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Changing hydraulic oil
Dirt indicator for hydraulic oil filter
12
Fig. 99: Dirt indicator for hydraulic oil filter
Replacing the hydraulic oil filter element
Fig. 100: Hydraulic return filter
BA 1001/1501/2001 us – Edition 3.3 * 12001b520.fm
Important
Only change the hydraulic oil if it is warm (about 50 °C/122 °F).
Lower the skip in center 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 reservoir for contamination and clean it if necessary
Replace the filter according to the maintenance specifications
Screw the drain plug back in correctly
Add clean hydraulic oil through the screen
– see
Adding hydraulic oil on page 5-22
Close the hydraulic oil reservoir correctly
Let the machine run at idling speed without load for some minutes
A red indicator light on the instrument panel monitors the filter.
Replace the filter:
• If the indicator light illuminates when the hydraulic oil is at operating temperature
• According to the maintenance interval
In cold weather the indicator light can illuminate 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
Proceed as follows:
Stop the engine
1
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 reservoir
2
Open the cover completely and remove it
Pull filler pipe 2 upward with a slightly turning movement, together with filter element 3
Remove the filter element from the filler pipe and dispose of it
3
Slide the filler pipe onto the new filter element and insert it in the filter
Tighten the cover by hand
Maintenance
5-23
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