MASK MOUNTED REGULATOR REPAIR
7. Place a 1" wrench on the hex flats of the base and
lever assembly. Thread the sleeve into the valve and
lever assembly clockwise hand-tight.
Installing the Valve Core
1. Place transparent tape over the exposed threads of
the valve core to protect the new external O-ring.
2. Place a thin film of Christo-Lube lubricant on the new
external sleeve O-ring.
3. Roll the O-ring in place
in the groove closest to
the valve body.
4. Remove all tape.
5. Line up the wide rec-
tangular slot in the
valve body hex with the
lug inside the regulator
housing.
Do not push on the top lever while installing the valve
core. This could damage the pad seal and affect oper-
ation. Place your fingertips on the two shoulders on
either side of the lever arms.
6. With the slot and lug
lined up, press the
valve core gently into
the housing.
Resistance will develop
as the O-ring is forced
into its seat.
Do not turn the valve and lever assembly relative to
the valve core. This could damage the pad seal and
affect operation.
7. Place one drop of adhesive on the exposed valve core
threads. Do not permit thread sealant to contact the
regulator housing.
8. Re-install the knob, swivel block, and hose on the reg-
ulator housing and tighten using a 1" wrench. (see
Removing the Valve Core)
9. Re-install diaphragm, spring, shut-off hub, and the
adjusting screw in the regulator housing. (see
Adjusting the Static Pressure Setting)
Do not press on the lever assembly or unthread the
valve and lever assembly from the valve body. This
could affect operation.
10. Perform the Static Pressure Test and the Flow Test to
check the final assembly.
6
TAL 4011 (L) Rev. 3 - 817081
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