This is the fourth page on how to repair a
Gerber tub and shower faucet with two or three
handles. to go back to page one click the link
Once again take note of this washer,
you need one for each stem, but you
don't want to have 2 of them on any stem
it's easy to miss look closely.
To replace the washer remove the
screw replace the washer with the
correct size and tighten the screw. When
reinstalling the new or old stem make
sure the stem is in the open position,
the base where the washer screws on
should be up against the stem body.
Gerber stems use a 1/4" flat washer.
if the head of the screw breaks off, it
will be easer to replace the whole stem,
then to take the time to drill and tap
the old stem.
Be careful not to over tighten the
stem if you do you will break the
threads off in the faucet body. don't
forget to grease the threads.
The diverter stem is different from
the hot and cold Gerber stems it has the
same 1/4" washer but also has another
rubber boot that causes the water to go
up or down if this boot is damaged you
will get water coming out of the spout
and the shower head at the same time.
This is the washer in the diverter
stem of the Gerber faucet, this stem
makes the water go to the shower head or
to the tub spout, it this washer is
damaged you will get water coming out of
the tub spout and the shower head at the
Once again grease the threads and
take note of the plastic washer and do
not over tighten
Now you will think that a new stem
comes with the packing nut set just
right, it does not, it comes just hand
tight and needs to be tightened.