Honeywell HON 5020 User And Maintenance Manual page 83

Cleaning
Tightening torques
Maintaining the load
limiting stage
HON 5020 gas pressure regulator with HON 630 pilot
Observe the following cleaning instructions:
 Before assembly, all parts must be cleaned in order to remove any foreign particles
(swarf) and soiling.
 If screws, bolts, or washers are replaced with identical new parts, any oil on these new
parts must first be removed.
When tightening fasteners, observe the following tightening torques:
Part
Socket cap screw
Proceed as follows:
Figure
Tightening torque
12 Nm (9 ft lbs)
Step Description
1 - 27 Same as in Maintaining the control stage
with a diaphragm assembly (see page 56)
28 Turn the load limiting stage. Unscrew the
socket cap screws and washers on the base
plate
29 Remove the base plate. Replace the O-ring
(1) with a new, greased O-ring.
30 Remove the cotter pin (1) from the cap
nut.
Maintenance
Step
35
83