5.2.7 For future reference, look at the lever (19) at this time. Notice how the pivot end of the lever is held into
the valve tube (21) by two plastic flanges on the housing. Note this positioning for re-assembly.
5.2.8 Hold the diaphragm up to a light source. Gently stretch the diaphragm and look for tears or pinholes.
If any are found, replace the diaphragm.
5.2.9 Loosen and remove the nut (7) from the valve tube (21)
5.2.10 Remove the plastic bushing (8) from the valve tube.
5.2.11 Remove and discard the O-ring (9) from the valve tube.
5.2.12 Use a 1/4” Allen Wrench to turn the black plastic spring adjust plug (29) fully counter clockwise until
it comes to its stop. Do not use an unreasonable force to do this. Stop turning the plug as soon as a resis-
tance is felt.
5.2.13 Depress the lever (19) fully onto the valve tube. Grasp the tab of the venturi control lever (16). While
pulling on the venturi control lever, push the valve tube assembly out of the housing (10).
5.2.14 Remove the venturi control lever (16) from the valve tube assembly. Remove and discard the O-ring
(15) from the venturi control lever.
5.2.15 Use a 1/4” Allen wrench to turn the spring adjust plug (29) clockwise 1/4” turn. The pin (20) will fall
out of the valve tube or can now be easily removed.
5.2.16 Turn the spring adjust plug (29) counter clockwise to remove it from the valve tube. Remove and
discard the O-ring (28).
5.2.17 The balancing chamber (26), spring (25) and piston (23) are removed at this time. They will often fall
out if the valve tube is tipped on its end. If the piston will not fall out, the lever (19) can be moved through its
full arc. If the piston still does not come out a 5/32” (4-5 mm) Allen wrench can be inserted through the male
threaded end of the valve tube, through the seat (18) to gently push the piston out.
5.2.18 Remove and discard the O-ring (27) from the outside of the valve tube (21).
16
Photo 8
One side of the 347-1005 tool is used to engage the notches on the Cover Ring (1). Once the notches are
engaged by the tool, it is easy to turn the Cover Ring off of the Housing by turning the tool counter -clockwise.
See photo 8.
