8.1 Maintenance plan
Failure of hydraulic systems
Hydraulic system failures are often caused by an incorrect choice of hydraulic uid or excessive
solid contamination in the hydraulic uid. High solid contamination is due to lack of maintenance
of the hydraulic system.
Select hydraulic uid according to specifications.
Carry out the activities described in this section carefully and in due time.
Interval
Activities to be performed
after x days
as
required
in the event
of malfunction
Mechanics and hydraulics
Visual check for external leakage
30
Venting the hydraulic system
✓
Checking the hydraulic uid level
90
Replacing the hydraulic uid
✓
Replacing 2/2-directional seated valve SP3
✓
Electrics
Checking electrical contacts
(AMP Superseal 1.5 series)
7
Checking cables for damage
365
8.2 Service
8.2.1 Checking for leakage in the hydraulic system
Maintenance interval
Monthly
Aids, tools, materials
■
Clean, lint-free cloth
1. Perform the following in sequence to determine if there are any leaks:
Apply pressure to the hydraulic system
Remove any component coverings which would hinder the check
2. If leakage is discovered:
Remove hydraulic uid with a clean, lint-free cloth
After 5 minutes, check the leak again to see if hydraulic uid has escaped.
If hydraulic uid has escaped again, re-tighten the hydraulic connections.
If re-tightening the hydraulic connections does not prevent hydraulic uid from escaping, the
hydraulic power pack must be replaced.
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B 6025 - 12-2021 - 1.1en
HAWE Hydraulik SE
