![background image](http://html1.mh-extra.com/html/yuchai/yc4d60-d21/yc4d60-d21_maintenance-manual_3664228027.webp)
27
Stopping the diesel engine
1
.
Keeps the engine idling for 3 to 5 minutes before stopping it, especially when the
engine runs with heavy load and at high speed. Do not stop the engine sharply unless
there is an emergency.
2
.
When the ambient temperature is below 5
℃
and the coolant is not anti-freezing,
discharge all of the coolant water after stopping the engine to avoid engine damage
by frost crack
3
.
Generally, discharge all of the coolant water when the engine will be parked for a long
time.
4
.
Shoot troubles that occurred when engine was running after engine stops. Always
check the engine and make sure that the engine runs in proper technical state.
5
.
Maintenance must be available as required after diesel engine stops
Storage
1. Diesel engine should be stored in warehouse, which is dry, with ventilation, and
without corrosive matter.
2
.
If diesel engine will be stored for a long time, discharge all of the coolant. Diesel
engine must be well cleaned with necessary oil sealing in case of rusting.
Charter Diesel engine maintenance
Break-in of the diesel engine
It is very important for new engine or an engine just after overhaul to have a 50-hour
break-in. This break-in period can improve performance of friction pair and is essential to
ensure the operating dependability and lifespan of diesel engine.
If conditions permit,
run the engine at the speed of 1500r/min and under 25%, 50% and 75% full load, each
load an hour.
Special attentions during break-in period:
(1)
Do not accelerate abruptly when the diesel engine just starts.
(2)
Before running engine, keep the engines idling with no load and at low to medium
speed for at least 5 minutes.