AME 15040 지침서 - 페이지 4
{카테고리_이름} AME 15040에 대한 지침서을 온라인으로 검색하거나 PDF를 다운로드하세요. AME 15040 5 페이지. Air hydraulic pump
페이지 인쇄8.0 TROUBLESHOOTING
Only qualifi ed hydraulic technicians should service the pump
or system components. A system failure may or may not be
the result of a pump malfunction. To determine the cause of
the problem, the complete system must be included in any
diagnostic procedure. The following information is intended to
be used only as an aid in determining if a problem exists. DO
NOT disassemble the pump.
PROBLEM
1) Pump will not start
2) Motor stalls under load
3) Pump fails to build pressure
4) Pump builds less than full pressure
5) Pump builds pressure, but load does not move
6) Cylinder drifts back on its own
7) Cylinder will not return
8) Low oil fl ow rate
* 85 psi (5,86 Bar) air pressure required to obtain 10,000 psi (700 Bar) hydraulic pressure.
A) Single-acting type
B) Double-acting type
CAUSE
Air turned off or line blocked
Low air pressure*
Inlet fi lter plugged, insuffi cient air fl ow
External leak in system
Internal leak in pump
Internal leak in system component
Low oil level
Low air pressure*
Internal relief valve set low
External system leak
Internal leak in system component
Load greater than cylinder capacity at full pressure
Flow to cylinder blocked
External system leak
Internal leak in system component
Return fl ow or coupler restricted/blocked
No load on a "load return" cylinder
Return spring broken on cylinder
Release Valve Malfunction
Return fl ow or coupler restricted/blocked
Valve malfunction
Reservoir not vented
Inadequate air supply
Dirty air fi lter
Clogged inlet fi lter
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