D18 T90 Gasket

I installed my T90 and D18 combo a few months back without a gasket between them. Today, while looking online for a gasket for the pto cover for the 18 I saw a 'Texas' shaped gasket. mehh

My question is is that what I think I saw in the picture? If so, is that a critical gasket? Pretty sure I know the answers to those but I want to make sure....


Thanks,
Lance

 

The "Texas" shaped gasket is for between the transmission and transfer case. It should be there. It not only acts as a gasket but also a "shim" to locate the transfer case bearing and gear depth in relation to the transmission.
There are different "Texas" shaped gaskets so make sure you get one for a small hole transfer case with the cut outs for the idler shaft protrusions on the back of the transmission.


Sent from my iPhone

 

Thanks nickmil, Thats what I thought. Order a gasket kit last night. Glad I caught it early.

 

Your signature shows you have a 66 with V6 so it should of originally had a T-86AA tranny which is for a big hole D-18.. The T-86AA rear bearing retainer ring is used on the T-90 to match the original D-18 unless the T-90/D-18 combo (original small hole) was changed as a completed unit.

 

Does the gasket look right?



I think my output shaft slid too far back.... this doesn't look right to me. I can't get the d18 back on.



I bought the d18 and T90 combo. It was rebuilt and sitting in a shop locally



Sent from my C771 using Tapatalk 2

 

I THINK I see a problem...the same problem I had.
It LOOKS like your locking plate is not trimmed so that it'll fit in the recess of the D18...

ETA: I don't know about the shaft.

 

The I just took the 18 off this weekend so the locking plate shouldn't be an issue. It went together fine last time I fooled with it.

Sent from my C771 using Tapatalk 2

 

If you just took it off this past weekend there's no reason why it shouldn't go back together just fine. The gasket isn't the issue. You might try starting the bolts & slowly tightening them while jiggling/fitting the transfer on.

 

I'm just concerned about my output shaft looking like it's pushed out. I tried pushing it back in but it's not going

Sent from my C771 using Tapatalk 2

 

Geeze...I'm such a dip...& I seem to have a problem with internet pictures & reading comprehension... maybe it's just old age taking its toll.
The only manual transmission I've had to deal with in the past 35 years or so was my T86, which I sent to Herm for a rebuild with T90 guts.
Looking closer at the pictures, there is something definitely wrong with your tranny IF it is supposed to look anything like a T86 back at the rear bearing retainer. Mine was flush with the rear of the case IIRC.