MSA AirHawk II Maintenance And Repair
Air mask second stage regulator
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Also See for AirHawk II:
- Operation and instructions manual (60 pages) ,
- Maintenance and repair (14 pages)
Related Manuals for MSA AirHawk II
Summary of Contents for MSA AirHawk II
- Page 1 Maintenance and Repair AirHawk® II Air Mask Second Stage Regulator Order No.: 10104241/02 Prnt. Spec. 10000005389(I) MSAsafety.com...
- Page 2 Please read and observe the WARNINGS and CAUTIONS inside. For any additional information relative to use or repair, call 1-800-MSA-2222 during regular working hours. 1000 Cranberry Woods Drive Cranberry Township, PA 16066 Phone 1-800-MSA-2222 Fax 1-800-967-0398 For your local MSA contacts please go to our website www.MSAsafety.com © MSA 2018. All rights reserved...
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Page 3: Table Of Contents
Contents AirHawk II Second Stage Regulator .......... - Page 4 G1 AirHawk II Regulator ............
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Page 5: Airhawk Ii Second Stage Regulator
AirHawk II Second Stage Regulator AirHawk II Second Stage Regulator Second Stage Regulator Replacement Kits Description Item Part Number Valve Assembly 10087295 10087305 Housing Assembly 10087301 FireHawk Air Mask Second Stage Regulator Overhaul Kits Description Item Part Number O-ring (2 required) -
Page 6: Parts List And Exploded View
AirHawk II Second Stage Regulator Parts List and Exploded View 1.5.1 Non-CBRN Firehawk Second Stage Regulator Christo-Lube Christo-Lube Christo-Lube Christo-Lube Christo-Lube Christo-Lube Christo-Lube AirHawk® II Air Mask... - Page 7 AirHawk II Second Stage Regulator Item Description Part number O-ring, Silicone, Red 697453 O-ring, Fluro, Blue 634669 Diphragm, Silicone 10018540 U-clip 10018547 Retainer, Spring, Purge Cover ONLY 10018622 Knob, Bypass 10018774 Spring, Button 10018965 Body, Bypass 10018966 Insert, Bypass 10018971...
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Page 8: Cbrn Firehawk Second Stage Regulator
AirHawk II Second Stage Regulator 1.5.2 CBRN Firehawk Second Stage Regulator Christo-Lube Christo-Lube Christo-Lube Christo-Lube Christo-Lube Christo-Lube Christo-Lube Christo-Lube AirHawk® II Air Mask... - Page 9 AirHawk II Second Stage Regulator Item Description Part number O-ring, Silicone, Red 697453 O-ring, Fluro, Blue 634669 Diphragm, CBRN 10039172 U-clip 10018547 Retainer Spring (purge cover only) 10018622 Knob, Bypass 10018774 Spring, Button 10018965 Body, Bypass 10018966 Insert, Bypass 10018971...
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Page 10: General Instructions
General Instructions General Instructions WARNING! Only certified C.A.R.E. technicians are approved to do the procedures in this manual. Before starting any repair or maintenance procedure, make sure all pressure has been released from the SCBA. Trying to disassemble a pressurized SCBA can cause parts to become airborne projectiles. Failure to follow these warnings can result in serious personal injury or death. -
Page 11: Maintenance And Repair Procedures
Maintenance and Repair Procedures Maintenance and Repair Procedures Disassembly 3.1.1 Removing the Regulator Cover and Spring Remove the regulator cover. (1) Press and hold the release buttons while pressing the regulator housing retaining latches. NOTE: Do not touch the cover while pressing the release buttons and retaining latches. -
Page 12: Disassembling The Bypass And Hose With Swivel
Maintenance and Repair Procedures CBRN only: Lift the spring cap off the CBRN Shield. Roll the edge off the regulator housing. Slide the diaphragm away from the bypass handwheel off the valve fork. 3.1.3 Disassembling the Bypass and Hose with Swivel Remove the regulator cover, spring, and spring retainer. - Page 13 Maintenance and Repair Procedures Remove the bypass knob. Remove the bypass body U-clip. Remove the bypass and hose assembly by pulling the hose out of the bypass body. Remove the hose assembly o-ring. Be careful not to scratch the o- ring groove.
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Page 14: Removing The Valve Assembly
Maintenance and Repair Procedures Use the plastic stick or small flat blade screwdriver to push the screen out of the bypass body. Inspect the bypass screen. a)Replace the screen if damaged. (10) Remove all dirt and foreign matter before reinstalling the screen. 3.1.4 Removing the Valve Assembly Remove the regulator cover, spring, and spring retain- er. -
Page 15: Disassembling The Regulator Housing Buttons
Maintenance and Repair Procedures 3.1.5 Disassembling the Regulator Housing Buttons (1) Remove the old O-rings. Be careful not to scratch the o-ring groove. Discard the old O-ring. (3) The spring will push the button from the housing. Be careful not to lose the spring 3.1.6 Removing the Seal Ring (1) Use the o-ring removal tool to remove the seal ring. -
Page 16: Valve Fork Height
Maintenance and Repair Procedures 3.1.7 Valve Fork Height 3.1.7.1 Inspection of the Valve Fork for Proper Height Inspect and adjust valve fork height with the valve fork pointing toward you. The valve fork assembly must move up and down freely. Press the top of the valve fork to check movement. - Page 17 Maintenance and Repair Procedures 3.1.7.2 Acceptable Valve Fork Heights Nominal height Maximum Height Minimum Height Top of fork level with center of Top of fork level with top of Top of fork level with bottom of acceptable range acceptable range acceptable range Normally the valve fork will not require adjustment.
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Page 18: Reassembly
Maintenance and Repair Procedures Slide the adjustment wheel and valve housing back into place. Ensure that the valve lever and fork do not bind. The fork should move up and down easily. Valve Fork Below the Minimum Below minimum height – Top of fork is below accept- able range. Slide the adjustment when and valve housing slightly away from the valve support to allow the adjustment wheel to rotate. -
Page 19: Installing The Regulator Housing And Buttons
Maintenance and Repair Procedures 3.2.2 Installing the Regulator Housing and Buttons (1) Apply a thin film of Christo-Lube lubricant ) to the new O-rings. (2) Install new o-rings on the button posts. Install the springs. Align the buttons. NOTE: With the bypass at 9:00 o’clock, the slide button is at 12:00 o’clock and the housing button is at 6:00 o’clock. -
Page 20: Installing The Bypass And Hose Assembly
Maintenance and Repair Procedures Install a new o-ring. a)Protect the o-ring with tape or a thin piece of paper. b)Apply a small amount of Christo-Lube lubricant to the o-ring. c)Slip the o-ring over the thread. d)Remove the protective tape or paper. Reinstall the bypass insert into the bypass port with the slot facing out. - Page 21 Maintenance and Repair Procedures (2) Apply a thin film of Christo-Lube lubricant to a new O-ring. (3) Install the new O-ring into the first groove of the hose swivel. (4) Apply a thin film of Christo-Lube lubricant into the second groove of the hose swivel.
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Page 22: Installing The Diaphragm
Maintenance and Repair Procedures Insert the bypass body and hose assembly into the regulator housing so that the bypass body tabs line up with the slots in the bypass insert. Ensure that the hose with swivel moves freely. (10) Slide the U-clip through the regulator housing. NOTE: The U-clip should slide through the regulator housing freely. -
Page 23: Installing The Regulator Cover And Spring
Maintenance and Repair Procedures (5) CBRN only: Place the CBRN Shield over the diaphragm assembly. (6) CBRN only: Replace the spring cap. (7) CBRN only: Tap lightly on the top of the spring cap to remove trapped air. 3.2.6 Installing the Regulator Cover and Spring NOTE: The solid regulator cover does not use a spring retainer. - Page 24 Maintenance and Repair Procedures Install the spring retainer. a) Pull the stem through the retainer. Double check proper engagement by lifting spring retainer. Push regulator cover, spring, and spring retainer onto regulator housing. Visually inspect the tabs. Make sure both are properly engaged.
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Page 25: G1 Airhawk Ii Regulator
G1 AirHawk II Regulator G1 AirHawk II Regulator Required Tools and Equipment Description Part Number O-ring removal tool 636060 Christo-Lube lubricant 604070 Loctite 243 10110981 Torque wrench, 60 - 300 in·lbf 10148007 Flat-blade screwdriver 3/4 in. crow foot wrench Replacement Kits 4.2.1 Non-CBRN, Model Number 7-2991-1... -
Page 26: Parts List
G1 AirHawk II Regulator Parts List AirHawk® II Air Mask... - Page 27 G1 AirHawk II Regulator Item Qty Description Part Number COVER, G1 REGULATOR NON-PURGE 10146190-SP COVER, G1 REGULATOR PURGE 10146212-SP RETAINER, SPRING 10146229-SP SPRING, PD 10180070 CAP, SPRING 10047528 SHIELD ASSEMBLY, FIREHAWK CBRN 10044026 DIAPHRAGM ASSEMBLY, NON-CBRN 10188499 DIAPHRAGM ASSEMBLY, CBRN...
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Page 28: Maintenance And Repair Procedures
Maintenance and Repair Procedures Maintenance and Repair Procedures Regulator Cover 5.1.1 Removing the Regulator Cover Release all pressure from the system. Refer to Section 2.1 "Releasing Pressure from the SCBA"for instructions. Put the regulator on a flat surface with the port side up. Press and hold the release buttons. -
Page 29: Installing The Regulator Cover
Maintenance and Repair Procedures 5.1.2 Installing the Regulator Cover WARNING! Make sure the U-clip in the regulator housing is in position before you attach the regulator cover. Make sure both retaining tabs are engaged correctly and the regulator cover is attached tightly to the ... -
Page 30: Regulator Bypass And Hose Assembly
Maintenance and Repair Procedures Push the regulator cover and attached spring and the spring retainer onto the regulator housing. Listen for a click when the retaining tabs engage correctly. (10) Make sure both retaining tabs are engaged correctly. Regulator Bypass and Hose Assembly 5.2.1 Removing the Regulator Bypass and Hose Assembly Remove the regulator cover. - Page 31 Maintenance and Repair Procedures Turn the bypass knob counterclockwise until it disen- gages from the regulator housing. Remove the bypass assembly, bypass knob, and plug from the regulator. NOTE: The bypass stem holds the plug in position. When the bypass stem is disengaged, the bypass knob is free. Use an O-ring removal tool to disengage and remove the U-clip from the bypass stem.
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Page 32: Installing The Regulator Bypass
Maintenance and Repair Procedures (13) Use an O-ring removal tool to remove the O-ring from the end of the hose assembly that connects to the bypass stem. (14) Discard the O-ring. (15) Disconnect the hose assembly from the pressure reducer. 5.2.2 Installing the Regulator Bypass Wind protective tape or a thin piece of paper around the threads of the bypass stem. - Page 33 Maintenance and Repair Procedures (11) Install the bypass stem on the hose assembly. (12) Install the U-clip that holds the bypass stem on the hose assembly. (13) Remove the protective tape or paper from the bypass threads. (14) Apply a thin layer of Christo-Lube lubricant to the threads of the bypass stem.
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Page 34: Regulator Spring And Spring Retainer
Maintenance and Repair Procedures Regulator Spring and Spring Retainer These procedures apply to purge and non-purge regulator covers. 5.3.1 Removing the Regulator Spring and Spring Retainer Remove the regulator cover. Refer to Section 5.1.1 "Removing the Regulator Cover" for instructions. Slide the spring retainer out of its position on the regulator. -
Page 35: Diaphragm
Maintenance and Repair Procedures Slide the spring retainer into position on the regulator cover. Install the regulator cover. Refer to Section 5.1.2 "Installing the Regulator Cover" for instructions. Diaphragm 5.4.1 Removing the Diaphragm Remove the regulator cover. Refer to Section 5.1.1 "Removing the Regulator Cover" for instructions. Remove the regulator spring and spring retainer. -
Page 36: Installing The Diaphragm
Maintenance and Repair Procedures 5.4.2 Installing the Diaphragm Apply a thin layer of Christo-Lube lubricant to the top rim of the regulator housing. Fold the edges of the diaphragm up so you can see the diaphragm tab. Push the regulator release buttons to make sure the valve fork is in the lifted position. -
Page 37: Installing The Valve Assembly
Maintenance and Repair Procedures 5.5.2 Installing the Valve Assembly Look at the side of the valve housing. Make sure the height line on the valve fork aligns with the top of the valve housing. If necessary, adjust the height of the valve fork. •... -
Page 38: Regulator Buttons
Maintenance and Repair Procedures Regulator Buttons 5.6.1 Removing the Regulator Buttons Remove the regulator cover. Refer to Section 5.1.1 "Removing the Regulator Cover" for instructions. Remove the valve assembly. Refer to Section 5.5.1 "Removing the Valve Assembly" for instructions. Remove and discard the retaining O-rings on the button posts. The springs will push the buttons from the regulator housing. -
Page 39: Regulator Seal Ring
Maintenance and Repair Procedures Make sure the buttons are in the following orientation: • Bypass in the 9:00 o'clock position • Clear button in the 12:00 o'clock position • Gray button in the 6:00 o'clock position Push each button in completely to make sure all operate correctly. -
Page 40: Installing The Regulator Seal Ring
Maintenance and Repair Procedures 5.7.2 Installing the Regulator Seal Ring WARNING! A regulator seal that is not engaged correctly can cause an air leak. Failure to follow this warning can result in serious injury or death. NOTE: Do NOT apply Christo-Lube lubricant to the regulator seal ring or O-ring. -
Page 41: Installing The Regulator Housing
Maintenance and Repair Procedures 5.8.2 Installing the Regulator Housing Install the regulator seal ring. Refer to 5.7.2 "Installing the Regulator Seal Ring" for instructions. Install the regulator buttons. Refer to 5.6.2 "Installing the Regulator Buttons" for instructions. Install the valve assembly. Refer to 5.5.2 "Installing the Valve Assembly" for instructions. Install the regulator bypass and hose assembly. - Page 42 For local MSA contacts, please visit us at MSAsafety.com Because every life has a purpose...