Claas LEXION 480, Repair Manual

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9.5.22
RHB LEXION 480 - 188 678.1
Hydraulic cylinders – High-pressure hydraulic circuit
Assembling the concave adjustment hydraulic
cylinder
1. Slide the stop ring (10) on the ram rod (11) and
secure with the expansion pins (8 and 9).
2. Heat both seals (2) in hot water and then fit on the
ram (3). Insert the two valves (5) with the cylinder
pin (6) and the compression spring (7) into the
ram (3).
3. Secure the ram (3) on the ram rod (11) with
liquid locking compound, e.g. DELO-ML 5328,
part no. 201 802.0.
Tightening torque = 50 Nm
4. Insert seal (16) and the scraper ring (17) into the
cylinder head (15).
5. From serial no. …:
Insert a dual seal ring into the ring groove of the
cylinder head (15).
Up to serial no. …:
Insert the oiled O-ring (12) and the back-up ring
(13) into the groove of the cylinder head (15).
6. Insert the complete cylinder head (12 to 17) on
the ram rod and then slide it into the cylinder
barrel (1).
7. Twist the complete cylinder head (12 to 17) so that
the hole in the cylinder head groove lines up with
the slot in the cylinder barrel.
Hang in the greased securing wire (14) with its
hook in the cylinder head bore and turn the
cylinder head. The securing wire is pulled into the
groove.
For every assembly of the cylinder, use a new
securing wire.
8. Screw the hex. nut (18) and the eye section (19)
on the ram rod (11).
Adjust the retracted cylinder to the basic settings,
which is (L1) =
370 mm , by adjusting on the eye
section and lock this setting.
(Fig. 54)
Hydraulic cylinders – High-pressure hydraulic circuit