Shimming a Fairey Overdrive

Hi All,
Finally getting my 2a back together after a Gearbox, Transfer and Engine Rebuild (ongoing) and was finishing off the rebuild of the Overdrive. Had a look at the mainshaft endfloat and it seemed too much for me even though no figures are published (or not found) but I thought 0.2-0.3mm would be ok (it had 0.6). So it looks as if I need a new shim or 2.
The question is where to shim. The original shim was inside the bearing carrier and was around 0.3mm but seemed to sit below the carrier so had limited effect (it seemed to be shimming the bearing spacer tube). It is around 28mm in outside diameter. OR can you shim under the thrust washer directly (effectivley increasing the thrust washer thickness) - see photos as this seems to work but if anyone has any real world experience here to share it would be appreciated. I have made the larger shim out of Speedo housing shim. So does it matter where to shim???

Page 30 in the attached covers the shim.
Nicks landrover site used to have a good guide to rebuild also.

Blackburn said:

Page 30 in the attached covers the shim.
Nicks landrover site used to have a good guide to rebuild also.

Click to expand...

Hi and thanks for the download. I have seen that but I cannot work out on the first diagram if that is a shim or one of the thrust washers so still a little confused. What I didn't realise was that is appears that in the diagram there is what appears to be a PTO take off gear and on mine there is not. Were 2 versions made??? Will have a search through Nicks LR cheers

Re PTO, yes 2 versions are about. The idea was to enable a PTO on a OD but it never got done.
Shims must be supported so they go between thrust bearing and race.

rob1miles said:

Re PTO, yes 2 versions are about. The idea was to enable a PTO on a OD but it never got done.
Shims must be supported so they go between thrust bearing and race.

Click to expand...

Thanks for that, Interesting re the PTO. Seems it would have been maybe a step too far!!!