Dayun Truck Maintenance Elite Heavy-Duty Service for Maximum Uptime

Operating a fleet of heavy-duty trucks demands more than just fuel and drivers — it requires a disciplined, professional approach to vehicle upkeep.

Dayun Truck Maintenance delivers precisely that: a complete ecosystem of preventive care, expert diagnostics, and genuine parts support.

Whether you manage a single rig or an entire logistics armada, consistent maintenance is the backbone of profitability.

With Dayun’s structured service programs, every component — from the engine to the braking system — receives the attention it deserves.

Dayun Truck Maintenance follows a clear, mileage-based schedule that removes guesswork from fleet management.

For highway-use vehicles, the first mandatory running-in maintenance is required at 2 months or 6,000 km, whichever comes first.

Off-road Dayun trucks receive their initial service at 2 months regardless of mileage — a critical step that eliminates early-stage wear issues.

After the break-in period, regular scheduled maintenance occurs every 6 months or 120,000 km for highway models, and every 2 months or 10,000 km for off-road variants.

This disciplined approach ensures that every Dayun truck operates at peak mechanical efficiency throughout its lifecycle.

Dayun Truck Maintenance is backed by an extensive service network that spans the entire country, with over 1,000 authorized service stations.

The average service radius is kept under 60 kilometers, meaning help is never far away when your vehicle needs attention.

For major transportation corridors, Dayun has established 12 core support routes with guaranteed parts availability at key hubs.

Primary stations maintain 100% parts inventory, while secondary stations achieve 80% coverage — ensuring rapid response times.

Technicians are available around the clock, with service-level targets of 2 hours for minor repairs and 6 hours for medium-scale work.

This infrastructure transforms Dayun Truck Maintenance from a simple repair option into a true operational partner for fleet owners.

Every genuine component used in Dayun Truck Maintenance carries a unique verification code for anti-counterfeit protection.

The use of authentic parts is non-negotiable: it preserves warranty eligibility and guarantees that replacement items perform to factory specifications.

Dayun’s parts distribution centers maintain deep inventories of engine components, transmission parts, brake systems, and electrical modules.

This supply-chain strength minimizes downtime, as critical spares are typically available within hours rather than days.

The heart of any heavy truck is its powertrain, and Dayun Truck Maintenance places special emphasis on engine and transmission health.

Service includes oil and filter changes, valve adjustments, and comprehensive inspection of cooling and fuel systems.

Transmission service covers fluid replacement, clutch adjustment, and verification of shift quality — all performed to manufacturer-defined torque specifications.

For vehicles equipped with Weichai or other major engine brands, Dayun coordinates directly with the engine manufacturer’s service protocols.

A robust chassis is essential for load stability and driver safety. Dayun Truck Maintenance includes thorough inspections of the frame, suspension linkages, and axle components.

Technicians check and lubricate steering knuckle pins, tighten driveshaft support bolts, and verify universal joint conditions.

Brake systems receive special attention: clearance is set to 0.8–1.2 mm, and all air lines are tested for leaks and pressure integrity.

Tire torque is verified at 550–600 N·m, and thrust rod bolts are tightened to 500–550 N·m — preventing loose components that could lead to accidents.

In the logistics industry, every hour of downtime translates directly into lost revenue. Dayun Truck Maintenance addresses this with aggressive service-level commitments.

General faults are resolved within 12 hours, while major repairs are capped at 72 hours — with special cases handled by mutual agreement.

If a vehicle is immobilized due to parts unavailability for more than 24 hours, Dayun provides a daily compensation of 1,000 yuan to offset the operator’s losses.

This commitment is backed by dedicated personnel at every service center, ensuring that policies are executed without bureaucratic delays.

Field service teams also conduct proactive visits to new vehicle owners, offering on-site training on maintenance best practices and fuel-efficient driving techniques.

Dayun Truck Maintenance is built on the philosophy of “Dayun Care, Everywhere” — a commitment that extends far beyond the repair bay.

For large fleet operators, Dayun offers customized service agreements that include dedicated support channels and priority parts allocation.

Every vehicle receives a detailed service record in the official maintenance booklet, which serves as the sole document for warranty validation.

Customers are encouraged to keep this record up to date — incomplete maintenance logs may affect warranty coverage.

Beyond the paperwork, Dayun’s service teams are trained to listen, advise, and adapt to the unique operational needs of each client, making Dayun Truck Maintenance a truly human-centric experience.

The initial running-in service is compulsory: failing to complete it within the specified timeframe voids the vehicle’s warranty eligibility.

This service is offered free of charge for labor, transmission oil, and axle oil — engine oil costs are handled separately through the engine manufacturer.

After the running-in phase, regular scheduled maintenance must be performed at authorized Dayun stations to maintain warranty protection.

Service stations are required to complete the warranty card and mileage record after each visit, with the customer’s signature serving as confirmation.

Any modifications to the vehicle — such as frame reinforcement or tire upgrades — must be approved in advance, or they may void coverage for related components.