
SERVICE
1. Shut off water supply to valve.
2. Remove handle plug button and
handle (see gure 9).
3. Remove dial (T3-29) by prying up
from the slot located at 6 o’clock and
then pry up around the clock until
dial is loose. Remove escutcheon [T3-
27(D)] by removing escutcheon screws
(T3-28). Remove all remaining trim.
4. Open valve to about warm position
and unscrew cap (T-12A). Warning:
Failure to do this will damage cap and
spindle. Spindle assembly (TA-10) will
be removed with cap. Leave packing
nut (T-17) in place while unscrewing
cap to avoid distortion.
5. Ordinary service to eliminate dripping
or not shutting off requires only the
replacement of parts supplied in washer
and gasket kit (TA-9). Hold spindle
with (T3-31S) handle while removing
hot washer screw and cold washer
retainer (remove retainer with channel
lock pliers).
6. Inspect top surfaces of hot and cold
seats and replace if necessary. Impor-
tant: When replacing hot and cold
seats, always replace both seats. Even if
only one seat appears worn, both seats
must be replaced. Use part No. (TA-4).
After long years of service, if spindle
is very loose in cold seat, replace with
part no. (TA-4). Use seat removal tool
[T-35(A,B)] for removal and replacement
of (TA-4). If seats are difcult to remove
and tool shifts damaging notches, relo-
cate tool in second position of notches.
Tighten both seats to 15 foot pounds
of torque.
7. The perforated end of the (TA-10) spin-
dle assembly houses the balancing
piston which is the heart of this pres-
sure balancing valve. The piston should
be free to move back and forth and
should click when the spindle assembly
is shaken. If deposits block this action,
tap the handle end of the spindle
against a solid object to free the piston.
Soaking in household vinegar will help
free foreign matter. If this does not free
piston, replace (TA-10) spindle assem-
bly. DO NOT TAMPER WITH PERFO-
RATED CYLINDER ON THE SPINDLE
ASSEMBLY OR ATTEMPT REMOVAL
OF THE PISTON.
8. Reassemble, reversing above proce-
dure, be sure spindle assembly is
drawn close to the cap before screwing
cap back into valve. Warning: Failure to
do this will damage cap and spindle.
9. Use only Symmons Genuine Repair
Parts. FaIlure to do so will void all
warranties AND IMPAIR PROPER OPERA-
TION OF YOUR VALVE.
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TROUBLE SHOOTING CHART
SYMMONS INDUSTRIES, INC.
31 Brooks Drive, Braintree, MA 02184-3804
TEL: 1-800-SYMMONS, (781) 848-2250 FAX: 1-800-961-9621, (781) 843-3849
Website: www.symmons.com
© 1998-2002 Symmons Industries, Inc. Printed in U.S.A. REV 4/02
ZV-336 FOLD 10M 4/02
ZV-335 3 HOLE