MSA Firehawk Responder Series Maintenance And Repair Manual Download Page 4

FIREHAWK RESPONDER SECOND STAGE REGULATOR

DISASSEMBLY

Removing the Regulator Cover and Spring

1. Remove the regulator cover.

a. Press and hold the

release buttons while
pressing the
regulator housing
retaining latches.

b. Allow the cover to

drop into your palm.

c. Remove the spring

from the regulator
cover.

Note:

Do not stretch the spring.

Removing the Diaphragm

1. Remove the CBRN Shield.

Handle the CBRN shield by the rim only.

a. Lift the CBRN

shield assembly
and spring cap
off of the diaphragm
assembly.

b. Lift the spring cap

off of the CBRN
shield assembly.

4

TAL 016 (L) Rev. 3 - 10096394

Table of Contents

Disassembly

......................................................................4

Regulator Cover and Spring ...........................................4
Diaphragm ......................................................................4
Bypass Assembly ...........................................................5
Bypass Screen................................................................6
Valve Assembly...............................................................6
Regulator Housing Buttons ............................................6
Seal Ring.........................................................................7

Inspection of the Valve Fork for Proper Height

............7

Acceptable Valve Fork Heights ......................................8
Adjusting Valve Fork Height for Proper Performance ....8

Adjustment of Valve Fork if Above the Maximum ..........8
Adjustment of Valve Fork if Below the Minimum ...........8

Reassembly

.......................................................................9

Seal Ring.........................................................................9
Regulator Housing and Buttons .....................................9
Valve Assembly...............................................................9
Bypass Screen..............................................................10
Bypass Assembly .........................................................10
Diaphragm ....................................................................12
Regulator Cover............................................................12

Latches

Spring

Summary of Contents for Firehawk Responder Series

Page 1: ...TAL 016 L Rev 3 MSA 2010 Prnt Spec 10000005389 I Mat 10096394 Doc 10096394 Firehawk Responder Second Stage Regulator MAINTENANCE AND REPAIR...

Page 2: ...ack of 10 Height Gauge Kit 10090457 10090457 Height Gauge for P N 10087295 Firehawk Responder Second Stage Regulator Overhaul Kit 10097667 10092041 Diaphragm Spring 10047528 Spring Cap 10044026 CBRN S...

Page 3: ...SECOND STAGE REGULATOR Christo Lube Loctite 271 Christo Lube Christo Lube Christo Lube Christo Lube Christo Lube 1 2 3 4 5 6 7 7 8 9 8 9 10 10 11 12 13 17 15 18 19 20 21 22 23 24 25 16 14 26 3 TAL 01...

Page 4: ...p off of the diaphragm assembly b Lift the spring cap off of the CBRN shield assembly 4 TAL 016 L Rev 3 10096394 Table of Contents Disassembly 4 Regulator Cover and Spring 4 Diaphragm 4 Bypass Assembl...

Page 5: ...ve the U clip 3 Unscrew the bypass assembly and pull the bypass assembly and housing from the valve housing 4 Secure the bypass knob in a vise Note Use rubber pads or electrical tape on the vise to pr...

Page 6: ...ing 3 Remove the old screen and discard Note Do not puncture the screen The o ring removal tool can be used to rotate the screen counterclockwise until it s loose Removing the Valve Assembly 1 Remove...

Page 7: ...t valve fork height with the valve fork pointing toward you The valve fork assembly must move up and down freely 1 Press the top of the valve fork to check movement 2 Use the Height Gauge to verify th...

Page 8: ...kwise to lower the fork Turn the Adjustment Wheel counterclockwise to raise the fork Above maximum height Top of fork above top of acceptable range 1 Slide the adjustment wheel and valve housing sligh...

Page 9: ...sing Buttons O Ring P N 10023509 O Ring P N 10037951 1 Install new o rings on the button posts a Protect the o rings by covering the post with tape or thin pieces of paper b Apply a thin film of Chris...

Page 10: ...e P N 604070 to a new o ring P N 632736 4 Install the o ring 5 Remove the protective tape or paper 6 Carefully screw the nipple into the hose union 7 Use a 3 4 wrench to hold the hose union and a 3 4...

Page 11: ...or paper prior to assembly 3 Carefully install the bypass assembly Note To prevent damage to the o ring use extra caution when installing the bypass assembly Check for evidence of o ring damage befor...

Page 12: ...te While installing the shield the valve fork must be in the UP position Squeeze the buttons to ensure that the fork is in the up position 5 Apply a thin coating of Christo Lube P N 604070 to the bott...

Page 13: ...regulator housing until it locks Double check proper engagement by pulling on the regulator cover Ensure that the regulator cover is securely attached to the regulator housing Failure to follow this w...

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