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REASSEMBLY PROCEDURE
COMMOM TO ALL MODELS
1. Screw the wet chamber body
(129904) or the dry chamber body
(129903) onto the body (129254)
WITHOUT ITS DIAPHRAGM, then place it standing on a table, the chamber down.
2. Place the body protector (128124) on the body
(129254) and then engage the polyurethane collar over the two HP ports.
3. Completely engage the body protector by pressing the top of it.
4. Unscrew the wet chamber body (129904) or the dry chamber body (129903).
Finish positioning the body protector collar.
Service Manual Core 1 st stage
Rev. 05/2015
Service Manual Core 1 st stage
5. Fit a new lubricated O-ring (124704) on the crown
(127585).
Slide the seat onto the tool (116236), positioning the seat lip against the tool plastic part. Move the system into the body (129254), plug side, and position the seat by pushing with the tool.
6. Screw the holding tool (116320) into a free MP port.
Securely clamp holding tool into vice with plug facing up.
Lubricate the new HP seat tail (124624). Insert it in the body (129254), blue face facing the body interior.
Check that the seat stay upright inside the body.
Place the spring (122244) around the seat.
NOTE : Before continuing, closely examine the antiextrusion washer (119129). You will note that it has a flat side and a concave side. For correct assembly the concave side should be against the
O-ring, as shown in the picture below.
O-ring
Anti extrusion washer
7. Fit a new anti-extrusion washer
(119129) then a new lubricated Oring (124612) in the plug (129120).
Using a 4mm Allen key, press the anti-extrusion washer and the O-ring against the plug bottom.
8. Fit a new lubricated O-ring (213714) onto the plug
(129120).
10
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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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