the wiggling around, I actually moved the clutch inside the pressure plate mis-aligning it and making it impossible for the tranny to slide all the way in. You may want to loosen the pressure plate and align the clutch again.

no the engine isnt tipped back because we only have 2 jacks and were using both to hold up the transmisson so we cant tip the engine and the clutch and the pressure plate are lined up right because i can stick my finger all the way threw both and it lines up perfectly like i can put my finger threw the clutch and into that whole where the pilot bearing is

[mxexux]

Maybe one of your friends could tip the engine back by hand as you're trying to wiggle it in. Its all about matching the angles and making the engine and tranny perfectly parallel.

[SLiDe_WaYz]

You may want to take off the clutch and re align it with your tool and TQ it to specs again. If your only a half inch off you should be stabbed in unless your splines aren't lines up with the input shaft. I would take the clutch off again and re align it. And have a friend tilt the motor backwards. Makes it a ton easier. You just have to find that perfect angle. After 3 days I gave up going from the bottom and just pulled the engine. Had the trans on in 5 min and re installed the engine and trans in 2 hours it would be alot easier on your part to pull it all out.

[andisan]

Only 2 jacks, theres your problem :keke:, just messing, i hope you figure it out,
im going to be doing a clutch job on mine soon,
so im going to see how you end up putting it in for my future reference :), good luck

[Tantwoforty]

check the pilot bushing, mine got turned sideways when i was trying to get my tranny on yesterday..
i ended up just putting it on the imput shaft itself, wich made the tranny have troube getting that last half inch on.. so i used longer bolts to kind of press it on then switched to the other ones..
it worked out perfect.

[SLiDe_WaYz]

check the pilot bushing, mine got turned sideways when i was trying to get my tranny on yesterday..
i ended up just putting it on the imput shaft itself, wich made the tranny have troube getting that last half inch on.. so i used longer bolts to kind of press it on then switched to the other ones..
it worked out perfect.


Man your brave. I'd be scared to crush the bearing itself doin it that way.

[SoCalDrifter]

Maybe one of your friends could tip the engine back by hand as you're trying to wiggle it in. Its all about matching the angles and making the engine and tranny perfectly parallel.

what do you mean by tipping it cause i dont have another jack to hold up the engine

You may want to take off the clutch and re align it with your tool and TQ it to specs again. If your only a half inch off you should be stabbed in unless your splines aren't lines up with the input shaft. I would take the clutch off again and re align it. And have a friend tilt the motor backwards. Makes it a ton easier. You just have to find that perfect angle. After 3 days I gave up going from the bottom and just pulled the engine. Had the trans on in 5 min and re installed the engine and trans in 2 hours it would be alot easier on your part to pull it all out.

ive taken the clutch off about 7 times once it was on and re did it and everything and when i say a 1/2 inch i mean only half of the input shaft is covering the whole and the other half has to get up to get in but there isnt any more room to jack up so its stuck

check the pilot bushing, mine got turned sideways when i was trying to get my tranny on yesterday..
i ended up just putting it on the imput shaft itself, wich made the tranny have troube getting that last half inch on.. so i used longer bolts to kind of press it on then switched to the other ones..
it worked out perfect.

and at first we did put the pilot bearing on the input shaft and when we did that last we were about to put the transmission on perfectly and then my friend told me we forgot to take the old pilot bearing out so we were banging on the old one with the new one and it seems alot harder to put it on the input shaft cause then it has to go threw the clutch so we put the pilot bearing in the whole but ill probably try the longer bolt idea but what did you do to get your tranny in? cause im out of ideas

[Walperstyle]

note: G35 transmissions are just as anoying. Friend of mine with a high hp G had to do this last year. I slipped out the back door after 10 minutes. lol.

[240sohc]

i just changed my clutch 3 months ago...so i know your anguish.

getting in the hole wasnt an issue, likewise, we kept hitting the firewall. the nismo motor mounts raise my engine a little plus they gave no slack when trying to mate the tranny back up. so we loosened the mounts and i was able to tilt the engine back while my friend worked/wiggle the tranny back in place. this angle made all the difference. patience and alot of elbow grease.

[SoCalDrifter]

i just changed my clutch 3 months ago...so i know your anguish.

getting in the hole wasnt an issue, likewise, we kept hitting the firewall. the nismo motor mounts raise my engine a little plus they gave no slack when trying to mate the tranny back up. so we loosened the mounts and i was able to tilt the engine back while my friend worked/wiggle the tranny back in place. this angle made all the difference. patience and alot of elbow grease.

i was thinking of loosening the tranny mounts but seems like im getting over my head to do a clutch change and did hitting the firewall make any difference i hit mine a few times but the new flywheel i got is pretty big so doesnt give alot of room to hit

[aph10]

I remember doing this but I was installing the clutch fork pivot ball b/c mine broke....
what i did was align everything up until the imput shaft was about 1 to 1/2 an inch from the bottom of the clutch, then i got the car jack n jacked the front of the tranny up....i heard a thud then checked and everything was in....
just my 2 cents....

[mxexux]

what do you mean by tipping it cause i dont have another jack to hold up the engine


Granted that you don't have solid mounts, you should be able grab the front of the engine (ie. front of valve cover or water pump pulley) and push towards the rear of the car and tip the engine back. You don't need to have ape strength to do it. I works pretty good when you have somebody rocking the engine as described above while you try and stab the tranny in.

[Tantwoforty]

yeah, but i felt like that would probly work..
dont take my work for it yet, i havent started the car yet..

i put the tranny in with the moter leaning back on the firewall, the shifter in and in 3rd..
the car was up on 2 jack stands

me and my buddy layed under the car and he picked up the front and i the back.

we got it in the area and then put the shifter in the hole, then we starting trying to work it in..

we just twisted the whole tranny back and fourth a bit and it caught clutch, of course becuase i had slid the pilot bushing on the input shaft that was hitting the flywheel
so i used some long bolts and clamped it down evenly and slowley.

then i put on the rear tranny bracket and bled the clutch.

[SoCalDrifter]

yeah, but i felt like that would probly work..
dont take my work for it yet, i havent started the car yet..

i put the tranny in with the moter leaning back on the firewall, the shifter in and in 3rd..
the car was up on 2 jack stands

you said you only had it on 2 jack stands and im guessing in the front but on my car since its slammed i have the car on 4 jack stands but the car is even do you think that is making it harder to aline everything

also im gunna try to push the engine today and see how that works out

[s13 @ fullboost]

be carful when pushing on the motor you dont want to tear or break a motor mount use a little lap paste on the input shaft then using a floor jack to support the middle of the trans work your way into the motor if you think your alighnment tool is wrong try this trick that always works for me take a 10mm deep socket and rap it with electrical tape and use that as an alighnment tool never lets me down.

[SoCalDrifter]

be carful when pushing on the motor you dont want to tear or break a motor mount use a little lap paste on the input shaft then using a floor jack to support the middle of the trans work your way into the motor if you think your alighnment tool is wrong try this trick that always works for me take a 10mm deep socket and rap it with electrical tape and use that as an alighnment tool never lets me down.

im pretty sure the clutch and everything is lined up right but i cant ever get the input shaft into the whole cause once it hits my firewall i cant position it anymore and then i pretty much have to just start all over agion but i think the engine idea will work and if my engine mount broke how would you know? would it be ovbious?

[JM42]

thats what i had to do is tilt the motor back. you can either just push on the valve cover like somebody else said or use a jack and carefully lift the front of the engine from the crank pulley, it doesnt need much before you will be able to slide it in, and it shouldnt damage your motor mounts.

[SLiDe_WaYz]

Loosen your mounts I have nismo's so just undo the bottom bolt, gives you plenty room to tilt the engine to the firewall

[BDMs14]

more info please

also we think we found are problem the transmission was left in 1st gear and we think that pushed the input shaft forward so it doesnt give it all the room to move forward so tomarrow were gunna put it in neutral but my question now would be if i pull the shifter from 1st to nuetral while it isnt hooked up and there isnt any fluid in it will it be bad? the transmission before we put a new clutch is was fine and never was grinded on so would it really hurt it that much?

Ok, here it goes:
car was jacked up about 20" off floor on 4 jack-stands,
I loosened the motor mounts slightly just to have some play with the engine,

after I triple checked that the clutch was aligned correctly I placed the tranny on my floor jack and got it up to the engine (straight up) and proceeded to stab it on to the engine/clutch,
I installed the bolts that go on each side of the bellhousing (almost opposite to each other on both sides) and threaded them but just snug them cuz you DON'T want to "crush" the clutch disk,
then I had my friend push in and wiggle the tranny while I turned the crank (clockwise) with the 27mm socket/ratchet and at about 1/4 of crank rottation,
I heard a slight (spring loaded) "prap" sound and then imput shaft just slipped in.
Whole thing took less that 2 minutes to do.
Hopes this helps, good luck!

[SoCalDrifter]

well we got the transmission in the whole and everything long ass process but the stupid actuater thing that pushes back for the throw out bearing is stuck we think its to far in or something idk my friend thought it was a good idea and took pryers and pulled the tranny and the long block together looked like it worked and everything then i noticed the throw out bearing thing wouldnt move when i touched it so what could be wrong? could it be in to far?

[BDMs14]

throw-out bearing installed backwards maybe???

[SoCalDrifter]

throw-out bearing installed backwards maybe???

no its installed fine and everything was good and i checked it before we started putting it up and it was good and now that its in it wont move

[SoCalDrifter]

also does anyone know if mobile 75w90 gl is a good fluid to use for transmission fluid on a s13?

[sandcrawler]

I encountered the same problem w/ my S13; tranny didn't clear the underbody... and the pilot bushing that came w/ my clutch kit was too small. After putting the tranny on a transmission jack (highly recommended that you use a tranny jack), I rotated the tranny 90 degrees clockwise (making the starter and/or clutch fork point toward the ground), and raised the tranny up to line up w/ the engine. (I also removed the tranny crossmember so it'd clear the body when it's raised up.) Once the tranny and engine are lined up, push the tranny forward and rotate it counter clockwise at the same time until the splines on the input shaft line-up w/ the clutch; the input shaft should then slip through the pilot bushing; assuming everything was lined up w/ the alignment tool... and if the pilot bushing is the right size. By rotating the tranny, you won't have to loosen the engine crossmember, loosen the engine mounts, and/or raise the front of the engine and/or pull-down on the back of the engine to get the clearance you need to line-up the tranny.

As for the fluid, the FSM says GL-4. I used AMSOIL because it was the only oil I could find that was GL-4; most other fluid I found was GL-5.

[keytops]

Kinda what this guy ^ said. I have a trick though, put the car in thrid and remove the stick for the shifter (held in by C clips). Now that its out of the way, line the tranny up and have someone stick the driveshaft in the back and rotate slowly while you push it forward, once the driveshaft is hard to spin, support the trans at the bellhousing and work it in by moving it up and down from the end with the driveshaft. Still a PITA but this does work.

[SLiDe_WaYz]

I had to do what guy said above, turn the trans at a 90 degree angle, then get it to go into the pressure plate. After that turn it back to it's normal upright position, loosen your motor mounts like stated above and tilt your motor backwards. Then attempt to put the trans in. Ou have to have a PERFECT angle. It isn't easy but it has to be perfect.

I will never do this again it's far easier to take outthe engine and do it that way.

[SoCalDrifter]

ok just making sure i got all this info right my throw out bearing is to small? i used the one that came with the clutch so i should put the old one in? and also the fluid i got isnt the right kind?

[mxexux]

Mobile 75w90 works fine and it is a GL-5 oil. I use it in my tranny and I have to say that I'm not impressed with it. Shifts are a little stiffer and it whines slightly.

[SLiDe_WaYz]

Trans is Gl4 which is 75-90, diff is gl5.

[The Gray Ghost]

Loosen the cross member bolts but do not take them all the way out and this should drop the engine down far enough to slide the trans in. It worked for me

<a href="http://s743.photobucket.com/albums/xx73/CopterPilot/?action=view&amp;current=SSPX0027-1.jpg" target="_blank"><img src="http://i743.photobucket.com/albums/xx73/CopterPilot/SSPX0027-1.jpg" border="0" alt="Photobucket"></a>

[SoCalDrifter]

Loosen the cross member bolts but do not take them all the way out and this should drop the engine down far enough to slide the trans in. It worked for me

<a href="http://s743.photobucket.com/albums/xx73/CopterPilot/?action=view&amp;current=SSPX0027-1.jpg" target="_blank"><img src="http://i743.photobucket.com/albums/xx73/CopterPilot/SSPX0027-1.jpg" border="0" alt="Photobucket"></a>

picture didnt work

but thanks guys we have it in the hole now we just cant get the actuater to work its to stiff and wont move back does anyone know what it could be i know the guy above said it could be to small but why would they give me one that is to small with the clutch that is brand new? any other thoughts?

[240sohc]

I forgot to mention that I bought the exedy clutch kit from nissan and the pilot bearing that it came with was too small. Was forced to use the old one, however, it appeared to be in just as good condition as new one. Hopefully this solves your problem.

[SoCalDrifter]

we are finally finishing it tomarrow just gotta bolt in the drive line and hopefully we did everything right and it will be back on the road thanks for all the tips guys

[ericcastro]

The bearing and fork deal has that wire that keeps it in place on the shaft, that may have gotten tweaked in your struggles.

I just did my tranny onthe side of my street solo.
It sucks.

Jacking the front of the engine up a little helps to give you angle.
I rotated the tranny to the starter side I believe.
I also took my big hammer and knocked back the tunnell an inch or 2 where it kept hitting.
I also loosesned my subframe bolts (4 of them, think its subframe) this lowered the whole engine down another inch.

then its just a struggle to get it lined up, then in, then all the way in.

If you are gonna be struggling wiht it wednesday, let me know, i may have work off and can stop by.

[SoCalDrifter]

The bearing and fork deal has that wire that keeps it in place on the shaft, that may have gotten tweaked in your struggles.

I just did my tranny onthe side of my street solo.
It sucks.

Jacking the front of the engine up a little helps to give you angle.
I rotated the tranny to the starter side I believe.
I also took my big hammer and knocked back the tunnell an inch or 2 where it kept hitting.
I also loosesned my subframe bolts (4 of them, think its subframe) this lowered the whole engine down another inch.

then its just a struggle to get it lined up, then in, then all the way in.

If you are gonna be struggling wiht it wednesday, let me know, i may have work off and can stop by.

ok thanks man ill let you know if it doesnt run after tomarrow we just have to put the driveline in and were done.

[SoCalDrifter]

The bearing and fork deal has that wire that keeps it in place on the shaft, that may have gotten tweaked in your struggles.

I just did my tranny onthe side of my street solo.
It sucks.

Jacking the front of the engine up a little helps to give you angle.
I rotated the tranny to the starter side I believe.
I also took my big hammer and knocked back the tunnell an inch or 2 where it kept hitting.
I also loosesned my subframe bolts (4 of them, think its subframe) this lowered the whole engine down another inch.

then its just a struggle to get it lined up, then in, then all the way in.

If you are gonna be struggling wiht it wednesday, let me know, i may have work off and can stop by.

hey if you wanna come by and try in figure whats wrong now that would be cool


so now everyone we got the clutch in added fluid put everything back and i guess it wasnt the clutch that went bad. It is still doing the same thing as before when i put it in gear it makes a really weird noise and doesnt go anywhere so now i think my drive shaft is broken because the noise is coming from the rear of the car how would i know if it was broken or not? also is there anything else that could be wrong with it since its not the clutch? thanks for the help

[SLiDe_WaYz]

The diff? Don't think ur driveshaft would be the problem.

[SoCalDrifter]

The bearing and fork deal has that wire that keeps it in place on the shaft, that may have gotten tweaked in your struggles.

I just did my tranny onthe side of my street solo.
It sucks.

Jacking the front of the engine up a little helps to give you angle.
I rotated the tranny to the starter side I believe.
I also took my big hammer and knocked back the tunnell an inch or 2 where it kept hitting.
I also loosesned my subframe bolts (4 of them, think its subframe) this lowered the whole engine down another inch.

then its just a struggle to get it lined up, then in, then all the way in.

If you are gonna be struggling wiht it wednesday, let me know, i may have work off and can stop by.

The diff? Don't think ur driveshaft would be the problem.

i was thinking it might be the differential also but i just got a 2 way so ill put that in and see if that fixes it but any other ideas?

[ericcastro]

Hey, PM me your number.
I have thursday off or can stop by later tonight.

Does the drive shaft spin after you let the clutch out? (if it doesnt, its not your diff)

When its in gear, engine off, can you roll the car?