How to disassemble a Topeak JoeBlow Sport II OK... I searched everywhere, could not find  a definitive answer.

I've had the pump a few years and use it a lot on several bikes.   I like my pump and want it to last as long as possible and I'd like to clean and re-grease its innards as a preventive measure,  the o-ring specifically but I cannot get to it.... I'm afraid I'll break it 

Can anyone tell me how to get the cap off without breaking it?  or is there another way?  It's a JoeBlow Sport II (the yellow one)

Thanks in advance
Well...  I tinkered carefully and was able to remove the top cap without breaking anything.

1) There are 2 small holes on the sides, right above the hose holder clip.  You must push in the tab that keeps the top cap secure using a pointy tool and turn the cap slowly clockwise. Here you see it with the tabs disengaged and showing the holes the tabs click into.



2) In the second image, you can see the tabs that hold the cap secure.


3) Then I was able to clean the the inside and clean/relube the O-ring (I used Slickoleum because  it's O-ring friendly... I use it to service my front suspension).


I think this pump is taken apart pretty much like any other cheap to midrange floor pump after all.

I hope this can help someone.