Blue Bird Coachworks 450 LXi, Руководство пользователя

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5-1 Engine Operation
450 LXi Owner Manual
~ 5-1-26 ~ Rev. “C”
5-1.12.3 Starting Problems
An occasional starting problem may be caused by one of the following items:
Low battery charge
Lack of fuel
Problem with the wiring harness
If the engine fuel system has been run dry, fi ll the fuel tank and prime the fuel system. Refer to
“Fuel System - Prime”
in this
manual.
If the other problems are suspected, perform the appropriate procedure in order to start the engine.
5-1.12.4 Problems with the Wiring Harness
Locate the ECM. Two harness connectors are attached to the ECM. The left connector is the engine harness and the right
connector is the chassis harness. Check the connectors in order to ensure that the connectors are secure. Lightly pull each of
the wires in the chassis harness.
Pull each wire with approximately 4.5 kg (10 lb) of force. The wire should remain in the connector.
If a wire is loose, push the wire back into the connector. Pull the wire again in order to ensure that the wire is secure.
Start the engine. If the engine does not start, consult the nearest Caterpillar dealer for assistance.
5-1.12.5 Starting with Jump Start Cables
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If the installation is not equipped with a backup battery system, it may be necessary to start the engine from an external
electrical source.
First, determine the reason that it is necessary to start with power from an external source.
Many batteries which are considered unusable are still rechargeable. After jump starting, the alternator may not be able
to fully recharge batteries that are severely discharged. The batteries must be charged to the proper voltage with a battery
charger. For information on charging and testing see your Caterpillar dealer.
Turn the start switch on the stalled engine to the OFF position. Turn off all accessories.
Connect one positive end of the jump start cable to the positive cable terminal of the discharged battery. Connect the
other positive end of the jump start cable to the positive cable terminal of the electrical source.
Connect one negative end of the jump start cable to the negative cable terminal of the electrical source. Connect the
other negative end of the jump start cable to the engine block or to the chassis ground. This procedure helps to prevent
potential sparks from igniting combustible gases that are produced by some batteries.
Charge the batteries. The engine will not continue to run after starting if the batteries have not been charged.
Start the engine.
Immediately after the stalled engine is started, disconnect the jump start cables in reverse order.
Refer to the Electrical Schematic for your engine. Consult your Caterpillar dealer for more information.
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WARNING!!
Improper jump start cable connections can cause an explosion resulting in personal injury.
Prevent sparks near the batteries. Sparks could cause vapors to explode. Do not allow jump start cable ends to
contact each other or the engine.
NOTICE: Using a battery source with the same voltage as the electric starting motor. Use ONLY equal voltage for
jump starting. The use of higher voltage will damage the electrical system.
Do not reverse the battery cables. The alternator can be damaged. Attach ground cable last and remove fi rst.
When using an external electrical source to start the engine, turn the engine control switch to the “OFF” position. Turn
all electrical accessories OFF before attaching the jump start cables.
Ensure that the main power switch is in the OFF position before attaching the jump start cables to the engine being
started.