WEICHAI WD10 Service Manual - page 18
Service Manual for WD10 Diesel Engine
8
(5) Parameters and check points that should always be noticed during normal use:
Engine oil pressure (main gallery)
350~500kPa.
Engine oil temperature in oil sump
o
C.
Coolant outlet temperature
80+5
o
C, should not exceed 93
o
C
Turbine-rear exhaust temperature
≤550
o
C;
Intake air temperature after intercooler
50~55
o
C.
Check the exhaust gas color to determine working quality of injector and load condition, if the
color is seriously bad, stop the engine for inspection.
ATTENTION: When the engine is in operation, check it for water leakage, air leakage
and oil leakage, and stop the engine immediately for troubleshooting.
(6) Following diesel engine features should be fully aware by operator:
1) The engine consumes less fuel when output torque is large, and fuel consumption rises as
engine speed increases.
2) Output torque reaches the best value at intermediate speed range (1200~1600r/min).
3) Engine output power increases as rotating speed gets faster, and reaches rated power at
rated speed.
(7) Notes for running the engine in cold environment:
1) Fuel oil: Choose different brands of diesel fuel based on ambient temperature.
2) Engine oil: Choose engine oil of different viscosity according to season.
3) Coolant: Antifreeze additive is required for cooling system, choose different brands and
different proportion based on ambient temperature.
4) Starting: Use starting aid to start the engine in winter. Load and speed up the engine only
after oil pressure and water temperature get normal.
5) Storage battery: Be sure to check electrolyte level, viscosity and unit voltage before winter
comes. If the engine needs to be stored in cold weather for long term, be sure to take down
the battery and put it in warm environment.
6) Stop: For shutting down the engine in cold weather, you should firstly unload it and run it
idly for 1~2min, stop the engine after all temperature drops down. Notice that coolant with
antifreeze additive mustn’t be drained out after stop. For coolant without antifreeze
additive, it must be drained out to prevent frost cracking the engine, open the water drain
valve or cap on engine block, engine oil cooler, radiator and water inlet pipe to drain the
coolant out.