Allison 3000 Transmission Pan Jacking Bolts

[Delirium]

Hey y'all, working on getting at the guts of the MD3070PT in my M1078A1 for a thorough run-through and casual glitter hunting. The TMs and TS2973EN have been great so far, but there's one thing hanging me up as of this past weekend: The jacking bolt threads on the transmission pan. They are mentioned in 34-2 on page 7-71 and nowhere else, not even in Allison's documentation. Anyone know what size bolt is needed for those? I've gone through my bucket-o-bolts and can't seem to find anything that works, and I'd like to avoid getting physical with the pan and marring the separator plate or worse.

 

[GeneralDisorder]

Typically in such cases they are designed to use the control valve body assembly mounting bolts (once removed) as the jacking bolts. I don't know that for a fact but that is convention in the industry so I HIGHLY suspect that is the case here.

That's not a pan. It's a control valve body assembly that happens to double as a sump. Be prepared as it is VERY heavy.

 

[Delirium]

@GeneralDisorder 10-4, I'll size those up and give that a try. And understood about the weight of the 'pan', I read the warnings in the TM and I've got a transmission jack hanging out underneath the truck right now. I left 5 mounting bolts in with about ~1/4 inch slack to catch it once it loosens, then will raise the jack up to it before removing them.