buy Excavator Parts ZX330-5A Hydraulic Main Pump YB60001317 Pump Device

Break-In Procedure: Run at 50% load for the first 20 hours to seat seals and bearings. Fluid Requirements: Use ISO VG 46 hydraulic oil with ≤50 ppm water content. Change oil every 2,000 hours or as per Hitachi’s maintenance schedule. Torque Specs: Mounting bolts: 220–240 N·m (162–177 ft-lb). Drive shaft coupling: 350–380 N·m (258–280 ft-lb).