Blue Bird Coachworks 450 LXi, Руководство пользователя

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450 LXi Owner Manual 5-3 Engine Maintenance
Rev. “C”
~ 5-3-39 ~
5-3.42.2 Drain the Water and the Sediment
Fuel tanks should contain some provision for draining water and draining sediment from the bottom of the fuel tanks.
Open the drain valve on the bottom of the fuel tank in order to drain the water and the sediment. Close the drain valve.
Check the fuel daily. Drain the water and sediment from the fuel tank after operating the engine or drain the water and
sediment from the fuel tank after the fuel tank has been fi lled. Allow fi ve to ten minutes before performing this procedure.
Fill the fuel tank after operating the engine in order to drive out moist air. This will help prevent condensation. Do not fi ll the
tank to the top. The fuel expands as the fuel gets warm. The tank may overfl ow.
Some fuel tanks use supply pipes that allow water and sediment to settle below the end of the fuel supply pipe. Some fuel
tanks use supply lines that take fuel directly from the bottom of the tank. If the engine is equipped with this system, regular
maintenance of the fuel system fi lter is important.
5-3.42.3 Fuel Storage Tanks
Drain the water and the sediment from the fuel storage tank during the following conditions:
Weekly
Oil Change
Refi ll of the Tank
This will help prevent water or sediment from being pumped from the storage tank into the engine fuel tank.
If a bulk storage tank has been refi lled or moved recently, allow adequate time for the sediment to settle before fi lling the
engine fuel tank. Internal baffl es in the bulk storage tank will also help trap sediment. Filtering fuel that is pumped from the
storage tank helps to ensure the quality of the fuel. When possible, water separators should be used.
5-3.43 Hoses and Clamps - Inspect/Replace
Inspect all hoses for leaks that are caused by the following conditions:
Cracking
Softness
Loose Clamps
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Check the following conditions:
End fi ttings that are damaged or leaking
Outer covering that is chafed or cut
Exposed wire that is used for reinforcement
Outer covering that is ballooning locally
Flexible part of the hose that is kinked or crushed
Armoring that is embedded in the outer covering
A constant torque hose clamp can be used in place of any standard hose clamp. Ensure that the constant torque hose clamp
is the same size as the standard clamp.
Due to extreme temperature changes, the hose will heat set. Heat setting causes hose clamps to loosen. This can result in
leaks. A constant torque hose clamp will help to prevent loose hose clamps.
Each installation application can be different. The difference depends on the following factors:
Type of hose
Type of fi tting material
Anticipated expansion and contraction of the hose
Anticipated expansion and contraction of the fi ttings
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NOTICE: Do not bend or strike high pressure lines. Do not install bent or damaged lines, tubes or hoses. Repair
any loose or damaged fuel and oil lines, tubes and hoses. Leaks can cause fi res. Inspect all lines, tubes and hoses
carefully. Tighten all connections to the recommended torque.