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DISASSEMBLY PROCEDURE
NOTE : Before commencing disassembly, consult the exploded view to check the reference numbers of all parts requiring replacement.
These parts should all be replaced by new parts and should not be re-used on the pretext that the regulator has seen little use since its manufacture or since its last service.
ATTENTION : Use only the special tool (506001) when removing O-rings in order to avoid damaging the seal recess. The slightest scratch on a sealing surface could cause a leak. If a surface should be damaged then this part should be replaced with a new one. Do not use any pointed instrument or metal tool to remove O-rings.
1.
Unscrew the hose from the first stage using a 9/16” spanner.
Unscrew MP plugs (122233) and HP plugs (122237) with a 4mm Allen key. Remove the O-rings (124701 and 124703) with the tool (506001).
Screw the holding tool
(116320) into a free MP port.
YOKE CONNECTION
Start after point 1
2. Remove the yoke screw
(128631) and the dust cap
(124555).
Securely clamp holding tool
(116230) into vice with yoke connection facing up. Place the socket (A11001) on the yoke retainer (129242) and unscrew it. Remove the yoke retainer and the yoke (124611) from the body.
Remove the regulator from the vice.
Service Manual Core 1 st stage
Rev. 05/2015
Service Manual Core 1 st stage
3. Remove the filter (129209) and the O-ring (124703) from the body (129254).
4. Take the assembly yoke retainer (129242) & yoke
(124611). Put back in place the dust cap (124555) and the yoke screw (128631) into the yoke. Screw the yoke screw and compress the dust cap between the yoke retainer and the yoke screw, to open the
ACD connection (see pictures below).
Yoke screw not screwed Yoke screw enough
enough screwed
Securely clamp the assembly into vice by gripping the yoke retainer hexagon part with yoke connection facing down. With a 3mm Allen key, turn clockwise to unscrew the yoke shutter valve (129207).
Remove the assembly from the vice.
5. Remove the yoke screw (128631) and the dust cap (124555) to disassemble the system.
Using the tool (506001), remove the
O-ring (473056) of the yoke shutter valve (129207).
Separate the yoke shutter valve from the yoke shutter crown (129205).
Extract the O-ring (124703) from the inside groove of the yoke shutter crown with the tool
(506001).
6
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Key Features
- Compact and lightweight, the CORE is easy to pack and carry.
- Over-balanced diaphragm design provides consistent airflow even at low tank pressures.
- Sealed first stage keeps contaminants out, ensuring reliable performance.
- Adjustable second stage allows you to fine-tune your breathing effort.
- Venturi system helps to prevent free-flow, even in strong currents.
- Large purge button makes it easy to clear the second stage of water.
- Swiveling hose attachment allows for easy hose routing.
- Optional DIN or yoke adapter makes the CORE compatible with any tank.
- Lifetime warranty provides peace of mind.
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Frequently Answers and Questions
What should be done if the regulator has been used in a chlorinated or aggressive environment?
When should Aqua Lung regulators receive complete service?
What is the minimum service requirement for Aqua Lung regulators?
What should be done before starting to disassemble the regulator?
What precautions should be taken when holding the regulator body?
What should be done when reassembling the regulator?
What type of spare parts should be used for Aqua Lung regulators?
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