transfer case differences

[enen]

I'm been benefiting from the posts here and thought id add my 2 cents. This may have been covered before.

I have a gearbox with no vin, so probably a series 3?

The transfer case also has no vin , so probably a 2A?

I have a series 3 transfer case modified for the Ashcroft high ratio gears

I removed the transfer case and installed the modified case .

The gearbox seized up when i tightened the nut on the mainshaft

Turned out the oil slinger was binding on the new case as the new case has a smaller hole.

I guess the series 3 transfer case has a smaller oil slinger?

 

[Snagger]

I don't think so - as far as I know, there is absolutely no change between the SII suffix C unit until the end of SIII production other than the use of metric threads on the last couple of years (my 82 unit had metric threads).  More likely is that the slinger has been slightly bent by being levered off the main shaft, as happened to mine, needing just a small fettling to fit correctly back inside the aperture.  The dished part of the slinger does slide up and down its central collar; it's not brazed or welded on.

[enen]

i just checked

My original transfer case has an opening of approx 4.2"

The series 3(??) case has an opening of 3.4"

 

/so im unsure what i really am working with

 

 

[Snagger]

Could one of them be a 1-Ton transfer box casing?

[enen]

it has a serial number

Would that be a clue?

36132037D