[DML] Re: Questions on automatic transmissions

["David Teitelbaum" <jtrealty@xxxxxxxxxxx>]

I forgot to mention you should check that the vacuum line to the
vacuum modulater is hooked up and not leaking. The vacuum modulater
sets the line pressure and lowers it for shifting so the shifts are a
little softer. Actually hard, firm shifts are better for the clutch
packs, as long as they are not too abrupt. If they are really hard
then you could overstress mechanical parts like the drums and shafts.
That is what the modulater is supposed to do, ease you into another
gear. The problem with smooth shifts is that you are really in 2 gears
at once with the clutch packs slipping. This causes heat and wear on
the friction plates in the clutch packs. You should do a through
external visual inspection and go over all the external adjustments as
per the Workshop Manual. Don't forget, on the automatic there is a
separate resovoir for the final drive. You have to remove the level
plug on the side of the transmission to check the level in the final
drive. It gets 85-90W gear oil, NOT TRANSMISSION FLUID! 
David Teitelbaum
vin 10757


--- In dmcnews@xxxxxxxxxxxxxxx, "Harold McElraft" <hmcelraft@xxxx> wrote:
> 
> 
> An accurately setup auto shifts nice and smooth hot or cold - in 
> really cold weather the shifts are a little smoother - almost 
> unnoticeable - warmed up - noticeable but smooth - no banging or 
> jerking. I notice the change in engine sound more than anything 
> along with more getup, especially at WOT. Never notice down shifting 









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