Alemite 8702-A Servicehandleiding - Pagina 11
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High-Pressure Hydraulic Pump
Pump Indications
Pump does not cycle
Pump will not prime
Pump cycles rapidly
Pump cycles continuously, or
slowly (once or twice/hour)
External Leaks
Product leakage visible at top
of Adapter (5)
Product leakage at the
sections of the pump tube
[This requires the removal of
Follower Tube (35)]
Internal Leaks
Pump does not prime or
cycles continuously, or slowly
(once or twice/hour)
Alemite LLC
Troubleshooting Chart
Possible Problems
1. Hydraulic motor not operating properly
2. Pump tube jammed and/or contains loose
components
3. Insufficient hydraulic pressure
1. Excessive cycling speed
2. Pump leaking internally
Product source empty
1. Pump leaking internally
2. Pump leaking externally
3. Distribution system leaking
1. Initial tightening of Adapter (5) to
Hydraulic Motor Assembly (3) not
sufficient
2. Damaged O-Ring (4)
1. Initial tightening of Tube (18) to Adapter
(5) not sufficient
2. Initial tightening of Tube (18) to
Retainer (20) not sufficient
3. Initial tightening of Extension (24) to
Retainer (20) not sufficient
4. Initial tightening of Extension (24) to
Primer Body (36) not sufficient
5. Gasket(s) (6) worn or improperly
crushed
6. Gasket (23) worn or improperly crushed
1. Foreign material between Ball (15) and
seat in Piston (17)
2. Foreign material between Valve
Body (27) and Valve Seat (28)
3. Worn or damaged Ball (15)
4. Worn or damaged Piston (17)
5. Worn or damaged Spring (14)
7. Worn or damaged Valve Body (27)
8. Worn or damaged Valve Seat (28)
9. Worn or damaged Seal (21)
10. Worn or damaged Seal (26)
11. Worn or damaged Rod (29)
Changes Since Last Printing
Initial Release
11
Solution
1. Inspect hydraulic motor and rebuild
or replace as necessary
2. Rebuild pump tube
3. Increase hydraulic pressure
1. Reduce hydraulic pressure
2. See Internal Leaks
Replenish product
1. See Internal Leaks
2. See External Leaks
3. Correct leak
1. Tighten Adapter (5) into Hydraulic
Motor Assembly (19)
2. Replace O-Ring (4)
1. Tighten Tube (18) into Adapter (5)
2. Tighten Tube (18) into Retainer (20)
3. Tighten Extension (24) into
Retainer (20)
4. Tighten Extension (24) into Primer
Body (36)
5. Replace Gasket(s) (6)
6. Replace Gasket (23)
1. Locate and eliminate source of
foreign material.
2. Disassemble pump tube, clean,
inspect, and replace worn or
damaged components.
Revision (1-10)
SER 8702