2 0 0 8 K n I G h t
chassIs InformatIon — 10
209
Drive-away Protection:
With the jacks extended and the park brake
is released or transmission placed in gear,
a warning alarm will sound and all LEDs
will illuminate. The jacks will automatically
retract. A full visual inspection is required to
confirm full retraction of jacks before moving
motorhome.
Maintenance:
At weekly intervals, use 100% silicone spray
on the jack rod. This will help prevent moisture
damage to surface of the jack rod. If parked
near coastal areas, apply more frequently.
Occasional oil or grease on the extended jack
rod is normal.
Remove dirt and road debris from the
jacks as needed.
Check the fluid level every month with
all jacks retracted. The fluid level should
begin to flow from the weep hole.
Inspect and clean all hydraulic pump
electrical connections every 12 months.
For jacks equipped with a grease fitting at
the bottom of the cylinder, two pumps of
grease should
be sufficient for
20 to 30 uses.
DO NOT
over
grease. Damage
to the rod seal
will occur.
Fluid change
interval is 36
months.
Adding Fluid:
If the leveling system makes unusual noise or
the alarm sounds when driving around corners or
over bumpy roads, this indicates a low fluid level.
1. Chock all wheels for safety.
2. Ensure all jacks are retracted.
3. Unscrew the fill plug from the top of
the pump. Slowly fill the reservoir with
Dexron 3 Mercon ATF
hydraulic fluid
until ¼"
from the fill plug.
5. Replace plug fill.
engIne - general InformatIon
The diesel engine operates differently from the
conventional gasoline engine. Gasoline engines
control engine speed using a butterfly throttle
plate controlling air/fuel mixture inlet flow. As
the throttle plate opens, vacuum created by the
piston velocity draws the metered fuel/air charge
into the combustion chamber, then ignites from
a controlled electric ignition source. Closing the
throttle plate limits the fuel/air supply, slowing
engine speed, increasing intake manifold
vacuum.
The diesel engine in the motorhome controls
engine speed by varying fuel supply only. No
throttle plates are used. An exhaust driven
turbine system (turbocharger) compresses the
fresh air supply into the engine. The fuel is
injected under pressure into the combustion
chamber. Ignition of fuel/air charge occurs
from heat generated by rapid high compression.
The turbo boost gauge registers amount of
intake manifold pressure measured in lbs./in².
Therefore, no intake manifold vacuum exists.
Diesel engine RPM (revolutions per minute)
operating speeds are generally much lower than
that of the gasoline engine. Peak torque and
horsepower output values occur at much lower
engine speeds. Idle speeds between the two
engine types are similar, however maximum
engine speeds are quite different. The gasoline
engine generally is not regulated to a maximum
engine speed. The maximum engine speed on a
diesel engine is controlled by an engine speed
governor set by the engine manufacturer.
WARNING
DO NOT operate a diesel engine
where there are or can be combustible
vapors. Vapors can be drawn through
the air intake system and cause engine
acceleration and over-speeding, resulting
in fire, explosion and extensive property
damage. Numerous safety devices are
available, such as air intake shutoff
devices, to minimize risk of an engine
over-speeding where an engine (due
to its application) might operate in a
combustible environment, such as fuel
spills or gas leaks.
070185c
090506
Fill Plug
Level Sensor
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