Diesel engine 12V 4000 G73, 16V 4000 G73. Manual - part 7

3.3 Engine – Main dimensions

Engine – Main dimensions

Length

(A)

12V
16V

approx. 2550 mm
approx. 3020 mm

Width (B) 12V

16V

approx. 1590 mm
approx. 1590 mm

Height (C) 12V

16V

approx. 1870 mm
approx. 1870 mm

4 Operation

4.1 Putting the engine into operation after extended out-of-

service periods (>3 months)

Preconditions

☑ Engine is stopped and starting disabled.
☑ MTU Fluids and Lubricants Specifications (A001061/..) are available.

Putting into operation after long out-of-service periods (>3 months)

Item

Action

Engine

Depreserve (→ MTU Fluids and Lubricants Specifications A001061/..).

Valve drive

Lubricate valve drive every ≥ 6 months (→ Page 72).

Lube oil system

Check engine oil level (→ Page 102).
Bar engine with starting equipment (→ Page 64).

Fuel prefilter

Fill with fuel (if fitted).

Coolant circuit

If engine is out of service for more than one year, change engine coolant

(→ Page 117).
Change charge-air coolant (→ Page 127).

Coolant circuit

Check engine coolant level (→ Page 116);
Check charge-air coolant level (→ Page 126).

Coolant circuit

Preheat coolant with coolant preheating unit (if applicable).

Engine governor

Check plug connections (→ Page 143).

HP fuel pump

Only for engines without oil priming pump
Fill HP fuel pump with new engine oil (→ Page 77).

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4.2 Putting the engine into operation after scheduled out-of-

service-period

Preconditions

☑ Engine is stopped and starting disabled.

Putting into operation

Item

Action

Lube oil system

Check engine oil level (→ Page 102).

Coolant circuit

Check engine coolant level (→ Page 116), check charge-air coolant level

(→ Page 126).

Coolant circuit

Preheat engine coolant with coolant preheating unit, if fitted.

Fuel prefilter (if fitted)

Drain water and contaminants, see manufacturer's documentation.

Engine control system

Switch on.

4.3 Start engine in manual mode (testing mode)

Preconditions

☑ Generator (if provided) not connected to network.
☑ External start interlock is not activated.

DANGER

Unguarded rotating and moving engine components.

Risk of serious injury – danger to life!

• Before barring or starting the engine, make sure that nobody is in the danger zone.

WARNING

Engine noise above 85 dB (A).

Risk of damage to hearing!

• Wear ear protectors.

Preparation

Item

Task

Operating mode selector

switch (if provided)

Change to manual mode.

Preheating pump (if provid‐

ed)

Switch ON.

Starting the engine

Item

Task

Switchgear cabinet, control

panel etc. (depending on

manufacturer)

If coolant temperature is

• > 40 °C (with preheating equipment), or

• > 5 °C (without preheating equipment):
Press start button.

• Automatic starting sequence is performed;

• Engine speed display instrument indicates increasing crankshaft speed;

• After the starting sequence is completed, engine is running at rated

speed.

Connect generator to network (if provided), run engine to reach operating

temperature )

Item

Task

Switchgear cabinet, control

panel etc. (depending on

manufacturer)

Close the generator circuit breaker.

Engine

Apply full load only after engine has reached operating temperature (cool‐

ant temperature approx. 75 °C).

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