5-20 BA 6001/9001/10001 En – Edition 2.0 * * 6001b520.fm
Maintenance
Changing hydraulic oil
Only change the hydraulic oil if it is warm (about 50 °C / 122°F).
Lower the skip in centre position before draining the oil (dumper in straight-ahead
position).
☞ Open the drain plug to let the oil drain into a container
☞ Check the hydraulic oil tank for contamination and clean if necessary
☞ Replace the filter according to the maintenance specifications
☞ Screw the drain plug back in correctly
☞ Fill in clean hydraulic oil through the strainer
– see Filling up hydraulic oil on page 5-19
☞ Close the hydraulic oil tank correctly
☞ Let the machine run at idling speed without load for some minutes
Fouling indicator for hydraulic oil filter
A red telltale on the instrument panel monitors the filter.
Replace the filter:
• If the telltale comes on when the hydraulic oil is at operating temperature
• According to the maintenance interval
In cold weather the telltale can come on immediately when the engine is started. This is
caused by increased oil viscosity. In this case:
☞ Let the engine run at idling speed for about 2 minutes
Replacing the hydraulic oil filter element
Proceed as follows:
☞ Switch off the engine
☞ Open cover 1 by about 2 turns and wait until the oil level in the filter housing drops to
the oil level in the hydraulic oil tank
☞ Open the cover completely and remove it
☞ Pull filler pipe 2 upwards with a slightly turning movement, together with filter element 3
☞ Remove the filter element from the filler pipe and dispose of it
☞ Slide the filler pipe onto the new filter element and insert it in the filter
☞ Tighten the cover by hand
Fig. 28: Fouling indicator for hydraulic oil filter
4
Fig. 30: Hydraulic reflux filter
1
2
3
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