Lukas CU 4DVV - Manual (Page 18)

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7.2 Repairs
7.2.1 Coupling replacement
The couplings must be replaced if:
- there is external damage,
- the locking does not function,
- hydraulic
fl uid continues to leak in the coupled/uncoupled state.
WARNING / CAUTION / ATTENTION!
Never repair couplings: they must be replaced by genuine LUKAS parts!
During assembly tighten the coupling to a torque of M
A
= 40 Nm.
Procedure:
1. Remove the coupling.
2. Place a new coupling in position and tighten to a torque of M
A
= 40 Nm.
7.2.2 Decals
All damaged and/or illegible decals (safety notices, type plate etc.) must be replaced.
Procedure:
1. Remove damaged and/or illegible decals.
2. Clean surfaces with acetone or industrial alcohol.
3. Affi x new decals.
Take care to affi x the labels in the correct positions. If this is no longer known, you should ask
your authorised dealer or contact LUKAS directly.
ATTENTION!
Always perform the change of the hydraulic fl uid over a collection tank and
dispose of the collected fl uid in a proper manner!
ATTENTION!
The hydraulic fl uid must be completely replaced if the application conditions
(ambient temperatures) change substantially. When selecting a suitable
hydraulic fl uid, please refer to Chapter “Hydraulic fl uid recommendations” for
the relevant rerailing equipment.
7.1.3 Replacing the hydraulic fl uid
After approx. 200 deployments, but after three years at the latest, replace the hydraulic fl uid
in the entire rerailing installation.
Because of the small quantity of hydraulic fl uid in the control table, separate fl uid
replacement on the control table is not required. It is adequate to fl ush the entire
installation with the new hydraulic fl uid during fl uid replacement. However, all the valves
need to be actuated (if necessary connect the supply and return lines of each valve
in order to fl ush).