Honeywell HON 512 User And Maintenance Manual page 128

HON 512 with HON 650 pilot user manual
Figure Step Description
13 Remove the pistons from the connecting
piece.
14 Remove the diaphragm plate (1) and the
diaphragm (2).
15 Screw the assembly aid into the valve
insert.
16 Pull out the valve insert.
17 Replace the valve insert with a new one.
Insert a new, greased O-ring (1).
Maintenance
128