Table of Contents
Advertisement
102/128 Maintenance and repair
Measure:
Changing the filter element
of the pressure filter:
Bosch Rexroth AG, CytroBox, RE 51057-B/11.19
10.5.4 Monitoring the filter element contamination (pressure filter)
Be critical if the filter contamination sensors do not indicate any change over
multiple inspection intervals. Of course, this may always be an indicator that the
hydraulic fluid is clean. However, it may also have the following causes:
– The filter element is defective.
Plan and carry out replacement of the filter element at the end of the shift.
Shorten the intervals between the required replacement of filter elements,
identify the cause of the deposition of dirt and correct it.
Proceed as follows:
1.
Before starting to work, provide receptacles for the hydraulic fluid and the filter
element.
2.
Depressurize the hydraulic power unit and secure it against unintentional start-up.
3.
Make sure that the pressure accumulators are completely empty and the system
is depressurized.
4.
Loosen the plug screw of the pressure filter, see Fig. 8, pos. 3, on page 51,
using a hexagon wrench.
5.
Loosen the filter bowl using an open-end wrench.
6.
Pull the filter bowl down about 10 cm by hand.
7.
Then pull the filter element downwards out of the manifold block so that it lies in
the filter bowl.
8.
Remove the filter bowl together with the filter element from the hydraulic
cabinet.
9.
Replace the filter element and re-install the filter bowl in the hydraulic power unit
in reverse order.
10.
Turn the filter bowl with the open-end wrench hand-tight to the bottom and then
turn it back half a turn.
11.
Bleed the manifold block e.g. via a Minimess hose at measuring point 7.080,
see Fig. 9 on page 52, and start the drive in service mode (via the wizard or
IndraWorks DS).
12.
Check the oil level and refill appropriate hydraulic fluid, if necessary.
13.
Dispose of the filter element in accordance with national or company-specific
regulations.
Advertisement
Table of Contents
