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MAINTENANCE, LUBRICATION AND SERVICE
ELECTRICAL SYSTEM
1 Green Dot visible
Any green appearance should be
interpreted as a green dot and means
that the battery is at or above a 65%
state of charge and is ready for use or
testing. This does not automatically
mean that the battery is in good
condition.
2 Green Dot not visible (Black Dot)
This indicates that the battery is below a
65% state of charge and must be
charged before testing. A black dot does
not mean that the battery is
automatically bad.
3 Clear or Light Yellow
This means that the electrolyte level is
below the level of the built-in
hydrometer, which may have been
caused by tipping of the battery, a
cracked case, or overcharging. This
battery should be replaced.
Battery Disconnect
The battery disconnect handle is located
under the cab above the top step on
driver side.
• Turn the battery disconnect handle
to the OFF position to prevent
battery rundown when truck is
parked for an extended time. The
battery disconnect handle can be
locked in the OFF position to prevent
tampering.
• Turn the battery disconnect handle
to the ON position to operate
vehicle.
1
Battery Disconnect Hanlde
Electric and Electronic
Systems
WARNING
Always wear eye protection when working
around batteries to prevent the risk of
injury due to contact with sulfuric acid or
an explosion.
Check regularly around the engine and
engine compartment for loose or frayed
wires. Have all loose or frayed electrical
wires and cables repaired before
operating the vehicle.
Grounding Practices
Proper grounding for vehicle and engine
electrical and electronic systems is
necessary for proper vehicle and engine
performance and reliability. Improper
grounding will result in uncontrolled and
unreliable electrical paths.
Uncontrolled engine electrical circuit
paths can result in damage to main
bearings, crankshaft journals surfaces
and aluminum components.
Uncontrolled electrical circuit paths can
also cause electrical noise which may
degrade vehicle and radio performance.
Operating engines without the engine-
to-frame ground strap installed can
cause damage to the engine. To prevent
electrical discharge damage, check to
252
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Содержание M359
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