How do hydraulic pumps fail?
How do hydraulic pumps fail?
The major cause of hydraulic pump failure is called fluid contamination. Hydraulic pumps and valves are only designed to carry hydraulic fluid, and anything else in them will damage the system, especially since this foreign debris may remain in the system and continue to damage the valves and pipes.
What happens when you replace a hydraulic pump?
Sometimes, if a pump has been replaced and is larger than the original (produces more flow), the relief may not be able to allow all the flow being produced to escape back to tank. When that happens, the relief valve is “saturated” and the effect is the same as having no relief in the system.
Why do I need to clean my hydraulic pump hoses?
Sometimes, contaminates are accidentally introduced when repair work takes place on a hydraulic system: New hoses can contain leftover bits of rubber and metal particles from the cutting and crimping process and should be cleaned out before installation.
Can a greasable PTO shaft replace a hydraulic pump?
Using a greasable PTO shaft and being sure to include adding grease as part of the regular maintenance program. Using larger pump and PTO shafts will not eliminate fretting, but may resolve the problem because of the increased metal available before the failure occurs. Cavitation – the pump has been starved of oil.
How can I tell if my hydraulic pump is receiving enough oil?
You can check if the pump is receiving oil adequately by using a vacuum gauge at the pump inlet. For a standard gear pump, at maximum operating RPM, the gauge should read a maximum of 5 inches HG.
Where can I find a hydraulic pump catalog?
502-25049-03 505-05014-00 502-25048-03 502-05007-01 Walking Floor Pump (gear pump) (CCW) Four Bolt Flange Kit Direct Mount Dump Pump (CW rotation) 502-25112-03 Walking Floor Pump (gear pump) (CW) 1″NPT 90 Degree to 1″ SAE “O” Ring PART NO. ITEM
Sometimes, if a pump has been replaced and is larger than the original (produces more flow), the relief may not be able to allow all the flow being produced to escape back to tank. When that happens, the relief valve is “saturated” and the effect is the same as having no relief in the system.
When is the best time to replace a hydraulic hose?
Once the hose assembly is replaced and the system is fully reassembled, test the system to ensure there are no leaks or performance issues. Keep records as to what the inspection of the hoses is showing regarding hose durability and determine what replacement intervals may be needed to assure hoses are replaced before failure.
How are hydraulic hoses used in hydraulic systems?
In hydraulic systems, hoses carry pressurized hydraulic fluid to or from pumps, motors, valves, actuators and other system components. Due to their critical function, the hoses employed are designed and constructed for suitable flexibility and durability.
