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Repair
Repair
Repair
Pressure
Pressure
Pressure Relief
Relief Procedure
Relief
Procedure
Procedure
Follow the Pressure Relief Procedure
whenever you see this symbol.
This equipment stays pressurized until pressure is
manually relieved. To help prevent serious injury
from pressurized fluid, such as splashing fluid,
follow the Pressure Relief Procedure when you
stop dispensing and before cleaning, checking, or
servicing the equipment.
1. Close the master air valve (A) to shut off the air
to the pump.
2. Open outbound fluid valve to relieve fluid
pressure from the pump.
a. For
For simple
For
simple transfer
simple
transfer applications,
transfer
the fluid shutoff valve (J) or the fluid drain
valve (K).
b. For
For
For circulating
circulating applications,
circulating
fluid shutoff valve (J) is closed and open the
fluid drain valve (K).
Air Valve
Valve Repair
Repair
Air
Air
Valve
Repair
Tools Required:
Tools
Tools
Required:
Required:
• Torque wrench
• Torx (T20) screwdriver or 7 mm (9/32 in.) socket
wrench
• Needle-nose pliers
• O-ring pick
• Lithium base grease
Air valve repair kit 819.0664 is available. Use all
parts in the kit for best results.
Disassemble Air
Air Valve
Valve
Disassemble
Disassemble
Air
Valve
812.0065
applications, open either
applications,
applications, ensure that the
applications,
1. Follow the
Pressure Relief Procedure, page 9
2. With a Torx (T20) screwdriver or 7 mm (9/32 in.)
socket wrench, remove the six screws (107), air
valve cover (109), and gasket (118).
3. Move the valve carriage (105) to the center
position and pull it out of the cavity. Using a
needle-nose pliers, pull the pilot block (116)
straight up and out of the cavity.
4. Pull the two actuator pistons (114). Remove the
u-cups (106) from the pistons. Pull the pilot pins
(112). Remove the o-rings (108) from the pilot
pins.
Repair
.
9
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