piston with finger).
d. Disassembly of RE-6 Relay Emergency Valve (fig.
(14) Remove emergency piston O-ring.
(1) Mark cover and body so that upon assembly
Remove O-ring from inlet-exhaust valve
cover will he in proper position in relation to body.
(2) Remove three cap screw, lockwashers, and
(16) Remove retaining ring from inlet-exhaust valve
(3) Remove check valve, check valve spring,
(17) Remove valve guide, valve spring, and inlet
exhaust cover, O-rings, and emergency piston spring.
and exhaust valve retainer.
(4) Remove exhaust diaphragm screw,
(18) Remove O-ring from inside of valve guide.
diaphragm and diaphragm washer.
(19) Remove inlet and exhaust valve from body.
(This is a boot type valve and will slip off body).
Remove four cap screws, lockwasher from
e. Cleaning and Inspection of RE-6 Relay Emergency
(6) Remove cover, relay piston assembly, and relay
piston return spring.
(1) Wash all metal parts in cleaning solvent and dry
(7) Remove relay piston O-ring.
(2) Inspect parts for wear or damage.
(8) Remove exhaust valve seat from piston.
(3) Check all bores for out of round condition.
(9) Remove sealing ring.
(4) Inspect all rubber parts for wear or deterioration.
(10) With thumb, apply pressure downward on
(emergency piston and remove emergency piston and
(5) Inspect springs for breaks or deterioration.
inlet-exhaust valve assembly.
(6) Inspect valve seats for nicks or burrs.
(11) Remove filter assembly from emergency port.
(7) Inspect filter and either clean or replace.
(12) Using tru-arc pliers, remove large retaining ring
from bottom of emergency piston assembly.
(8) Replace any parts which are found to be no
longer serviceable by these inspections.
(13) Remove inlet and exhaust valve assembly
from emergency piston. (Valve assembly can be easily
dislodged by pushing through small end of emergency