Hale Master Intake Valve - Manual (Page 23)

21
M
ASTER
I
NTAKE
V
ALVE
12. Clean and inspect all components for
damage and/or excessive wear.
Replace those components beyond
repair.
13. Install a new o-ring into the groove on
the valve disc stem. Apply a light coat
of Sunoco Ultra Prestige 2EP grease or
equal to the stem, o-ring and pivoting
surfaces of the new disc.
14. Install the new disc into the valve body
by inserting the stem end first. The disc
must be slightly rotated for the stem to
clear the bore. With the disc now
positioned in the fully open position,
push the trunnion end of the disc into
position. This will take some force to get
disc into position; however, well
lubricated pivot points greatly help.
15. Once disc is in place, roughly center
both the stem and trunnion ends in their
respective valve body bores.
16. Apply a light coat of Sunoco Ultra
Prestige 2EP grease or equal to the stem
and gearbox adapter pilot bore, as well
as, the bore for the trunnion pin.
17. Place a new o-ring on the trunnion.
Apply a light coat of Sunoco Ultra
Prestige 2EP grease or equal to the o-
ring and pin diameter. Apply Loctite
#242 or equal to the threads on the
trunnion. Insert the trunnion into the
valve body and tighten using a 1-½ inch
socket wrench. Torque the trunnion to
120 lb-ft (163 N-m).
18. Place a new o-ring into the groove on
the gearbox adapter. Apply a light coat
of Sunoco Ultra Prestige 2EP grease or
equal to the o-ring and pilot diameter,
as well as the bore in the gearbox
adapter. Install the gearbox adapter
into the valve body. Reinstall the two
7 /
16
-14 x 1 inch long counterbore screws,
but do not completely tighten.
19. If switches need to be replaced refer to
instructions on MICRO SWITCH
REPLACEMENT.
20. Install a new gasket to gearbox adapter.
21. Rotate the valve disc to its half open
position. Apply a light coat of Sunoco
Ultra Prestige 2EP grease or equal to the
valve shaft. Insert the shaft into the
gearbox adapter making sure that the
slot in the end of the shaft lines up with
the tang on the end of the valve disc
stem and that the switch sequencing
slot is midway between both sets of
switch rollers. On MIV-E type valves
install the thrust washer over the square
end of the shaft. Lightly grease the top
surface of the thrust washer.
22. Reinstall the gearbox onto the gearbox
adapter by lining up square end of shaft
with square bore in gearbox.
23. Apply Loctite #242 or equal to four 3 /
8
-16
x 2-½ inch long cap screws. Tighten cap
screws.
24. Apply a light coat of Sunoco Ultra
Prestige 2EP grease or equal to the valve
bore and the disc edges.
25. Install valve and suction tube on the fire
pump. Apply a coat of Loctite #242 or
equal to threads of cap screws and nuts
before installing. Torque cap screws and
nuts to 40 lb-ft (54 N-m).
26. Connect electrical wires.
27. Operate the valve to the closed position
28. To complete the installation the red
(closed) lamp/motor operation versus
disc position timing must be set. Refer to
MICRO SWITCH REPLACEMENT steps 23
through 34.