TB
5-4220-200-12-1
Chapter 3 OPERATORS MAINTENANCE INSTRUCTIONS
Section I. MAINTENANCE PROCEDURES
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GENERAL.
This Section describes the preventive maintenance to be performed by the diver using the equipment. It contains
instructions for conducting weekly preventive maintenance including: inspectron, testing, cleaning and servicing the
equipment as prescribed in the Maintenance Allocation Chart of Appendix D.
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WEEKLY PREVENTIVE MAINTENANCE.
Refer to Table 3-1 for "Weekly Preventive Maintenance Procedures."
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TROUBLESHOOTING PROCEDURES.
The operator (diver) will utilize applicable parts of the "Troubleshooting Procedures" listed in Table 4-3, Chapter 4
for functions prescribed by the Maintenance Allocation Chart, Appendix D.
CLEANING AND SERVICING.
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a.
Demand Regulator. After each dive rinse off the entire regulator with fresh water. With cap (3) fig. 4-l
in place allow water to flow inside the mouthpiece (21) fig. 4-2 and out the exhaust tube (9). Do not push
the purge button (2) while rinsing or water will enter the 2nd stage valve (15) and flow into the 1st stage
regulator. Also, flow water inside the box top (5) through the side holes to flush out any entrapped sand
or dirt. After washing, polish the chrome with a rough towel.
b.
Twin Cylinder Valve Manifold. Clean the valve assembly with fresh water after use. Use a soft, clean cloth
to dry all surfaces of the valve. Open the ON/OFF knob slightly, allowing air to blow out any remaining
water from the outlet pot-t. Periodically lubricate the exposed O-Ring around the filling port with silicone
grease.
(1)
Inspect this O-Ring between dives for nicks. cuts or imbedded sand and dirt.
(2)
With the cylinders depressurized periodically inspect the two coupling nuts (P/N 0636) holding the
manifold assembly together. These nuts must be wrench tight to prevent leakage. Examine the re-
serve pull-rod and straighten any bending that occurred during use or transport.
c.
Twin Cylinder and Harness. Wash the outside of the cylinders and twin harness assembly with fresh water
after use. Periodically inspect figure eight band clamp bolts for tightness. Bent reserve lever tabs can be
reformed by inserting the rod and forming the tab over the rod.
d.
Pressure Gauges. Wash the divers depth gauge in fresh water after every dive. Avoid banging against
hard objects. Dry the gauge thoroughly before storage. Store gauges in a cool, dry place.
Section II. REPAIR PARTS, TOOLS, SUPPLIES, AND TEST EQUIPMENT
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GENERAL.
This Section locates and identifies the repair parts, standard tools, equipment and supplies authorized the operator
(diver) to complete the prescribed preventive maintenance checks and services.
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REPAIR PARTS AND SUPPLIES.
Repair parts are identified in Section II thru Section VI of Appendix E. Expendable material and supplies are located
in Appendix F. The letter "C" in the Maintenance level column Indicates items intended for divers use.
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TOOLS AND TEST EQUIPMENT.
Standard Tools are identified in Section VllI of Appendix E. Special Tools are listed in Section IX and Test Equip-
ment is contained in Section X. Observe the assigned maintenance level code "C."
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