Paccar MX-13 – Warning, battery clamp and negative terminal

– Do not disconnect the vehicle batteries until the DEF dosing system has completed the purge cycle.

– Before beginning to remove and/or disconnect any components, wait at least 5
minutes after the key switch is turned OFF for the aftertreatment DEF dosing system
to purge DEF from the system.

– The purge cycle is an automatic process and does not require active intervention.
The aftertreatment DEF dosing unit creates an audible pumping noise during the purging process.

– Electrical shock hazard: Never disconnect the battery clamp when the engine is

– Disconnecting the battery clamps while the engine is running may result in death, personal injury, or equipment damage from electrical arching or damage to electronic components.

– Turn off the engine and place the ignition switch in the OFF position before disconnecting the battery clamps.

– Do not place any tools or other materials on top of or close to the batteries. This can cause dangerous high-current short circuit and, in the worst case, a battery explosion. Keep all objects away from the battery terminals.

– Always break the contact between the battery clamp and the negative terminal before working on the vehicle. Working on a vehicle while the battery is connected may result in electrical injury or damage.

– Always disconnect the battery at the negative terminal when performing service procedures.

– Battery acid can cause chemical burns.

– If you come into contact with battery acid: flush your skin with water and/or apply baking soda or lime to help neutralize the acid.

– If battery acid comes into contact with the eyes, flush immediately with water and seek medical attention.

– Wear protective clothing when handling any part of the battery.


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