Honeywell HON 5020 User And Maintenance Manual page 73

Maintaining the
control stage
HON 5020 gas pressure regulator with HON 630 pilot
Proceed as follows:
Figure Step Description
1 Release the tension on the pilot spring by
loosening the hex flange nut (1) and
unscrewing the spring adjuster (2) a few
turns.
2 Unscrew the diaphragm cover's screws (1).
3 Unscrew the screw-in fitting.
4 Remove the diaphragm cover.
5 Remove the spring (1) from the hex nut.
Maintenance
73