High-Pressure Grease Pump SER 7786-A5
Alemite, LLC 9 Revision (1-13)
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. Inspect all parts for wear and/or damage.
• Replace as necessary.
3. Inspect Piston (36) and Primer Rod (43) closely. Use a
magnifying glass to detect any score marks.
• Replace as necessary.
4. Closely inspect the mating surfaces of all check valve
components for any imperfections Ensure a smooth
and clean contact is obtained when assembled.
Assembly
NOTE: Prior to assembly, certain compo-
nents require lubrication in clean oil. Refer
to Table 4 for details.
Pump Tube Upper Packing
NOTE: Refer to Figure 4 for a section view
of the upper packing components.
1. Install O-Ring (10) and O-Ring (11) onto Body (12).
2. Position the Body with the large diameter upward.
3. Install O-Ring (14) into the Body.
4. Install Spacer (15) into the Body.
• Make sure the Spacer centers and seats properly.
5. Install Seal (16) [lip end first] into Lantern Ring (17).
6. Install the Lantern Ring assembly into the Body.
• Make sure the assembly centers and seats properly.
7. Install and seat Seal (18) [heel end first] into the Body.
23. Remove both aluminum Gaskets (29).
24. Remove brass Bearing (34), Back-Up Ring (33), and
Seal (32) from the Barrel Assembly.
NOTE: Inspect the inside diameter of nylon
Wear Ring (31). Remove the Wear Ring if
rough or worn.
25. Remove Spacer (35) from top of Adapter (44).
26. Unscrew Primer Body (51) from the Adapter.
27. Remove the Primer Rod (with attached components)
from the bottom of the Adapter.
28. Remove Stop Nut (50) from Primer Rod (43).
• Support the Primer Rod through the hole as needed.
29. Remove Plate (49), Gasket (29), Valve Seat (48), and
additional Gasket (29) from the Primer Rod assembly.
CAUTION
Support the Piston and Primer Rod assembly dur-
ing Roll Pin (42) removal. Damage to components
can occur.
30. Remove Roll Pin (42) that secures Adapter and Insert
Assembly (41) to Primer Rod (43).
• Use a punch and a small hammer.
31. Unscrew Primer Rod from Adapter and Insert
Assembly.
32. Remove Valve Body (47) [with Seal] and Guide
Washer (45) from the upper end of the Primer Rod
assembly.
33. Remove Seal (46) from the Valve Body.
34. Unscrew the Adapter (41) from
Piston (36).
35. Remove aluminum Gasket (40), Ball (39), Spring (38),
and Retainer (37) from the Piston.
Item No.
on Figure 2-A Description Item No.
on Figure 2-B Description
10 O-Ring, 1-13/16 " ID x 2 " OD 31 Ring, Wear (Glass-Reinforced Nylon)
11 O-Ring, 1-15/16 " ID x 2-1/8 " OD 32 Seal, 0.925 " ID x 1.300 " OD
14 O-Ring, 1-3/16 " ID x 1-5/16 " OD 46 Seal, 0.650 " ID x 0.990 " OD
16 Seal, 13/16 " ID x 1-1/16 " OD
18 Seal, 13/16 " ID x 1-9/16 " OD
Table 4 Components Lubricated in Clean Oil
