Inspection During Operation - Mitsubishi S 12 R User And Maintenance Manual

Operation
Do not approach rotating parts while in opera-
tion. Entanglement by rotating parts can cause
serious injury.
Do not touch any part of the engine while it is oper-
ating or immediately after it is shut down. A hot
engine can cause burns.
Provide adequate ventilation in the engine room. If
air supplied to the engine room is restricted, the
room temperature increases and can affect engine
output and performance.
During the first 50 hours of operation, break-in the
engine by operating it with light load and at lower
speed than normal.
Operating the engine under high 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 the battery switch to
OFF while the engine is in operation not only stops
the battery charge but also causes malfunctioning
of instruments and deteriorates the diodes and
transistors in the alternator.
Never turn the key to the START position while the
engine is operating. The starter may be damaged.
After the warm-up operation, start operating the
engine with load.

Inspection during operation

Check for leakages.
Inspect the exterior of the engine to make sure
there is no leakage from joints.
Check to make sure the engine does not produce
abnormal noise or vibrations.
Inspect the engine for abnormal operating sound
and vibrations such as knocking.
Check to make sure the exhaust gas is normal
color.
Check the color of the exhaust gas discharged from
the exhaust pipe.
Note: Regarding abnormal exhaust gas conditions,
refer to "Other Problems and Countermea-
sures" (9-3).
Check to make sure the instruments and gages
indicate normal values.
Table 3-2 Data for rated speed
Item
Engine oil pressure gage
Coolant temperature
Note:(a) When the oil pressure drops below 0.29
MPa (3 kgf/cm
ation, or below 0.10 MPa (1 kgf/cm
psi] at minimum speed with no load, stop
the engine immediately. Before restarting
the engine, check and correct the cause of
the problem.
(b) When the high temperature alarm switch
is activated in normal operation, change
the engine operation immediately to no-
load idling (600 min
engine temperature decreases to normal
operating level. Then, operate the engine
for another 5 or 6 minutes for cooling
before stopping the engine.
Before restarting the engine, check and
correct the cause of the problem.
Chapter 3
OPERATION
Standard value
0.49 to 0.64 MPa
(5 to 6.5 kgf/cm 2 )
[71 to 92 psi]
70 to 90 °C
[158 to 194 °F]
2 ) [42.7 psi] in normal oper-
2
) [14.2
-1 ) condition until the
3-13