A: Clear signs include severe hydraulic drifting on multiple cylinders simultaneously, erratic or slow movement when trying to perform compound functions, and severe pressure drops across the entire block that cause the engine to lug heavily.
A: Technicians must completely drain and flush the hydraulic reservoir, clean all main lines, and replace the return and pilot filters. Failing to purge existing metallic particles from a prior pump failure will instantly score the new spool surfaces.
A: Cross-reference your factory parts manual with part number 723-46-23103. Providing our technical support team with the number of hydraulic lines and the electrical connector style on the travel solenoid block guarantees an exact match before shipping.
A: This assembly utilizes reinforced internal relief valves and heavy-duty casting walls designed to absorb and dampen the harsh high-pressure return spikes caused by continuous hammer operations, protecting internal spools from jamming.






















