BA 35101/02/ 03 EN – Edition 1.0 * 35101_02_03b330.fm 3-25
Operation
3.16 Jump-starting the engine (external battery)
Safety instructions regarding external starting aids
The jump lead connected to the positive (+) terminal of the starting battery
must never be brought into connection with electrically conductive vehicle
parts – danger of short circuit!
☞ The external power source must deliver 12 V; higher supply voltages will
damage the electrical system of the vehicles!
☞ Use only authorised jump leads which conform to the safety requirements
and which are in perfect condition!
☞ Route the jump leads so they cannot catch on rotating components in the
engine compartment!
Providing external starting aid
☞ Proceed as follows:
• Drive the jump-starting vehicle close enough to the wheel loader so that the jump
leads can reach to connect the two batteries
• Let the engine of the jump-starting vehicle run
• First connect one end of the red jump lead (+) to the + terminal of the flat battery,
then connect the other end to the + terminal of the starting battery
• Connect one end of the black jump lead (-) to the – terminal of the starting battery
• Connect the other end of the black jump lead (-) onto a solid metal component fimly
mounted on the engine block or onto the engine block itself. Do not connect it to the
negative terminal of the flat battery, as otherwise explosive gas emerging from the
battery can ignite if sparks are formed!
• Start the engine of the machine with the flat battery
Once the engine has started:
• With the engine running, disconnect both jump leads in exactly the reverse order (first
remove the – terminal, then the + terminal) – this prevents sparking in the vicinity of
the battery!
Fig. 50: Starting aid with jump leads
Flat battery
Starting battery
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