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Repair
Repair
Repair
Repair
Pressure Relief
Relief Procedure
Procedure
Pressure
Pressure
Relief
Procedure
Follow the Pressure Relief Procedure
whenever you see this symbol.
This equipment stays pressurized until pressure
is relieved manually. To help prevent serious
injury from pressurized fluid, such as splashing
in the eyes or on skin, follow the Pressure Relief
Procedure when you stop pumping and before you
clean, check, or service the equipment.
1. Remove power to the system.
2. Open the fluid drain valve to relieve fluid
pressure. Have a container ready to catch the
drainage.
3. Shut off the master air valve.
4. Turn down center section regulator to zero to
relieve air pressure in center section.
Check
Check
Check Valve
Valve Repair
Valve
Repair
Repair
NOTE:
NOTE:
NOTE: Kits are available for new check valve balls
and seats in a range of materials. O-ring and fastener
kits also are available.
NOTE: To ensure proper seating of the check balls,
NOTE:
NOTE:
always replace the seats when replacing the balls.
Also, replace the o-rings every time the manifold is
removed.
10
Disassemble the
Disassemble
Disassemble
the Check
the
Check Valve
Check
1. Follow the
Pressure Relief Procedure, page
Remove power to the motor. Disconnect all
hoses.
2. NOTE
NOTE
NOTE for
for plastic
for
plastic pumps:
plastic
pumps: Use hand tools until
pumps:
thread-locking adhesive patch releases.
3. Remove the manifold fasteners (29) and nuts
(33; used only on stainless steel and plastic
models), and washers (28; used only on stainless
steel and plastic models), then remove the outlet
manifold (24).
4. Remove the seats (26), balls (27), and o-rings
(25) if present.
NOTE:
NOTE:
NOTE: Some models do not use o-rings (25).
5. Repeat for the inlet manifold (23), o-rings (25) if
present, seats (26), and balls (27).
To continue disassembly, see
Disassemble the Standard Diaphragms, page
Reassemble
Reassemble the
Reassemble
the Check
the
Check Valve
Check
1. Clean all parts and inspect for wear or damage.
Replace parts as needed.
2. Reassemble in the reverse order, following all
notes in the illustration. Put the inlet manifold on
first. Be sure the ball checks and manifolds are
assembled exactly
exactly
exactly as shown. The arrows (A) on
the fluid covers (2) must
manifold (24).
Valve
Valve
12.
Valve
Valve
must point toward the outlet
must
859.0635
10.
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