Claas LEXION, Руководство по ремонту

Страница: 19 / 31

299 211.0 - RHB klappbares SW 4,50 m - 5,40 m LEXION
1.3.3
General repair information
Pre-assembly:
1. Cut off the tube at right angles. Do not use a
pipe cutter because this will slant the tube wall,
causing heavy inside and outside burrs. Slightly
deburr the tube end on the inside and outside
(do not chamfer!) and clean it. In case of tube
bends, the straight tube end up to where the
bending radius starts must be at least twice the
height of the union nut.
2. Push the union nut and the progressive ring on
the tube.
3. Push the tube against the stop in the union and
tighten union nut until the progressive ring grips
the tube (the tube must not rotate with the nut).
This point can be felt because increase power
is needed from here.
4. Tighten the union nut half a turn beyond the
point where resistance is felt.
5. Check the cut made by the progressive ring edge:
A visible shoulder must fill the space before the
progressive ring front end. The progressive ring
may rotate, but axial displacement must not be
possible.
Installation:
Insert the pre-assembled tube into the well-oiled
threaded joint, tighten the union nut up to the point
where resistance is felt and then half a turn beyond
this point.
Important: Back up the threaded joint with a
wrench!
Re-installation:
Every time the progressive ring fitting has been
loosened, retighten the union nut until resistance is felt
and then continue for half a turn beyond that point.
Important: Back up the threaded joint with a
wrench!
Progressive ring fitting leaks:
If a progressive ring fitting leaks, first loosen the
union nut until some oil escapes and then tighten it
as specified.
ATTENTION!
Failure to observe the tightening torques
reduces the nominal power and the service
life of the fitting, resulting in leaks and in the
tube slipping out.
Taper fittings on hydraulic lines
Installation:
Apply oil to the O-ring on the taper. Tighten the union
nut a third of a turn beyond the point where resistance
is felt.
Important: Back up the threaded joint with a
wrench!
ATTENTION!
Failure to observe the tightening torques
reduces the nominal power and the service
life of the fitting, resulting in leaks and in the
tube slipping out.
Welding
ATTENTION!
When carrying out electric welding work on
the machine, observe the following points:
1. Turn off the battery isolating switch!
2. Disconnect the connector to the display monitor.
The connector is located in the central terminal
compartment next to the plug-in module (11 –
Automatic reel control).
3. Pull out the electrical plug-in modules in the
central terminal compartment.
4. Disconnect the electrical connectors between the
engine and the main wiring loom.
5. Always connect the earth clamp of the welder in
the near vicinity of the area where the welding is
being carried out.
Some advice for speedy and correct repair
work:
– Mark machine parts prior to disassembly to
ensure their correct left-to-right positions and
balance when reassembled.
– Fit expansion pins with the slot facing the side
under load. When fitted with a quarter turn from
this position, they will get loose, fall out or shear
off.
– Replace cotter pins, locking wires, locking plates,
tab washers and lock washers when carrying out
repairs.
– Fit lubricated ball and slide bearings with high-
quality grease.