6
CHAPTER TWO:
ENGINE OPERATION
2.1 POINTS FOR ATTENTION IN ENGINE OPERATION
a. Make adjustments and carry out maintenance in accordance with the maintenance methods
and rules in this book
。
b. Check bonding of earth of battery. Negative terminal of battery is connected to the earth for
model LJ276M engine
c. When operating new engines, carry out running in accordance with the specification below.
Don’t accelerate or overload suddenly
。
d. Keep water temperature within 75
～
95
℃
.At medium speeds normal oil pressure should not
be less than 245Kpa (2.5kgf/cm
2
).
e. Use RQ—70orRON—90 or above petrol as fuel .When detonation happens. adjust distributor
so that ignition timing is retarded properly .It is not allowed to run engine under detonation.
。
f. If abnormal phenomenons happen during running, turn off engine and check it without delay
g. When draining water from cooling system .to avoid being scalded. don’t open drain plug
before water temperature drops
。
2.2 RUNNING IN OF NEW ENGINE
The service life of engines depends greatly on their initial operating states. When anew
engine is installed in a vehicle,
The vehicle must be drive for 2500 km in accordance with running in specification. The
proposed running in specification is as follows:
Mileage km
Load
Speed
0
～
250
250
～
1000
1000
～
1500
1500
～
2500
No load
50% of Rated Load
75% of Rated Load
Rated Load
Engine Speed Not Over 1600r/min
Engine Speed Not Over 2200r/min
Engine Speed Not Over 2800r/min
Increase Speed Gradually To Maximum
Speed In The Operating Gears.
2.3 STARTING, RUNNING AND TURNING OFF ENGINE
2.3.1
PERPARATIONS BEFORE STARTING
Do the following before starting engine
a Check water level in radiator and reservoir tank, tightening of water pipe connections and
tensioning if fan belt
b. Check level of Lubricating oil in oil pan
。
c. Check fuel quantity in fuel tank and soundness of fuel supply line and connections. Eliminate
any leakage
。
d. Check level of electrolyte in battery
e. Check tightening of connections for battery .alternator, fuel pump, distributor, spark plug,
