I have noticed considerabley more transfercase whine from my series. I drive a series 3 2.5 nad with a SIII gearbox (suffix b), the early model roverdrive installed as well. I do not recall what suffix the transferbox is but I have never rebuilt it, and never run it dry.
After the tcase warms up a bit it whines in all gears with the overdrive engaged or disengaged. The whine is only present under load and when coasting out of gear or simply clutch down it is so faint as to be negligible. Driving to an event through heavy traffic and 5 hours of rush hour on 95 the overdrive leaked and it ran low, causing the whining to increase dramatically. I stopped to let it cool and add some gear oil before continuing on. Driving back this weekend I stopped to make sure I had plenty of oil, but even with that the whining was fatiguing even with earplugs in. I have my tuffy out and the center seatbox panel is loose and on the highway I can lift the cover and you can hear the whine from the tcase. I am pretty sure it is not the gearbox or differentials. This whine was present (just not as loud) when I ran the up to the winter romp without an overdrive one year. When I added the roverdrive I replaced the tcase sump with their finned al cover and the old gear oil was a bit dark with some small flecks of metal but nothing outrageous, and certainly no large chunks of anything. It is bad enough at this point that it needs to be addressed as I would not put anyone in their now for a long period without decent ear protection.
Before I start tearing into this can anyone think of other methods to further test and isolate the source of the whine? Also any and all advice is appreciated. Speak up though, my ears are still ringing.
Regards,
Jason Wachtel
After the tcase warms up a bit it whines in all gears with the overdrive engaged or disengaged. The whine is only present under load and when coasting out of gear or simply clutch down it is so faint as to be negligible. Driving to an event through heavy traffic and 5 hours of rush hour on 95 the overdrive leaked and it ran low, causing the whining to increase dramatically. I stopped to let it cool and add some gear oil before continuing on. Driving back this weekend I stopped to make sure I had plenty of oil, but even with that the whining was fatiguing even with earplugs in. I have my tuffy out and the center seatbox panel is loose and on the highway I can lift the cover and you can hear the whine from the tcase. I am pretty sure it is not the gearbox or differentials. This whine was present (just not as loud) when I ran the up to the winter romp without an overdrive one year. When I added the roverdrive I replaced the tcase sump with their finned al cover and the old gear oil was a bit dark with some small flecks of metal but nothing outrageous, and certainly no large chunks of anything. It is bad enough at this point that it needs to be addressed as I would not put anyone in their now for a long period without decent ear protection.
Before I start tearing into this can anyone think of other methods to further test and isolate the source of the whine? Also any and all advice is appreciated. Speak up though, my ears are still ringing.
Regards,
Jason Wachtel
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