back-filling kit / adapter through the drain plug

[kellogs]

For those situations when the filler plug is not very accessible. Basically it would be a plug with a hole + tight gasket in the middle through which a thin hose could be inserted in order to pump oil back into the transfer case after having drained it first. Do these things exist ?

 

[Nukeman7]

Depending on the drain plug size and thread configuration, something like this tool would work. However, you will lose some of the fluid when removing the adapter and reinstalling the drain plug.

Fluid Transfer Fill Pump

 

[55hambone]

Does your vehicle have a dipstick? My Toyota's don't, you pump fluid in through the fill plug until it starts dribbling out. Then you have the proper level. Too much or too little fluid is not a good thing.

 

[D60]

For those situations when the filler plug is not very accessible. Basically it would be a plug with a hole + tight gasket in the middle through which a thin hose could be inserted in order to pump oil back into the transfer case after having drained it first. Do these things exist ?

It's industry standard on some transmissions, known as bottom fill. The Amazon kit above is a copy of the Mityvac and is what you'd use -- or at least where the budget would begin and then prices $$ go up from there

 

[JHZR2]

It's industry standard on some transmissions, known as bottom fill. The Amazon kit above is a copy of the Mityvac and is what you'd use -- or at least where the budget would begin and then prices $$ go up from there

But those have a standpipe in them and a specific fluid level setting protocol.