Shamrock Mechanical Solutions 021 060 0185
Shamrock service truck parked beside a drilling rig on a grass site
Shamrock service truck at sunset next to a drilling rig
Drill rig rotation head in the foreground with the Shamrock truck behind
Shamrock service truck beside a red drilling mast
Irish-trained · Kiwi ground

Directional
drilling specialist.

Heavy plant serviced on site

Servicing, breakdown repairs and preventive maintenance for HDD rigs and civil plant — from a fully kitted service truck, straight to your job site.

WhatsApp Diarmuid Call 021 060 0185
  • Directional Drilling
  • Vac Units
  • Trenchers
  • Excavators
Real jobSupporting the drilling crew on site
What we work on

Four machines.
One specialist.

Focused expertise across directional drilling, vacuum excavation and earthmoving plant. Every machine gets a proper diagnosis and a practical repair plan.

HDD rigHorizontal directional drilling rig
Core speciality 01 / Directional drilling

Directional
drilling rigs

Servicing, repairs and rebuilds on HDD rigs — so your crew keeps boring under roads, rivers and driveways without the rig letting them down.

  • Rotation & carriage
  • Rod loaders & vices
  • Drilling fluid pumps
  • Hydraulics & tracks
Book an HDD serviceHDD rig repairs & servicing
Vac unitVacuum excavation truck
02 / Vacuum excavation

Vac units

Vacuum excavation trucks and trailers kept sealed, safe and pulling hard.

BlowersVacuum pumpsDebris tanksWater systems
Vac unit repairs & servicing
TrencherTracked chain trencher
03 / Ground engagement

Trenchers

Chain trenchers set up to cut clean, straight and on depth.

Digging chainsTeeth & sprocketsDrivesUndercarriage
Trencher repairs & servicing
ExcavatorTracked excavator
04 / Earthmoving

Excavators

Excavators serviced and repaired right where they work.

HydraulicsPins & bushesAttachmentsServicing
Excavator repairs & servicing
Other heavy plant?

Shredders, loaders, telehandlers and other civil plant too — if it runs on diesel and hydraulics, Diarmuid can take a look.

Ask about your machine
Recent work

On site.
On the tools.

Real jobs from across the North Island — drilling sites, civil builds and roadworks. No stock photos — just the work.

Need us on your site? Send the location and we'll tell you when we can get there. Ask about availability
How we help

From fault
to fix.

Practical mechanical support across the working life of your equipment — from scheduled maintenance to the unexpected callout.

Request a service

  • Servicing & overhauls

    Routine work and full overhauls to manufacturer spec, backed by clear service records.

  • Hydraulic systems

    Pumps, valves, cylinders and hoses. Pressure testing, leak repair and replacement.

  • Diesel engines

    Filters, cooling and fuel systems on rigs, vac trucks and support plant.

  • Preventive maintenance

    Inspection schedules built around your machine hours, so small issues never become breakdowns.

  • Breakdowns & field repairs

    Machine down? Send details and photos and get direct, practical help on site. Report a breakdown

  • Diagnostics & fault finding

    Electrical, hydraulic and mechanical diagnosis to find the real cause — not just the symptom.

Shamrock service truck with tools laid out beside excavators on a civil siteReal job · civil site
How a callout works

Ready to work
where you work.

Heavy equipment doesn't always make it back to a workshop. Shamrock brings the tools, the parts and the know-how to your site.

  1. 01Send a WhatsAppMachine, location and a photo or video of the fault.
  2. 02We diagnoseA first read on the problem and a straight quote.
  3. 03Repair on siteThe truck carries tools and common parts to fix it there.
  4. 04Back to workTested, signed off, and delivered with a service note for your records.
Start on WhatsApp
Shamrock Mechanical Solutions service truck at sunset
Diarmuid CooneyFounder · Mechanic
Meet the mechanic

Irish roots.
Kiwi ground.

Shamrock Mechanical Solutions was founded by Diarmuid Cooney, an Irish heavy machinery mechanic now based in New Zealand.

It's a hands-on business with a simple advantage: when you get in touch, you speak to the person working on your machine. Our main focus is to get you up and running with a concrete fix for the most cost-effective option possible. No layers, no hidden costs — just clear communication and work done properly.

Trained in IrelandOld-school standards
Based in NZServing the North Island
No middlemanHonest, cost-effective fixes
“The right fix starts with understanding the machine.”— Diarmuid Cooney
Start a conversation

Machine down?
Let's get to work.

Tell Diarmuid what machine it is, where it is and what happened. Photos of the fault help a lot.

Phone021 060 0185
HoursMon–Fri 7am–5pmAfter-hours call-outs available
Emaildcooney@shamrockmechanicalsolutions.com
Service areaAll of the North Island, NZ
Fleet or civil contractor?

Ask about planned servicing for multiple machines or a field-support arrangement for your crews. Email a company enquiry →

Request a service or quote

Fill this in and it opens WhatsApp with your message ready to send.

We'll reply as soon as we're off the tools.

Chat now