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MASK MOUNTED REGULATOR REPAIR

Removing the Inlet Screen, Internal Sleeve, O-Ring,
Power Stage Spool, and Power Stage Diaphragm

Do not press on the lever assembly. Do not unthread
the base and lever assembly or the divider skirt from
the valve core. This could damage the bottom lever
pad and affect operation.

1. Place a 1" wrench on the hex flats to secure base and

lever assembly.

2. Turn the sleeve

counter-clockwise to
unthread it from
base/lever.

3. Remove and discard

the internal sleeve O-
ring.

4. Inspect the inlet screen and replace it if it is damaged.

5. Remove the power

stage diaphragm and
discard it. Use the plas-
tic stick if necessary to
remove the diaphragm.

Installing the Inlet Screen, Sleeve O-Ring, Power
Stage Spool, and Power Stage Diaphragm

1. Clean any debris from inside the valve core before

reassembly.

2. Place a new diaphragm

into the valve and lever
assembly. Ensure the
flat side of the
diaphragm faces up
and that the diaphragm
rib nests into the
matching groove inside
the assembly. Use the
plastic stick if neces-
sary to be sure the
diaphragm is seated.

3. Place the power stage

spool into the valve
assembly with the ring
of holes against the
power stage
diaphragm.

4. Center the screen on the power stage spool. Ensure

the open end of the screen faces up.

5. Place a thin film of

Christo-Lube lubricant
on a new O-ring and
install it in the groove
in the sleeve.

6. Place one drop of

Loctite* #222 adhesive
on the large threads of
the sleeve.

Note:

Ensure the sleeve O-ring stays in its groove on the

end of the sleeve during reassembly.

Do not grasp the lever base during the next step. Hold
the valve body hex, not the base and lever assembly.

5

TAL 4011 (L) Rev. 3 - 817081

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Summary of Contents for PremAire Cadet 15M

Page 1: ...g hours TAL 4011 L Rev 3 MSA 2004 Prnt Spec 10000005389 A Mat 817081 Doc 817081 This manual including Warnings and Cautions inside must be read and fol lowed carefully by all persons who will use or m...

Page 2: ...um NOTE 4 When installing O rings over threads use trans parent tape a thin piece of paper or other thread protec tor to avoid damage to the O ring NOTE 5 Pipe sealing tape is used on fittings with ta...

Page 3: ...ring 3 Pull the stop spring out of the groove at the bottom of the shut off hub 4 Remove any RTV Adhesive from the shut off hub 5 Fit the large spanner wrench on the socket driver Unthread the shut of...

Page 4: ...t the swivel block end 1 Remove the end cap diaphragm and spring see Removing the Shut off Cap Spring and Stop Spring 2 Disconnect the unpressurized mask mounted regulator from the facepiece 3 Using a...

Page 5: ...Diaphragm 1 Clean any debris from inside the valve core before reassembly 2 Place a new diaphragm into the valve and lever assembly Ensure the flat side of the diaphragm faces up and that the diaphra...

Page 6: ...ever 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...

Page 7: ...cess RTV Adhesive from the threads of the thrust ring 9 Place one drop of RTV Adhesive on the threads of the shut off hub above the adjusting screw 10 Thread the thrust ring into the shut off hub unti...

Page 8: ...ed Note If the insert shows signs of wear or damage it must be replaced Installing the Insert 1 Using the valve stem install the insert in the valve body Thread the stem clockwise until the insert is...

Page 9: ...Body 1 To remove the cylinder inlet body from the cylinder Before repairing the cylinder valve all air must be bled from the cylinder Open the cylinder valve handwheel 1 2 turn and leave it open unti...

Page 10: ...oid possible hearing damage Do not attempt to repair the valve if pressure is shown on the cylinder pressure gauge If pressure cannot be relieved by opening the cylinder valve handwheel the cylinder m...

Page 11: ...rn the whistle counter clock wise 2 Unthread the alarm from the High Pressure Regulator Installing the Low Pressure Alarm Whistle 1 Insure that O ring is seated and not damaged 2 Apply a thin film of...

Page 12: ...4 socket remove the four 4 screwpins from the cylinder valve 2 Pull firmly on the high pressure hose to remove it from the cylinder valve body 3 Remove the old O ring and back up ring Be careful not t...

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