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Troubleshooting (continued)
Pump indications
Internal leaks
Product leakage past piston wear
rings (13) and/or o-ring (15)
Product leakage past ball (12)
Product leakage past valve disk (20)
Possible problems
Worn or damaged wear rings (13) and/or o-ring (15)
Worn or damaged piston (14)
Contamination
Foreign material between ball (12) and piston (14)
Damaged ball (12)
Damaged piston (14)
Foreign material between valve disk (20) and
valve seat (21)
Damaged valve disk (20)
Damaged valve seat (21)
Damaged spring (19)
Solution
Disassemble pump, clean and inspect wear rings (13)
and/or o-rings (15) Replace as necessary
Inspect piston (14) Replace necessary parts
Locate and eliminate source of foreign material
Disassemble pump, clean and inspect seat areas
Check mating surfaces and replace parts as necessary
Locate and eliminate source of foreign material
Disassemble pump, clean and inspect seat areas
Check mating surfaces and replace parts as necessary
Locate and eliminate source of foreign material
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