2013 — 2026
7.7L (OM 936) - 238hp to 354hp
Diesel
Listen carefully to the gear shifts under load. In trucks of this type, it is worth monitoring for any hesitation or clunking in the PowerShift 3 automated manual transmission, as early electronic calibration issues can sometimes arise as the unit ages.
Operate all air-suspension controls while parked. Pay attention to how quickly the truck levels itself, as air leaks in the leveling valves or bellows are items that typically warrant a check on older commercial vehicles.
Monitor the dashboard for any persistent engine management or exhaust after-treatment warning lights. Given the complexity of Euro 6 emissions systems, it is common to verify the health of the AdBlue system during a cold start.
Engage the auxiliary braking system (engine brake or retarder) on a slight gradient. Observe if the retardation feels consistent; inconsistency might suggest it is time to have the actuator solenoids or brake management system inspected.
Usually marks the point for a comprehensive inspection of the turbocharger efficiency and a deeper look into the EGR cooler functionality.
Often the time to assess the condition of the main prop-shaft carrier bearings and ensure the transmission oil cooler is performing optimally.
Typically the phase where major chassis pivot points and potential suspension bushing wear should be thoroughly evaluated to maintain roadworthiness.
Ensure the oil change intervals are strictly adhered to, using high-quality synthetic lubricants to keep the OM 936 engine running smoothly.
Keep a close eye on the AdBlue injectors; keeping these clean prevents crystallization which can be a common nuisance in heavy-duty diesel engines.
Regularly inspect all air lines and connectors for hairline cracks or chafing to prevent pressure loss.
Maintain a log of the transmission oil health; fresh fluid keeps the automated clutch actuators performing precisely.
Check the coolant condition periodically, as the cooling system is vital for managing the heat generated by the 7.7L engine under high loads.
Estimated repair costs if issues arise
These components work hard in Euro 6 engines. Depending on the operational history of the truck, you might eventually need to budget for a professional cleaning or replacement of the EGR valve if you notice a decrease in fuel efficiency.
If this component needs attention in the future, it usually manifests as slow or jerky gear engagement. It is a critical electronic part that occasionally requires replacement as part of high-mileage upkeep.
Should you encounter warnings regarding the emissions system, it is often related to the dosing pump. It is wise to set aside some funds for this, as it is essential for meeting environmental standards.
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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