Honeywell HON 512, User And Maintenance Manual

Page: 90 / 208

Maintenance
HON 512 with HON 650 pilot user manual 90
Figure Step Description
22 Put the tension ring (2) back in place and
tighten the screws (1) in a criss-cross
sequence.
23 Take the outlet body. Unscrew the screws
(2) on the valve disc (1). Remove the valve
disc. Use the assembly screw specified in
the list of special tools for this purpose.
24 Replace the valve disc (2) and the O-ring
(1) with new ones. Screw the valve disc
back in the outlet body.
25 Remove the two support rings (1). Replace
the O-ring (2) with a new, greased O-ring
and insert the support ring back in place.
26 Check the guide ring (3) for damage.
Replace it if necessary. Fill the chamber
with grease for valve sleeves (as per the
lubricant table) via the guide ring.
27 Set the inlet body back on the outlet body.
Take the assembly’s high center of gravity
into account. Secure the assembly’s
position if necessary. Tighten the screws
(1) in a criss-cross sequence. Refer to the
additional procedure and tightening
torque information at the beginning of this
topic.