Medium-Pressure Stub Pump
SER 8568-A4
Alemite, LLC
7
Revision (7-05)
IMPORTANT: Do not mix Springs. Make sure to use
the light-duty spring from the kit. The heavy-duty
spring will not operate in pump model 8568.
3. Install Spring (11) into the Piston Adapter.
• Make sure the Spring centers on the Ball.
Figure 5
Pump Tube 321314 - Section View
4. Screw Coupling Rod (8) into the Piston
Adapter until the pin holes are in alignment.
5. Press on the Ball to ensure it operates and seats
properly.
• Use a small screwdriver or other suitable
tool.
CAUTION
Support the Rod Coupling and the Piston
Adapter during Roll Pin installation. Dam-
age to components can occur.
6. Install Roll Pin (10) to secure the Coupling
Rod to the Piston Adapter.
• Use a small hammer.
7. Install Wear Rings (13), O-Ring (15) and
Back-Up Washer (16) onto the Piston.
8. Install O-Ring (6) onto Valve Seat (21).
9. Install O-Ring (4) and O-Ring (6) onto the
Tube Adapter.
• Make sure to place the larger O-Ring on the
upper portion of the Adapter (with holes).
10. Install Bung Adapter (18) onto Tube and Guide
assembly (17).
• Tighten the Bung Adapter bolt.
11. Install Spring (19) and Valve Disk (20) into the
bottom of the Tube and Guide assembly.
• Make sure the components are stacked and
centered properly.
12. Screw the Valve Seat into the Tube and Guide
assembly. Use care when passing over the
O-Ring.
• Use the Bung Adapter as a lever and tighten
securely.
13. Turn the Tube and Guide assembly end for
end.
CAUTION
Use care not to damage the piston rings
during the installation process.
14. With a slight twisting motion, install the piston
assembly into the Tube and Guide assembly.
• Ease the lubricated assembly past the tube
threads.
Refer to Figure 2 Parts List
for Parts Identification
