Kirby Morgan 37 & 57
7.12.3 SuperFlow 450 Demand Regulator Bias Adjustment Field Service with Demand Regulator on Helmet
It is not necessary to remove the regulator from the helmet to perform field maintenance.
Tools Required:
1/4 inch Flat Blade Screwdriver on Torque Wrench 1” Open End Attachment on Torque Wrench 1/4” to 5/16” dowel rod sharpened by pencil sharp- ener.
Remove the screws and washers on either side of the cover.
Unscrew the cover retaining ring and remove the cover.
Remove the diaphragm and inspect it carefully. If it is torn or punctured it must be replaced.
The lock clip must be removed to service the internal
1)Remove the bent tube assembly from the helmet, per this chapter.
2)Remove the screws and washers on either side of the regulator cover.
2)Unscrew the cover retaining ring.
3)Remove the cover and diaphragm. Inspect the diaphragm for holes or tears. If it torn or punctured it must be replaced. Inspect the interior of the regulator for foreign matter and remove if necessary.
4)Carefully insert the tip of a flat blade screwdriver in the slot at the top of the lock clip to loosen it and slide the clip away from the regulator main tube.
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