Help! Another Nexus 5 hub lubrication question - hopefully the last!

[danfoto]

Sorry chaps, but the guts of my hub have now been soaking in ATF for most of the day (with occasional agitation) and the plan is to let it drip off overnight so I can reassemble tomorrow. In anticipation of this I've been checking online the oiling procedure and I'm a bit puzzled by one aspect of it.

What seems to be the best YT video shows the oiling done in a special Shimano pot, which is filled up to a depth of 95mm before the internals are dunked therein for 90 seconds. That depth of oil in that pot seems to soak it just about up to the bottom of the small planet gears that protrude outside the body. So the plan is to simply plonk my hub internals in my tub drive-end uppermost and fill it so the oil comes up to that same level.

Any ideas why the level is seemingly so critical?

And why that specific 90 seconds?

 

[saneagle]

Sorry chaps, but the guts of my hub have now been soaking in ATF for most of the day (with occasional agitation) and the plan is to let it drip off overnight so I can reassemble tomorrow. In anticipation of this I've been checking online the oiling procedure and I'm a bit puzzled by one aspect of it.

What seems to be the best YT video shows the oiling done in a special Shimano pot, which is filled up to a depth of 95mm before the internals are dunked therein for 90 seconds. That depth of oil in that pot seems to soak it just about up to the bottom of the small planet gears that protrude outside the body. So the plan is to simply plonk my hub internals in my tub drive-end uppermost and fill it so the oil comes up to that same level.

Any ideas why the level is seemingly so critical?

And why that specific 90 seconds?

Is the 90 seconds minimum, maximum or exact?

 

[Nealh]

The 90 seconds is to ensure the new oil dunk reaches all working parts so sounds like a minimum dunk time.
A 60 second drip dry then refit into the hub shell , it then appears that no further adding of lube oil is required.

One has to be careful not to add extra or too much oil as it will likely leak out from the seals , one certainly wouldn't want it contaminating the brake.

The Alfine 11 is an oil lubed unit and had issues with leakage and reliability.

 

[danfoto]

I guessed so, but thanks for the confirmation.

 

[Nealh]

The Alfine 11 uses about 25ml of oil to fill /lube after a drain/clean.

Nexus 5 inter is different so follow the procedure of dunk for 90secs drip dry and reit.
The oil left following the dunk and drip dry should be enough to keep it lubed .

 

[saneagle]

and put some grease on the exposed outer race.

 

[danfoto]

and put some grease on the exposed outer race.

Already done