V. Orlandi UN 76 Bedienungsanleitung Und Wartungsanleitung Seite 42

Now proceed with installing the hook coupling to the chassis drawbeam:
1)
Fit the coupling flange (6) in to the central hole of the chassis drawbeam from
the inner side;
For hook couplings UN766 fit the reinforcement plate (8) from the rear side
of the chassis drawbeam (on to the protruding part of the coupling flange)
and fix it with the four bolts (10). Tighten the bolts as follows:
Coupling type
UN 763
UN 764
UN 766
ATTENTION: Use only self-locking nuts
2)
Insert the tie rod (3) with the rubber buffer (4b) and the front flange (5b) through
the coupling flange (6a) which is already bolted on the drawbeam;
For hook couplings UN763 and UN764 install the second rear flange (5a).
3)
Insert the rubber buffer (4a) and the
rear flange (2);
4)
Lubricate the threads of the tie rod (3),
tighten the castellated nut (1) by
hand in the first instance taking care
to ensure the coupling is level
horizontally;
HOOK COUPLING UN 76
INSTALLATION, OPERATING AND MAINTENANCE INSTRUCTIONS INSTALLATION, OPERATING AND MAINTENANCE INSTRUCTIONS
Bolt size
M 14
M 16
M 20
Bolt strength
10,9
10,9
8,8
°
9 0
PAG.
10/32
CHAP . 2
REV. 00
Torque (M)
110 -130 Nm
170 - 200 Nm
330 - 370 Nm
°
9 0