ZX70 or ZX75 hydraulic system responding sluggishly or pump making a whining noise under load? A worn 4437197 main pump loses the high volumetric efficiency required for the compact ZX70/ZX75 LS system to maintain stable actuator speed. RITO supplies this Korean-standard heavy-duty pump assembly, restoring the fast-response flow your ZX70 or ZX75 system demands.
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