2012 — 2019
15.6L OM 473 L6 - 625hp
Diesel
Observe the PowerShift 3 automated gearbox during low-speed crawling; if it feels hesitant or jerky, it is worth asking the seller about the clutch actuator health and whether the transmission software has been updated recently.
Monitor the dashboard for any persistent warnings regarding the AdBlue or SCR system, as sensors in these heavy-duty systems can occasionally become sensitive due to NZ's varying operating conditions.
Check the turbocharger boost response under load on an incline; any excessive lag or whistling sounds might suggest checking the manifold seals or turbo integrity in the future.
Inspect the cab air suspension bellows while parked on level ground; if the truck sits unevenly, it could indicate small leaks that often appear as these rigs clock up more kilometers.
Usually marks the point for a proactive inspection of the injectors and high-pressure fuel pump seals.
A common window where comprehensive drivetrain health checks are recommended, including checking the condition of the turbocharger and ancillary drive pulleys.
Often the time to evaluate the longevity of the DPF (Diesel Particulate Filter) system and internal engine components through an oil analysis.
Prioritize regular oil and filter changes using high-quality synthetic lubricants to keep that 15.6L engine running smoothly.
Keep a close eye on the cooling system, ensuring coolant additives are topped up to prevent corrosion within the radiator.
Ensure the AdBlue system is maintained with high-purity fluid to avoid potential crystallization issues in the lines.
Regularly lubricate all chassis points and pivot pins to prevent wear, especially if the truck is used in wetter or dustier NZ regions.
Schedule a professional scan of the onboard diagnostics (FleetBoard) during every service to catch minor electrical quirks before they develop.
Estimated repair costs if issues arise
Given the size of the OM 473, a clutch replacement is a significant job. Depending on the rig's towing history, you might eventually need to budget for a complete clutch and actuator service.
Exhaust after-treatment systems are vital for emissions. If the system requires a forced regeneration or part replacement, it is wise to keep a buffer in your maintenance fund.
If the turbo shows signs of wear, replacing or refurbishing it is a standard part of keeping a high-output engine like this at peak efficiency.
Noticed something inaccurate or missing?Suggest an edit→
Disclaimer: This report is generated with the assistance of AI analysis based on verified automotive data. While we strive for 100% accuracy, enthusiasts should always conduct physical inspections and consult service records. View Full Disclaimer