Aqua Lung SEA MK Troubleshooting Guide

REV 01/10TECHNICAL MANUALS.E.A. (Survival Egress Air) LV-2

10 SEA LV2 Technical Maintenance Manual21. Remove the o-rings (31 & 33) from the piston and dis-card. Insert the pin of the seat extraction too

115049474546445. Gently grasp the lever and remove the entire valve assembly (44-51) from the box bottom (63). It may be necessary to push in on th

12 SEA LV2 Technical Maintenance ManualREASSEMBLY PROCEDUREFirst Stage Reassembly32333423262322CAUTION: Before proceeding, visually inspect the cyl

13228. Thread the ll adapter port into the lower of the two HP ports. Attach a 9/16" socket to a torque wrench and tighten the ll adapter po

14 SEA LV2 Technical Maintenance Manual52NOTE: Before continuing, closely examine the back up ring (15). You will note that it has a at side and

1598720. When the indicator ring bottoms out, turn it slightly counterclockwise so the corners of the square shaft of the stem point towards the ce

16 SEA LV2 Technical Maintenance Manual3. Mate the threaded nozzle of the ll adapter into the open ll port, and turn clockwise by hand until snug

17Filling the SEA with compressor ll adapterNOTE: The Compressor Fill Adapter (P/N 1006-56) is not included with SEA, and must be purchased separa

18 SEA LV2 Technical Maintenance ManualFilling the SEA with the MRS III Mobile Rell StationThe MRS III is a self-contained Mobile Rell Station wi

195251504945feetair outlet hole4446two threadsNOTE: If the poppet bearing does not stay in place, put a small amount of Christo-Lube® on the squar

2 SEA LV2 Technical Maintenance ManualCOPYRIGHT NOTICE©2010 AQUA LUNG AMERICA. S.E.A. LV2 TECHNICAL MANUAL, P/N 108448You can contact a Technical A

20 SEA LV2 Technical Maintenance Manual12. Using a 1/4" nut driver, tighten the locknut until air starts to leak. As soon as a leak is detecte

2121231. Once completely dry, install cap protector (29).2. Thread the ll port plug (21) into the ll adapter port (23) until nger tight.This En

22 SEA LV2 Technical Maintenance ManualUpon initial receipt of the SEA MK/LV2/HESP (here after referred to as SEA) from the OEM or storage and prior

23SYMPTOM POSSIBLE CAUSE TREATMENTSystem will not remain depressurized after valve is shut and second stage is purged.1. The valve seat (20) is worn

24 SEA LV2 Technical Maintenance ManualTable 2: Troubleshooting Guide Second StageSYMPTOM POSSIBLE CAUSE TREATMENTLeakage or free ow from the sec

25PART # DESCRIPTION APPLICATION108361Tool PouchSEA MK / LV2Tool holder111610Test Gauge 0-400 psiChecking medium pressure108362Soft Case, IP Test Ga

26 SEA LV2 Technical Maintenance ManualPART # DESCRIPTION APPLICATION820466Christo-Lube MCG III 2 oz. tube Lubrication9-AM11708 9-46661Hex Bit Tool

27PART # DESCRIPTION APPLICATION9-445729-443859-445923/8” & 7/16” Wrench1/2” Wrench5/8” & 9/16” WrenchMRS III9-4460512’ AdjustableWrenchMRS

28 SEA LV2 Technical Maintenance ManualPART # DESCRIPTION APPLICATION820467 Christo-Lube MCG III 16 oz. tubeLubrication100398HABD/SEAVise Jaw

29Table 4: Torque SpecicationsPART # DESCRIPTION / KEY ITEM # TORQUE108312 1st Stage Body (item 36/1st stage) 25±2 ft/lbs108305 Swivel adapter (ite

3CONTENTSCopyright Notice ...

30 SEA LV2 Technical Maintenance ManualProcedure A: Cleaning and LubricatingCleaning Brass Parts1. Preclean in warm, soapy water* using a nylon br

31On-off valve assembly may be replaced with optional "no on-off" plug, part number 108367 (see key # 39 below) & part number 820015

32 SEA LV2 Technical Maintenance Manual Part numbers in BOLD ITALICS indicate standard overhaul replacement part.LV-2 Second Stage59606151504948474

33Maintenance Notes

©2010Aqua Lung InternationalS.E.A. LV22340 Cousteau Court • Vista, CA 92081 Phone: (760) 597-5000 • Fax: (760) 597-4900 www.aqualung.com/military

4 SEA LV2 Technical Maintenance ManualCHANGE RECORDChange No. Date Title or Description Change made by001-11 10/6/11 P. 25-28 Table 3: List of Tool

5IntroductionThis manual provides factory prescribed procedures for the correct service and repair of the Aqua Lung SEA LV-2. It is not intended to

6 SEA LV2 Technical Maintenance ManualMedium (Over-Bottom) Pressure Test1. With the valve closed, purge the second stage to depres- surize the

76. Unscrew the handwheel retaining nut (7) using a notched medium at blade screwdriver. Remove the washer (8), spring (9), handwheel (10), indica

8 SEA LV2 Technical Maintenance Manual27e27f27g27b27b27g8. Remove the backup ring (15), o-ring (16), spacer (17) and washer (18) from the stem. (N

927c27dNOTE: There is a small pin inside the adapter port. Take care not to lose the pin when the adapter port is removed.NOTE: The check valve may