3. NEVER overfill trailer fuel tank – It is important to 5. Figure 40 below reflects a full fuel system. read the trailer fuel gauge when filling trailer fuel tank.
DO NOT wait for fuel to rise in filler neck (See Figure 38).
Figure 38. Full Trailer Tank | Figure 40. Full Fuel System |
WARNING:
DO NOT
4.Once the trailer tank is full, the secondary inner tank can be filled (See Figure 39). Notice how the trailer filler tube level rises when the internal tank is filled.
Figure 39. Filling Secondary Internal Fuel Tank
6.Fuel from the engine return line will drain into the secondary internal fuel tank. This fuel will eventually drain into the primary trailer tank in order to return to the engine.
WARNING:
It is recommended to only fill the internal secondary take to 3/4 full in order to allow for fuel return, fuel expansion, and to avoid spillage. See Figure 41 for fuel expansion.
Figure 41. Fuel Expansion
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