HMS Machinery / Offer

Construction Machinery Service

We provide specialized repair services for the construction and road-building sector. We service a full range of machines: crawler and wheeled excavators, mini-excavators, telehandlers, bulldozers, graders, and articulated dump trucks. We perform major repairs in our stationary workshop, restoring worn-out components to full working order.

Power Hydraulics Regeneration

The hydraulic system is the most critical system in a construction machine. Our power hydraulics service includes:

Hydraulic Pumps

Regeneration of piston and gear pumps (replacement of rotor, pistons, valve plate), pressure setting on a test bench.

Cylinders

Replacement of gland and piston seals, rod polishing or replacement, cylinder honing.

Control Valves

Cleaning, section replacement, relief valve calibration (LS – Load Sensing).


Line Boring and Hole Regeneration

Play in excavator arm joints cannot be eliminated by greasing alone. We offer professional line boring and welding of holes in booms, buckets, and frames, restoring nominal dimensions.

  • Eliminating pin play
  • Mobile welding/cladding
  • Operator precision

Drivetrain Repair

We service power transmission systems working under heavy loads:

Axles and Final Drives

Drive axle, final drive, and wheel hub overhauls.

Transmissions

Automatic PowerShift, hydrostatic.

Undercarriage

Chains, track rollers, idlers.

Diagnostics and Mobile Service

In the event of a breakdown immobilizing the machine on the construction site, our mobile service is the first line of support.

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