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P3000 Series
Users Manual
Handpump Assembly
Disassembly
Cleaning and Inspection
Re-Assembly
5-10
1.800.561.8187
When handling the top plate assembly, it is good practice to
remove the piston assemblies to avoid accidental damage.
Replacement is simply the reverse of the above procedure.
1. Disconnect tubing from check valve (19) and/or (23).
2. On the upper side of the top plate, unscrew locknut (3) 1/2 turn, and remove spring
clip (1) from clevis (2).
3. The pump arm assembly can be swung out of the way.
4. Remove locknut (3) and clevis (2).
5. Loosen set screws (4) approximately 1 turn, and unscrew pump lock (5).
6. Withdraw pump assembly from below the top plate.
7. Disassemble outlet check valve assembly by unscrewing valve body (19). Take care
not to lose the small internal components that may spring out.
8. The inlet check-valve (23) is not user-serviceable and should be checked for signs of
contamination, and replaced if necessary.
9. Remove guide (6) from cylinder (13) — take care not to damage this, as it is a tight
fit within the cylinder.
10. Remove piston assembly from the cylinder.
11. The piston head assembly (12) can be separated from the piston shaft (10) by
removing the snap ring (9).
The piston head assembly cannot be further disassembled without damage to the
components, so it must be wiped clean with a soft cloth to remove any contamination.
Check all seals for signs of wear and/or damage.
Check the cylinder bore for signs of excessive wear, scratches/scoring, etc.
Replacement seals are available; however, if there is significant damage to the internal
components, the pump is available as a replacement assembly.
Reassembly is the reverse of the above disassembly instructions.
Care should be taken whenever a seal comes in contact with
metal components, to avoid damage to the seal from sharp
edges, etc.
Examples:
•
When introducing the piston head assembly (12) into the cylinder (13).
•
When introducing the piston shaft (10) through the guide (6).
•
When introducing the guide (6) into the cylinder (13).
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