freightliner WALK-IN VAN CHASSIS Operator's Manual page 81

Pre- and Post-Trip Inspections and Maintenance
IMPORTANT: Use only ultralow-sulfur diesel
(ULSD) fuel with 15 ppm sulfur content or
less, based on ASTM D2622 test procedure.
Failure to use ultralow-sulfur diesel fuels
may void the warranty on emissions compo-
nents.
10.1 To keep condensation to a minimum, fill
diesel fuel tanks at the end of each day,
but not to more than 95 percent of liquid
capacity. Select the proper grade of fuel,
as specified by the engine manufacturer.
WARNING
Do not mix gasoline or alcohol with diesel fuel.
This mixture could cause an explosion, possibly
resulting in serious personal injury or death. Do
not fill the fuel tanks in the presence of sparks,
open flames, or intense heat. These could ignite
the fuel, possibly causing severe burns.
10.2
Always strain or filter diesel fuel before
putting it into the tanks. This will lengthen
the life of the engine fuel filter and reduce
the chances of dirt entering the engine.
11. Inspect the front and rear suspension compo-
nents, including springs, spring hangers, shocks,
and suspension brackets.
11.1 Check for broken spring leaves, loose
U-bolts, cracks in the suspension
brackets, and loose fasteners in the spring
hangers and shackles.
11.2 Inspect the shock absorbers for loose fas-
teners and leaks.
11.3
Tighten all loose fasteners and have any
components replaced that are worn,
cracked, or otherwise damaged.
11.4 On vehicles with air suspensions, check
for leaks. Check air suspension compo-
nents for cuts and bulges.
WARNING
Do not replace individual leaves of a damaged
front or rear suspension leaf spring assembly;
replace the complete spring assembly. Visible
damage, such as cracks or breaks, to one leaf
causes hidden damage to other leaves. Replace-
11.5
ment of only the visibly damaged part(s) is no
assurance that the spring is safe. If cracks or
breaks exist on front spring assemblies in either
of the two top leaves, a loss of vehicle control
could occur. Failure to replace a damaged spring
assembly could cause an accident resulting in
serious personal injury or property damage.
12.
Check the oil- and air-pressure warning systems.
When the engine is started, oil- and air-pressure
warnings will come on until the oil and air pres-
sure rise above a preset minimum. After starting
the engine, make sure the oil- and air-pressure
warning systems are operating and that the
buzzer stops sounding when the preset minimum
is reached.
12.1 If the warning systems do not come on
when the ignition is turned on, have the
systems repaired.
12.2
If the air pressure in both systems is
above the preset minimum when the en-
gine is started, test the low air pressure
system by lowering the pressure to below
this range, or until the warning system
comes on.
NOTE: The air pressure in both the primary
and secondary air reservoir systems must
be above 65 psi (448 kPa) on most vehicles.
13. Make sure that the electric horn works.
If a horn is not working, have it replaced before
trip departure.
14. Make sure all the exterior lights are working-
.Check the high and low beams of the head-
lights. Clean the windshield, side, and rear win-
dows (if equipped) with a long-handled or
telescoping window cleaning device and stan-
dard cleaning solutions. Stand only on the
ground, on a stepladder, or an elevated walkway.
The vehicle entry/exit steps and handholds are
not designed for this purpose. The tires, fenders,
engine, and other under-hood components do
not have adequate gripping surfaces and hand-
holds.
DANGER
Do not loosen or remove the parking brake clamp
ring for any purpose. See
emergency brake section of the brake chamber is
Fig. 11.7. The parking/