DongFeng DFH4180 Series - Running-In of New Vehicle

Precautions
6
D760.H03E-001.H1907
Running-in of New Vehicle
The running-in mileage is 1,500-2,500 km, during which attention should be paid
to the following items:
1. In the first 250 km of running-in, loading is strictly prohibited, and the engine speed
can never exceed 2,000 r/min.
2. The load shall not exceed 50% of the rated load capacity within the running-in
period of 800km and 75% after 800 km.
3. Drive the truck on a level and hard road with minor slope throughout the running-in
period.
4. Run the engine under a proper light load or idly for a while to warm it up after
starting it.
5. It is strictly prohibited for the engine to idle for a long time, and the idle speed
should not exceed 5 minutes before the operation with load, otherwise the engine
will be damaged (except when the full-power PTO is selected to operate with
load).
6. Never drive the truck at a constant speed for a long time.
7. Properly use the transmission gears to avoid overloading the engine.
8. Often note the indication of the engine oil pressure (check low oil pressure alarm
lamp) and the coolant temperature.
9. Check the engine lubricating oil level and coolant level regularly.
10. For the truck employing flexible cowl in cooling system, check the clamp of flexible
cowl for looseness and re-tighten it if necessary.
11. Drive the truck properly, avoid abrupt braking, and properly use engine exhaust
braking.
12. Never shut down the engine abruptly after it has been running at high speed or
under heavy load for a long time. Keep the engine running idly after driving, and
shut it down after it is cooled.
13. Check whether the wheel nuts are loose within running-in, and if so, tighten the nut
to the torque of 550-650 N·m.
14. In running-in period 200-300km, re-tighten wheel bolt.
CAUTION:
1.Re-fasten the wheel nuts after running 200~300km.
2.After running-in of the new truck, please perform running-in
maintenance in the nearest technical service center (station)
authorized by Dongfeng Commercial Vehicle Co., Ltd in accordance
with the provisions in Dongfeng Commercial Vehicle Quality
Assurance Manual.