Inspection, care and maintenance
263
Hydraulics
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General
Trailers with hydraulic systems require
special maintenance.
Maintenance/repair work on
hydraulic systems may only be
performed by qualified
specialists.
Observe the national regulations, e.g.
BGR 237 on handling/maintaining/
repairing hydraulic components.
WARNING
Lines are under pressure
These are under pressure when
decoupling the hydraulic lines.
The oil can escape under high pressure
and cut people and lacerate skin.
Before doing repair work on the
hydraulics, check that the lines are
depressurised and the towing vehicle
is switched off.
Wear .
Hydraulic cylinders
Fig. 27 Checking/maintaining cylinders
1 Cylinder, vertical
2 Hoses/distribution
Check the cylinders (Fig. 27/1) for
leaks (oil loss) and tight fit.
If necessary, clean escaping oil from
the hydraulic components.
Replace defective cylinders/
distributors immediately.
Check the hoses (Fig. 27/2) for crack
formations/deformation.
Replace the hoses after about 6
years.
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