Apeks TX40 & TX50
Contents
1. 1 Insert the stem of the valve lifter 6 into the center bore hole inside the low pressure side of the valve body 7 2 Lay the diaphragm 5 over the valve lifter inside the valve body and gently tamp it down below the threads until it is seated evenly on all sides 3 Place the spring carrier 4 in the center of the diaphragm Mate the larger diameter threads of the diaphragm clamp 24 onto the valve body and tighten the diaphragm clamp clockwise by hand until snug 4 Place the spring 3 inside the center of the diaphragm clamp so that it rests directly over the spring carrier 5 Mate the spring adjuster 25 into the center of the diaphragm clamp directly over the spring Apply a 6mm hex key to turn the spring adjuster clockwise to its correct preliminary setting until it is set ex actly 14 6mm below the rim of the diaphragm clamp see Fig 8 6 Turn the first stage over and carefully lower the sealing end of the HP valve 13 straight down over the pin of the valve lifter inside the high pressure side of the valve body 7 Install the small O ring 19 into the recess inside the top of the turret retaining bolt and tamp it down with a non metallic instrument to Figure 8 ensure it is seated evenly on all sides Next fit the larger O ring 15 Adjustment Screw Pre setting over the threads of the turret bolt so that it is seated evenly over the shoulder 8 Install the O ring 9 over the top of the valve body so t2. 7 which is located near the serial number DO NOT use a CO cartridge that has not been discharged Doing so may cause the cartridge to rupture possibly resulting in serious injury Figure 1 Removing Environmental End Cap gt Figure 2 Removing Spring Adjuster Figure 3 Removing Diaphragm Clamp Secure the vise mounting tool inside a bench vise so that the first stage is positioned standing vertical outside the vice with the envi ronmental end cap 29 facing up Mate the pin of the spanner tool P N AT30 into the bore hole of the environmental end cap While holding the spanner tool securely en gaged to prevent it from slipping turn the end cap counter clockwise to loosen and remove from the diaphragm clamp 24 below it see Fig 1 Remove and discard the hydrostatic diaphragm 28 Temporarily loosen the vise to turn the first stage over in order to remove the hydrostatic transmitter 26 Set the transmitter aside and re secure the first stage in the same position with the diaphragm clamp facing up Apply a 6mm hex key to the spring adjuster 25 inside the diaphragm clamp and turn the spring adjuster counter clockwise to loosen and remove see Fig 2 Lift out the spring 3 and examine it closely with the use of a magnifier to check for any signs of pitting rusting or other corrosion that permeates the surface of the metal Set the spring aside if it is found to be in reusable condition or replac
3. damage these components 2 Ifan ultrasonic cleaner is not available metal parts can be cleaned by soaking the metal parts in a chemical bath solution of Chromesafe see Lubricant and Cleaner Table 2 and agitating gently for 3 4 min utes Cleaning of metal parts can also be done by soaking in a mild acetic solution distilled white household vinegar for 10 15 minutes plated parts Never clean parts for longer than specified by the manufacturer of the solution used After completion of clean ing 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 chemi cal cleaning solutions Use hand and eye protection when handling chemical cleaning solu tions Cleaning times in excess of those recommended may damage 3 After cleaning all parts should be thoroughly rinsed in fresh water and dried with filtered low pressure 30 psig air parts both new and those that are being reused to ensure that each part is clean and free of any contamination corrosion or blemish Before performing any reassembly it is important to inspect all 4 All O rings should be replaced at every servicing New O rings should be inspected for contamination and or imperfections and lightly dressed with a thin film of approved lubricant prior to install
4. spray aerosol lubricants under any circumstances The aerosol propellant may damage the plastic and rubber com ponents of the regulator and the lubricant will quickly evaporate providing little or no lasting benefit Do not use any petroleum based lubricants or products or any aerosol sprays to lubricate or clean any part or component of Apeks regulators The petroleum base or propellant gas may attack or weaken the plastic or rubber parts Refer to Table 2 for approved lubricants Apeks regulators are intended for use in water tempera tures warmer than 45 F 7 C Colder water may cause regulators to be more sensitive to a freeflow condition and can lead to a situation that requires an appropriate response to prevent serious injury or death Users of Sea Quest regulators are advised to ensure that they are adequately trained to deal with a regulator in a freeflow condition or an out of air emergency before attempting to dive in a cold water environment Apeks Regulator Service and Repair Manual Sea Quest Part No N A TABLE 1 RECOMMENDED TOOLS APEKS DST FIRST STAGE Description Padded bench vise Application Assembly and disassembly of first stage 1003 95 Vise mounting tool Assembly and disassembly of first stage 9116236 Seal seat extractor Removal installation of seat crown AT30 Pin Spanner Wrench Removal installation of diaphragm clamp and e
5. the turret Discard the O Removing Diaphragm ring and set the thrust washer aside if it is in reusable condition Figure 4 12 Separate the spring and HP valve from the turret retaining bolt Dis card the HP valve and closely examine the spring with the use of a magnifier to check for any signs of pitting rusting or other corrosion that permeates the surface of the metal Set the spring aside if it is found to be in reusable condition or replace with new as needed 13 Remove and discard the two remaining O rings 15 amp 19 from the tur ret retaining bolt A caution Use only a brass or plastic O ring tool when removing O rings from the turret retaining bolt Use of a sharp steel instrument can easily scratch the O ring sealing surface which will result in a permanent leak that Figure 5 will require replacement of the part Removing Turret Retaining Bolt 14 Lift the turret off the valve body Remove and discard the O ring 9 15 Reposition the valve body inside the vice and secure it with the con nector Yoke or DIN facing straight up ured with a DIN or yoke connection and refer to the appropri Before proceeding determine whether the first stage is config ate disassembly procedure provided below 16 DISASSEMBLY OF YOKE CONNECTOR A Remove the yoke screw 33 from the yoke clamp 30 and re move the protective cap 31 Examine the condition of the spare O
6. 2 O ring AP1166 13 HP Valve AP1419 33 Yoke Clamp Screw AP1400 14 Spring AP1415 34 Decal AP5015 15 O ring AP1410 35 Disc Filter AP1406 16 Thrust Washer AP1414 36 Yoke Clamp Connector AP1407 17 Turret Retaining Bolt AP1486 37 O ring AP1409 18 O ring AP1438 38 Protective Cap DIN AP1264 19 O ring AP1299 39 O ring AP1166 20 1 2 Blanking Plug AP1487 40 Handwheel Connector AP1471 21 O ring AP1410 41 Handwheel 300 BAR AP1470 22 7 16 Blanking Plug AP1413 42 Conical Filter DIN AP1472 n s Overhaul Service Kit Yoke APO227 n s Overhaul Service Kit DIN AP0227 1 Items in bold are included in the Overhaul Service Kit Apeks Regulator Service and Repair Manual 19 Apeks TX40 TX 50 First Stage Schematic Drawing y f s p
7. a tor and disassemble the environmental kit to reset the intermedi ate pressure and repeat steps 6 7 After performing the overhaul and adjustment procedures outlined in the Apeks Second Stage Service amp Repair Manual connect the first and second stage regulators to perform the following tests 16 Apeks Regulator Service and Repair Manual 9 External Leak Test Connect the regulator to a cylinder which con tains 2 500 3 000 psi and open the cylinder valve to pressurize the system Submerge the cylinder and regulator in a test tank of fresh water and observe closely for up to one minute to check for the for mation of bubbles If a steady stream of bubbles is present the sys tem must be disassembled at the source to check sealing surfaces assembly sequence and component positioning in order to correct the problem s lator thoroughly with fresh water and blow outall residual mois ture with filtered low pressure 30 psi air Disassemble and remedy the problem referring to Table 3 Troubleshooting Before disassembling to correct any leaks rinse the entire regu 10 Subjective Breathing Test Purge the second stage to ensure that the volume of airflow is adequate to clear it of water Then breathe deeply from the mouthpiece A properly serviced and adjusted regulator should deliver a smooth uninterrupted airflow upon deep inhalation without excessive effort hesitation or freefl
8. agm clamp 29 loose Diaphragm 5 worn or damaged Diaphragm seating surface inside first stage valve body 7 damaged Turret retaining bolt O ring 15 damaged Tighten flush with valve body Replace diaphragm Replace with new Replace with new Entrance of water visible beneath hydrostatic diaphragm Hydrostatic diaphrag 28 worn or damaged Environmental end cap or diaphragm clamp damaged Replace with new Inspect both parts and replace with new as needed 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 18 Apeks Regulator Service and Repair Manual REGULATOR REPAIR AND REPLACEMENT PARTS APEKS TX40 TX50 FIRST STAGE Item Description Part Item Description Part 3 Spring AP1475 23 O ring AP1445 4 Spring Carrier AP1476 24 Diaphragm Clamp AP1473 5 Diaphragm AP1478 25 Spring Adjuster AP1474 6 Valve Lifter AP1479 26 Hydrostatic Transmitter AP1483 7 Valve Body AP1480 27 Decal AP1477 8 Distance Piece AP1446 28 Hydrostatic Diaphragm AP1482 9 O ring AP1420 29 Environmental End Cap AP1484 10 Turret AP1481 30 Yoke Clamp AP1403 11 3 8 Blanking Plug AP1408 31 Protective Cap AP1404 12 O ring AP1409 3
9. al number DO NOT use a CO cartridge which has not been discharged Doing so may cause the cartridge to rupture possibly resulting in serious per sonal injury 14 Secure the vise mounting tool inside a bench vise so that the first stage is positioned standing vertical outside the vice with the dia phragm clamp facing up 14 Apeks Regulator Service and Repair Manual 15 Mate the pin of the spanner tool into the bore hole of the diaphragm clamp While holding the spanner tool securely engaged to prevent it from slipping turn the diaphragm clamp clockwise to tighten until it is completely snug and flush metal against metal with the valve body see Fig 11 ronmental end cap until the final adjustment and testing proce Do not install the hydrostatic transmitter diaphragm or envi dures have been completed 16 Loosen the vise to turn the first stage over and re secure it so that the turret faces straight up Apply a torque wrench with 6mm hex key socket to tighten the turret retaining bolt to a torque measurement of f Figure 11 12 foot lbs Tightening Diaphragm Clamp 17 Reposition the first stage inside the vice and secure it with the con nector Yoke or DIN facing straight up Apply a torque wrench with a 34 box wrench torque adapter Yoke or 6mm hex key socket DIN See Fig 12 Tighten the connector to 12 foot lbs 18 Loosen the vice to remove the fi
10. ation See Lubricant and Cleaner Table 2 Do not use any petroleum based lubricants or products or any aerosol silicone sprays on any part of Sea Quest Apeks regulators The petro leum base or propellant gas may attack or weaken plastic or rubber parts Refer to Table 2 for a list of approved lubricants Apeks Regulator Service and Repair Manual 11 5 In addition to the O rings the following parts should be routinely replaced at the time of servicing e Diaphragm 5 e HP Valve Seat 13 e Hydrostatic Diaphragm 28 e Disc Filter Yoke Clamp Connector 35 e Conical Filter DIN Connector 42 All O rings and the above mentioned routine replacement parts are included in the Overhaul Service Kit P N APO227 6 The following parts should be closely inspected for the damage listed below Close inspection is best accomplished by using strong magni fication under bright lighting Valve Body 7 Inspect all cavities for any nicks scratches pitting or any defects in the plating Pay particular attention to the sealing edge of the valve cone and the diaphragm seating shoulder e Springs 3 amp 14 Inspect for signs of permanent corrosion including pitting or cracks in the surface of the metal Turret Retaining Bolt 17 Inspect the interior cavity for any nicks scratches pitting or any defects in the plating DIN or Yoke Connector 36 or 40 Examine the condition of the threads and the O ri
11. e intended to draw your attention to items of importance Definition of Warnings Cautions and Notes Indicates a procedure or situation that may result in serious 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 potential damage to the product or render the product unsafe if instructions are not followed cor rectly Nore Is used to emphasize important points and tips GENERAL PROCEDURES MAINTENANCE SCHEDULES Regulators are subjected to a variety of environmental el ements that over time can affect the performance of the product As an Authorized Sea Quest Apeks Dealer you are advised to inform your staff and customer that Sea Quest Apeks regulator require complete servicing at least once a year Under certain circumstances a complete ser vicing is required every 3 6 months Some of these cir cumstances are e Frequent or improper use e Inadequate routine freshwater rinsing e Regulator use in dirty or polluted waters e Rental use e Regular use in chlorinated pool water Recommended maintenance schedules are based on aver age use under normal conditions and assume that recom mended preventative maintenance and storage procedures have been followed as outlined in the Sea Quest Apeks owner s manuals Advise the customer that any adjustments or servicing on Sea Q
12. e with new as needed Mate the pin of the spanner tool into the bore hole of the diaphragm clamp While holding the spanner tool securely engaged to prevent it from slipping turn the diaphragm clamp counter clockwise to loosen and remove from the valve body along with the spring carrier 4 See Fig 3 Using a 5mm hex key install spare blanking plugs 11 into three of the four LP ports leaving the 1 2 LP port open while the other ports are sealed Direct a short burst of low pressure 50 psi air through the primary LP port to partially dislodge the diaphragm 5 from the valve body see Fig 4 Lift out the diaphragm and discard Remove the blank ing plugs that were installed in the previous step Apeks Regulator Service and Repair Manual DO NOT attempt to pry the diaphragm out of the valve body with a metal instrument Doing so will permanently damage the seating shoul der requiring replacement of the valve body 10 Remove the valve lifter 6 from the body and set aside Loosen the vise to turn the first stage over and re secure it so that the turret 10 faces straight up 11 Apply a 6mm hex key to the turret retaining bolt 17 and turn the bolt counter clockwise to loosen until it has completely disengaged from the threads of the valve body see Fig 5 Carefully lift out the retaining bolt along with the spring 14 and HP valve 13 Remove the thrust washer 16 and O ring 18 from
13. hat it is seated evenly over the seating shoulder Fit the turret 10 straight down over the body being careful to avoid unseating the O ring 9 Lay the thrust washer 16 inside the center recess of the turret fol lowed by the O ring 18 Check to ensure that both items are seated evenly on all sides 10 Fit the spring 13 over the small end of the turret retaining bolt Then carefully mate the retaining bolt with spring straight down through the center of the turret and into the valve body over the stem of the HP valve Press down with the palm of one hand to compress the Apeks Regulator Service and Repair Manual 13 Figure 9 Installing Yoke Clamp Assembly Figure 10 Installing DIN Connector Assembly spring over the HP valve While maintaining downward pressure turn the retaining bolt clockwise to engage the threads of the valve body and continue turning by hand until it is lightly snug 11 REASSEMBLY OF YOKE CONNECTOR A Lay a new disc filter 35 inside the yoke clamp connector 36 and press it firmly into place with the use of a wooden or plastic dowel so that it is seated evenly on all sides B Install the O ring 37 into the recess at the base of the yoke clamp connector C Insert the yoke clamp connector through the bottom of the yoke clamp 30 and place the distance piece 8 over the end of the connector with the flat surface held flush against the flat bottom of the yoke clamp see Fig 9 D W
14. he inlet pressure to between 2 500 3 000 psi while checking the IP test gauge once again to ensure that the intermediate pressure does not rise above 135 psi If the intermediate pressure rises above 135 psi immediately purge the second stage or re open the bleed valve of the test gauge and shut off the air supply Refer directly to Table 3 Troubleshooting and remedy as needed Repeat the adjustment procedure in step 4 to adjust the first stage intermediate pressure to exactly 135 psi Repeatedly purge the sec ond stage or open and shut the test gauge bleed valve at least 15 times to ensure that the intermediate pressure locks up consistently and re mains stable at 135 5 psi with no signs of creeping or fluctuation FINAL ASSEMBLY a While the regulator is still pressurized with 2 500 3 000 psi insert the stem of the hydrostatic transmitter 26 into the hex open ing of the spring adjuster b Lay the hydrostatic diaphragm 28 inside the environmental end cap 29 and tamp it down past the threads to ensure that it seats evenly against the sealing surface c Mate the environmental end cap onto the diaphragm clamp and turn it clockwise by hand until snug Apply the spanner tool to tighten the end cap clockwise until it is completely snug and flush metal against metal with the diaphragm clamp d Cycle the regulator to ensure that the intermediate pressure has not dropped below 135 psi If necessary depressurize the regul
15. hile holding the yoke clamp connector and distance piece to gether so that the curvature of the distance piece fits against the valve body mate the connector into the valve body and turn it clockwise by hand until snug E Install a new spare O ring 32 onto the protective cap 31 and fit the loop end onto the groove at the top of the yoke clamp Install the yoke clamp screw 33 into the yoke clamp but do not seal the protective cap at this time 12 RESASSEMBLY OF DIN CONNECTOR A Install both O rings 37 amp 39 onto the handwheel connector 40 B Insert the small end of the conical filter 42 through the small O ring and into the threaded end of the handwheel connector being careful to avoid pressing the filter too far past the O ring which will cause it to become unseated C Mate the handwheel connector through the threaded end of the handwheel 41 and place the distance piece 8 over the end of the connector with the flat surface held flush against the flat bot tom of the handwheel see Fig 10 D While holding the handwheel connector and distance piece to gether so that the curvature of the distance piece fits against the valve body mate the connector into the valve body and turn it clockwise by hand until snug 13 Install a vise mounting tool P N 1003 95 or a discharged CO car tridge P N 7039 09 connected to a HP port adapter P N 1020 85 into the HP port of the valve body 7 which is located near the seri
16. me 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 INFREQUENTLY USED REGULATORS Do not assume that the regulator is in good condition be cause 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 regulator should be carried out in a clean well lighted work area As each regulator is dis assembled all parts should be kept separate from parts of other regulators Some special tools are required for proper disassembly and reassembly Please see Table 1 page 5 for a list of these tools O RING REMOVAL 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 recommends that all O ring removal tools should be made of either 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 lubricated only with a very light film of grease Do not use
17. ment exactly 1 4 6mm below the top rim of the diaphragm clamp 24 See Fig 13 3 Connect the first stage to a filtered air source of 500 psi and slowly pressurize the first stage While closely monitoring the IP test gauge to ensure that the intermediate pressure does not rise above 120 psi slowly turn the knob of the bleed valve clockwise until it is com pletely shut Apeks Regulator Service and Repair Manual 15 Figure 14 Tightening Environmental End Cap If a second stage is not connected to the first stage and the intermedi ate pressure rises above 200 psi immediately reopen the bleed valve of the test gauge and shut off the air supply Refer directly to Table 3 Troubleshooting and remedy as needed before proceeding further 4 When the intermediate pressure has stabilized below 120 psi apply a 6mm hex key to turn the spring adjuster clockwise in small incre ments of adjustment While turning the spring adjuster it is impor tant to simultaneously purge the second stage or briefly turn the test gauge bleed valve open and shut Monitor the test gauge while ad justing in this manner until the intermediate pressure locks up be Failure to cycle the regulator during adjustment can result in a false reading of the intermediate pressure tween 115 120 psi A caution When the intermediate pressure has been determined to be stable at 120 psi or less increase t
18. nd cap N A 1 4 wood or plastic dowel Removal of disc filter N A 1 2 wood or plastic dowel Installation of disc filter N A omm hex key amp hex key socket Removal installation of blanking plugs N A 6mm hex key amp hex key socket Removal installation of spring adjuster turret bolt N A 3 4 box wrench torque adapter Installation of yoke clamp connector N A 0 120 inch lbs torque wrench Small fittings N A 10 50 foot lbs torque wrench Large fittings 1116 10 P 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 Apeks Regulator Service and Repair Manual Lubricant Cleaner Christo Lube Chemical Bath Solution Liquid dishwashing detergent diluted with warm water TABLE 2 LUBRICANT AND CLEANER Recommended Type MCG 111 Chromesafe 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 Lubrication Technol
19. ng sealing groove at the base for any signs of damage DIN Handwheel 41 Examine the condition of the threads for any signs of damage 7 If any of the listed parts show any damage they must be replaced with new 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 gall ing cross threading or damage to the chrome plating If any parts show damage or excessive wear they must be replaced with new 12 Apeks Regulator Service and Repair Manual REASSEMBLY PROCEDURES parts both new and those that are being reused to ensure that every part and component is perfectly clean and free of any dust corrosion or blemishes Before dressing each O ring with Christo Lube check to ensure it is clean supple and free of any blemish Use only genuine Apeks parts subassemblies and components when ever assembling any Apeks product DO NOT attempt to substitute an Apeks part with another manufacturer s regardless of any similarity in shape size or appearance Doing so may render the product unsafe and could result in serious injury or death O Before performing any reassembly it is important to inspect all
20. ogies 310 Morton Street Jackson OH 45640 800 477 8704 Sea Quest Aqua Lung America P N 0201 05 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 amount 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 Apeks Regulator Service and Repair Manual DISASSEMBLY PROCEDURES 1 Before disassembling the first stage remove the low pressure second stage hoses with a 6 open end wrench and the low pressure infla tor hose with a 6 or 12 open end wrench Remove the high pres sure hose with a open end wrench or the high pressure port plug with a 5mm hex key Remove and discard the O rings from the male fittings of each hose Install a vise mounting tool P N 1003 95 or a discharged CO car tridge P N 7039 09 connected to a HP port adapter P N 1020 85 into the HP port of the valve body
21. ow If any abnormalities or problems occur refer to Table 3 Troubleshooting This concludes the annual service procedures for the Apeks DST Dry Sealed Turret First Stage Regulator Apeks Regulator Service and Repair Manual 17 TABLE 3 DST FIRST STAGE TROUBLESHOOTING SYMPTOM Restricted airflow high in halation resistance through entire system 1 2 3 CAUSE Cylinder valve not completely opened Cylinder valve requires service Disc filter 8 is contaminated Insufficient intermediate pressure ACTION REQUIRED Open valve check fill pressure Connect to a different cylinder Replace with new See below High or unstable intermediate pressure First stage improperly adjusted HP valve seat 13 damaged or worn Turret retaining bolt O ring 19 damaged or worn Turret retaining bolt 10 damaged Sealing surface of HP valve body 7 damaged Valve spring 14 weakened or damaged Readjust spring adjuster 25 Replace HP valve seat Replace O ring Replace with new Replace with new Replace with new Low intermediate pressure First stage improperly adjusted Main spring 3 damaged Diaphragm clamp 29 loose Readjust spring adjuster 25 Replace with new Tighten flush with valve body External air leakage Immersion Test Or hydrostatic diaphragm is abnormally distended or burst Diaphr
22. ring 32 and replace as needed B Apply a 3 4 box wrench to the yoke clamp connector 36 See Fig 6 Using firm steady force turn the connector counter clockwise to loosen and remove from the valve body and yoke clamp Lift the connector and clamp straight off the valve body together with the distance piece 8 Separate these items and set the clamp and distance piece aside Figure 6 Removing Yoke Connector Apeks Regulator Service and Repair Manual It is important that the wrench is securely seated over the entire hex surface of the yoke clamp connector to prevent any damage to the part Do not use impact to loosen C Remove and discard the O ring 37 from the base of the yoke clamp connector Stand the connector on a flat surface with the disc filter 35 facing down Insert a 4 wooden or plastic dowel and tap out the filter with a small mallet 17 DISASSEMBLY OF DIN CONNECTOR Figure 7 Removing DIN Connector A Remove the protective cap 38 from the threads of the handwheel 41 Apply a 6mm hex key to the hand wheel con nector 40 and turn it counter clockwise to loosen and remove together with the handwheel and distance piece 8 See Fig 7 Remove both O rings 39 amp 37 and the conical filter 42 from the handwheel connector Discard these items and do not reuse Closely inspect the condition of the handwheel connector includ ing the thread and the sealing areas of both O
23. rings Replace the part if any damage is found or set it aside to be reused Closely inspect the threads of the handwheel to ensure they are free of any burrs or other damage that could prevent proper thread ing Replace the part if damage is found or set it aside to be reused 18 Loosen the vice to remove the valve body and remove the vise mount ing tool Remove all remaining blanking plugs and remove and dis card their O rings 19 Under adequate lighting and magnification closely inspect the con dition of the sealing crown inside the valve body to check for any scratches corrosion or other signs of damage This concludes the disassembly procedures 10 Apeks Regulator Service and Repair Manual CLEANING amp INSPECTION PROCEDURES 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 thoroughly rinsed in clean fresh water and dried with filtered low pressure 30 psig air After an initial cleaning in warm soap and water solution metal parts should be cleaned in an ultrasonic cleaner using the appropriate ultrasonic clean ing solution see Lubricant and Cleaner Table 2 moved before cleaning in an ultrasonic cleaner or chemical bath O Be sure all O rings and other rubber or plastic parts are re Cleaning solutions may
24. rst stage and remove the vise mount ing tool Install all O rings 12 21 23 onto all hoses and port plugs 11 20 22 Install all LP and HP hoses and port plugs into the valve body and turret and tighten the port plugs clockwise until snug Ap ply a torque wrench with respective crow foot to tighten each hose at the first stage fitting to a torque measurement of 40 5 inch pounds FINAL ADJUSTMENT AND TESTING PROCEDURES 1 Connect the intermediate pressure test gauge either to a quick dis connect inflator hose or to the female fitting of a second stage LP hose depending on the connection of the test gauge Check to ensure there are no open ports and that all hoses are securely connected at both ends with no open fittings Figure 12 Torqueing Yoke Connector A caution Before testing intermediate pressure it is important to connect the first puna stage to a fully assembled and properly adjusted second stage This ee NS v gt 4 e will provide a safety relief valve if the intermediate pressure exceeds 155 170 psi If a properly adjusted second stage is not available be sure to open the bleed valve of the test gauge before pressurizing Fail ure to relieve intermediate pressure in excess of 400 psi may result in damage to the test gauge or LP hose Figure 13 2 Check to ensure that the first stage spring adjuster 25 is correctly set Adjustment Screw Pre setting to its preliminary adjust
25. sealjuest Apeks TX40 TX50 DST First Stage Service amp Repair Manual for Authorized Sea Quest Service Centers 2000 Sea Quest Inc Contents O RS E Safety PRECAUTIONS a i General Procedures iii io Maintenance Sh ls ii ic 3 Initial Inspection ad Presta 3 Infrequenthy Us d Res atada dadas 4 Work Area amp Required TOONS cuna ltda 4 Orina Remo A A sat Wee A A A al 4 LD COM a naa 4 Table 1 Recommended Tools ooooocconcnnannonnoocconennannonooccnnonaannonenooconnnncannanencccncnnacnnanenoccccnncananneniccccinnass Y Table 2 Lubricant and Cleaner scccccccccssssssssscosccscescssenssccsccsccscssessscosccscescssessscosccscsscssesesccccssceccsees Disassembly Proc dr ad Disassembly of YOKE CONEA aa 8 Disassembly DIN od e 9 Cleaning amp Inspection Procedures sesscissccscsssssiciccceuecaccnsstenscoceadssconscecccnuscsasssssosscosussasssssscsdecsesessoeesesvotsiceced LO Reassemibly Procedures A a Ll Reassembly of Yoke Connector oye Sagas eo eas Oe Seep are a aaa Gat Sea ga ee la OG aca 13 Resassembly of DIN CORA a sane lada EOS 13 Final Adjustment and Testing Procedures ooonoonnoonnoconnconnnonnncnnnoconoconaconnnconnccnancooacononconcncnnnconacoranoonaccnnaoso 14 Final Assembly erriari teia e sa Meira tn ante he rita ATAR Sin ea ra eae Salen lea E TER 15 Fable 3 Troubleshooting a a ta LT Repair amp Replacement Part iii sd ES aa WEN 5c5ssichscassccssantsecon
26. ssssanasnnstachoukssauns pues sdnvansvonannyetacasdeeuacee opks skp sketencdansbacbecatoeesosibeadasassosbesmnsy LO Apeks Regulator Service and Repair Manual INTRODUCTION Apeks regulators are the product of many years of research and development Apeks has utilized proven materials and design to maximize reliability and performance This manual is intended only as a guide for the experi enced repair person that has completed a Sea Quest Apeks service and repair seminar It is not intended to educate inexperienced repair personnel or the consumer in all as pects of Apeks regulator repair Sea Quest Apeks repair seminars are available periodically to Authorized Sea Quest Dealers Servicing and repair at the repair shop level mainly involves cleaning inspection adjustment and re placement of worn parts If you have any questions on any of the procedures in spections or tests please contact Sea Quest at 877 253 3483 SAFETY PRECAUTIONS This manual provides step by step instructions for the dis assembly inspection cleaning reassembly and testing of the Apeks TX50 and TX40 first stage regulator It is rec ommended that all steps are followed in the order given Read each section completely PRIOR to beginning work described in that section This will familiarize the repair technician with important precautions to take during each service procedure Pay close attention to all WARNINGS CAUTIONS and NOTES that ar
27. uest Apeks regulators must be performed by Sea Quest or by an Authorized Sea Quest Apeks Dealer that has attended a Sea Quest authorized service seminar INITIAL INSPECTION AND PRE TEST Prior to beginning the servicing of the regulator a pre liminary inspection and pre test of the entire breathing sys tem is recommended This will help the repair technician identify any problems that may affect the first stage Preliminary inspection should include e First stage inlet filter If the first stage inlet filter is discolored 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 discoloration or corrosion e High pressure HP and low pressure LP hoses Inspect the hoses carefully for any evidence of cracking tearing or excessive abrasion of the outer rubber cover ing Remove all of the hose protectors and examine the area around the metal fittings for any damage to the hose Inspect the fittings for signs of excessive corrosion 4 Apeks Regulator Service and Repair Manual e All chrome plated parts Inspect for any excessive cor rosion indicating weak or absent chro
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