What do I do about the black rubber coating that is coming off of the handle on my Grohe kitchen faucet?

SOURCE: trying to remove handles on grohe 31054000

I couldn't find the number you have on the Grohe website so I have included a link to their website. Just find your model and it will give you many different options for manuals. Hopefully this will give you the information you are needing.

http://www.grohecatalog.com/category/1/

SOURCE: Grohe ladylux plus kitchen faucet leaks from

Yes,it sounds like you have to replace the hose.Follow the braided hose under your sink until you come across a yellow and black fitting . it is comparable to an air hose fitting quick disconnection. once that is pulled from the sink port,unscrew the spray head and pull the ose through the faucet body from above the sink

SOURCE: Kitchen Faucet is loose on granite counter

http://www.needplumbingsupplies.com/Grohe-Kitchen-Sink-Faucets.asp?id=13758

This link has a spec sheet that will give you an view of under neath counter top. There should be a nut that you can tighten it up with.

SOURCE: Hi my Grohe kitchen sink

from underneath,may be really tricky to get a grip on you might need a basin wrench.

SOURCE: We are trying to replace a Grohe kitchen pull out

The universal hose will not work on certain model faucets,best bet contact manufacturer and they may provide you a new hose at little or no cost if you tell them you will put a different brand faucet in.

Testimonial: "Thanks, that is something I didn't consider. After much wrangling, he did get it loose and re-threaded it. It seems OK for now. Thank you for replyi"