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Machinery repair & overhaul

Machinery repair and overhaul

Repair restores the equipment. Overhaul restores the clearances — and the difference is whether anyone measured before reassembly.

Most equipment that comes in for repair does not have a single failed component. It has a worn system, and replacing the part that finally broke returns it to service with everything else still worn. Overhaul means stripping, measuring against the manufacturer’s clearances, and replacing everything outside tolerance.

Equipment

  • Pumps and fluid equipment — centrifugal, positive displacement and submersible, including wear ring and clearance restoration
  • Valves — repair, reseating, refurbishment and pressure testing
  • Gearboxes and drives — gearing, bearings, seals and alignment
  • Hydraulic and pneumatic systems — cylinders, power packs, valves and circuits
  • Material handling equipment — conveyors, hoists and associated machinery
  • Industrial engines — non-automotive power units
  • Machine tools — metal cutting and forming equipment
  • Process furnaces and heavy machinery for industrial applications

How an overhaul runs

  • Incoming inspection, condition recording and photographic record
  • Strip-down with component identification and tagging
  • Dimensional inspection against the manufacturer’s clearance data
  • Repair, machining or replacement of components outside tolerance
  • Reassembly to specified torque, clearance and alignment values
  • Testing where facilities allow — pressure, run and performance
  • Report issued with as-found condition, work done and as-left readings

Site and workshop

Equipment that can be removed is overhauled in the workshop, where measurement and cleanliness are controlled. Equipment that cannot — large machines, equipment integral to a structure, work inside a shutdown window — is repaired in place, with the same measurement discipline applied under less favourable conditions.

Supporting capability

  • Precision machining and hydraulic system support
  • Machine rigging, hoisting and positioning
  • Dismantling and decommissioning of redundant equipment
  • Millwright services and equipment installation
  • Instrumentation and calibration support
  • Weighing equipment repair and maintenance

Standards we work to

  • ISO 9906
  • API 610
  • API 598
  • ISO 1940-1
  • ISO 10816
  • ISO 286-1

Common questions

What clients ask before awarding

What is the difference between repair and overhaul?
Repair fixes what failed. Overhaul strips the machine, measures every clearance against the manufacturer's data and replaces everything outside tolerance. Repair returns equipment to service; overhaul returns it to specification.
Do you issue a report?
Yes — as-found condition with a photographic record, the work carried out, components replaced, and as-left clearance and alignment readings. Without that the next failure has no history to diagnose against.
Workshop or on site?
Workshop wherever the equipment can be removed, because measurement and cleanliness are controlled there. In-place repair is used for large machines, equipment integral to a structure, and work that must happen inside a shutdown window.

Send us the drawings. We will tell you what it takes.

BOQ, isometrics, specifications or a full tender package. Acknowledged within one working day, with the machine schedule and programme in the offer.