Aqua Lung S.E.A. MK Technical Manual
  1. Manuals
  2. Brands
  3. Aqua Lung Manuals
  4. Diving Instrument
  5. SEA MK
  6. Technical manual
Aqua Lung S.E.A. MK Technical Manual

Aqua Lung S.E.A. MK Technical Manual

Survival egress air
Hide thumbs Also See for S.E.A. MK:
Table of Contents

Advertisement

Quick Links

Download this manual
S.E.A.
(Survival Egress Air)
MK
TECHNICAL MANUAL
REV 02/09

Advertisement

Table of Contents
loading
Need help?

Need help?

Do you have a question about the S.E.A. MK and is the answer not in the manual?

Questions and answers

Subscribe to Our Youtube Channel

Related Manuals for Aqua Lung S.E.A. MK

Summary of Contents for Aqua Lung S.E.A. MK

  • Page 1 S.E.A. (Survival Egress Air) TECHNICAL MANUAL REV 02/09...

  • Page 2: Copyright Notice

    Military sales: ksilver@aqualung.com Trademark Notice Aqua Lung , is a registered trademark of Aqua Lung America, Inc. ® Warnings, Cautions, & Notes Pay special attention to information provided in warnings, cautions and notes that are accompanied by one of these symbols:...

  • Page 3: Table Of Contents

    CoNTENTS Change Record ............................4 Copyright Notice ...........................5 General Guidelines ..........................5 General Conventions ..........................5 Initial Inspection Procedure ........................6 External Inspection ..........................6 Immersion/Leak Test ........................6 Medium Pressure (Over-Bottom) Test .....................6 DISASSEMBLY PROCEDURE ......................7 First Stage Disassembly ........................7 Second Stage Disassembly ......................9 REASSEMBLY PROCEDURE ......................11 First Stage Reassembly .........................

  • Page 4: Change Record

    SEA MK Technical Maintenance Manual CHANgE RECoRD Change No. Date Title or Description Change made by...

  • Page 5: Scheduled Service

    This manual provides factory prescribed procedures for the correct Unless otherwise instructed, the following terminology and techniques service and repair of the Aqua Lung SEA MK. It is not intended to be used are assumed: as an instructional manual for untrained personnel.

  • Page 6: Initial Inspection Procedure

    SEA MK Technical Maintenance Manual Initial Inspection procedure Medium (over-Bottom) pressure Test External Inspection 1. With the valve closed, purge the second stage to depres- surize the system. While securely holding the second 1. When possible, inspect the filter of the fill adapter for stage inlet fitting (51) with a thin 3/4"...

  • Page 7: Disassembly Procedure

    DISASSEMBLy pRoCEDURE 5. Unscrew and discard the burst plug (6) from the first stage (36) using a 3/8" socket. NOTE: Before performing any disassembly, refer to the exploded parts drawing, which references all mandatory replacement parts. These parts should be replaced with new and must not be reused under any circumstances –...
  • Page 8 SEA MK Technical Maintenance Manual 10. Insert the squared end of the stem into the valve seat b. Using a 1/8" hex key unscrew the retaining screw (27g) (20) and unscrew and discard the valve seat from the first from the pin indicator body (27b). Remove the spring (27e) stage body.

  • Page 9: Second Stage Disassembly

    17. Remove and discard the fill adapter port o-ring (22). 22. Using the bottle vice (pn 100397), vice insert (pn 100398) or strap wrench (pn 54325A22), hold the cylinder secure. While holding the cylinder secure, unscrew the first stage body (36) from the cylinder using a 1 3/16"...
  • Page 10 SEA MK Technical Maintenance Manual 3. Lift out the thrust washer (42) and diaphragm (43). Inspect the 7. Remove and discard the exhaust valve (56) by grasping the diaphragm for any tears or pin holes by holding it up to a light and flap of each valve and pulling straight outward.

  • Page 11: Reassembly Procedure

    REASSEMBLy pRoCEDURE 4. Place the spring (35) into the body. Press the piston into the cap (30) so that the piston head is seated flat against the cap. Verify there is no dirt or damage to the smooth inner sides First Stage Reassembly of the cap.
  • Page 12 SEA MK Technical Maintenance Manual 9. SEA MK with a pin-type pressure indicator (27a): 10. SEA MK with a dial-type pressure indicator (27): a. Install a new o-ring (22) onto the dial pressure indicator a. Drop a new lubricated o-ring (27c) into the pin indicator (27).
  • Page 13 14. Place a new, lubricated white washer (18) onto the valve 17. Attach a 3/4" crowfoot or medium deep-well socket to a stem (19), followed by the metal spacer (17) and lubricated torque wrench and tighten the bonnet to 90±3 in/lbs. o-ring (16).

  • Page 14: First Stage Testing

    SEA MK Technical Maintenance Manual Second Stage Reassembly 1. Install a new exhaust valves (56) by inserting the stem of the exhaust valve through the center hole of the exhaust port. Pull the stem all the way through until the mushroom plug pops through the hole and keeps the valve securely in place.

  • Page 15: Adjusting The Second Stage

    5. Install a new inlet fitting o-ring (14) in the groove located 9. Place the washer (46) over the threads of the stem. Thread between the wrench flats and shorter threads. a new locknut (44) onto the stem. Using a 1/4" nutdriver, tighten the locknut until about two threads show past the locknut.

  • Page 16: Final Testing

    SEA MK Technical Maintenance Manual 13. Close the SEA on/off valve by turning the handwheel 18. Install the mouthpiece (58) onto the box bottom. Loosely clockwise. Purge the air from the system by pressing down fasten a tie-strap clamp (55) over the slots at the base of the on the lever.
  • Page 17 WARNING: The SEA MK is designed to assist heli- copter crew members and passengers in emergency egress situations from submerged aircraft. It is very critical to ensure that no leakage is present, and that the unit has met all requirements in the Final Testing procedures outlined above.
  • Page 18 SEA MK Technical Maintenance Manual Table 1: Troubleshooting guide First Stage/Valve Assembly SyMpToM poSSIBLE CAUSE TREATMENT 1. The valve seat (20) is worn or damaged. 1. Replace valve seat. Lp system will not remain depressurized after valve is shut and second stage is purged.
  • Page 19 6. Disassemble and replace o-ring. Note: This is a partial list of possible problems and recommended treatments. For more information, contact Aqua Lung Technical Service Department for as- sistance with problems not described here. CAUTION: Recommended treatments which require disassembly of the regulator must be performed during a complete overhaul, according to the prescribed procedures for scheduled, annual service.
  • Page 20 SEA MK Technical Maintenance Manual Table 3: List of Tools and Service Kits pART # DESCRIpTIoN AppLICATIoN IP Gauge 111610 Checking medium pressure 0-400 psi Soft Case, 108362 IP test gauge IP Test Gauge SCUBA Fill 108325 IP testing and filling Adapter 944022 O-ring Tool...
  • Page 21 Table 3: List of Tools and Service Kits (continued) pART # DESCRIpTIoN AppLICATIoN 108361 Tool Pouch Tool holder Hex Key Sockets 9-AM11708 Pin-type pressure indicator (27) and LP swivel port plug (1) (1/8", 3/16") 9-46661 Pliers, 9-45171 Mouthpiece clamp (55) small cutter Cylinder 9-47709...
  • Page 22 SEA MK Technical Maintenance Manual Table 3: List of Tools and Service Kits (continued) pART # DESCRIpTIoN AppLICATIoN Wrench 9-44388 (11/16" & Hose fitting (11/16") 9-44385 1/2”) 7/16” Wrench 9-44572 1/2” Wrench MRS III 9-44385 9-44592 9/16” Wrench Reversible snap 111100 MRS III ring pliers...
  • Page 23 Table 3: List of Tools and Service Kits MISCELLANEoUS TooLS pART # DESCRIpTIoN AppLICATIoN Torque Apply torque to parts listed in Wrench Table 4: Torque Specifications, p. 24 ft/lbs / in/lbs HABD/SEA 100397 SEA bottle removal & installation BOTTLE VICE HABD/SEA 100398 BOTTLE VICE...
  • Page 24 Purge Flow MP 135±20 psi 5.0 SCFM flow rate (minimum) Table 6: Recommended Cleaners and Lubricants LUBRICANT/CLEANER AppLICATIoN SoURCE Aqua Lung, PN 820466, or Lubrication Technologies Christo-Lube MCg 111 All o-rings 310 Morton Street Jackson, OH 45640 (800) 477-8704 CAUTION: Silicone rubber requires no lubrication or preservative treatment.

  • Page 25: Procedure A: Cleaning And Lubricating

    procedure A: Cleaning and Lubricating Cleaning Brass and Stainless Steel parts 1. Preclean in warm, soapy water* using a nylon bristle tooth brush. 2. Thoroughly clean parts in an ultrasonic cleaner filled with soapy water. If there are stubborn deposits, household white distilled vinegar (acetic acid) in an ultrasonic cleaner will work well.

  • Page 26: First Stage With Cylinder Assembly, Exploded View

    SEA MK Technical Maintenance Manual S.E.A. First Stage with Cylinder Assembly 38a, 38b, 38c 60 ± 5 in. lbs. (6.8 ± .5 Nm) Wrench 90 ± 3 in. lbs. Tight (10.2 ± .3 Nm) 45 ± 2 in. lbs. (5.0 ± .5 Nm) 90 ±...

  • Page 27: Mk Second Stage, Exploded View

    MK Second Stage Exploded parts 45 ± 3 in.lbs. 5.0 ± .3 Nm 50 ± 3 in.lbs. 5.6 ± .3 Nm Key # part # Description Key # part # Description ..108344 overhaul parts Kit 48 ..104134 Poppet bearing ..108315 MK Second Stage Assy., Spare 49 ..104127 Spring...

  • Page 28: Maintenance Notes

    SEA MK Technical Maintenance Manual Maintenance Notes...
  • Page 29 Maintenance Notes...
  • Page 30 S.E.A. MK 2340 Cousteau Court • Vista, CA 92081 Phone (760) 597-5000 • Fax (760) 597-4900 www.aqualung.com/military ©2009 Aqua Lung International PN 108348 Rev. 02/09...

Table of Contents