Fig 33. Pressure system disassembled, showing nomenclature and Chemical Warfare Service stock numbers for requisitioning spare parts.
(1) Release of pressure. Be sure all pressure has been released from the pressure system before disassembling or removing any part or assembly of the pressure system. To release pressure, operate fuel valve ([Par 26]) and hold open until pressure is exhausted. As an added precaution, personnel should avoid facing the connections when disconnecting parts or assemblies.
(2) Removal procedure. After release of all pressure:
(a) Loosen the clamp from the valve flexible shaft.
(b) Using wrench, unscrew the large hex nut which holds the flexible shaft on the pressure-tank valve.
(c) Pull the valve flexible shaft and handle free of the valve.
(d) Using wrench, unscrew the flared tube nut on the regulator tube adjacent to the pressure-tank valve.
(e) Open pressure-tank clamp ([Fig 39]) and swing clamp strap outward.
(f) Remove the pressure tank together with the pressure-tank valve and check valve.