Filter
Top Products
THEORY OF OPERATION
E-8 E-8
CLASSIC® 300D & 300G
FIGURE E.7 - CLASSIC® 300G, ZENITH FUEL SYSTEM / GM ENGINE
NOTE: Unshaded areas of Block Logic
Diagram are the subject of discussion
Classic® 300D Perkins (Codes 10545, 10546,
10657, 10658, 10911, 10927, 11110, 11111,
11248, 11249, 11280, 11281, 11411, 11412,
11472, and 11473)
The Perkins powered Classic® 300D machines
have a mechanical governor that maintains the
engine RPM when the engine is running at high
speed. There is no operator control for RPM as
there is with 300G or 300D Kubota.
Classic® 300D Kubota (Codes: 11112, 11113,
11243, 11244, 11413, 11414, 11474, and 11475)
The Kubota powered Classic® 300D machines
utilize an electronic engine control system which
is a part of the Kubota engine. This system main-
tains a steady RPM by constantly sensing engine
speed and making adjustments as needed.
The Custom Arc Control, a potentiometer mount-
ed on the lower right control panel, allows the
operator to adjust the high idle engine speed
between 1650 and 1800 RPM. This is to allow fur-
ther adjustment of the OCV. Total OCV adjust-
ment range is about 15 volts.
+
-
ZENITH
E.C.U.
BATTERY
STARTER
MOTOR
START
AMMETER
IGNITION
SWITCH
ENGINE
ALTERNATOR
ENGINE FAILURE LAMP
H
OUR METER
FUEL PUMP
IDLE
SWITCH
E
NGINE
RPM CONTROL
GASOLINE
ENGINE
E
NGINE
CONTROL
COMPONENTS
A
ND
S
ENSORS
NEGATIVE
OUTPUT
TERMINAL
POSITIVE
OUTPUT
TERMINAL
CURRENT
SENSOR
P.C. BOARD
115 & 230VAC
RECEPTACLES
SELECTOR
SWITCH
GENERATOR
FRAME
ALTERNATOR STATOR
ROTATOR
FIELD
RECTIFIER
GENERATOR
FIELD CONTROL
RHEOSTAT
FLASHING
SLIP
R
INGS
A
RMATURE
S
HAFT
SERIES
COILS
FIELD
SHUNT
WINDINGS
RESIDUAL
MAGNETISM
INTERPOLE
COILS
GENERATOR
ARMATURE
MECHANICAL
C
OUPLING
BRUSHES
&
COMMUTATOR
Return to Section TOC Return to Section TOC Return to Section TOC Return to Section TOC
Return to Master TOC Return to Master TOC Return to Master TOC Return to Master TOC