Honeywell HON 512 User And Maintenance Manual page 81

HON 512 with HON 650 pilot user manual
Figure Step Description
7 Remove the relief housing with the help of
the insertion aids. For this purpose, insert
the special top piece (as per the list of
special tools) into the stud (1) holes.
8 Turn the relief housing. Unscrew the screw
(1) on the valve disc (2) and remove the
valve disc.
9 Check the valve disc for damage and
replace it with a new one if necessary.
Replace the O-ring (1) with a new, greased
O-ring. Screw the valve disc back onto the
relief housing.
10 Insert the relief housing back into the
outlet body. Tighten the socket cap screws
(1), including retaining rings (2), in a
criss-cross sequence. Refer to the addi-
tional tightening torque information at the
beginning of this topic.
11 Screw the studs (1) back into the relief
housing.
Maintenance
81