SER 7889-6
High-Pressure Material Pump
Revision (3-03)
8
Alemite Corporation
Body Seal (Packing)
13. Remove the Packing Screw from the Body.
IMPORTANT: Should the pump contain flat
packings in the Body (see
Figure 5
), the
pump must be converted to use Seal (
14
).
Replace existing Screw with Packing Screw
(
11
) [order separately].
14. Remove Upper Bearing (
13
), Seal (
14
), and Lower
Bearing (
15
) from the Body.
15. Remove Screws (
9
) and Lock Washers (
10
) that secure
the Upper Mounting to the Body as required.
• Separate the Upper Mounting from the Body.
Pump Tube
16. Move and secure the Bung Adapter to Adapter (
39
).
• Secure the pump assembly once again horizontally
in the vise.
17. Unscrew Primer Body (
48
or
49
) from Adapter (
39
).
18. Remove Stop Nut (
47
) from Primer Rod (
38
).
• Support the Primer Rod through the hole as needed.
19. Remove Plate (
46
) from the Primer Rod assembly.
20. Grip Upper Piston Rod (
19
) and pull the entire rod
assembly from the Pump Tube.
21. Remove Gasket (
25
), Valve Seat (
45
), and additional
Gasket (
25
) from the Adapter.
22. Remove Valve Body (
44
) [with attached components]
and Guide Washer (
40
) from the Adapter.
23. Remove Screw (
41
), nylon Washer (
42
), Seal (
43
) and
additional Washer (
42
) from the Valve Body.
24. Unscrew Pump Tube (
24
) from the Adapter.
• Use a strap wrench.
25. Remove Spacer (
30
) from Barrel Assembly (
26
).
IMPORTANT: Should the pump contain flat
packings in the obsolete Barrel Assembly
(see
Figure 5
), the pump must be converted
to use Seal (
28
), Bearing (
29
), and Spacer
(
30
). Order Barrel Assembly (
26
) separately.
26. Remove the Barrel Assembly from the Pump Tube.
27. Remove both aluminum Gaskets (
25
).
28. Remove brass Bearing (
29
), Seal (
28
), and nylon Wear
Ring (
27
) from the Barrel Assembly.
Rod Assembly
29. Remove upper and lower Spring Clips (
18
) that secure
Lower Piston Rod (
20
) and Piston (
31
) to Coupling
(
17
).
30. Unscrew the Lower Piston Rod and the Piston from the
Coupling.
CAUTION
Support the Piston and Primer Rod assembly dur-
ing Roll Pin (37) removal. Damage to components
can occur.
31. Remove Roll Pin (
37
) that secures Adapter and Insert
Assembly (
36
) to Primer Rod (
38
).
• Use a punch and a small hammer.
32. Unscrew the Primer Rod and the Piston from the
Adapter and Insert Assembly.
33. Remove aluminum Washer (
35
), Ball (
34
), Spring
(
33
), and Retainer (
32
) from the Piston.
34. Separate Upper Piston Rod (
19
) from the Lower Piston
Rod as required.
Clean and Inspect
NOTE
: Use the appropriate repair kit for
replacement parts. Make sure all the compo-
nents are included in the kit before discard-
ing used parts.
1. Clean all metal parts in a modified petroleum-based
solvent. The solvent should be environmentally safe.
2. Make sure to remove the thread sealant from both male
and female threaded connections.
3. Inspect all parts for wear and/or damage.
• Replace as necessary.
4. Inspect Upper Piston Rod (
19
), Piston (
31
), and Primer
Rod (
38
) closely. Use a magnifying glass to detect any
score marks.
• Replace as necessary.
5. Closely inspect the mating surfaces of all check valve
components for any imperfections Ensure a smooth
and clean contact is obtained when assembled.
