Perkins 1204E-E44TA Operation And Maintenance Manual page 79

SEBU8605-01
2. Ensure that the fuel supply to the engine is turned
off.
3. Disconnect the negative battery cable from the
battery. If a battery disconnect switch is provided,
open the switch.
4. Disconnect all electronic components from
the wiring harnesses. Include the following
components:
•
Electronic components for the driven equipment
•
ECM
•
Sensors
•
Electronically controlled valves
•
Relays
•
Aftertreatment ID module
NOTICE
Do not use electrical components (ECM or ECM sen-
sors) or electronic component grounding points for
grounding the welder.
Maintenance Recommendations
Illustration 45
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. Connect the welding ground cable directly to
the part that will be welded. Place the ground
cable as close as possible to the weld in order to
reduce the possibility of welding current damage
to the following components. Bearings, hydraulic
components, electrical components, and ground
straps.
Note: If electrical/electronic components are used
as a ground for the welder, or electrical/electronic
components are located between the welder ground
and the weld, current flow from the welder could
severely damage the component.
6. Protect the wiring harness from welding debris
and spatter.
7. Use standard welding practices to weld the
materials.
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Maintenance Section
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