Lukas LSI 55 - Manual (Page 17)

17
bolt
central bolt
blade arm
retaining ring
sliding plate
self-locking nut
12.2.3 Function and load test
If there are doubts about the safety and reliability, an additional function and load
test must be carried out. For that purpose LUKAS offers a test equipment.
12.2.4 Changing the hydraulic oil
- Change the hydraulic oil after approx. 500 operating hours, but after 2 yeas at latest;
- Whenever the oil of the appropriated pump (motor / hand pump) is changed. Mixing
the cutters used oil with fresh oil must be avoided because of impurity.
Procedure
The cutter is in closed (retracted) position • Change oil of the pump. Unscrew return hose
on the pump:
- for hose connection: unscrew the connector from the blue return line;
- for quick couplings: Fully release the union nut on the plug-in coupling of the blue
return line.
Slowly extend the device with the pump. Collect the old oil from the annulus side in a
separate container and dispose it like the old oil from the pump • Actuate the pump no
longer.
Reconnect the return hose to the pump:
- Tighten the union nut on the plug-in coupling according to 12.3.6,
- Tighten hose nipple in the valve block with M
A
= 45 Nm,
- Ventilate device according to 8.1
12.3 Repairs
12.3.1 Blades / blade arm and levers
Blades / blade arm and levers must be replaced if there are breakages and cracks or
if the blades are no longer in order as a result of multiple regrinding of the cutting edges
(12.2.1).
- Unscrew the nut from the central bolt
(wrench size of the jaw wrench see chapter
"Technical data") and remove the central bolt,
- Remove the retaining ring with retaining ring
nipper,
- Replace the blades and sliding plates,
- Insert bolts with retaining rings,
- Tighten the nut on the central bolt with torque
according to chapter „Technical data“.
Note: The bolts are accessible, when the blades are closed.
Attention:
Thoroughly clean all sliding surfaces before assembly and grease with LUKAS special
grease.