Maintenance & Adjustment
D760.H03E-001.H1907
161
Maintenance & Adjustment
To prolong the service life of vehicle, guarantee the safety and pleasure of driv-
ing, always perform careful and periodic maintenance on the vehicle. This manual
describes some common maintenance and adjustment methods. As for more detailed
information about inspection and adjustment as well as the parts replacement, please
contact the nearest Technical Service Centre (Station) of Dongfeng Commercial Vehi-
cle Company of Dongfeng Motor Co., Ltd.
Please refer to the attached Operation and Maintenance Manual of Cummins
Engine for the maintenance schedule.
Please refer to the specific configurations of your vehicle.
Inspection and Adding of Coolant
1. To check the coolant level, turn the ignition
key to ON position and check whether the
low water level warning lamp comes on. If
the lamp comes on and the buzzer sends
out warning signal, please add coolant.
Alternatively, observe the coolant level from
the auxiliary water tank behind the cab. If the
level is below the "MIN" mark indicated on
the tank, please add coolant.
2. Open the cab front face shield.
3. Tilt the cab front face shield and add the
coolant from the filler of auxiliary water tank
behind the cab until the level reaches the
filler lower edge. Never add the coolant too fast through unscrewing the filler cap
(the filler cap, pressure valve and vacuum valve are integrated); otherwise, it will
be difficult to drain out the air in the engine water jacket.
4. After coolant top-up, warm up the engine to check the level again. If the tank is not
full, top up it again.
5. Check the sealing and working conditions of the filler cap and the pressure valve
cap.
CAUTION:
1.Before adding coolant, check the engine and the radiator for leakage, and repair
it if any.
2.Tighten the filler cap of auxiliary water tank after filling. Otherwise, cavitation is
liable to ºCcur on the engine cylinder liner.
3.Normally, do not remove the pressure valve cap. Remove the pressure valve
only after the coolant temperature is below 50ºC; otherwise, the spraying of
high temperature coolant or steam may cause personal injury. Remove the
pressure valve cap slowly to release the cooling system pressure.
4.It is recommended to use dedicated long-life anti-rust and anti-freeze coolant.
Never use the running water or hard water from well or river.
1. Filler cap and pressure valve cap