Complete workshop overhaul, cylinder barrel honing, valve port plate lapping, swashplate regulator servo adjustment, and bearing renewal for heavy dual tandem axial piston excavator hydraulic pump.
Fully assembled dual tandem variable-displacement axial piston hydraulic pump with top regulator valve bodies, rear pilot pump, and engine bell housing mounting flange.
Overhead perspective of the dual tandem pump showing hydraulic displacement regulator blocks, auxiliary pilot pump, and SAE mounting flange.
Workshop bench assembly stage with new Japanese precision bearings, high-pressure dynamic shaft seals, circlip tools, and internal swashplate parts.
Direct end view into the disassembled cylinder block showing the central splined drive shaft, 9 axial piston bores, and precision bronze valve plate mating face.
Inspection of the hydraulic port valve plate inside the casing, highlighting the crescent suction/discharge ports, locating dowel pin, and internal needle roller bearing.
Technician inspecting and calibrating the swashplate displacement regulator valve block, servo adjustment screw, and feedback linkage pin.
Full teardown, ultrasonic cleaning, and precision reconditioning of a heavy-duty dual tandem variable-displacement axial piston hydraulic main pump. Work included non-destructive testing of the swashplate assembly, micro-lapping of the valve port plate and cylinder barrel faces to optical flatness, replacement of internal needle and tapered roller bearings with certified Japanese bearings, renewal of high-pressure Viton dynamic shaft seals, calibration of maximum/minimum flow displacement regulator screws, and post-assembly pressure testing delivering zero-leakage volumetric efficiency.
Adheres strictly to ISO 9001:2015 quality control checklists, micrometric runout verification, and calibrated torque specifications.
Executed under ISO 45001:2018 occupational safety protocols, certified rigging, PPE compliance, and zero-accident target execution.
Comprehensive commissioning documentation including FAT/SAT reports, dynamic vibration logs, and warranty certificate.
Consult our engineering team for precision fabrication, on-site heavy erection, hydraulic rebuilds, or industrial generator support.
