Run the engine slightly above idle until oil pressure
shows on the gauge. If oil pressure doesn’t show on
the gauge within 30 seconds of starting, turn the key
to the off position and wait one minute; then repeat
the starting procedure.
Mercedes-Benz
CAUTION
Never attempt to start any Mercedes-Benz elec-
tronic engine using ether or any other starting
fluid. Serious engine damage could result.
The intake air preheater is activated by turning the
ignition switch to the on position (
Fig. 7.6
). If the en-
gine is at normal temperature, the INTAKE HEATER
indicator goes out after two seconds.
If the temperature is low enough to require the
heater, the INTAKE HEATER indicator stays on while
the intake air preheater warms up. After the indicator
goes out, start the engine. If the engine doesn’t start
after about 30 seconds of cranking, turn the key to
the off position and wait two minutes; then repeat the
starting procedure.
NOTE: If the engine doesn’t start on the second
try, wait at least five minutes before using the
intake air preheater again.
Starting After Extended
Shutdown or Oil Change—CAT,
Cummins, DDE S60, M-B
An engine in storage for an extended period of time
(over winter, for example) may accumulate water in
the oil pan. Oil diluted by water cannot provide ad-
equate bearing protection at start-up. For this reason,
change the engine oil and filters after extended
storage.
Do the following steps after an oil change or after the
engine has been shut down for more than three
days:
1.
Make sure the transmission is filled with the cor-
rect type of fluid, as recommended by the trans-
mission manufacturer.
2.
Make sure the fuel tank is full. If air has entered
the fuel system, prime the fuel system, using the
engine manufacturer’s instructions.
3.
If the engine is equipped with a fuel/water sepa-
rator, drain off any accumulated water.
4.
Check the drive belts to make sure they are in
good condition and properly adjusted. Replace
any drive belts that are cracked, worn, or glazed.
5.
Check the turbocharger for signs of oil or ex-
haust leaks. Correct any problems before starting
the engine.
6.
Check the engine mounting bolts for tightness.
Retighten them if necessary.
7.
Make sure the battery cable connections are
clean and tight. Check that the batteries are
charged.
8.
Start the engine. See "Engine Starting".
Engine Break-In—CAT,
Cummins, DDE S60, M-B
Caterpillar
Every Caterpillar engine must pass a full-load opera-
tion test on a dynamometer before shipment, elimi-
nating the need for a break-in period. Only an initial
operational check is necessary.
Cummins
Cummins engines are run on a dynamometer before
being shipped from the factory. They do not require a
break-in period.
DDE S60
Detroit Diesel engines can be put to work upon deliv-
ery without having to follow a formal break-in sched-
ule. The engine has been "run-in" on a factory dyna-
mometer during performance and quality assurance
tests prior to shipment.
Mercedes-Benz
Every Mercedes-Benz engine is tested on a dyna-
mometer before shipment. Therefore, no break-in
period is necessary for the MBE4000 engine. Before
running the engine for the first time, follow the in-
structions in Chapter 2 of the
MBE4000 Engine Op-
erator’s Manual
.
Engines and Clutches
7.10