freightliner 108SD, Руководство пользователя

Страница: 164 / 192

13.1
Check the web for fraying, cuts, extreme
dirt and dust, or for severe fading from
exposure to sunlight, especially near the
buckle latch plate and in the D-loop guide
area.
13.2 Check operation of the buckle, latch, Kom-
fort Latch or Sliding Komfort Latch (if
equipped), web retractor, and upper seat
belt mount on the door pillar. Check all
visible components for wear or damage.
13.3 Check the seat belt and tether belt con-
nection points and tighten any that are
loose.
IMPORTANT: Use ultralow-sulfur diesel (ULSD)
with 15 ppm sulfur content or less. Failure to
use ULSD fuel may void the warranty on emis-
sion components.
14. Check the fuel level in the fuel tank(s). To keep
condensation to a minimum, fuel tanks should be
filled at the end of each day.
15. Adjust the rearview and down view mirrors as
necessary.
16. Test the service brakes.
16.1 With the engine running and air system
fully charged, set the parking brake.
16.2 Put the vehicle in the lowest gear and
gently attempt to move it forward. The ve-
hicle should not move.
If the vehicle moves, the parking brakes
are not operating correctly and must be
repaired before the vehicle is operated.
Natural Gas Fuel System Inspection,
If Equipped
1.
Inspect fuel tanks for dents, scratches, gouges,
or other signs of damage. Inspect the fuel lines
and connections for leaks.
Check that the fuel tanks are securely mounted.
Look for signs of abrasion between components.
Compressed Natural Gas (CNG) Fuel System :
Ensure that the CNG fuel cylinder storage box is
secured to the frame. Inspect for signs of loose-
ness.
Liquefied Natural Gas (LNG) Fuel System : En-
sure that the LNG fuel tank is secured to the
mounting brackets and that the mounting
brackets are secured to the frame. Ensure all
rubber isolator straps are secure around the LNG
fuel tank.
2. Check for the presence of all required decals
present in the following locations:
•
Gas detection system overhead console;
•
Above the door handle on both doors;
•
Left front bumper;
•
End-of-frame crossmember;
•
LNG fuel tank fill port (maximum psi), if
equipped.
3. Check for the presence of vent caps on pressure
relief valves and devices. If any caps are miss-
ing, have the fuel system inspected by a quali-
fied technician.
CNG Fuel System : Each fuel cylinder should
have two caps (one on each end), which are vis-
ible on the back of the CNG fuel cylinder storage
box. One additional cap is located on the pres-
sure relief valve on the inboard side of the CNG
fuel box, next to the fuel outlet line.
LNG Fuel System : A red cap should be present
on the secondary relief valve ( Fig. 21.9 ).
4. Inspect all plumbing components, including the
fuel shutoff valve(s), primary and secondary relief
valves, and the LNG vapor shutoff and excess
flow valves, if equipped, for signs of damage or
leaks. See
Fig. 21.9 or Fig. 21.10 .
Inspect the fuel fill fitting for signs of damage or
leaks.
Inspect all lines for signs of leaks or damage,
and check all threaded connections.
5.
Inspect all fuel gauge components for signs of
leaks or damage. Inspect the LNG fuel level
sender cable and wiring, if equipped.
6. Inspect all coolant hoses for signs of chafing,
kinks, or leaks. The LNG fuel system utilizes
coolant hoses between the engine and the va-
porizer; the CNG fuel system utilizes coolant
hoses between the engine and the pressure
regulator inside the fuel panel.
7. If equipped with an LNG fuel system, check the
fuel tank pressure gauge to ensure that pressure
Pre- and Post-Trip Inspections and Maintenance
21.8