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8. Use a regulator support handle and a 15" adjustable wrench or bench vise to remove the cap
and pressure adjusting ring as a unit from the main body. Keep the wrench on the
adjusting ring flats, not on the cap flats, for this operation. This will ensure that the two units do
not separate (see Photo # 3).
9. Use a 15" adjustable wrench and a bench vise to separate the cap from the adjusting ring (see
Photo # 4).
10. Remove the piston and spring from the cap.
11. Remove the piston O-rings and discard them. Take care not to scratch the O-ring grooves in the
piston. Remove the piston seat by pushing through the stem with the Sherwood piston seat
removal tool (p/n TL112) from the large end. The seat will then pop out. Discard the old seat.
12.
If any grease or oil gets on the flow control element assembly in the face of the piston,
the air flow will be impeded.
a. Keep greasy fingertips away from the piston during servicing.
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Photo #3
Photo #4
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