Class 2 truck servicing that keeps you working
Class 2 truck servicing at Turbo & Diesel covers medium rigid trucks, 6,001 to 18,000 kg GVM, from our Frankton, Hamilton workshop.
4.7 from 50 Google reviews 20+ years 10,000+ vehicles serviced
Why class 2 truck servicing is done differently here
Real photos from the floor on Kahikatea Drive. Same team, same hoists, same standards on every job, from a quick check through to a full strip-down.
What you get when you book this service
12 checks performed on every visit
- Scheduled servicing to manufacturer intervals, engine oil and OEM-spec oil, fuel and air filters, sump plug washer renewed
- Certificate of Fitness pre-check against the NZTA inspection sheet, faults flagged and repaired before the truck goes to the testing station
- Common rail diesel injection diagnostics and bench testing, Bosch and Delphi systems on Hino, Isuzu, Fuso and UD engines
- Turbocharger inspection, shaft play check, actuator calibration and boost-pressure testing on Garrett units
- DPF differential pressure checks, forced regeneration and EGR diagnostics on medium-truck diesels
- Air and hydraulic brake service, load-rated linings and discs or drums, air-system performance testing and slack adjuster checks
- Suspension and chassis inspection, leaf packs, airbags, U-bolts, shackles, bushes and steering components against GVM-rated specs
- Driveline inspection, clutch, gearbox, propshaft, universal joints and differential service for medium rigids
- Cooling system flushes, hose, water pump and thermostat work, charge-air cooler inspection
- Auto-electrical fault diagnosis, charging, starting, lighting and trailer wiring
- Tyre wear assessment for medium-truck axle loadings, rotation and pressure setting
- Pre-purchase inspection on used Class 2 trucks, engine, driveline, brakes, chassis and diesel system condition
Want class 2 truck servicing done right?
Same-day response. Phone the workshop or send a quick form, whichever suits you.
4.7 from 50 Google reviews 20+ years 10,000+ vehicles serviced
Why Hamilton trusts us with class 2 truck servicing
Class 2 medium rigid focus
We service the 6 to 18 tonne medium truck band, Hino, Isuzu, Fuso and UD, the rigids most general car workshops and heavy line-haul dealers both skip.
Authorised diesel agents
Bosch, Delphi and Garrett authorisation means factory training and manufacturer-spec test gear for the systems on your truck diesel.
COF preparation done properly
We work the NZTA inspection sheet before your truck goes to the testing station, so it passes first time and you avoid a re-inspection.
Fuel injection test room on site
Calibrated injector test bench and a dedicated fuel injection test room let us bench test truck injectors and pumps, not just clear fault codes.
Fleet servicing windows
Held maintenance slots so your medium trucks cycle through predictably, with a written report per vehicle and upcoming work flagged.
Twenty years in Frankton
MTA-aligned, 10,000-plus vehicles serviced, same Kahikatea Drive workshop and same team trusted by Waikato transport operators.
Simple, transparent process
- 01
Intake and job card
We log the truck, its odometer or hub hours, COF expiry and the brief. A job card is opened so nothing is missed at handover or invoicing.
- 02
Scan and inspect
Manufacturer scan tools pull fault codes and live data from the engine and driveline. Brakes, air system, suspension, chassis and tyres are inspected against COF and load-rated specs.
- 03
Service and quote
Scheduled work is completed. Anything beyond it, a worn slack adjuster or drifting turbo actuator, is quoted and agreed before we touch it.
- 04
Bench test where needed
Suspect injectors, pumps or turbos come off and onto calibrated equipment in the fuel injection test room. The data decides whether a unit goes to our specialist partners for rebuild or is replaced with a remanufactured one.
- 05
Verify and hand back
The truck is road tested against manufacturer specs and returned with a written summary of work done and items flagged for the next COF or service.
Trained to the standards behind your vehicle
Everything you should know about class 2 truck servicing
A workshop perspective on what's involved, how we run the job, and what shapes the final cost.
Why Class 2 truck servicing in Hamilton needs a diesel specialist
A Class 2 medium rigid is a working asset, not a car with a bigger badge. A 10 tonne curtainsider running freight between Hamilton and Cambridge loads its brakes, driveline and suspension in ways a private SUV never will, and it answers to a six-monthly Certificate of Fitness rather than an annual Warrant.
The trucking-specific dealers in Hamilton are mostly geared for Class 4 line-haul rigs, while general car workshops are not set up for medium-truck air brakes, GVM-rated suspension or truck diesel injection. That leaves the operator of a Hino, Isuzu, Fuso or UD medium rigid between the two. Turbo & Diesel sits exactly in that gap: an independent diesel specialist that knows the 6 to 18 tonne band, its COF requirements, and the engines that power it.
What our Class 2 truck servicing covers
A scheduled service on a medium rigid starts with the fundamentals done to manufacturer spec: engine oil and OEM-spec filters, the fuel filter being critical on common rail truck diesels, and a full multi-point inspection. From there the work follows the truck and its duty cycle.
On the diesel side we use manufacturer-level scan tools to pull live data from the engine and driveline, checking rail pressure against expected values, watching DPF differential pressure under load, and verifying EGR behaviour. Where injectors or the high-pressure pump are suspect, they come off and go onto the calibrated bench in our fuel injection test room for flow, return and back-leak testing. Failed components are sent to our specialist partners for rebuild where that is economical, or replaced with Bosch or Delphi remanufactured units. Garrett turbochargers are inspected for shaft play and oil return condition, and variable-geometry actuators are calibrated to manufacturer spec rather than simply having the fault cleared.
Brakes on a Class 2 truck are a bigger job than on a ute. We service:
- Air and hydraulic brake systems, fitting load-rated linings, discs or drums
- Air-system performance testing, slack adjuster and chamber checks
- Suspension and chassis: leaf packs, airbags, U-bolts, shackles, bushes and steering against GVM-rated wear limits
- Driveline: clutch, gearbox, propshaft, universal joints and differential
Throughout, every item that touches the Certificate of Fitness inspection sheet is checked and flagged so the truck passes cleanly.
How a truck servicing job works at our Frankton workshop
On arrival we open a job card with the truck's history, odometer or hub hours, COF expiry and the brief. The scheduled service runs through on the hoist: oil, filters, fluids, brake measurement, air-system check and the multi-point inspection. Live data is logged on a road test so we see the engine as it actually behaves under load.
Anything outside the scheduled scope, a worn slack adjuster, a leaking water pump, a drifting turbo actuator, is quoted and agreed before we touch it. When injectors, pumps or turbos have to come off, they go to the fuel injection test room for bench testing on calibrated equipment. The data decides whether a unit is rebuilt by our specialist partners or replaced. After refit the truck is road tested against manufacturer specs and handed back with a written summary of the work done and items flagged for the next COF or service.
What affects the cost
Truck servicing has more cost variables than a passenger car, so we quote each job specifically:
- Work required - a scheduled service is very different from injector access on a tight engine bay or a full air-brake overhaul
- Parts availability - genuine, aftermarket and remanufactured routes carry different prices and lead times; a well-stocked Hino or Isuzu platform costs less to keep moving than a less common variant
- Severity - one worn brake chamber versus a full axle set; a contaminated-fuel recovery that has reached the high-pressure pump escalates quickly
- Diagnostic time - clear fault codes with strong live data are quick; intermittent faults across multiple systems take longer
We quote scheduled servicing up front and price anything beyond it before the work happens. For a quote on your truck, call (07) 847 3339 or use the contact form.
Hamilton and Waikato truck coverage
Our workshop and fuel injection test room sit on Kahikatea Drive in Frankton, easy to reach from the Hamilton ring road for trucks coming off Te Rapa, Hillcrest and the industrial corridors.
Medium-truck customers come from across the Waikato: transport operators and contractors running Hino and Isuzu rigids out of Cambridge and Te Awamutu, delivery and service trucks working Morrinsville and Huntly, and owner-operators from Ngaruawahia and out toward Raglan who need COF prep and diesel work without a trip to a city dealer. The workshop is open Monday to Friday, 7:30 AM to 4:30 PM.
Last reviewed and updated
Common Questions
Everything you might want to know before booking.
What is a Class 2 truck in New Zealand?
A Class 2 truck is a medium rigid vehicle with a gross vehicle mass between 6,001 and 18,000 kg. It sits above light commercials, which are Class 1 and run a WOF, and below heavy rigids, which are Class 4. Most delivery trucks, tip trucks, curtainsiders and service bodies in the Hino 300 and 500, Isuzu N and F-series, Fuso Canter and Fighter, and UD ranges fall into Class 2.
How often should a Class 2 truck be serviced?
Manufacturer intervals for medium rigids are usually every 10,000 to 20,000 km or every six months, whichever comes first, with shorter intervals for hard urban or off-road duty. Many operators line servicing up with the six-monthly Certificate of Fitness. We set an interval that matches how the truck is actually used rather than just the book figure.
What is the difference between a COF and a WOF?
A Warrant of Fitness covers light vehicles, including utes and vans up to 6,000 kg GVM, and is usually inspected yearly. A Certificate of Fitness covers heavier vehicles, including all Class 2 medium rigid trucks, and is inspected every six months. A Class 2 truck needs a COF, not a WOF. We carry out COF pre-check and repair work so your truck passes its inspection cleanly.
Do you do COF inspections or just COF preparation?
We do COF preparation and repair work. We work through the NZTA Certificate of Fitness inspection sheet, brakes and air system, steering, suspension, tyres, lights, body and chassis, emissions and seatbelt anchorages, fix anything that will not pass, then your truck goes to the testing station for the certificate. Doing the prep here means you avoid paying for a re-inspection.
What size and type of trucks do you service?
We service Class 2 medium rigid trucks, 6,001 to 18,000 kg GVM, Hino 300 and 500, Isuzu N and F-series, Fuso Canter and Fighter, UD, and Ford. We cover scheduled servicing, COF prep, diesel injection, turbo, DPF, brakes, suspension and driveline. We do not service Class 4 articulated line-haul rigs or do full heavy engine rebuilds.
Can you work on DPF and emissions faults on truck diesels?
Yes. Medium trucks doing stop-start urban delivery work often cannot get the diesel particulate filter hot enough to regenerate passively, which leads to differential pressure faults, limp mode and EGR carbon build-up. We diagnose with live data, run forced regenerations where appropriate, clean the DPF, and address the EGR and injection causes behind it rather than just clearing the light.
Do you service diesel injection and turbochargers on trucks?
Yes, this is core to what we do. We are authorised agents for Bosch and Delphi, so we have the training, calibrated benches and service data to flow test common rail injectors and high-pressure pumps used on truck diesels in our fuel injection test room. Units that need rebuilding go to our specialist partners, or we fit remanufactured replacements. Turbochargers are inspected for shaft play and oil return, and Garrett actuators are calibrated to manufacturer spec.
Do you offer fleet servicing for medium trucks?
Yes. We work with Hamilton and Waikato transport operators on scheduled servicing plans scaled to truck count, type and run hours. We hold service windows so your trucks cycle through with minimal disruption, and supply a written report per vehicle with upcoming work flagged. Phone us with your truck list and we will put an arrangement together.
Can you align servicing with my COF and RUC?
Yes. Most operators prefer to book servicing alongside the six-monthly Certificate of Fitness so the truck only comes off the road once. We track COF expiry on the job card and can flag it ahead of time. We do not buy or manage road user charges for you, but we can advise on hub readings so your RUC stays in step with the truck's distance.
How quickly can you fit a truck in for an urgent repair?
For fleet customers we hold service windows and prioritise breakdown work. For one-off urgent jobs, phone first thing and we will fit you in where we can. A truck diesel in limp mode from an injection, boost or emissions fault is usually triaged within 24 hours so you know what is wrong and what the fix involves.
What affects the cost of truck servicing?
The main drivers are the work required for the specific truck, parts availability across genuine, aftermarket and remanufactured options, the severity of any fault found, and whether diagnostic time is needed because the truck came in with a complaint rather than a scheduled service. Heavier brake and air-system work and harder injector access also lift the labour share. We quote before any work beyond the scheduled service.
Are you MTA-aligned and WINZ-approved?
Yes. We work to MTA-aligned standards, which matters for operators who need accountability on workmanship, and we are WINZ-approved for repair quotes. If a major truck repair is creating financial pressure we can provide a formal written quote you can submit to Work and Income.
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4.7 from 50 Google reviews 20+ years 10,000+ vehicles serviced