Kenworth T410, Руководство водителя

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Page 260 CAT: 8612 November 2019
PREVENTIVE MAINTENANCE
WELDING PRECAUTIONS
To prevent damage to gauges, interface modules and other electronic
and electrical equipment, disconnect the battery cables before electric arc
welding on a vehicle. If arc welding of any frame-mounted components
is required, ensure the welding ground lead is connected directly to the
component, preferably directly adjacent to the weld groove. Bearings and
other parts will be damaged if electric current must pass through them
when completing the circuit.
Welding to frame rails will void the frame rail warranty.
Observe these recommended procedures to protect electronic systems
during welding operations.
If ABS system is installed, disconnect ECU. Servicing Systems and Units
refer to Electronic Customised Maintenance Manual, Section 4 - Braking,
Bendix Manuals BW2428 or SD-13-4983.
1. With the engine turned OFF, disconnect all electronic connections
to the vehicle batteries.
2. Remove battery power cable and insulate it from the vehicle.
3. Disconnect all Electronic Control Modules (ECM) connectors (on
electronic engines and transmissions).
4. Do not use the ECM or engine ground stud for the ground of the
welding probe.
5. Ensure the ground connection for the welder is as close to the
weld point as possible. This ensures maximum weld current and
minimum damage to electrical components on the vehicle.