A: If the R220-9S displays sluggish boom movement or a sudden drop in breakout force accompanied by a metallic whining noise, it often indicates internal wear of the valve plate or cylinder block. Monitoring case drain flow can also help identify internal leakage before a total pump failure occurs.
A: The entire hydraulic circuit must be flushed to remove metal debris from previous failures. You must prime the 31Q6-10050 by filling the pump case with filtered oil through the top drain port to ensure lubrication during the critical initial startup phase.
A: Verify the part number 31Q6-10050 against your machine's manual and check that your current motor is a K3V112 series. We recommend confirming the regulator type and the number of splines on the input shaft to ensure complete compatibility with your construction machinery.
A: Designed for global mining operations, the 31Q6-10050 uses high-thermal-stability seals that prevent hardening in temperatures up to 90 degrees Celsius. The heavy-duty housing is treated to resist corrosion and maintain structural integrity in both high-humidity and sub-zero environments.
Q: What quality options are available?
A: We provide original, OEM, and high-quality aftermarket versions with stable supply capability.
Q:Why Choose RITO?
A:Listed Factory
Stable&Reliable Quality
OEM Factory for Chinese Top Excavator Brands
Supplier to Fortune 500 Companies





















