Removal of Exhaust Valve | Sherwood SR 7206 instruction

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2)Demand Valve Subassembly

11.If the subassembly shows salt or other mineral deposits that prevent the poppet from moving smoothly, it should be cleaned as an entire unit using an ultrasonic cleaner with a mild cleaning agent. If this fails to remove the deposits, the demand valve subassembly should be disassembled by unthreading the Lock Nut (9) from the Poppet (4). The disassembled parts may then be soaked in a mild solution of 50% white vinegar and scrubbed with a medium soft brush to remove deposits.

12.Remove the mouthpiece Boss Retaining Ring (15) using snap ring pliers with 45 degree angled cylindrical tips. Use of this tool enables you to spread the Retaining Ring and slip it over the Mouthpiece Boss (11). Remove and discard the o-ring (14). Gently clean the o-ring groove on the Mouthpiece Boss and inspect the groove for cuts, deep scratches or other damage. Replace it if it is damaged.

13.Remove the Exhaust Valve Cover (16) on each side of the Housing by grasping the cross bars on the cover by hand and gently unthreading. Gently remove each Exhaust Valve (17) by grasping the valve with the fingers and folding it in half. (Refer to Illustration 3). With the other hand grasp the stem of the valve and gently stretch it. This will allow you to pull the valve away from the Housing to remove it. Clean the surface of the housing where the Exhaust Valve seats. Inspect the seating surface under the valve for nicks, cuts or other damage that may prevent sealing of the exhaust valve. If these surfaces are damaged the Housing must be replaced. The valves are made of a durable material and should not require replacement unless they show signs of damage.

3)Removal of Exhaust Valve

14.Clean and rinse all parts in preparation for reassembly.

SR 7206 specifications

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