Lukas P 640 TG - Manual (Page 42)

42
Trouble Cause Solution
Fluid leaks from the
hydraulic fluid reservoir
(especially from the filler
screw)
Return of the hydraulic
fluid from the rescue
device exceeds the
reservoir’s maximum
quantity when filled.
Reduce the level in the
hydraulic fluid reservoir to
the mark on the dipstick or
inspection glass
Defective seal Have repaired by
authorised dealer or
directly by LUKAS
Leaking fluid between
engine and flange bearing
Radial shaft seal on the
drive shaft is defective
Have repaired by
authorised dealer or
directly by LUKAS
Hydraulic fluid milky and
cloudy
Water / condensation in
the system
Immediately replace
hydraulic fluid
With mono-coupling-
system: hose assembly
cannot be coupled
Pressure too high (e.g.
caused by excessive
ambient temperature)
Switch valve block to
circulation at static
pressure
For the ISV valve: Have
repaired by authorised
dealer or directly by
LUKAS
Coupling defective Coupling needs to be
replaced immediately
With mono-coupling-
system: It is frequently not
possible to couple hose
assemblies
Hydraulic fluid not adapted
to the application situation
Hydraulic fluid must be
replaced (see chapter
“Recommended hydraulic
fluids”)
Coupling defective Coupling needs to be
replaced immediately
With quick-disconnect
coupling system: hose
assembly cannot be
coupled
Pressurised Switch valve block to
circulation at static
pressure
For the ISV valve: Have
repaired by authorised
dealer or directly by
LUKAS
Coupling defective Coupling needs to be
replaced immediately
With mono-coupling-
system: Leak in the
couplings
Coupling defective Coupling needs to be
replaced immediately