Hale MG - Manual (Page 103)

Muscle Pumps
5-39
f. Remove, clean and inspect the
priming valve strainer, replace if
required.
g. Clean the pump body gasket surface.
h. Reinstall the priming valve strainer.
i. Install a new gasket.
j. Apply Loctite 242 to the two 7/16-
14UNC X 1-1/4 inch long cap screws
and install a new PVG priming valve.
k. Reinstall the 3/4 inch flexible hose
from the ESP priming pump and
reconnect the electrical connections.
l. Fill the pump and test the valve for
proper operation and leaks.
P. Accessories
1. Valves (General Procedure for maintenance
of valves).
a. Lubrication
1) On a Hale ball valve, using a
brush, lubricate the face of the
ball with waterproof grease once a
week.
2) On a suction valve, squirt some
oil in the space next to the rubber
washer to lubricate the swivel
balls. The remote control linkage
connecting the valves should be
lubr icated monthly.
3) If a drain valve is installed on a
discharge valve, insert an oil can
tip in the open end of the
discharge valve and allow some
oil to run down the connecting
pipe to the closed drain valve.
4) If the discharge valve has a built-
in drain valve, oil the passageway
that the drain valve piston slides
in then move the piston back and
fourth to lubricate the seal rings.
b. Service
1) If the valve leaks, it is probably
due to the O-ring seal not pressing
tightly enough against the seal. To
ensure the pressure of the O-ring
against the valve ball:
a) Remove the valve cover.
NOTE: The valve is usually assembled with two
or three gaskets. Do not remove to many gaskets.
The valve should turn easily yet hold a vacuum
and pressure. Never remove the last gasket.
b) Remove one valve cover
gasket.
c) Reassemble and check for
leaks.
d) If leaks persist, repeat steps A
through C.
e) If valve still leaks, remove the
cover and turn the O-ring
around and put the new side
against the ball. Reassemble
and test.
f) If this fails, install a new O-
ring.
NOTE: If the valve has high usage and wear, it
might be necessary to install a new ball, pivot or
stem.
g) If valve leaks up through
the stem, install a new
stem O - ring.
c. Disassembly and Assembly
To disassemble valve, refer to proce-
dures below. When disassembled,
clean and inspect all components for
excessive wear and damage. Replace
O-rings and gaskets. Reassemble,
install and test for proper operation
and leaks.