SER 9940
High-Pressure Pump (Stripped and Portable)
Revision (2-03)
14
Alemite Corporation
Troubleshooting Chart
Pump Indications
Possible Problems
Solution
Pump does not cycle
1. Air motor not operating properly
2. Pump tube jammed and/or contains
loose components
3. Insufficient air pressure
1. Inspect air motor and rebuild or replace as
necessary. Refer to SER
339413
2. Rebuild pump tube
3. Increase air pressure
Pump will not prime
1. Excessive cycling speed
2. Pump leaking internally
3. Primer Disc (
56
) missing
1. Reduce air pressure
2. See
Internal Leaks
3. Install Primer Disc (
56
)
Pump cycles rapidly
Product source empty
Replenish product
Pump will not stall (cycles
more than once or twice per
hour)
1. Pump requires break-in period
2. Pump leaking internally
3. Pump leaking externally
4. Distribution system leaking
1. Operate the pump against moderate fluid
pressure for up to one hour
2. See
Internal Leaks
3. See
External Leaks
4. Correct leak
External Leaks
Product leakage visible at
bottom of Body (
30
)
1. Tube (
45
) not sufficiently tight
2. Damaged Gasket (
31
)
1. Tighten Tube (
45
) into Body (
30
)
2. Separate Tube (
45
) from Body (
30
) and
replace Gasket (
31
)
Product leakage visible at
weep hole Body (
30
)
1. Worn or damaged Seal (
35
)
2. Worn or damaged Upper Rod (
37
)
1. Replace Seal (
35
)
2. Replace Upper Rod (
37
)
Product leakage visible at
weep hole in Lower Tube
(
50
)
1. Primer Body (
57
) not sufficiently
tight
2. Damaged Gasket(s) (
46
)
1. Tighten Primer Body (
57
) into Tube (
45
)
2. Separate Primer Body (
57
) from Tube (
45
)
and replace Gasket(s) (
46
)
Product leakage visible at
weep hole in Tube (
45
)
1. Lower Tube (
50
) not sufficiently
tight
2. Damaged Gasket (
46
)
1. Tighten Lower Tube (
50
) into Tube (
45
)
2. Separate Lower Tube (
50
) from Tube (
45
)
and replace Gasket (
46
)
Internal Leaks
Pump does not prime or
cycles continuously, or
slowly (once or twice/hour)
1. Foreign material between Foot Valve
(
53
) and Seat (
54
)
2. Foreign material between Ball (
42
)
and seat in Piston (
43
)
3. Worn or damaged Foot Valve (
53
)
4. Worn or damaged Seat (
54
)
5. Worn or damaged Ball (
42
)
6. Worn or damaged Piston (
43
)
7. Worn or damaged Seal (
48
)
8. Worn or damaged Seal (
52
)
9. Worn or damaged Primer Rod (
49
)
10. Primer Disc (
55
) missing
Locate and eliminate source of foreign
material.
Disassemble pump tube, clean, inspect, and
replace worn or damaged components.
Product leakage visible at Air
Motor Assembly (
22
) exhaust
1. Worn or damaged Seals (
33
and
35
)
2. Worn or damaged Upper Rod (
37
)
Separate Tube (
45
) from Body (
30
) and
replace worn or damaged component(s).
Changes Since Last Printing
Changed Bench Test Air Pressure Setting
