washers do not give long service, particularly in hot-
4. If the brass screw is in poor condition, replace it
with a new one (view A, fig. 5-46).
5. Examine the valve seat and repair or replace it
with a new one (view B, fig. 5-46), if necessary, before
replacing the spindle; otherwise, a new washer provides
adequate service for only a short time.
6. Reface or ream solid seats (view C, fig. 5-46)
with a standard reseating tool consisting of a cutter, a
stem, and a handle. Rotate the tool with the cutter
centered and held firmly on the worn or scored seat.
Take care to prevent excessive reaming. Remove all
grinding residue before reassembly. A solid seat can be
replaced with a renewable seat by tapping a standard
thread into the old solid seat and inserting a renewable
7. Remove renewable seats with a regular seat-
removing tool or Allen wrench. When the seat is frozen
to the body, apply penetrating oil to loosen it. Faucet
seats can usually be tapped, reseated, or replaced
without removing the faucet from its fixture.
8. To stop leakage at the bonnet, replace the stem
packing and the bib gasket.
Occasionally, you may find ball-bearing washer
holders installed in faucets at some activities. The ball
bearings between the stem and washer holder permit
movement of the washer free of the movement of the
stem. This allows the washer to stop its rotation on the
slightest contact with the seat, thereby reducing the
frictional wear of the washer.
Shower heads that supply an uneven or distorted
stream can usually be repaired by removing the
perforated faceplate and cleaning the mineral deposits
from the back of the plate with fine sandpaper or steel
wool. You can open clogged holes with a coarse needle
or compressed air.
Q18. Which part of a faucet requires the most frequent
maintenance and repair?
Q19. When a stem washer wears out, you replace it
with what type of washer?
SEWER MAINTENANCE AND REPAIR
LEARNING OBJECTIVE: Recognize methods
for maintenance and repair of sewer systems.
When you are working with sewers, most of your
troubles are with stoppages and breaks. A common
cause of a stoppage in a sewer system is tree roots.
Figure 5-46.Inspecting, removing, and refacing faucet seats.