BA 901/1101 en – Edition 2.1 * 91101b320.fm 3-7
Operation
3.5 Indicator lights and warning lights (overview)
28 Indicator light (red) – hydraulic oil filter
Indicates inadmissibly high pressure in the hydraulic return line to the reservoir. In this
case:
☞ Have the hydraulic oil return filter checked and, if necessary, replaced by a Wacker
Neuson service center.
☞ The hydraulic oil filter indicator light can illuminate or flash until the machine has
reached its operating temperature.
24 Indicator light (red) – air filter
Illuminates if air filter is contaminated
☞ Stop the machine
☞ Stop the engine immediately and check the outside and inside filters
29 Indicator light (red) – alternator charge function
The coolant pump no longer runs if the V-belt is faulty. Danger of engine
overheating or breakdown!
If the indicator light illuminates with the engine running:
☞ Stop the engine immediately and
☞ Have the cause repaired by a Wacker Neuson service center
The V-belt is malfunctioning or there is an error in the charging circuit of the alternator if
the indicator light illuminates with the engine running. The battery is no longer charged.
31 Indicator light (red) – engine oil pressure
Illuminates if the engine oil pressure is too low. In this case:
☞ Stop the machine
☞ Stop the engine immediately and check the oil level
The indicator light illuminates when the starter is turned on and goes out as soon as the
engine runs.
32 Indicator light (red) – coolant temperature
Illuminates if the coolant temperature is too high, stop the machine immediately and stop
the engine
Never open the radiator and never drain coolant if the engine is warm since the
cooling system is under high pressure
Burn hazard!
☞ Wait at least 10 minutes after stopping the engine!
☞ Wear protective gloves and clothing
☞ Open the cap to the first notch and release the pressure
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