Strip down and rebuild rotation head / rotary drive

Service or replace feed motors and gearboxes

Inspect and repair pulldown / feed system

Replace wear plates, bushes, and pins

Service drill string handling systems

Change out filters (fuel, oil, air)

Inspect mast/boom for cracks or fatigue

Weld repairs on frames, guards, and mounts

Check tramming frame and articulation points

Inspect handrails, walkways, and guarding

Full service on diesel engine

Replace belts, filters, and fluids

Inspect radiators and cooling systems

Check turbochargers and exhaust systems

Complete maintenance logs

OEM inspection checklists (e.g., 250hr / 500hr / major shutdown)

Identify future defects

Update service history

Replace hydraulic hoses and fittings

Inspect and change hydraulic cylinders (feed, mast lift, jacks)

Service hydraulic pumps and motors

Flush hydraulic systems and change oil

Check pressures and recalibrate systems

Fix leaks

Inspect and replace track chains, rollers, and sprockets

Service / change final drives

Check /change tramming motors and gearboxes

Change/ Align and tension tracks

Test emergency stops

Inspect fire suppression systems

Check isolation systems (lockout/tagout points)

Ensure guarding is compliant

Engine swap

Hydraulic pump replacements

Rotation head changeout

Mast rebuild or replacement

Inspect / change wiring looms and connectors

Test and replace sensors and limit switches

Diagnose faults in control systems / PLCs

Maintain battery systems and alternators

Check lighting and safety circuits

Service / change air compressors

Inspect and replace air lines and valves

Drain moisture from system

Check operating pressures

Degrease and pressure wash rig

Clean engine bay and hydraulic areas

Remove dust buildup (important in mining environments)