Engine Starting-Cat, Cummins, Dde S60, M-B - freightliner CENTURY CLASS S Driver Manual

there is a fishtail motion, turn the engine brake sys-
tem OFF immediately and do not activate it until road
conditions improve.
Check your progressive engine braking switch often
for proper position, since road conditions can change
quickly. Never skip a step when operating the pro-
gressive braking system. Always go from OFF to
LOW and then to a higher position. See
for the proper operation of the engine brake.
Engine Starting—CAT,
Cummins, DDE S60, M-B
Normal Starting
For cold-weather starting, refer to "Cold-Weather
Starting" later in this chapter.
Whenever you start an engine, watch for any signs
of engine problems. If the engine vibrates, misfires,
or makes unusual noises, turn the engine off as soon
as possible and determine the cause of the problem.
Frequently, engine damage may be avoided by a
quick response to early indications of problems.
CAUTION
When starting a vehicle equipped with a manual
transmission and clutch lockout switch, the
clutch pedal must be fully depressed during the
entire start sequence. Failure to do so can cause
the pinion to release and re-engage, which could
cause ring gear and starter pinion damage.
If a vehicle does not start on the first attempt,
make sure that the engine has completely
stopped rotating before reapplying the starter
switch. Failure to do so can cause the pinion to
release and re-engage, which could cause ring
gear and starter pinion damage.
Moving a vehicle with the starter and/or using the
starter to bump the engine for maintenance pro-
cedures is strictly prohibited. Use of these meth-
ods to bump the engine over or move the vehicle
can cause the pinion to release and re-engage,
which could cause ring gear and starter pinion
damage.
IMPORTANT: The starter can not be used for
priming the fuel system. Priming is done by op-
erating the manual hand priming pump located
on the fuel filter module, or connecting an elec-
tric priming pump to the priming port on the fuel
filter module. See the engine operation manual
for complete instructions.
Prestart
NOTE: These prestart steps apply to all en-
gines.
Chapter 2
1. Perform the engine pretrip inspection and daily
maintenance checks in
2. Apply the parking brake.
NOTE: On vehicles equipped with a neutral start
switch, the transmission must be in neutral be-
fore the engine can be started. For air start sys-
tems, check the air supply before starting the
engine. There must be 100 psi (689 kPa) of air
pressure available.
3. For manual transmissions, place the transmis-
sion in neutral and disengage the clutch.
For automatic transmissions, make sure the
transmission shift control is in neutral or park.
Starting Precautions
Do not crank the engine for more than 30 sec-
onds at a time. Wait two minutes after each try to
allow the starter to cool. Failure to do so could
cause starter damage.
NOTE: Some starters are equipped with op-
tional overcrank protection. If overcranking oc-
curs, a thermostat breaks the electrical circuit to
the starter motor until the motor has cooled.
Protect the turbocharger during the start-up by
not opening the throttle or accelerating the en-
gine above 1000 rpm until minimum engine idle
oil pressure registers on the gauge. Failure to do
so could damage the turbocharger.
Never pour fuel or other flammable liquid into the
air inlet opening in the air intake in an attempt to
Engines and Clutches
Chapter
CAUTION
CAUTION
WARNING
11.
7.6