Blue Bird Coachworks 450 LXi, Owner'S Manual

Page: 387 / 684

5-1 Engine Operation
450 LXi Owner Manual
~ 5-1-8 ~ Rev. “C”
5-1.3.6 Grounding Practices
Typical Example - Engine Ground
(1) Recommended Connections
(2) Alternate Connections
Typical Example - Frame Ground
(1) Recommended Connections
(2) Alternate Connections
Proper grounding for the engine electrical system is necessary for optimum engine performance and reliability. Improper
grounding will result in uncontrolled electrical circuit paths and in unreliable electrical circuit paths.
Uncontrolled electrical circuit paths can result in damage to main bearings, to crankshaft bearing journal surfaces, and to
aluminum components.
Engines that are installed without engine-to-frame ground straps can be damaged by electrical discharge.
To ensure that the engine and the engine electrical systems function properly, an engine-to-frame ground strap with a direct
path to the battery must be used. This path may be provided by way of a starting motor ground, a starting motor ground to the
frame, or a direct engine ground to the frame.
All grounds should be tight and free of corrosion. The engine alternator must be grounded to the negative “-“ battery terminal
with a wire that is adequate to handle the full charging current of the alternator.