Illustration 41
g01075639
Use the example above. The current flow from the
welder to the ground clamp of the welder will not
damage any associated components.
(1) Engine
(2) Welding electrode
(3) Keyswitch in the OFF position
(4) Battery disconnect switch in the open position
(5) Disconnected battery cables
(6) Battery
(7) Electrical/Electronic component
(8) Minimum distance between the component that is being welded
and any electrical/electronic component
(9) The component that is being welded
(10) Current path of the welder
(11) Ground clamp for the welder
5.
When possible, connect the ground clamp for the
welding equipment directly to the engine
component that will be welded. Place the clamp as
close as possible to the weld. Close positioning
reduces the risk of welding current damage to the
engine bearings, to the electrical components, and
to other components.
6.
Protect the wiring harnesses from welding debris
and/or from welding spatter.
7.
Use standard welding procedures to weld the
materials together.
i04150276
Severe Service Application
Severe service is the application of an engine that
exceeds the current published standards for that
engine. Perkins maintains standards for the
following engine parameters:
• Performance such as power range, speed range,
and fuel consumption
• Fuel quality
• Operational Altitude
• Maintenance intervals
• Oil selection and maintenance
• Coolant type and maintenance
• Environmental qualities
• Installation
• The temperature of the fluid in the engine
Refer to the standards for the engine or consult your
Perkins dealer or your Perkins distributor in order to
determine if the engine is operating within the defined
parameters.
Severe service operation can accelerate component
wear. Engines that operate under severe conditions
may need more frequent maintenance intervals in
order to ensure maximum reliability and retention of
full service life.
Due to individual applications, it is not possible to
identify all of the factors which can contribute to
severe service operation. Consult your Perkins
dealer or your Perkins distributor for the unique
maintenance that is necessary for the engine.
The operating environment, incorrect operating
procedures, and incorrect maintenance procedures
can be factors which contribute to a severe service
application.
Environmental Factors
Ambient temperatures
– The engine may be
exposed to extended operation in cold environments
or hot environments. Valve components can be
damaged by carbon buildup if the engine is frequently
started and stopped in cold temperatures. Hot intake
air reduces engine performance.
Quality of the air
– The engine may be exposed to
extended operation in an environment that is dirty or
dusty, unless the equipment is cleaned regularly.
Mud, dirt, and dust can encase components.
Maintenance can be difficult. The buildup can contain
corrosive chemicals.
SEBU8609
71
Maintenance Recommendations
Severe Service Application