13-11
Chapter 13 ADJUSTMENT AND OPERATION
3. Engine-Test and Adjustment
After the break-in operation is completed, and the engine runs normally, check and adjust the performance and functions of the
engine.
Record the test results referring to the engine data of delivery time.
3.1 Engine Performance Test
Fuel consumption rate, various temperatures and pressures, and exhaust color
3.2 Emission Gas Test
Exhaust gas analyses
3.3 Governor Performance Test
Minimum speed at no-load (low idle) - set
Maximum speed at no-load (high idle) - set
Load sudden application and rejection tests
Governor droop, hunting, and rotational fluctuation - check
Setting conditions of governor controller and others - check
3.4 Alarm Action and Emergency Stop Tests
Oil pressure decrease, water temperature increase, and overspeed
3.5 Maximum Fuel Injection Volume - Set
(1) Remove the rack set cap at the front end of fuel injec-
tion pump, and apply the rated (maximum) load.
(2) Secure the double nuts when the nuts at the rack end
comes into contact with the spring case end face.
Maximum Fuel Injection Volume - Set
(a) Engine test, adjustment and seal shall be performed at the certified maintenance shop only.
When the seal of engine is to be done at a service shop other than the certified shops, ask a certified shop for
the presence of qualified person for the test, adjustment and seal.
(b) Performance check and adjustment of the engine shall be conducted when the water and oil temperatures
become stable after sufficient warm-up operation.
Fuel injection
volume increase
Fuel injection pump rack zero position
Spring case
Fuel injection
volume increase
Rack position at maximum load
Rack position at maximum load
Rack position at maximum load
Spring case
33 ± 3.3 N·m
{3.37 ± 0.34 kgf·m}
[24.3 ± 2.43 lbf·ft]
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