© 2017 Honeywell International Inc
Operation and maintenance manual HON HSV086
24
5.4
Valve and body HON HSV
(see figures 7a, 8)
The following parts should be replaced in this component during maintenance:
2x O-ring retainer set 21 (no seal, must be replaced during assembly, however)
O-ring rod 22
O-ring guide 23
O-ring cover 26
O-ring valve 30
O-ring valve seat 32
O-ring
40
Work as follows to replace these parts:
The valve should be closed.
Disconnect impulse line (pos. 21 in fig. 6).
Unscrew screw connection 47 and dismount the complete SVC086.
Unscrew screw connection 27.
Lift cover 09 from body 16 by load frame 37 provided for this purpose (not shown
in figure 7a). For easier removal of cover 09 from body 16 you may use lock
screws 55 (after loosening plug 56 (only for 12” ).
When you have used lock screws 55, you should tighten them again and fit plug 56
(only for 12”).
Valve 12 is now underneath cover 09.
Place cover 09 with valve 12 on a surface which guarantees that valve 12 with
cover 09 lies horizontally.
Remove retainer set 02 from connection rod 04.
Replace O-ring of retainer set 21.
Slowly lift cover 09 with guide from valve rod above 08 by the load frame 37
provided for this purpose (not shown in figure 7a) and lift over connection rod 04.
Place cover 09 on the same surface as the valve.
Remove flat-headed screws 24.
Remove rod guide top 06 from cover 09 and replace O-rings 22 and 23.
Fit rod guide top 06 in cover 09 and tighten flat-headed screw 24.
Remove compression spring 29.
Re-fit retainer set 02 on connection rod 04.
Re-mount connection rod 04 with retainer set 02 and suspension screws 03 to
valve rod top 14 (fix suspension screw 03 with LOCTITE 243).
Unscrew screw connection 31 and disconnect securing plate 13.
Replace O-ring 30.
Fit screw connection 31 (use new screws) and securing plate 13.
Re-fit compression spring on valve.
Slowly and carefully lower cover 09 with guide of valve rod top 08 over connection
rod 04. Work very carefully to prevent damage.