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Sorry for not clarifying how I filled 3 quarts into the transmission in my previous post. Many of the trannies that I see have a stripped fill plug, so I usually just use a hand pump and fill from the bottom drain port. To get a tight seal, I take a section of closed cell pipe insulation foam (used for insulating water pipes in home plumbing) and make a tight wrap of it around the pump tube about 4 inches from the end (foam is held tight to the hose with Duct Tape). With an assistant working the pump, I hold the pump hose against the drain hole until it's full and then swap the hose for the plug. A little bit leaks out (have an extra quart standing by to try pumping in if you leak a lot), the duct tape adhesive disolves after a few minutes, but the job is done and it works well.
I'd use the backup light switch if my hands weren't so big. It's the same reason that I dread doing a head gasket on a Turbo car, a lot of the turbo hardware bolts are not easily accessed by a big handed guy like me.
Lastly, if you have the transmission out of the car for any reason, I'd advise changing out the tailshaft seal on the M47, but don't go out of your way to do it for routine service. If you're curious how well the rear seal does with the mileage it has on it, try holding the tranny vertically (tail down) and see how much oil comes out when it's standing on end. -You might be supprized. IIRC, there is no replaceable bushing on these trannies unlike their automatic cousins, so a new oil seal is the best we can do for maintenance here. Don't worry, 3 quarts isn't going to be high enough to leak out of a worn tailshaft seal unless you're parking on some VERY steep hills (like 35 to 40 degrees).
God bless,
Fitz Fitzgerald.
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