Cub Cadet Domestic Series 7000 Service Manual page 77

Domestic Compact Electrical
About this section:
This part of the manual provides verbal descriptions of
the function of each electrical component in the sys-
tem. It is best used to compliment the Cub Cadet Wir-
ing Schematics found on disc 772-9085A-CD, available
through Cub Cadet.
The intent is to help orient the skilled but unfamiliar
technician with the electrical system on these Cub
Cadet tractors.
1. SIMILARITIES AND DIFFERENCES
BETWEEN SYSTEMS:
1.1. Series 5000, series 6000, and domestic series
7000 tractors have similar electrical systems.
They share a common dash panel and instru-
ment cluster, and are similar in operation.
1.2. The instrument cluster contains a logic board
that monitors and controls safety and operating
circuits.
1.3. Because the instrument cluster contains circuits
that may be over-loaded by a standard test light,
it is recommended that a high-impedance test
light, or DVOM be used in diagnosing most elec-
trical circuits on the domestic Cub Cadet com-
pact tractors.
NOTE: Typical of these is Thexton part #125
High Impedance Computer Circuit Tester. This
tool is available at reasonable cost through
many truck vendors, and auto-parts stores such
as NAPA.
1.4. Early versions of the Series 7000 used a hall-
effect sensor mounted in the transmission to
send a tachometer signal.
1.5. There are variations between models and within
model lines, primarily according to the engine
that is used. Various gas and diesel engines
have been sourced from Briggs& Stratton-
Daihatsu, Caterpillar, Kawasaki, and Kohler.
1.6. Current gasoline-powered domestic compact
tractors get a tachometer signal from the ignition
system.
1.7. Current diesel powered domestic compact trac-
tors get a tachometer signal from a hall-effect
sender on the crankshaft.
Domestic Compact Electrical Systems
Systems
1.8. Gasoline engines will have a magneto ground
and after-boom solenoid power-off to turn-off the
engine.
1.9. Diesel engines will have a stop solenoid on the
injector pump to shut-off the fuel supply and
turn-off the engine. See Figure 1.9.
Stop
solenoid
1.10. Charging systems differ between the engines:
the diesel engines have stand-alone alternators
with integrated voltage regulator-rectifiers.
See Figure 1.10.
Tone ring for hall-effect
tachometer
72
CAT Injector
pump
Figure 1.9
CAT alternator
CAT starter
Figure 1.10