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SEA MK / LV2 Technical Manual

Remove the back-up ring (24), o-ring (25), brass washer

(26) and Teflon washer (27) from the stem (28).

Check Bonnet

NOTE: It is possible that some or all of these parts have

remained in the bonnet (21).

10.

Remove the o-ring (23)

from the bonnet (21).

11.

Insert the squared end of

the stem (28) into the seat &

disc retainer (29) and unscrew

it from the first stage body (8).

13.

Remove the pressure gauge (36) using a 7/8” crowfoot

and flex wrench. Remove o-ring (32) from the pressure gauge.

Crown

12.

Using a magnifier, inspect

the condition of the seat &

disc retainer crown inside the

first stage body (8). There

should be no scratches, nicks

or dents on the crown seating

surface.

CAUTION:

Be careful not to damage the fill port (33) with

the wrench while removing the pressure gauge (36).

Using the 3/4" socket and flex wrench, unscrew the bonnet

(21) from the first stage body (8). Pull the stem assembly out

of the bonnet.

Unscrew the handwheel retainer (15) using the modified

screwdriver. Remove the handwheel washer (16), spring (17)

handwheel (18), nylon washer (19) and indicator ring (20)

from the stem (28).

Disassembly of Handwheel

NOTE: SEA units will either have a dial pressure gauge

(36) or pin style pressure gauge (37). Identify which

type the SEA being serviced utilizes and follow the

instructions accordingly.

Disassembly of Dial Pressure Gauge

Disassembly of Pin Style Pressure Gauge

14.

Use the valve handle retainer tool to remove the pin

pressure indicator (37) from the first stage body (8). Remove

o-ring (32) from the pressure indicator body (38).

Содержание SEA LV2

Страница 1: ...Tertiary Branding TECHNICAL MANUAL Survival Egress Air SEA MK LV2 Rev 6 17...

Страница 2: ...ANUAL PN 108348 You can contact a Technical Adviser via e mail at sreilly aqualung com jbutner aqualung com grubin aqualung com Warnings Cautions Notes Pay special attention to information provided in...

Страница 3: ...bly 16 Second Stage LV2 Reassembly 17 Final Testing 19 Table 1 Troubleshooting Guide First Stage 20 Table 2 Troubleshooting Guide Second Stage 21 Table 3 List of Tools and Service Kits 22 Table 4 Torq...

Страница 4: ...dless of the amount of use the product has received since it was manufactured or last serviced 6 When reassembling it is important to follow every torque specification prescribed in this manual using...

Страница 5: ...to the exploded parts drawing which references all mandatory replacement parts These parts should be replaced with new service kit parts Old parts should not be reused under any circumstances regardle...

Страница 6: ...ing surface CAUTION Be careful not to damage the fill port 33 with the wrench while removing the pressure gauge 36 8 Using the 3 4 socket and flex wrench unscrew the bonnet 21 from the first stage bod...

Страница 7: ...o holes on top of the retainer cap 2 Unscrew the retainer cap from the first stage body 8 20 Using your fingers peel the retainer cover 1 off the retainer cap 2 18 Using a 9 16 socket and flex wrench...

Страница 8: ...it aside for reuse Second Stage MK Disassembly 1 Use diagonal pliers to cut the strap clamp 50 and remove the mouthpiece 49 from the box bottom 54 Inspect the mouthpiece to ensure it is free of any t...

Страница 9: ...w the hard cover 64 from the box bottom 69 Use the retaining ring wrench to unscrew the retaining ring 65 from the box bottom 3 Lift out the front cover 66 and diaphragm 48 Inspect the diaphragm for a...

Страница 10: ...ean supple and free of any blemishes WARNING Use only genuine Aqua Lung parts sub assemblies and components when ever assembling any Aqua Lung product DO NOT attempt to substitute an Aqua Lung part wi...

Страница 11: ...l port CAUTION To avoid damaging the fill port 33 do not over torque 5 Insert the shaft of the piston 4 into the spring 7 Press down on the retainer cap 2 and tighten the cap onto the first stage body...

Страница 12: ...the first stage body 8 Use the valve handle retainer tool to tighten the pin pressure indicator until hand tight 14 Thread the safety plug 9 into the lower HP port opposite the fill port on the first...

Страница 13: ...t sits on top of the bonnet 21 Face the round edge on the indicator ring 20 outward and thread the indicator ring onto the bonnet until it bottoms out 21 When the indicator ring 20 bottoms out turn it...

Страница 14: ...4 BAR with an inlet pressure of 3000 PSI 207 BAR 5 Close the handwheel 18 and open the bleed valve to depressurize the system Remove the test gauge from the MP hose 11 6 Since there is nothing attach...

Страница 15: ...n on the valve body to compress the spring 57 while threading it onto the inlet fitting Continue tightening the valve body onto the inlet fitting until it stops CAUTION If resistance is felt immediate...

Страница 16: ...valve body to prevent it from rotating inside the box bottom 54 Use a 3 4 socket and inch pound torque wrench to apply 50 in lbs 5 6 Nm of torque to the inlet fitting NOTE Set the valve body assembly...

Страница 17: ...he stem through the center hole of the exhaust port Pull the stem through until the barb is on the opposite side of the hole in the exhaust port Examine the flap of the exhaust valve to make sure it i...

Страница 18: ...e retaining ring wrench to screw the retaining ring 65 into the box bottom 69 hand tight Place the hard cover 64 over the front cover 66 and screw down until hand tight 7 Install mouthpiece 70 onto th...

Страница 19: ...manual DO NOT issue to a crew member or passenger any SEA which exhibits any signs of leakage or unsatisfactory performance until the problem has been thoroughly diagnosed and repairs have been made a...

Страница 20: ...spring 7 is weakened or damaged 3 Replace spring 7 4 The HP seat 6 is worn or damaged 4 Replace HP seat 6 5 The HP crown seating surface in first stage body 8 is worn or damaged 5 Replace first stage...

Страница 21: ...d 1 Re torque MP hose 11 at second stage fitting or replace hose 2 The MP hose o ring 25 is damaged 2 Replace the o ring 25 Water entering second stage 1 The mouthpiece 49 or 70 is incorrectly fitted...

Страница 22: ...A MK Carrying tools 111610 MP Test Gauge 0 400 psi Checking medium pressure 108357 Repair Mat Service and maintenance 108362 Soft Cases MP Test Gauge Cover for MP Test Gauge 108325 SCUBA Fill Adapter...

Страница 23: ...oot 7 8 Crowfoot Removal Installation of First Stage Body 8 Removal Installation of MP Hose 11 Removal Installation of Pressure Gauge 36 9 43226 103006 9 43001 3 4 Socket 9 16 Socket 3 8 Socket Remova...

Страница 24: ...ncluded in Tool Kit N A Torque Wrench in lbs Apply torque to parts listed in Table 4 Torque Specifications Not included in Tool Kit N A Torque Wrench ft lbs Apply torque to parts listed in Table 4 Tor...

Страница 25: ...urge Flow MP 135 20 PSI 9 3 1 4 BAR 5 SCFM 142 LPM flow rate minimum TABLE 6 RECOMMENDED CLEANERS AND LUBRICANTS LUBRICANT CLEANER APPLICATION SOURCE Christo Lube MCG 111 All o rings Aqua Lung PN 8204...

Страница 26: ...se only a soft nylon toothbrush to scrub away any deposits Rinse in fresh water and thoroughly blow dry using low pressure filtered air Cleaning Hoses 1 Hose fittings Ultrasonically clean with soapy w...

Страница 27: ...0304P O ring 10 pk 39 845034 Washer 40 100688 Spring Pressure Gauge 41 100613 Plunger 42 100607 Retainer 43 079105 Cylinder 1 5 ft 3000 PSI Black Aluminum 079120 Cylinder 2 0 ft 3000 PSI Black Aluminu...

Страница 28: ...31 Mouthpiece Black 50 104913 Clamp Strap Black 23 820015P O ring 10 pk 51 108438 Inlet Fitting Black 25 820010P O ring 25 pk 52 100907 Cover Exhaust Valve 53 100922 Exhaust Valve 54 100905 Box Bottom...

Страница 29: ...t Bearing 59 100945 Valve Body 60 100923 Lever 61 104129 Washer 62 102510 Locknut 67 108371 Cap Exhaust Valve 108371Y Cap Exhaust Valve Yellow 68 100122 Exhaust Valve 69 108374 Box Bottom LV2 Black 23...

Страница 30: ...SEA MK LV2 Technical Manual 30 MAINTENANCE NOTES...

Страница 31: ...31 MAINTENANCE NOTES...

Страница 32: ...hone 760 597 5000 Fax 760 597 4900 www aqualung com militaryandprofessional Blue Pantone 2728C Primary Preferred Branding Secondary Branding Tertiary Branding 2017 Aqua Lung International Survival Egr...

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