Hi again all,
I've identified the faucet as a Grohe (how do you pronounce that ??) model
31771 or 31735. Thanks to Casino Knight for identifying the brand. Reed, thanks
for the exploded view, but that's a bathroom faucet. Jeff, you're right, the
fluted part is a wobble preventer. The nut is an odd size. 11/16 is slightly too
big, 5/8 is too small, 17mm is too big, and 16mm is too small. I've been trying
with the 11/16 wrench, but it won't budge. I have a few pipe wrenches that are
longer than the 11/16 wrench--I'll give them a try. The problem is that I don't
know if they are a regular or backwards thread. I don't want to push too hard
and either strip or snap the housing. I've flooded it with PB Blaster for the
last 2 days with no success. I guess that Grohe is not a popular brand, and
nobody has any info on them--I've never heard of the brand before. Has anyone
ever seen backwards threaded cartridges before ???
=======================================================Remove the ZZZ from my E-mail address to send me E-mail.