Air Source Service Manual
Contents
1. Figure 23 driver may be used to turn the crown exactly 4 turns clockwise from the first thread Sea Quest strongly recommends that the T Tool be used however in order to preset the crown more precisely If the T Tool is not available a medium blade screw 14 ea Quest Air Source Service and Repair Manual 1 3 31 Position the crown housing behind the poppet housing with the crown facing inward toward the LP seat and carefully insert the crown housing into the poppet housing see Fig 24 Press firmly together until both parts are flush with each other Figure 24 unseated as the crown housing passes into the pop pet housing disassemble and correct as needed before proceeding further Leakage may otherwise result if the O ring is not correctly seated If the O ring 5 seems to bind or otherwise comes 1 3 32 Closely examine the barrel inside the body which houses the valve module to identify the flat ledge inside which indexes with the seating shoulder ofthe poppet housing Align the valve module accordingly outside the barrel of the body so that the ledge inside the body faces straight up and the shoulder of the poppet housing faces straight down see Fig 25 Gently insert the valve module lever first into the barrel being careful to guide the end of the lever through without obstruction Check first to ensure that the poppet housi2. Circular Port Oval Port Seating Shoulder Figure 20 1 3 26 Position the lever 42 above the poppet housing so that the button faces toward 12 o clock in the same direction as the circular port of the housing see Fig 21 Gently pull the hous ing down over the assembly post once again and hold it de pressed with one hand to compress the poppet spring Lay the forks of the lever beneath the washer and locknut and between the two flanges and slowly relax pressure on the poppet spring while watching to ensure that the lever rises and stands upright Figure 21 1 3 27 If necessary apply a 4 nut driver to turn the locknut clockwise until 1 2 threads of the poppet stem are visible Re move the nut driver and set the poppet housing aside 1 3 28 Install all four O rings 5 amp 6 onto their respective grooves in the crown housing 7 1 3 29 Install the O ring 3 onto the crown 4 and carefully insert the threaded end of the crown into the larger unthreaded end of the crown housing Gently press it in further with the blunt end of the seal seat extractor P N 5116236 until it stops see Fig 22 D Figure 22 1 3 30 Apply the crown adjustment feature of the T Tool to turn the crown in clockwise as far as the tool will allow and then turn the crown back counter clockwise exactly turn to arrive at the correct preliminary setting see Fig 23 sealjuest TOOLS
3. When removing O rings care must be taken to not damage the regulator surfaces in contact with the O rings Tools used to remove O rings must not have any sharp edges or points that could scratch metal sealing surfaces Sea Quest strongly rec ommends that all O ring removal tools should be made of ei ther brass or plastic LUBRICATION O rings should be lubricated with an approved compound please refer to Table 2 for proper lubricants O rings should be lubri cated only with a very light film of silicone grease Do not use spray aerosol silicone under any circumstances The aerosol propellant may damage the plastic and rubber components of the regulator and the lubricant will quickly evaporate provid ing little or no lasting benefit Do not use any petroleum based lubricants or products or any aerosol silicone sprays to lubricate or clean any part of Sea Quest regulators or inflation systems The petroleum base or propellant gas may attack or weaken the plastic or rubber parts Refer to Table 2 for approved lubricants Sea Quest regulators and inflation systems are intended for use in water temperatures warmer than 45 F 7 Colder water may cause regulators to be more sensitive to a freeflow condition and can lead to a situation that requires an appro priate response to prevent serious injury or death Users of Sea Quest regulators are advised to ensure that they are ad equately trained to deal with
4. Air Source 25455 27 Mouthpiece w 2 Retainers 42802 n s 29 5 LP Hose Air Source 41523 e ix n s Air Source Service Kit 42608 n s 1999 Upgrade Kit 42642 Items in bold are included in the Overhaul Service Kit Italicized items are included in the 1999 Upgrade Kit ea Quest Air Source Service and Repair Manual 22 amp rs o m TM Air Source Schematic
5. between 135 147 psi A caution If the gauge indicator continues beyond an intermediate pres sure of 160 psig immediately turn off the air supply valve and depressurize the first stage by depressing the second stage purge button This indicates a leak inside the first stage AIRFLOW TEST 1 5 3 Place the Air Source mouthpiece on the mouthpiece adapter of the test bench Slowly apply suction until the flow meter indicates at least 11 SCFM Inhalation effort as indicated by the test bench Magnahelic gauge should read no more than 6 inches of water If the reading is over 6 inches of water refer to the Troubleshooting Section OPENING EFFORT TEST 1 5 4 With the second stage still connected to the mouthpiece adapter on the test bench slowly apply suction Observe both the inhalation effort and the intermediate pressure gauge When the intermediate pressure gauge indicator first begins to drop the Magnahelic gauge should indicate an opening effort of 1 3 2 0 inches of water PURGE FLOW TEST 1 5 5 With the second stage still connected to the mouthpiece adapter on the test bench completely depress the purge button while observing the flowmeter The flowmeter should indicate a minimum of 5 0 SCFM 142 L P M If the purge flow is less than 5 0 SCFM please refer to the Troubleshooting Section ea Quest Air Source Service and Repair Manual 17 VACUUM LEAK TEST 1 5 6 The following test helps ver
6. order given Read each section completely PRIOR to beginning work described in that section This will familiarize the repair technician with important pre cautions to take during each service procedure Pay close attention to all WARNINGS CAUTIONS and NOTES that are intended to draw your attention to items of importance Definition of Warnings Cautions and Notes Indicates a procedure or situation that may result in seri ous injury or death for either the technician or the user if instructions are not followed correctly Indicates any situation or technique that may result in po tential damage to the product or render the product un safe if instructions are not followed correctly Is used to emphasize important points and tips GENERAL PROCEDURES MAINTENANCE SCHEDULES Regulators and inflation systems are subjected to a variety of environmental elements that over time can affect the performance of the product and as such require frequent tuning and adjust ment As an Authorized Sea Quest Dealer you are advised to inform your staff and customer that Sea Quest regulators and buoyancy compensators require complete servicing at least once a year Under certain circumstances a complete servicing is required every 3 6 months Some of these circumstances are e Frequent or improper use e Inadequate routine freshwater rinsing e Regulator use in dirty or polluted
7. SCFM flow rate minimum 20 Quest Air Source Service and Repair Manual NOTES Sea Quest Air Source Service and Repair Manual 21 REGULATOR REPAIR AND REPLACEMENT PARTS AIR SOURCE SECOND STAGE amp INFLATOR ASSEMBLY Item Description Part Item Description Part 1 Quick Disconnect Fitting 15111 29 O ring 15079 2 Sintered Filter 15055 30 O ring 15114 3 O ring 15016 31 Valve Retainer 15092 4 Crown 15026 32 Valve Core 13206 5 O ring 15068 33 Spring 15112 6 O ring 15005 34 Inflator Button 15081 7 Crown Housing 15089 35 Inflator Button Cover Blue 15086 8 Poppet Seat 15027 36 Inflator Bezel 15080 9 Poppet 15103 37 Oral Seal Kit includes 37a 42641 10 Poppet Spring 15110 37a Oral Seal Washer N A 11 Poppet Housing 15113 38 Screw 15107 12 Poppet Guide 15049 39 Exhaust Retainer 15078 13 Upper Cable 15118 40 Exhaust Valve Diaphragm 15105 14 Spiral Hose 8 15096 41 Exhaust Cap 15082 15 Trim Grip 15090 42 Demand Lever w Button 42804 16 Spiral Hose 6 15098 43 Washer 15039 17 Lower Cable 15117 44 Locknut 15020 18 Hose Clip 15735 45 Diaphragm Assy 42803 19 Clamp 15719 46 Diaphragm Ring 15084 20 Pin 0 71 15106 47 Diaphragm Retainer 15087 21 Pin 1 0 15610 48 Purge Button 15091 22 Oral Button Cover Blue 15099 n s QD Fitting Cover w String 41501 23 Oral Poppet 15083 n s Spiral Hose Assy 42801 24 Oral Spring 15095 n s LP Hose Adapter 42308 25 Oral Bezel 15093 n s 25 LP Hose Air Source 41522 26 Body 15094 n s 27 LP Hose
8. a regulator in a freeflow condi tion or an out of air emergency before attempting to dive in a cold water environment ea Quest Air Source Service and Repair Manual RECOMMENDED TOOLS AIR SOURCE TABLE 1 Sea Quest Part No 9116236 Description Seal seat extractor Application Removal installation of crown and filter 778694 Valve Core Tool Removal installation of valve core 42314 Air Source T Tool Removal installation of inflation valve bezel quick disconnect fitting and crown adjustment 42315 Air Source Multi Tool Removal installation of purge button and retaining ring exhaust cap and assembly of poppet w lever 42316 Air Source Oral Assembly Tool Assembly of oral valve 41016 Inline Crown Adjustment Tool Adjustment of opening effort 1116 10 test gauge Intermediate pressure testing 9440 22 O ring tools O ring removal amp installation 41532 LP air nozzle Parts drying N A Magnifier w illumination Sealing surface inspection N A Ultrasonic cleaner 60HZ 1 3 amp Brass amp stainless steel parts cleaning N A Phillips Screwdriver small Disassembly assembly of oral valve seal N A Multi Tool P N 42315 e Purge cover removal installation nut driver Exhaust cap removal installation Inline Crown Adjustment Tool P N 41016 Oral Assemb
9. air supply of 3 000 psig and slowly open the air supply valve to pressurize the regu lator Positive airflow should be present at the second stage If no air flows from the Air Source when the first stage is pressurized review the preliminary settings of the locknut and crown in steps 1 3 27 amp 1 3 30 to ensure they set correctly Then engage the Inline Adjustment Tool as described in the following steps and turn the crown out counter clockwise only until a very slight flow of air can be heard 1 4 4 Press the knob of the Inline Adjustment Tool inward and gently turn the knob until it can be felt that the blade of the adjustment shaft has engaged the slotted head of the orifice Continue to hold the knob inward in order to prevent it from being forced outward by the internal air pressure 1 4 5 Turn the knob of the Adjustment Tool clockwise in very small increments of adjustment while lightly depressing the le ver to cycle the second stage Pause to listen after each adjust ment to determine whether the airflow has stopped When the airflow is stopped and no leakage can be heard after cycling the second stage turn the crown further clockwise exactly 14 turn Then release the knob of the adjustment tool to ensure that the shaft no longer makes contact with the orifice Over adjustment of the orifice will cause excessive lever slack and valve spring tension and may severely degrade the per formance of t
10. amage or corrosion If it is found to be damaged bent or corroded dis card and do not attempt to reuse 1 1 18 Using a plastic or brass O ring tool lightly stick the center of the LP seat 8 inside the head of the poppet and lift the seat out Discard the seat and inspect the head of the pop pet to check for any nicks scratches or other signs of damage If any signs of damage are found discard the poppet and do not attempt to reuse 1 1 19 Closely inspect the poppet guide 12 to ensure that it is square in its center and seated flush inside the flanges of the poppet housing If any signs of deformation or damage are found it may be pressed out from inside and discarded using 4 5 mm plastic or wood dowel It is otherwise not necessary to remove the poppet guide for annual service and cleaning 1 1 20 Mate the pins on the large end of the Air Source T Tool into two opposing holes in the inflator bezel 36 See Fig 6 While holding the tool securely engaged turn the bezel counter clockwise to loosen and remove the bezel inflator button 34 inflator button cover 35 and spring 33 Separate the button and button cover from the bezel and set the button aside Figure 6 several components refer to the schematic draw ing Units manufactured before June 1999 may require the installation of the Revision B Upgrade Kit in addition to the annual service parts kit When performing overhaul service it is i
11. ard and do not reuse 1 1 23 Firmly grasp the valve core 32 using a pair of small needle nose pliers and pull straight out of the body to remove the valve core and valve core retainer 31 1 1 24 Remove both O rings 30 amp 29 from the valve core re tainer and the recess inside the body and discard 1 1 25 While holding the valve core retainer secure apply the Quest Air Source Service and Repair Manual 9 Valve Core Tool P N 42303 to turn the valve core counter clockwise Remove and discard the valve core Do not reuse 1 1 26 Mate the pins ofthe Air Source Multi Tool into the oral valve exhaust cap 41 See Fig 8 While holding the tool securely engaged turn the cap counter clockwise to loosen and remove Closely inspect the cap for any signs of damage espe cially around the threads If found discard it and do not reuse Figure 8 1 1 27 Remove the exhaust valve diaphragm 40 from the dia phragm retainer 39 and discard 1 1 28 Turn the diaphragm retainer counter clockwise by hand to loosen and remove from the body Closely examine the re tainer to check for any cracks distortion or other signs of dam age especially around the threads and spokes If damage is found discard the retainer and do not attempt to reuse 1 1 29 While holding the body secure apply a small Phillips screwdriver to the oral seal screw 38 which 1 visible through the exhaust port and turn counter cloc
12. ard it and do not reuse 1 1 34 Closely inspect the bezel for any signs of damage es pecially around the threads and hex opening in the center If it appears damaged due to cross threading or excessive torque discard it and do not reuse 1 1 35 Closely examine all features of the body especially at the threaded openings which contain the power button and oral button assemblies and quick disconnect fitting Check for any signs of cross threading excessive torque or other damage If any damage is found discard the body and do not reuse 1 2 CLEANING amp INSPECTION 1 2 1 All parts should be cleaned first in a warm not over 120 F mild soap and water solution Use a soft nylon bristle brush to help remove any excess or loose contamination After an initial warm water and soap cleaning all parts should be thor oughly rinsed in clean fresh water and dried with filtered low pressure 30 psig After an initial cleaning in warm soap and water solution metal parts should be cleaned in an ultra sonic cleaner using the appropriate ultrasonic cleaning solution see Lubricant and Cleaner Table 2 Be sure all O rings and other rubber or plastic parts are removed before cleaning in an ultrasonic cleaner or chemical bath Cleaning solutions may damage these components 1 2 2 If an ultrasonic cleaner is not available metal parts can be cleaned by soaking the metal parts in a chemical bath solu tion of Oak
13. d evenly on all sides and does not appear to be cocked or partially unseated Do not cross thread or overtighten the oral bezel during in stallation Failure to correctly install the oral valve assembly may cause permanent damage to the bezel poppet or body requiring the replacement of these parts Leakage may oth erwise result from using these parts in damaged condition 1 3 9 Examine the oral seal assembly 37 to identify the raised sealing ridge which surrounds the hole on one side see Fig 14 Guide the seal into place through the large opening of the body so that the sealing ridge is facing down directly over the poppet stem of the oral button assembly and the flat non sealing side is facing up Lay the washer 37a inside the recess so that it is centered directly over the hole Sealing Ridge Non sealing side Figure 13 1 3 10 Insert the screw 38 through the washer and the hole in the center of the seal assembly and into the poppet stem of the oral button Carefully begin threading the screw clockwise by hand to ensure proper threading While holding the oral button completely depressed apply a small Phillips head screwdriver to turn the screw further clockwise only until lightly snug Check to ensure that the oral seal assembly is tightened flush against the end of the button poppet and relax the button Over tightening the screw will strip the threads of the oral button poppet requirin
14. dence of damage e Button covers 22 amp 36 Inspect for cracking tears or pin holes Closely examine the sealing lip to check for any signs of damage or distortion e Mouthpiece 29 Inspect for cracking or tears or any exces sive wear especially around the bite tabs e Body 26 Inspect for any indication of cracks or thread damage Closely examine the seating ledge which indexes with the poppet housing to ensure it is free of any distortion or other damage Refer ahead to Fig 25 on page 14 1 2 7 If any of the listed parts show any damage they must be replaced with new 1 2 8 Check all metal parts for excessive wear or corrosion Check all metal sealing surfaces which make contact with O rings for any signs of contamination and or imperfections that may cause leakage past the O ring seal Examine all chrome plated surfaces for any evidence of peeling or flaking of the chrome plating Inspect all threads for galling cross threading or damage to the chrome plating If any parts show damage or excessive wear they must be replaced with new 1 3 AIR SOURCE REASSEMBLY Use only genuine Sea Quest parts subassemblies and com ponents whenever assembling Sea Quest products DO NOT attempt to substitute a Sea Quest part with another manufacturer s regardless of any similarity in shape size appearance Doing so may render the product unsafe and could result in serious injury or death 1 3 1 Fitth
15. dte ie lp eui eee 17 VacuumLeak Test toad GREGG ERR RE I ERA ERU OR RET S TUER dd 17 Air Source Troubl h Ootli5 ti ort REST REOR ORE EDT ESSI e EIE DESSEN VINE LETT 18 Table 3 Test Bench Specifications ss 19 Air Source Parts List uso edi vate estin ESI eth 21 Air Source Schematic codo eodem iced 22 Quest Air Source Service and Repair Manual INTRODUCTION Sea Quest buoyancy compensators and regulators are the prod uct of many years of research and development Sea Quest has utilized proven materials and design to maximize reliability and performance This manual is intended only as a guide for the experienced repair person that has completed a Sea Quest service and repair seminar It is not intended to educate inexperienced repair per sonnel or the consumer in all aspects of Sea Quest regulator and buoyancy compensator repair Sea Quest repair seminars are available periodically to Authorized Sea Quest Dealers Ser vicing and repair at the repair shop level mainly involves clean ing inspection adjustment and replacement of worn parts If you have any questions on any of the procedures inspec tions or tests please contact Sea Quest at 877 253 3483 SAFETY PRECAUTIONS This manual provides step by step instructions for the disas sembly inspection cleaning reassembly and testing of the Air Source second stage inflation system It is recommended that all steps are followed in the
16. e mouthpiece 27 onto the body 26 and press both retainers 28 firmly into place so they are seated flush inside their recessed holes 1 3 2 Stand the oral button poppet 23 with the stem facing up and place the spring 24 over the poppet stem 1 3 3 Examine the features of the oral bezel 25 to identify the recess in which the spring seats and place the bezel over the poppet stem with the recess facing down 1 3 4 Drop the oral seal screw 38 into the open end of the Oral Assembly Tool P N 42316 so that the tip protrudes out of the slotted end Place the slotted end of the tool directly above the center of the bezel and slowly press the tool down rotating it in either direction if necessary until it fully engages with the hex of the poppet While holding the tool and bezel depressed insert a small Phillips screwdriver through the open end of the tool and gently thread the screw clockwise into the poppet see Fig 10 After ensuring that the screw is correctly threaded continue turning it clockwise only until lightly snug and remove the screwdriver The bezel should now be held securely in place while the tool is temporarily installed over it with the spring compressed beneath it to facilitate the installa tion of the button cover Figure 10 Quest Air Source Service and Repair Manual 11 Over tightening the screw will strip the threads of the oral button poppet requir
17. e or deterioration is found discard and do not reuse 1 1 7 Mate the pins on the small end of the Air Source T Tool P N 42314 into the bore holes on both sides of the quick dis connect fitting 1 While holding the tool securely engaged turn the fitting counter clockwise to loosen and remove see Fig 2 Inspect the fitting for any signs of damage and set it aside to be reused if none are found Be careful to avoid stressing the lever as the valve module exits the body 1 1 10 While holding the poppet housing 11 ofthe valve mod ule secure with one hand firmly grasp the crown housing and pull straight away to separate these two parts Set the poppet housing aside 1 1 11 While holding the crown housing secure insert the pin of the seat seal extractor P N 5116236 through the open cen ter of the crown inside the housing and press out the filter 2 See Fig 4 Remove all four external O rings 5 amp 6 including one which may have remained inside the poppet housing Dis card these with the filter and do not attempt to reuse Figure 4 1 1 12 While holding the crown housing secure apply a me dium blade screwdriver to the slotted head of the removable crown 4 and turn the crown completely out approximately 8 10 full turns counter clockwise to disengage its threads ea Quest Air Source Service and Repair Manual Because the crown is O ring sealed it will not freely e
18. e the two small pins into the holes of the quick disconnect fitting While holding the tool securely engaged tighten the fitting clockwise until it is snug and its flange is seated flush against the body see Fig 27 Do not overtighten 7001 a Jsan Jeas SN Figure 27 quires the use of the Air Source Inline Adjustment Tool in addition to a current 7 99 or later or spe cially modified T Tool Please refer to the Air Source Technical Bulletin dated August 1 1999 which ex plains the procedure for modifying the T Tool for use with the Inline Adjustment Tool The Adjustment and Final Assembly procedure ea Quest Air Source Service and Repair Manual 15 1 4 ADJUSTMENT amp FINAL ASSEMBLY 1 4 1 Verify that the first stage regulator which the Air Source will be used with has been recently serviced and is adjusted to a stable intermediate pressure of 135 147 psi Depressurize and connect this first stage with the LP hose of the Inline Ad justment Tool Check to ensure there are no open ports 1 4 2 Mate the knurled coupler of the Inline Adjustment Tool over the shaft which 1 installed inside the quick disconnect fit ting Retract the coupler to connect the tool onto the fitting Then fit the adjustment knob onto the end of the shaft while being careful to avoid engaging the crown see Fig 28 Figure 28 1 4 3 Connect the first stage to a filtered
19. ectly Replace mouthpiece Replace demand diaphragm Replace exhaust diaphragm s Disassemble and properly re assemble Check for distortion Disassemble and replace body 6 Disassemble and replace faulty O ring Disassemble and correct as needed Disassemble and correct as needed Inflation valve leaks Valve core 32 corroded or damaged Valve core retainer 31 scratched Replace valve core Replace valve core retainer Recommended treatments which require disassembly of the regulator must be performed during a complete overhaul according to the prescribed procedures for scheduled annual service Do not attempt to perform partial service For assistance with a problem not described here contact a Sea Quest Technical Advisor Quest Air Source Service and Repair Manual 19 TEST BENCH SPECIFICATIONS TABLE 3 Leak test CONDITION Inlet 2 500 3 000 100 psi ACCEPTABLE RANGE None Intermediate pressure Inlet 2 500 3 000 100 psi 135 147 psi Intermediate pressure creep Inlet 2 500 3 000 100 psi 5 psi max between 5 to 15 seconds after cycling regulator purge Opening effort Inlet 2 500 3 000 100 psi intermediate pressure 135 147 psi 1 3 to 42 0 inch H 0 Flow effort Intermediate pressure 135 147 psi at 15 SCFM 6 inches H 0 maximum Purge flow Intermediate pressure 135 147 psi 5 0
20. g its replacement The oral seal as sembly may otherwise become loosened from the oral but ton assembly rendering the oral valve inoperable 1 3 11 Closely examine the exhaust diaphragm retainer 39 to identify the flat sealing surface top which is opposite the side that is recessed bottom See Fig 14 Insert the stem of the diaphragm 40 through the center hole in the top of the retainer and gently pull the stem through the retainer only as far as is necessary to seat the barb on the recessed side Snip off the excess portion of stem just above the barb to prevent any obstruction of the oral seal Figure 14 12 ea Quest Air Source Service and Repair Manual 1 3 12 Fold both sides of the diaphragm upward to grasp the top ofthe retainer with thumb and forefinger Mate the retainer into the exhaust port of the body and turn clockwise by hand only until lightly snug Do not overtighten 1 3 13 Mate the exhaust cap 41 into the exhaust port of the body and turn clockwise by hand to engage the threads Mate the pins of the Air Source Multi Tool P N 42315 into the oral valve exhaust cap 41 While holding the tool securely engaged turn the cap clockwise until it is snug and flush against the body see Fig 15 Do not overtighten Figure 15 1 3 14 Examine the features of the valve core retainer 31 to identify the stem and two positioning tabs on its underside a
21. g surface damaged Poppet spring 10 damaged ACTION REQUIRED Refer to first stage Troubleshoot ing Guide Replace LP seat Adjust as described in section 1 4 Replace demand lever with new Replace crown Replace poppet spring Low purge or excessive work of breathing full cylinder Low intermediate pressure should be 140 5 psi Demand lever 42 or crown 4 adjusted incorrectly Demand lever 42 bent Low pressure hose obstructed Refer to first stage Troubleshoot ing Guide Adjust as described in section 1 4 Replace demand lever with new Clean or replace hose External air leakage O ring 3 5 or 6 damaged Oral seal 37 damaged or installed incorrectly Oral button cover 22 damaged or installed incorrectly Inflator button cover 36 damaged or installed incorrectly Body 26 damaged Disassemble and replace faulty O ring Disassemble and correct as needed Disassemble and correct as needed Disassemble and correct as needed Disassemble and replace body Water entering second stage Hole in mouthpiece 27 Demand diaphragm 45 damaged Exhaust diaphragm 40 damaged Diaphragm improperly seated between body 26 and retainer 47 Body damaged 6 O ring 3 5 or 6 damaged Oral button cover 22 damaged or installed incorrectly Inflator button cover 36 damaged or installed incorr
22. he Air Source 1 4 6 Check the position of the lever to determine the amount of slack that is present Apply a socket with hand driver to turn the locknut clockwise in small increments of no more than 14 turn pausing to listen after each adjustment only until the lever stands at its maximum height with no slack present Lightly depress the lever to cycle the second stage and listen again to check whether any leakage has returned Over adjustment of the locknut will eventually retract the pop pet from the crown and cause leakage combined with exces sive valve spring tension which may severely degrade the performance of the Air Source 1 4 7 Lightly depress the lever several times to cycle the sec ond stage and listen for any leaks Perform any follow up ad justments as needed at the source to eliminate the leakage 1 4 8 When the second stage has been satisfactorily adjusted turn the air supply valve completely shut and lightly depress the lever to depressurize the system Disconnect the LP hose of the Inline Adjustment Tool from the first stage 1 4 9 Check to ensure that the adjustment shaft is not engaged with the crown and remove the knob from the the Inline Ad justment Tool Retract the knurled coupler to disconnect and remove the tool from the second stage and adjustment shaft 1 4 10 Place the narrower end of a modified T Tool over the adjustment shaft and mate the two
23. he poppet spring 10 over the stem of the pop pet 11 and insert the stem of the poppet into the open end of the housing Hold these parts together and place the open end ofthe housing directly over the poppet assembly post of the Air Source Multi Tool P N 42315 See Fig 19 Quest Air Source Service and Repair Manual 13 Figure 19 1 3 23 Gently pull the poppet housing down over the post un til it is flush with the base of the tool to compress the spring inside Do not use force to press the poppet stem through the guide in the end of the housing Ifthe poppet does not move freely through the guide in the end of the housing it will be necessary to rotate it slightly in either direction to align the square stem of the poppet with the square hole of the guide 1 3 24 While holding the poppet housing depressed over the assembly post place the washer 43 over the stem of the pop pet followed by the locknut 44 Thread the locknut clockwise by hand onto the poppet until one thread of the stem is visible 1 3 25 Closely examine the features of the poppet housing to identify the two airflow ports on opposite sides one which 1 oval and the other which is circular Also locate the squared off seating ledge just below the circular port which indexes with the body see Fig 20 Position the poppet housing over the assembly post with the oval port facing toward six o clock
24. ify that all diaphragms and other water sealing components are installed correctly Shut off the air supply to the first stage Purge the second stage so that there is no air pressure in the first or second stage Inhale gently on the second stage Do not inhale forcefully as this may suck in the exhaust diaphragm During inhalation you should not be able to feel any air flow If you are able to inhale even slightly there is a leak in the second stage most likely at the main dia phragm or the exhaust diaphragm Exhale normally You should not feel any restrictions to the exhalation Repeat this process several times TESTING WITHOUT A TEST BENCH OPENING EFFORT TEST 1 5 7 Check the opening effort by holding the second stage by the mouthpiece so that the diaphragm 1 facing down and paral lel with the water line Slowly submerge the Air Source second stage in clean water Observe at what depth the second stage begins to flow The second stage should begin to flow when the second stage diaphragm 1s approximately 1 0 to 2 0 inches be neath the surface of the water This indicates an approximate but acceptable opening effort PURGE FLOW TEST 1 5 8 Depress the purge button completely for 3 4 seconds several times to check for adequate purge flow SUBJECTIVE BREATHING TEST 1 5 9 The following subjective test is performed to check the overall breathing performance of the Air Source second stage Breathe in slowly and deeply 4 6 times The
25. ing its replacement The oral seal assembly may otherwise become loosened from the oral button assembly rendering the oral valve inoperable 1 3 5 Fit the oral button cover 22 over the head of the poppet and gently work the lip of the button cover over the ridge of the bezel until it is evenly seated all around see Fig 11 Figure 11 1 3 6 Insert the open end of the tool into the oral valve hole in the body and pull it out through the exhaust port on the oppo site side see Fig 12 Rotate the button assembly slightly back and forth as needed to seat the cover inside the body While pressing the button inward turn the tool clockwise to engage the threads and tighten the bezel into the body until finger snug Figure 12 1 3 7 While holding the oral button completely depressed in sert a small Phillips screwdriver through the tool to engage with the screw Turn the screw out counter clockwise to loosen and remove and set the screw screwdriver and oral valve assem bly tool aside depressed while removing the screw in order to pre It is very important to hold the oral button completely vent the poppet threads from becoming stripped 1 3 8 Apply a nut driver to the stem of the poppet and turn the poppet clockwise to tighten the bezel lightly snug Remove the nut driver and closely inspect the button cover to ensure that it is seate
26. ing ring directly above the diaphragm ring and diaphragm Mate the flat tabs of the Multi Tool through the slots of the purge button and into the retainer While holding the tool securely engaged turn the retainer clockwise until snug Do not overtighten 1 4 17 To complete the reassembly of the Air Source insert the pin 21 partly through one of the holes in the inflator barrel ofthe body Pull back the lip of the lower corrugate hose 16 to expose the crimped retainer of the lower cable 17 and pass the crimped loop over the pin 1 4 18 When the crimped retainer of the lower cable is se curely seated over the pin insert the pin through the opposite hole of the inflator barrel so that it is flush on both sides Fit the lower hose over the inflator barrel until it is mated flush with the contour of the body see Fig 30 Figure 30 1 4 19 Lightly fasten a tie strap over the lower hose so that it is seated evenly inside the groove near the end Pull the end of the tie strap sufficiently snug and snip the excess length with a small pair of scissors or wire cutters IMMERSION LEAK TEST 1 4 20 Connect the complete regulator assembly first stage and Air Source second stage with BC to a cylinder containing 3000 PSI of filtered air Fully inflate the BC and hold the Air Source and BC submerged in clean water for at least one minute During this time carefully observe the Air Source for any signs of bubble formation i
27. ite 31 see Lubricant and Cleaner Table 2 and agi tating gently for 3 4 minutes Cleaning of metal parts can also be done by soaking in a mild acetic acid solution distilled white household vinegar for 10 15 minutes Cleaning times in excess of those recommended may damage plated parts Never clean parts for longer than specified by the manufacturer of the solution used After completion of cleaning in any solution thoroughly rinse parts with clean fresh water and blow dry with low pressure 30 psig air Only brass plated brass and stainless steel parts should be immersed in chemical cleaning solutions Use hand and eye protection when handling chemical clean ing solutions 10 ea Quest Air Source Service and Repair Manual 1 2 3 After cleaning all parts should be thoroughly rinsed in fresh water and dried with filtered low pressure 30 psig air Before performing any reassembly it is important to inspect all parts both new and those that are be ing reused to ensure that each part is clean and free of any contamination corrosion or blemish 1 2 4 O rings should be replaced at every servicing New O rings should be inspected for contamination and or imper fections and lightly dressed with a thin film of approved lubri cant prior to installation See Lubricant and Cleaner Table 2 Do not use any petroleum based lubricants or products or any ae
28. kwise to loosen and re move Set the screw aside and turn the body over to allow the washer 37a and oral seal assembly 37 to fall out of the large end Discard the oral seal assembly and do not attempt to reuse contain the oral seal washer key 737a It is impor tant to install this part however when replacing the oral seal assembly Units manufactured before October 1998 may not 1 1 30 While holding the oral valve button lightly depressed to prevent the ejection of parts apply a nut driver to the stem of the oral button poppet 23 While holding the nut driver se curely engaged turn the oral poppet counter clockwise to loosen and remove the oral bezel 25 see Fig 9 When the bezel has disengaged the body slowly relax the button to allow the button cover 22 button poppet 23 spring 24 and bezel to fall out Figure 9 1 1 31 Remove the button cover from the button poppet and closely inspect the cover to check for any signs of damage or wear including tears abrasion or decay If found discard the cover and do not reuse 1 1 32 Closely inspect the spring under strong magnification to check for any signs of damage or corrosion If it is found to be damaged bent or corroded discard it and do not reuse 1 1 33 Closely inspect the poppet for any signs of damage especially around the hex stem If it appears damaged due to stress or improper tool engagement disc
29. lar tool and set the pin and upper valve assembly aside 1 1 4 Rotate the purge button 48 as needed to align the two opposing slots with the slots in the diaphragm retainer 47 be neath it Mate the flat tabs of the Air Source Multi Tool P N 42315 through the slots of the purge button and into the dia phragm retainer see Fig 1 While holding the tool securely engaged turn the purge button and retainer counter clockwise to loosen and remove both parts as one assembly Figure 2 1 1 8 While holding the body secure place a 4 nut driver over the lock nut 44 of the valve poppet and slowly press in ward until the valve begins to exit the opposite end of the body see Fig 3 Be careful to avoid pressing it completely out Figure 3 1 1 9 When the crown housing 7 has appeared outside of the body firmly grasp the end between thumb and forefinger and gently pull it straight out to remove the entire valve module Figure 1 1 1 5 Inspect the retainer and purge button to ensure they are perfectly round and do not show any signs of deterioration or damage especially around the threads of the retainer If re placement of either part is necessary pull them apart by hand 1 1 6 Lift out the diaphragm 45 and diaphragm ring 46 and set the ring aside Closely inspect the diaphragm to ensure that it is perfectly round and free of any tears deterioration or other damage If damag
30. ly Tool Disassembly assembly adjustment of locknut Removal installation of inflation valve bezel amp quick disconnect fitting P N 42314 m Crown pre set E lt 5 Assembly installation of oral valve P N 42316 Quest Air Source Service and Repair Manual Lubricant Cleaner Silicone Grease food grade Chemical Bath Solution Acetic Acid Liquid dishwashing detergent diluted with warm water LUBRICANT AND CLEANER TABLE 2 Recommended Type Dow Corning 111 Oakite 31 50 50 mix distilled white vinegar and water Joy Application All O rings threaded metal parts as indicated Chrome plated brass brass and stainless steel parts Chrome plated brass brass and stainless steel parts General cleaning solution degreaser for plastic and rubber parts leak detection Source Dow Corning Corp Box 1767 T Midland MI 48640 800 248 2481 Oakite Products Inc 50 Valley Road Berkeley Heights NJ 07922 Local grocery stores Local grocery stores DO NOT use muriatic acid for the cleaning of any parts Muriatic acid even when strongly diluted can harm chrome plating and may leave a residue that is harmful to O ring seals and other parts Aerosol spray silicone should be avoided because 1 common aerosol propellants may attack plastic and rubber parts and 2 because only a slight amo
31. mportant to cor rectly identify each unit as instructed in the next step to determine whether it requires this upgrade The Air Source has undergone a design revision of 1 1 21 Closely examine the inner surface of the button cover and the top surface of the inflator bezel to determine whether these are current revision parts see Fig 7 If the inner surface of the button cover contains four raised dots and the top surface of the inflator bezel contains four bore holes they are of the current revision and can be reused if no signs of wear or dam age are visible If either of these cannot be identified as a cur rent revision part it is very important to discard and replace both ofthem as a set in addition to several other parts which are provided in the Revision B Upgrade Kit P N 42642 Revision A Revision B original do not reuse okay to reuse Figure 7 The new bezel and button cover Revision have been re vised to provide improved retention of the inflator button Do not attempt to reuse the original bezel or cover under any circumstances Doing so may cause the failure of the inflator valve assembly and could lead to a loss of buoyancy control Refer to Technical Bulletin dated November 3 1997 1 1 22 Closely inspect the spring under strong magnification to check for any signs of damage or corrosion If it is found to be damaged bent or corroded disc
32. nd the recessed hole on top While holding the retainer secure thread the valve core 32 by hand into the recessed hole and apply the Valve Core Tool P N 42303 to tighten it snug Do not overtighten the valve core into the retainer Doing so may strip the retainer s threads requiring its replacement 1 3 15 Install the O ring 30 over the positioning tabs and flush against the shoulder of the underside Install the O ring 29 over the stem of the retainer so that it seats flush against the base see Fig 16 T O rings Figure 16 1 3 16 Place the stem of the valve core retainer inside the open port of the body and gently align it so that the crescent shaped opening is centered above the crescent shaped recess ofthe body Press the retainer evenly into place so that both positioning tabs seat securely inside the slots of the body see Fig 17 Figure 17 1 3 17 Place the spring 33 directly over the valve core in the center of the valve core retainer 1 3 18 Insert the button cover 35 through the threaded side of the inflator bezel 36 so that the sealing lip ofthe cover 1 seated evenly inside the bezel Place the power inflator button 34 inside the button cover with the spring mating tap facing out To prevent the button cover from binding or crimp ing as the bezel is tightened into the body Sea Quest recommends wetting the button cover with iso
33. ndicating a leak especially around the in flator buttons and BC connections If a continuous leak is de tected the Air Source must be disassembled and examined for damage or contamination ofthe seals and seating surfaces Re fer to the Troubleshooting Table on page 18 and correct as needed 1 5 FLOW BENCH TESTING PROCEDURES for testing regulators If a test bench is not avail able instructions for performing a subjective breath ing test is provided in the following section Use eye protection while performing the testing procedure Airborne particles can cause eye injury calibrated test bench is the preferred air supply 1 5 1 Verify that the first stage regulator which the Air Source will be used with has been recently serviced and is adjusted to a stable intermediate pressure of 135 147 psi Ensure that the first stage is connected to the Air Source via the specialty quick disconnect low pressure hose and that a standard low pressure hose is installed to connect the first stage to the bench s inter mediate pressure gauge All other first stage ports must be sealed 1 5 2 Connect the first stage to the high pressure supply fitting on the test bench Connect the standard low pressure hose to the fitting provided on the test bench to measure intermediate pressure While watching the intermediate pressure IP gauge slowly open the air supply valve The gauge needle should stop
34. ng is aligned precisely with the body and carefully press the valve module straight inward Do not use force Closely inspect afterward to ensure the shoul der of the poppet housing fits squarely over the ledge inside the body and is not cocked to either side The end of the crown housing should also be flush with the outer surface of the body Figure 25 Do not install the filter 2 at this time Before proceeding check to ensure the quick dis connect fitting is a current revision part P N 15111 which is provided in the Revision B Upgrade Kit men tioned in Step 1 1 21 The current revision part has a larger flange which helps to prevent any damage that may be caused by overtightening Do not at tempt to reuse a Revision A fitting See Fig 26 Old x lt New smaller flange larger flange Figure 26 1 3 33 Remove the knob from the shaft ofthe Air Source Inline Adjustment Tool P N 41016 and pull the shaft completely out of the tool body Place the quick disconnect fitting 1 over the narrow end of the shaft with the nipple facing up and slide it down to the opposite end Then mate the male threads of the quick disconnect fitting over the crown housing and into the body and turn clockwise by hand to engage the threads 1 3 34 Place the narrower end of a modified drilled or cur rent purchased after July 1 1999 T Tool over the adjustment shaft and mat
35. pro pyl alcohol before inserting it into the bezel 1 3 19 Hold these parts together and position them centered directly above the inflator spring and valve core so that the spring mates over the tab ofthe inflator button Press the button and bezel straight down over the spring with thumb and forefin ger While holding the button depressed gently thread the be zel clockwise by hand into the body until lightly snug Apply the pins on the large end of the Air Source T Tool P N 42314 to the bezel While holding the tool securely engaged turn the bezel clockwise until it is flush with the surface of the body see Fig 18 Do not overtighten Closely inspect the button cover to ensure that it is seated evenly on all sides and does not ap pear to be cocked or partially unseated Figure 18 1 3 20 If the poppet guide 12 was removed from the poppet housing 11 it will be necessary to install a new replacement part into the recessed end of the housing Ensure that it is prop erly aligned with the stem facing in between the two crescent flanges and press it firmly into place 1 3 21 Lay the poppet seat 8 at an angle inside the head ofthe poppet and then pull back the edge on one side to release any air behind it while firmly pressing it into place Check to en sure it 15 seated completely flush with the outer rim of the pop pet on all sides and correct 1f needed before proceeding 1 3 22 Place t
36. rosol silicone sprays on any part of Sea Quest regula tors The petroleum base or propellant gas may attack or weaken plastic or rubber parts Refer to Table 2 for a list of approved lubricants 1 2 5 In addition to the O rings the following parts should be routinely replaced at the time of servicing e Sintered Filter 2 Poppet Seat 8 Clamp 19 Valve Core 32 Locknut 44 e Exhaust Valve Diaphragm 40 O rings and the above mentioned routine replacement parts are included in the Overhaul Service Kit P N 42608 1 2 6 The following parts should be closely inspected for the damage listed below Close inspection is best accomplished by using a jeweler s magnifying loop under bright lighting e Orifice Crown 4 Inspect the cone area for nicks scratches pitting or any defects in the plating Pay particular attention to the sealing edge of the cone e Poppet 9 Inspect for corrosion pitting scratches defec tive plating or excessive wear particularly inside and around the cavity which holds the LP seat e Springs 10 24 amp 33 Inspect for cracks or broken coils e Demand lever 42 Compare with new to inspect for bend ing distortion or deformities of the white friction button e Demand diaphragm 45 Inspect for cracking tears or pin holes To detect pinholes hold diaphragm up to a light source as you gently stretch the diaphragm Inspect the round plastic diaphragm plate for any evi
37. sealJuest Air Source Service amp Repair Manual for Authorized Sea Quest Service Centers Doc No 42965 Rev 8 99 01999 Sea Quest Inc Contents Introduction o eere ere tee ertet ape ee eta rte eie cee e ree 3 Safety Precautions Er eer ter eere edere eese a teda nn Eee Te er Ie E EY 3 G n ral Procedures er ere ero ete etre e cpt edie ine e pee pesce edente et ete es e etd codes 3 Maintenance Schedul s etie el Lin eter t eque dock anexos han natn beh tea orn eee 3 Initial Inspection and Pre Test e t e ea e re p reg epe edet ree ood 3 Work Area amp Required 4 Omri REMOVAL e HR trees 4 Table 1 Recommended Tools ta ee eee i eee ti rece eri oett eade Codd aecenas dade 6 Table 2 Lubricant amp C EAEE ng tailed ae ae lef et aider 6 Air Source Overhaul Procedures ene prt ter deu tiae Lee tas lees Ete Fabi lode de 7 T T Air Source Disassembly 2 nce me eade er se e poe e e e tte an edet ue 7 1 2 Cleaning Sc Inspection 9 1 3 Air Source Reassembly RM 10 1 4 Adjustment amp Assembly ione tete Ge E HR POR ERE RE EINER LR FEE ROS EN rade AERE 15 Elow testing Procedures rH e ERR e tte 16 IMEEM 16 Leak 17 Testing Without a Test Bench ss 17 Subjective Breathing Test o tee aeter onec ec ru eap er Cen dee
38. second stage should deliver air without excessive effort freeflow or fluttering of the second stage and the exhalation effort should also not be excessive If any problems are noted please refer to Trouble shooting Section VACUUM LEAK TEST 1 5 10 The following test helps verify that all diaphragms and other water sealing components are installed correctly Shut off the air supply to the first stage Purge the second stage so that there is no air pressure in the first or second stage Inhale gently on the second stage Do not inhale forcefully as this may suck in the exhaust diaphragm During inhalation you should not be able to feel any air flow If you are able to inhale even slightly there 1s a leak 1n the second stage most likely at the main dia phragm or the exhaust diaphragm Exhale normally You should not feel any restrictions to the exhalation Repeat this process several times The service repair adjustment and testing of the Air Source second stage inflation system is now complete If you have any questions on any of these procedures please contact Sea Quest at 877 253 3483 18 Quest Air Source Service and Repair Manual 1 6 AIR SOURCE TROUBLESHOOTING SYMPTOM Leakage or freeflow from second stage High first stage intermediate pressure should be 140 5 psi LP seat 8 damaged or worn Demand lever 42 or crown 4 adjusted incorrectly Demand lever 42 bent Crown 4 sealin
39. small pins into the holes of the quick disconnect fitting While holding the tool securely engaged turn the fitting counter clockwise to loosen and re move along with the adjustment shaft 1 4 11 Slide the quick disconnect fitting off the narrow end of the adjustment shaft and assemble the Inline Adjustment Tool with the shaft and knob before storing 1 4 12 Place the filter 2 inside the crown housing with the closed end facing in and lightly tamp it further inward to en sure it is seated evenly above the crown 1 4 13 Once again mate the male threads of the quick discon nect fitting over the crown housing and into the body and turn clockwise by hand to engage the threads Apply the T Tool to tighten the fitting clockwise only until it is snug and its flange is seated flush against the body see Fig 29 Do not overtighten Figure 29 16 ea Quest Air Source Service and Repair Manual 1 4 14 Install the diaphragm 45 into the body with the raised center facing up Check to ensure that it is evenly seated onto the shoulder at the base of the threads 1 4 15 Place the diaphragm ring 46 inside the body so that it is evenly seated directly over the diaphragm 1 4 16 Ifthe diaphragm retainer 47 and purge button 48 were separated fit the purge button into the center of the retaining ring and tamp down the outer edge until it snaps into place Align the opposing slots of both parts and lay the retain
40. the hoses carefully for any evidence of cracking tearing or ex cessive abrasion of the outer rubber covering Remove all of the hose protectors and examine the area around the metal fit tings for any damage to the hose Inspect the fittings for signs of excessive corrosion e All chrome plated parts Inspect for any excessive corro sion indicating weak or absent chrome plating Also look for any signs of peeling or flaking of the chrome plating e Regulator pre test A regulator pre test should include all tests outlined in the test section for each regulator A pre test will assist the technician in determining if there are any specific performance deficiencies not mentioned by the customer 4 ea Quest Air Source Service and Repair Manual INFREQUENTLY USED AIR SOURCES AND BUOYANCY COMPENSATORS Do not assume that the Air Source or buoyancy compensator is in good condition because of infrequent use or because it has been in storage Deterioration of the O rings and corrosion can still occur under these circumstances WORK AREA amp REQUIRED TOOLS Servicing and repair of the Sea Quest Air Source should be car ried out in a clean well lighted work area As each regulator is disassembled all parts should be kept separate from parts of other regulators Some special tools are required for proper disas sembly and reassembly ofthe Sea Quest Air Source Please see Table 1 page 5 for a list of these tools O RING REMOVAL
41. unt of silicone remains after the solvent evapo rates and provides no lasting benefit tion of the material Silicone rubber requires no lubrication or preservative treatment DO NOT apply silicone grease or Spray to silicone rubber parts Doing so will cause a chemical breakdown and premature deteriora ea Quest Air Source Service and Repair Manual AIR SOURCE 1 1 AIR SOURCE DISASSEMBLY 1 1 1 Closely examine the condition of the mouthpiece to en sure it is free of any tears or cuts that may cause leakage of water into the second stage or other discomfort If replacement is not needed it is not necessary to remove the mouthpiece from the body It may otherwise be removed by placing a wide blade screwdriver inside the mouthpiece just beneath one of the re tainers 28 While holding the body secure firmly press the flat of the screwdriver upward against the retainer until it exits the body and lift it out to remove Do not attempt to pry the retainer out from above Repeat the above procedure to remove the opposite retainer and twist the mouthpiece off of the body to remove Inspect the retainers to check for any signs of wear or damage and replace 1f found 1 1 2 Snip the clamp 19 which holds the spiral hose 16 onto the lower valve assembly and work the hose off the Air Source body 26 to expose the cable retaining pin 21 1 1 3 Press the pin out from one side with a pin punch or simi
42. waters e Rental use e Regular use in chlorinated pool water Recommended maintenance schedules are based on average use under normal conditions and assume that recommended pre ventative maintenance and storage procedures have been fol lowed as outlined in the Sea Quest owner s manuals Advise the customer that any adjustments or servicing on Sea Quest regulators and buoyancy compensator inflation systems must be performed by Sea Quest or by an Authorized Sea Quest Dealer that has attended a Sea Quest regulator service seminar INITIAL INSPECTION AND PRE TEST Prior to beginning the servicing of the Sea Quest Air Source a preliminary inspection and pre test of the entire breathing sys tem is recommended This will help the repair technician iden tify any problems that may affect the Air Source second stage Preliminary inspection should include e First stage inlet filter If the first stage inlet filter is discol ored or corroded the entire regulator should be completely ser viced Deposits of rust red powder or aluminum oxide gray powder on the filter may indicate that water has entered the SCUBA cylinder and caused internal cylinder corrosion The customer should be notified that their SCUBA cylinder s may be in need of visual inspection cleaning and testing Advise your customers to regularly inspect the inlet filter for any dis coloration or corrosion e High pressure HP and low pressure LP hoses Inspect
43. xit the valve body after it has been unthreaded The following step must be performed correctly in order to remove the crown without damaging its delicate sealing surface 1 1 13 When the crown has been unthreaded from the crown housing insert the large blunt end of the seal seat extractor P N 5116236 through the opposite end ofthe crown housing and gently press out the crown see Fig 5 Remove and discard the crown O ring 3 Figure 5 1 1 14 Closely examine the crown with the use of magnifier checking for any signs of nicks or other damage to the polished sealing surface If damage is found discard the crown and do not attempt to reuse Ifit is in reusable condition set it aside on a soft surface to prevent damage to the sealing edge 1 1 15 Place a finger over the open end of the poppet housing to prevent the ejection of spring loaded parts While holding the poppet housing secure apply a 4 socket with hand driver to the lock nut 44 and turn counter clockwise to loosen and remove the locknut lever 42 and washer 43 Discard the lock nut and do not attempt to reuse 1 1 16 Inspect the lever and washer for any signs of wear or damage If wear or damage is found replace these items and do not attempt to reuse 1 1 17 Turn the poppet housing over to allow the poppet 9 and spring 10 to fall out Closely inspect the poppet spring under strong magnification to check for any signs of d
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