Operating Instructions Operating the Engine
Medium Duty
(R10/06) Y53-6008 – 59 –
Starting Procedure — Normal Temperature
Use the following procedure to start your Medium Duty when
outside temperatures are at or ABOVE normal starting tem-
peratures. Check the Engine Operation and Maintenance
Manual for starting temperatures.
1. Set the parking brake.
NOTE: When any one of the following is true, oil
should be applied to the turbocharger oil inlet
port: (1) if the engine has not been started for
more than 25 days; or (2), the outside tempera-
ture is very cold; or (3), the oil filter has been
changed.
•With an oil can, squirt approximately one-half
cup (120 ml) of clean, specified engine oil into
the turbocharger oil inlet port. This will keep the
turbocharger bearings lubricated until the
engine oil pressure gets up to normal.
2. Insert key into the ignition switch.
3. Disable (or turn OFF) the following systems prior to start-
ing the engine: the exhaust brake, the dual-speed rear
axle (put in LOW), and block heater (if equipped).
4. Disengage the transmission: place the shift lever in the
Neutral position.
5. Disengage (depress) the clutch (with manual transmis-
sion).
6. Turn the ignition switch to the IGN & ACC position. For
normal temperatures, no accelerator advance is neces-
sary. See “Use of Accelerator” below. If the “WAIT TO
START” indicator lamp turns ON, wait until the indicator
lamp goes OFF (approximately 60 seconds) before
attempting to start the engine. (For each engine and
ambient temperatures, warm-up cycles will vary.)
7. Turn the ignition switch to the IGN & START position to
engage the starter. Crank the engine until it starts. If the
engine does not start within 30 seconds, release the key.
Use of Accelerator
• For mild to warm temperatures above 60°F (16°C) keep
your foot OFF the accelerator pedal while cranking. If the
engine does not start after 5 seconds, apply full throttle
while cranking.
• For below normal starting temperatures fully depress the
accelerator (throttle) pedal after engaging the starter.
NOTE: Pumping the accelerator will not assist in
starting the engine.
