freightliner WALK-IN VAN CHASSIS Operator's Manual page 139

Key Switch Status Ready Lamp Status
Off
On
On
On
On
On
On
On
On
4. Make sure that the transmission is in the Neutral
(N) position on the shift pad display. If NN is not
displayed, press N on the shift pad.
5. Verify that the green propulsion system ready
indicator is illuminated.
If the indicator is illuminated, the hydraulic hybrid
system is ready to propel the vehicle. Go to
Driving the Vehicle in this chapter.
If the indicator is not illuminated, the hydraulic
hybrid system will not allow the vehicle to shift
into drive (D) or reverse (R) until the high pres-
sure accumulator is sufficiently charged. The en-
gine must be started to allow the secondary
pump to build up fluid pressure in the accumula-
tor. Perform the following substeps.
IMPORTANT: Do not depress the throttle
pedal while starting the engine.
5.1 Turn the ignition switch to the START po-
sition. After the engine starts, release the
key in the ON position.
NOTICE
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.
5.2 Bring the engine up to operating speed
gradually as it warms up and develops
stable oil pressure.
IMPORTANT: When the engine is started, it
takes a short time to build up a lubricating
Hydraulic Hybrid Wait to Start Status
Wait to Start Lamp Status
—
Off
Off
On
On
Off
Off
On
On
Table 16.2, Hydraulic Hybrid Wait to Start Status
Engine State
—
On
Off
On
Off
On Running
Off Running
On Running
Off Running
oil film between the shafts and bearings, and
between the pistons and cylinder walls. The
oil pressure gauge indicates any drop in lu-
bricating oil pressure within 15 seconds of
engine start-up. See the Cummins Operation
and Maintenance Manual for minimum idle
oil pressure specifications.
NOTE: It is normal for the engine to con-
tinue running for up to 30 minutes after
charging is complete, as certain parameters
must be met before the hydraulic hybrid sys-
tem can shut the engine off.
5.3 Once the system is pressurized, the en-
gine will shut itself off and the propulsion
system ready indicator will illuminate to
indicate that the hydraulic hybrid system is
ready.
6. Go to Driving the Vehicle in this chapter.
Engine Shutdown
Emergency Engine Shutdown
If any of the following occur, shut down the engine
immediately:
•
The oil pressure gauge needle swings back
and forth or falls sharply.
•
The exhaust pipe gives off heavy smoke.
•
The coolant and/or oil temperature climb ab-
normally.
•
Abnormal sounds suddenly occur in the engine
or turbocharger.
Hydraulic Hybrid
Message Displayed
— —
Off WAIT TO START
Off START ENGINE
Off WAIT
Off —
WAIT
WAIT
—
—
16.16