Hale Master Intake Valve - Manual (Page 29)

27
M
ASTER
I
NTAKE
V
ALVE
TROUBLESHOOTING
6
Valve is difficult to open or
close
(Electric valve must be manually
operated to first open or finally close.
Operates properly through rest of
cycle)
Valve is difficult to open or
close
(only operates a few degrees)
MIV-E valve is difficult to
operate
(tight through complete
operating range)
Refer to Table 2 for maximum
operating torque.
Valve is difficult to operate
(Sticks, Jams or Binds.
Sometimes intermittently)
Little or no grease on valve disc
(New valves may require more
lubrication until valve disc and
bore wear in)
Valve left closed for extended
periods
Inadequate clearances with
mating parts.
MIV-E gearbox tight or binding
due to improperly installed
shims, washers and needle
bearings
Little or no grease on valve
shaft
Lubricate valve: Remove
strainer from suction
connection. Manually operate
valve to open position and
coat valve bore and disc
edges with Sunoco Ultra
Prestige 2EP grease or equal.
Periodically operate valve to
ensure proper operation.
Grease if necessary
Check bores on mating parts.
The bore on the mating part on
the outlet side of the valve
must be 6-½ inches (165 mm)
to a depth of ½ inch (13 mm).
If bore is undersize, carefully
machine or grind to provide
proper clearance.
Make sure correct Hale suction
extension is installed.
P/N 178-0063-00-0 without
bottom opening.
P/N 178-0063-01-0 with bottom
opening
Remove six screws that hold
gearbox cover and position
indicator on gearbox then
remove indicator and cover.
Inspect each end of worm
gear looking for material being
extruded from shim, washer,
bearing pack or look for loose
metal in grease. If any of the
above is found order
gearbox/gearmotor assembly
(P/N 531-0150-50-0).
Check valve shaft, there are
two bearing points in the
gearbox adapter for the shaft.
Lubricate shaft and bore with
Sunoco Ultra Prestige 2EP
grease or equal.
SYMPTOM PROBABLE CAUSE REMEDY