Mitsubishi S6R2 Series User Manual

13-9
Chapter 13 ADJUSTMENT AND OPERATION
2. Break-in Operation
2.1 Preparation Before Engine Starting
Check the levels of fuel, engine oil, and coolant, and also bleed air from fuel system and cooling system.
Inspect the link between governor output lever and the fuel injection pump rack. Check that the fuel control rack is at the no-
injection position when the engine is stopped. Check that the control rack is at the "0" position when the stop lever is pulled.
Check the wiring of electrical system (sensor, meter alarm panel, starter, alternator, stop solenoid, and battery). Turn ON the
controller main switch to check for abnormality.
Set the governor speed lever so that the engine may run at a low idling speed after start-up.
Operate the stop solenoid, and make sure that the fuel injection pump rack moves to the no injection position.
Install the pressure gauge, thermometer and flow meter as required.
2.2 Engine Start-up
(1) Pull the stop lever to the no injection position, and crank for approx 10 seconds with starter to circulate engine oil in the
engine. Repeat this 2 or 3 times with one minute intervals between them.
Check that there is no defect such as abnormal noise or rotation speed fluctuation.
(2) Start the engine in the normal procedure.
Check that the engine can run at a low idling speed after start-up.
(3) Check that the oil pressure increases immediately, and the coolant circulates.
(4) Check for leakage of oil, coolant, fuel and gas (air), and abnormal noise and vibration.
(5) After checking the engine low idling without any problem, turn the key switch to OFF position, and make sure that the
engine stops.
2.3 Break-in Operation
2.3.1 Break-in Operation Load and Time
The load during break-in operation is to be increased progressively as shown in the table.
Note that the time shown in the table is the minimum time required to check the engine in a stable condition.
Be prepared to activate the emergency stop for unexpected trouble of engine operation.
Break-in Operation
Rotating speed (min
-1
)
Loading
factor
Time
(min)
1 Low rotating speed 600 to 900 No-load 20
2 Medium rotating speed 1000 to 1200 No-load 10
3 High rotating speed 1400 to rated speed No-load 10
4
Marine partial load
rotation speed
Equivalent to 25 % output 25 % 20
5 Equivalent to 50 % output 50 % 20
6 Equivalent to 75 % output 75 % 30
7 Rated speed 100 % 20

Mitsubishi S6R2 Series Specifications

General

Brand	Mitsubishi
Model	S6R2 Series
Category	Engine
Language	English