Drain it at the bottom plug (there are two, gear box magnetic and diff magnetic), fill through the dip stick hole or back up lights switch with a longer funnel.Time to change it. Drop the fluid from the bottom or suck it out from the top at QuickLube (I'll supply the fluid.) Will it take the same amount of fluid to fill it up either way ? .48 gallons ?
Yeah I have to admit that is where I fill mine from too.I speed up the process. Draining out through differential case drain plug located at lowest point will drain whole tranny. You can pull tranny case drain plug to check magnet too for idea of how it is wearing inside but don't need to to drain fluid.
As for filling 12v and 24v 5-speeds there is no need to build a pencil sized funnel tube to fill it through dip stick hole.
On 12v pull fill plug near clutch arm pivot point and on 24v disconnect and remove back up light switch from same hole and fill it much faster and easier.
I use an automatic tranny funnel to fill 5-speed trannys at clutch arm pivot point area.
It takes 2 quarts of fluid. I use Dextron ATF (automatic transmission fluid) as that is specified type.
See picture of 24v tranny to see where back up light switch is located. I fill both 24v and 12v trannys at this port.
I think reverse back up light switch moved on 24v because reverse lock out pawl/cable was installed in hole used for reverse switch on 12v models.Hey, so my instructs were good for the newer models afterall. I just didn't realize the backup switch was moved to the filler plug hole (AKA: shift rod lockout pawl insertion hole, if you are doing a rebuild ) on the newer models, interesting, wonder why they decided to move it?
Thanks for that - yes, the one thing I hate most is the first few 'crunches' in my Uno Turbo, which has a similar gear oil recommended. The oil that I settled on for that was a 75W gear oil plus the Nulon additive.I have driven mine with gear oil and with ATF and prefer the ATF (because I have had two different trannys in the car, with the original one back in now). You don't get the hard shift when cold issue, with ATF. The gear oil needs a little warmup time to start shifting nicely especially in the winter but to some degree even on a summer morning. The ATF just makes shifts a bit lighter in action, gear oil a bit heavier in action, no surprise there, really. But use whatever makes you feel most comfortable using.