Honeywell HON 5020 User And Maintenance Manual page 66

HON 5020 gas pressure regulator with HON 630 pilot
Figure Step Description
9 Remove the screws and the corresponding
washers from the lower section of the
spring housing.
10 Pull the valve body, including the metal
bellows, upwards in order to remove it as a
complete unit from the spring housing.
11 Unscrew the cap (1) while using an
open-end wrench to hold the diaphragm
plate (2) in place so as to prevent the
components from turning.
12 Replace the O-ring with a new, greased
O-ring.
13 Remove the pistons from the connecting
piece.
Maintenance
66