3-14 OM 28Z3 US – Edition 2.0 * * 28Z3b330.fm
Operation
When the engine has started ...
☞ Check whether all indicator lights have gone out:
☞ Let the engine warm up
At cold temperatures:
☞ Increase the engine speed slowly
☞ Do not run the engine at full load until it has reached its operating temperature
Engine warm-up
After the engine has started, allow it to warm up at slightly increased idling speed until it
reaches its operating temperature of 70 °C (158 °F) (coolant). Run the engine with no load
during the warm-up phase (fold left-hand side control lever base up). During the warm-up
phase, check for unusual noise, exhaust color, leaks, malfunctions or damage. In case of
malfunctions, damage or leaks, park and secure the machine, and find out the cause for
the damage and have it repaired.
Jump-starting the engine (supply battery)
Safety instructions
Warning!
Explosion hazard. A frozen battery may explode during a jump-starting opera-
tion.
• Do not jump-start the engine if the battery is frozen.
• Dispose of the frozen battery in accordance with local environmental
regulations.
• Replace the battery.
Caution!
Possibility of equipment damage or injury from improper jump-starting.
• Make sure the jumper cables are rated for 12 V and the maximum CCA
rating of the battery.
• The cable clamping ends shall be colored red for positive post connec-
tors, and black for the negative post connectors.
• To avoid sparking, the excavator must not touch the jump-starting vehi-
cle when connected with jumper cables.
• Use a 12 volt source, either in the form of another battery or a charger
equipped for jump starting. Using higher or lower voltage sources can
damage the electrical system and potentially cause injury.
• To avoid short circuits, the jumper cable connected to the positive + ter-
minal of the starting battery must never be brought into connection with
electrically conductive vehicle parts.
• Route the jumper cables so they do not become entangled in rotating
components in the engine compartment.
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