M1078 A1 transfer case

[Skyhawk13205]

The SN cutoff for the bad bearings is pre 6510072174, SN for the composite thrust washer is post SN 6511014364.
The Allison documents that are applicable are

SIL 17-WT-11
SIL 29-WT-96

 

[GCecchetto]

The SN cutoff for the bad bearings is pre 6510072174, SN for the composite thrust washer is post SN 6511014364.
The Allison documents that are applicable are

SIL 17-WT-11
SIL 29-WT-96

So, my trans serial number 6510837456 which falls in between those two numbers. So, does that mean I don't have the bad bearing but also not the new composite washer?

 

[Ronmar]

I believe so. They replaced the original spec roller thrust-bearing with a different roller thrust-bearing, then they replaced that second bearing with the current spec thrust washer...

 

[MatthewWBailey]

Yep, almost 3x…

I acquired mine today from peri parts. $355 with $20 shipping. Yet another project on the next overhaul list. Looks like a piece of thermoset plastic