Lukas LSI Series Cutter - Manual (Page 14)

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Procedure:
The cutter tool is in closed (retracted) position • Change of oil has to be effected at the
pump.
Screw off the return hose at the pump:
- in case of hose connection: screw off the connecting piece of the blue return
hose.
- in case of quick connect couplings: screw off totally the coupling nut of the
quick
connect coupling of the blue return hose.
Extend pump with tool slowly • Collect the used oil at the piston rod side in a separate
tank and dispose of the used oil (as the used oil of the pump) • Do not operate the
pump any longer.
Connect the return hose again to the pump:
- Tighten the coupling nut of the quick connect coupling according to 13.3.6,
- Screw the hose nipple into the valve bloc with MA = 45 Nm,
- Ventilate the tool according to 9.1.1.
13.3 Repairs
13.3.1 Cutter blades and levers
Cutter blades and levers have to be replaced in the case of visual heavy damge and cracks
or when the blades are becoming too weak due to frequent regrinding. (13.2.1).
- Unscrew the nut of the central bolt (size open-jawed
spanner see 15.2) and drive out the central bolt.
- Remove the retaining rings with a pair of Seeger ring
pliers.
- Replace the blade arms after thorough cleaning and
greasing of the sliding surfaces.
- Tighten the nut of the central bolt with the tightening
torque specifi ed in 15.2.
- Note:
The bolts are accessible with the blade arms closed.
Attention: prior to mounting all sliding surfaces have to be carefully cleaned and greased
with LUKAS special grease.
Remark: Faulty parts such as blades, bolts or sliding disks have to be changed pairwise.
The levers have to be replaced if e.g. during change of blades damages appear such
as wear on the surface, cracks or deformation of the bores. Lever exchange should be
made by a authorized LUKAS dealer or the LUKAS service department.
13.3.2 Oil spill out of the control valve handle (see cover page item 10)
Pressure or return hose are not tightened properly.
Procedure:
Loosen the 2 allen screws (SW5) inside the handle sleeve and remove them together
with the short plastic isolation sleeves. Pull handle sleeve backwards until the hose
connection points become visible and retighten the retaining nut. Change hose con-
nection sealing rings if necessary. Place handle sleeve again and tighten it with the 2
allen screws. Make sure that the plastic isolation sleeves are placed properly on the
allen screws before mounting.
13.3.3 Change of protection boot
The rubber protection boot shall protect the operator against injuries caused by the