oem Genuine New EX1200-6 ZX870-3 ZX850-3 Hydraulic Pump ZX670-3 ZX650-3 Main Pump YA00053235

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: 280–320 N·m (207–236 ft-lb).

Drive shaft coupling: 450–500 N·m (332–369 ft-lb) .