Operation; Cautions When Operating; Inspection During Operation; Table 3-2 Standard Values At Rated Speed - Mitsubishi S6B Operation & Maintenance Manual

Chapter 3 OPERATION

Operation

Cautions when operating

Do not approach rotating parts during operation.
Entanglement by rotating parts can cause serious
injury.
Do not touch any hot part of the engine such as
exhaust pipes during operation or immediately after
shut down. A hot engine can cause burns.
Always provide adequate ventilation in the engine
room. If air supply to the engine room is not sufficient,
the room temperature rises and can affect engine
output and performance.
For the first 50 hours, operate the engine under a
light load for break-in operation. Operating the engine
under heavy load or severe conditions during the
break-in period can shorten the service life of the
engine.
Do not turn the battery switch to OFF when the
engine is in operation. Turning off the battery switch
during operation not only stops the instrument opera-
tions but also may deteriorate the alternator diode
and regulator.
Never turn the key to the START position during
operation. The starter may be damaged.
3-14

Inspection during operation

Carefully check the exterior of engine such as piping
joints for leaks.
Check for abnormal engine noises or vibrations such
as knocking.
Check the color of exhaust gas from the exhaust muf-
fler.
Check the instruments and gauges for proper opera-
tion and make sure they indicates normal values.

Table 3-2 Standard values at rated speed

Item
Engine oil pressure
Coolant temperature
Oil Temperature
(oil pan)
Exhaust temperature
Intake air pressure
Note: (a) When the oil pressure drops below 0.29 MPa
2
{3 kgf/cm } [42.7 psi] in normal operation, or
below 0.10 MPa {1 kgf/cm
idling, stop the engine immediately. Be sure
to locate the cause of problem and correct it
before restarting the engine.
(b) When the high temperature alarm switch is
activated in normal operation, change the en-
gine operation immediately to low idling oper-
ation until the engine temperature decreases
to the normal operating level. Then, operate
the engine for another 5 or 6 minutes for cool-
ing before stopping the engine. Be sure to lo-
cate the cause of problem and correct it
before restarting the engine.
Reference value
2
0.39 MPa {4 kgf/cm }
[57 psi] or more
70 to 90°C [158 to 194°F]
110°C [230 °F] or lower
550 °C [1022 °F] or lower
0.15 to 2.5 MPa
2
{1.5 to 2.5 kgf/cm }
[21 to 36 psi]
2
} [14.2 psi] at low