SECTION 55 - ELECTRICAL SYSTEM
55-6
Op. 55 000
GENERAL ELECTRICAL INFORMATION
The electrical system is a 12-volt negative (–) ground
system that provides battery voltage to the Electronic
Instrument Cluster (EIC), starting circuit, and other
electrical components.
The electrical system is made up of the following
components:
1. Battery - Power supply and storage.
2. Alternator/Regulator - Power supply and source
to maintain fully charged system.
3. Starter motor - To crank engine for starting.
4. Ignition switch - Used to control electrical circuits
and direction of battery voltage.
5. Electronic Instrument Cluster (EIC)
* Monitors engine and operator functions and
signals operator of disruptions or faults in the
circuits.
* Displays monitored functions.
* Controls engine fuel system (fuel shut off).
* Provides engine shutdown if fault occurs in
engine oil pressure or hydrostatic charge
pressure circuits.
* Provides safety interlock for the boom and
bucket control valve spools.
* Provides a diagnostic mode for checking EIC
board circuits.
* Provides an anti-theft mode to electrically
lock the loader boom and bucket; the engine
will start with the Service/Run switch in the
“SERVICE” position.
6. Fuse blocks/ fuses/ circuit breakers, cab and
engine - Used to protect the electrical circuits and
glow plug circuit.
7. Fuel pump - Supplies fuel from the tank to the
injection pump.
8. Glow plugs - Used to provide aid in cold engine
starting.
9. Fuel solenoid - Controls fuel flow and is
controlled by the EIC.
10. Switches - Used to control other electrical
circuits, lights, etc.
IMPORTANT: Do not connect any electrical circuits
at the ignition key switch or cab fuse block(s) unless
there are written instructions telling you to do so or
damage to the EIC board may occur.
IMPORTANT: If any servicing or adjustments require
the battery to be disconnected, or welding is required
on the skid-steer loader, disconnect the negative (–)
ground cable. Failure to disconnect the battery may
result in damage to the EIC (electronic instrument
cluster) monitoring system and other electrical
components.
IMPORTANT: If the EIC requires removal from the
dash area or the skid-steer loader, disconnect the
negative (–) ground battery cable. This will shut off
power to the EIC and prevent damage to the EIC
board, or prevent blowing the 5-amp fuses, if the
board is accidentally grounded.
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