SER 8700 High-Pressure Hydraulic Pump
Revision (2-13) 9 Alemite LLC
Troubleshooting Chart
Pump Indications Possible Problems Solution
Pump does not cycle 1. Hydraulic motor not operating properly
2. Pump tube jammed and/or contains loose
components
3. Insufficient hydraulic pressure
1. Inspect hydraulic motor and rebuild
or replace as necessary
2. Rebuild pump tube
3. Increase hydraulic pressure
Pump will not prime 1. Excessive cycling speed
2. Pump leaking internally
1. Reduce hydraulic pressure
2. See Internal Leaks
Pump cycles rapidly Product source empty Replenish product
Pump cycles continuously, or
slowly (once or twice/hour)
1. Pump leaking internally
2. Pump leaking externally
3. Distribution system leaking
1. See Internal Leaks
2. See External Leaks
3. Correct leak
External Leaks
Product leakage visible at top
of Adapter (3)
1. Initial tightening of Adapter (3) to
Hydraulic Motor Assembly (1) not
sufficient
2. Damaged O-Ring (2)
1. Tighten Adapter (3) into Hydraulic
Motor Assembly (1)
2. Replace O-Ring (2)
Product leakage visible at top
of Follower Tube (31)
1. Initial tightening of Tube (16) to Adapter
(3) or Tube (16) to Retainer (18) or
Extension (22) to Retainer (18) or
Extension (22) to Primer Body (33) not
sufficient
2. Gasket(s) (4) worn or improperly
crushed
3. Gasket (21) worn or improperly crushed
1. Tighten all components
2. Replace Gasket(s) (4)
3. Replace Gasket (21)
Product leakage visible at
bottom of Follower Tube (31)
Damaged O-Ring (32) Replace O-Ring (32)
Internal Leaks
Pump does not prime or
cycles continuously, or slowly
(once or twice/hour)
1. Foreign material between Ball (13) and
sea
t
in Piston (15)
2. Foreign material between Valve
Body (25) and Valve Seat (26)
3. Worn or damaged Ball (13)
4. Worn or damaged Piston (15)
5. Worn or damaged Spring (12)
7. Worn or damaged Valve Body (25)
8. Worn or damaged Valve Seat (26)
9. Worn or damaged Seal (19)
10. Worn or damaged Seal (24)
11. Worn or damaged Primer Rod (27)
1. Locate and eliminate source of
foreign material.
2. Disassemble pump tube, clean,
inspect, and replace worn or
damaged components.
Changes Since Last Printing
Corrected part number
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