Honeywell HON 5020 User And Maintenance Manual page 59

HON 5020 gas pressure regulator with HON 630 pilot
Figure Step Description
11 Take the connecting piece and unscrew the
hex nut.
12
Remove the diaphragm plate (1) and the
diaphragm (2).
Replace the diaphragm (2) and the stem
seal (3) with new ones.
When inserting the new diaphragm in
place, make sure that it is aligned correctly:
The side of the diaphragm that has a
depression at the center should be facing
upward.
13
Lightly coat the thread surfaces with
threadlocker.
Screw the hex nut back onto the connect-
ing piece. Observe the tightening torque
information provided in the table before
this section.
14
Insert the connecting piece into the valve
body. Make sure that the holes (1, 2) are
aligned.
15 Align the valve body (1) as shown.
Hold the connecting piece (2) in position.
Insert the assembly aid, with the milled
surface (3) facing upward towards the
piston opening, into the valve body.
Maintenance
59