Thomas SAF-T-LINER C2, Руководство по обслуживанию

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47–06 Fuel Rail Fitting and
Injector Inspecting,
Propane Engine
WARNING
Liquid propane can cause serious burns should it
contact the skin or eyes. When handling propane,
always wear approved protective gloves and eye
protection to prevent contact.
Propane is extremely flammable, and can ignite if
an ignition source is present, causing burns and
other serious injuries. Keep sparks and flames
away from propane. Do not smoke near propane
or when refueling the vehicle.
See the safety precautions listed in Chapter 17 of
the
Saf-T-Liner C2 School Bus Driver’s Manual, or
take the vehicle to an authorized Freightliner
dealer. Failure to observe these precautions could
lead to the ignition of the liquid propane, which
could cause severe bodily harm, or death, or
property damage.
NOTE: The fuel rails and injectors do not re-
quire any adjustments.
1. Make certain that all electrical connections are
connected and locked.
2. Make certain the fuel rail is securely attached to
the engine.
3. Use an electronic leak detector or a liquid-leak
detection solution to check all injectors, rails, and
fittings for fuel leaks.
47–07 Fuel Filter Replacing,
Propane Engine
WARNING
Liquid propane can cause serious burns should it
contact the skin or eyes. When handling propane,
always wear approved protective gloves and eye
protection to prevent contact.
Propane is extremely flammable, and can ignite if
an ignition source is present, causing burns and
other serious injuries. Keep sparks and flames
away from propane. Do not smoke near propane
or when refueling the vehicle.
See the safety precautions listed in Chapter 17 of
the
Saf-T-Liner C2 School Bus Driver’s Manual, or
take the vehicle to an authorized Freightliner
dealer. Failure to observe these precautions could
lead to the ignition of the liquid propane, which
could cause severe bodily harm, or death, or
property damage.
The propane system is equipped with two filters—
one before the fuel enters the tank, and another be-
fore it enters the engine. The replacement procedure
that follows applies to both filters. See
Fig. 6 and
Fig. 7 .
IMPORTANT: Venting the fuel supply and return
lines must be performed outside. Do not release
propane inside a garage or building. Once the
fuel lines are vented, the vehicle can be pulled
into the garage.
NOTICE
Damage may occur to the valve(s) if they are over-
tightened.
1. Turn the fuel supply and return valves clockwise
to shut them off at the tanks.
NOTE: Both the fuel supply and return lines
must be vented to ensure all pressure is re-
moved from the fuel rails and lines.
2. To vent the system, slowly crack open the fuel
supply and return lines that are connected to the
supply and return valves until a white mist ap-
pears. Continue cracking the lines open until
there is absolutely no pressure.
3. Disconnect the fuel supply and return lines from
the valves until all service work is finished.
4. Cover the open lines to prevent contaminants
from entering the system.
5. Remove and discard the filter.
6. Install the new filter, making certain the arrow on
the filter points toward the tank or engine as ap-
plicable.
7. Connect both ends of the filter to the fuel line
and tighten 28±10 lbf·ft (38±14 N·m).
8. Remove the protective cover from the fuel lines.
Fuel
47
Saf-T-Liner C2 School Bus Maintenance Manual, March 2019
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