Re: 1946 transmission

Posted by Tim Cole On 2013/4/3 22:37:00

These synchro problems are relatively new as years ago the biggest problem was the rotten column shift.

That snubber story is really neat. Unfortunately the Packard manual has virtually no troubleshooting items.

I stopped changing transmission oil because of shifting problems cropping up with the new oil. I never had a shift problem crop up after a clutch job so the problem is most likely internal.

End play should not be a problem because the spec can be set using shim stock rather than selective snap rings. This applies to OD transmissions only.

Obviously I don't have one here and analysis is beyond the typical flat rate trans shop job. Where I would start is to take those synchros to the bench and do the standard palm test for synchros using different oils.

If a new snynchro doesn't pass then the gears themselves may be wearing out.