3
EATON
EP Control for Medium Duty 72400 Piston Pumps Parts & Service 08-10-0003-EN-0901 September 2001
In order to assure the most
reliable installation and
operation of any electronic
control, proper component
selection and installation
procedures must be followed
with respect to interconnec-
tion wiring harnesses, input
command signal devices,
fusing, and input power
switching.
Appropriate industry practices
must be followed to prevent
damage of and shorting of all
electrical and electronic
components caused by
environmental hazards and
application specific hazards.
Typical hazards that damage
the wiring harnesses or other
components are abrasion,
moving objects, and heat from
the engine or exhaust system.
Moisture can damage poorly
sealed connectors and/or
components, causing short
circuits and other problems
like corrosion.
A switch must be installed
in line with (+ battery) power
to the electronic module, so
that power may quickly be
disconnected in case of
emergency (component failure
or inadvertent commands).
A fuse rated at the maximum
module operating current (3
Amp) must be installed in the
+ battery line to the electronic
module.
All the electrical connections
to the EP Control electronic
module must be disconnected
prior to performing any
electrical welding on the
vehicle or machine. The elec-
tronic module and/or the
hydraulic pump are not to be
used as a connection point for
electrical welding equipment.
During initial start-up and/or
checkout of the machine after
service, the machine must be
placed on jack stands to pre-
vent inadvertent movement.
The reliable operation and
suitability of this product is
dependent upon how it is
applied and the other
components used in the
system. The system integrator
must review all aspects of the
application
and all of the components
used to assure proper
operation and reliability.
This manual provides the
necessary information to
troubleshoot and repair the
EP Control for Eaton
®
Medium
Duty 72400 piston pumps.
The EP Control consists of two
main parts, the valve assembly
and the electronic module.
Note: Many EP Control
components are not repairable,
i.e., the EP Control electronic
module has internal circuitry that
is environmentally encapsulated
into its housing. Replacing the
electronic module with a new
one is necessary if the module
is the source of a fault.
Complete kits are listed along
with individual components
should you choose to replace
individual components.
CAUTION
Information contained in this parts and service manual is
accurate as of the publication date and is subject to change
without notice. Performance values are typical values.
Customers are responsible for selecting products for their
applications using normal engineering methods.
