Lukas LH2 - Manual (Page 33)

33
11.5.5 Replacing pressure limiting valves and filter
The pressure limiting valves have to be replaced, when they are damaged. The filter has
to be replaced, when the flow of the hydraulic fluid is not possible or it is only possible with
difficulties.
ATTENTION!
Pressure limiting valves must not be disassembled or readjusted; they have to
be replaced by new ones with appropriate settings!
Procedure:
1. Disassemble reservoir, like described in chapter “Removing tank for cleaning, replacing
the tank or the seals”.
2. Demount the pressure limiting valve HP (Pos. 11.1/12.1), the pressure limiting valve LP
(Pos. 13.1) and the sealing rings (Pos. 11.2) below. When replacing the filter, demount
filter (Pos. 14).
13.1
11.1/12.1
11.2
11.2
14
high pressure port
low pressure port
3. The assembly is done in reverse order. Replace all damaged parts with new ones. The
tightening torque of the pressure limiting valves are 50 Nm.