Re: [Amc-list] T-96... again!

[Tom Jennings <tomj@xxxxxxx>]

Wrambler242@xxxxxxxxxxx wrote:
> Oh, man that sucks...

Oh yeah, no kidding!

I did think of one thing external that could ruin the pocket bearings on 
an otherwise correctly assembled transmission.

If the bellhousing wasn't concentric with the pilot bearing, it would 
cock the input shaft, so that it wasn't perfectly concentric, pilot to 
clutch shaft bearing to pocket bearing to output shaft bearing. If you 
were to (for example) press upward on the tip of the input shaft while 
running, the shaft would pivot on the big bearing, pressing DOWN on the 
pocket bearings which are not designed for any side load.

But that would mean that the trans locating hole wasn't concentric with 
the pilot, which makes no sense here. It's the trans and bell that were 
in the car. Both times I installed the transmission, lifting it by hand 
into the bell, it slipped right in, smoothly, perfectly with no force 
required. Up nice and flat on the back of the bell, no gap. Bolts went 
in by hand then torqued (cept could reach one of the uppers of course 
that went in with 3 feet of 3/8" extensions and a swivel socket). I 
checked overall depth to make sure the tip of the input shaft wasn't 
bottoming (which would have made no sense, either.)

Clutch is smooth, with the tiniest shudder when the motor speed is under 
1000 rpm and I'm unclutching "fast"; 1000 rpm, or feathered clutch, it's 
perfect. Absolutely silent, the only noise was a SSSSHH sandpapery sound 
on engagement for the first days of the clutch surface wear in. 
Completely perfect clutch operation at all times, zero pedal feel, 
vibration, noise, etc.

Maybe it's a one-time fluke, maybe I wasn't paying attention and didn't 
de-clutch enough (just finished a long drive home) but to be honest, I 
know it's not that. I'll double-check fluid, but it's not dripped a drop 
since install.

I'm certain I'll have my answer in a week or two! It'll never happen 
again or become regular until it's unshiftable.

Not even sure how I'd check for problems in the bell and clutch area. 
Misalignment is the only thing I could think of that could possibly do 
this. I could have screwed up the first time, but the second time, man I 
not only double-checked all clearances, I went by the drawings, and 
determined where play ought to be and why, and where it should not be, 
and everything cross-checked 100%. I know it's assembled right this 
time! They're not that fussy anyways, I mean really, too much/little 
play won't eat the pocket bearings and grind the hardened friction ring 
cones!

If it does go bad, I have a hard problem to locate. That T-14 will go in 
and I'll real with finding a rear axle to bring the overall ratio up. OD 
will be sorely missed.
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