Fda Drive; Cardan Drive - Belarus 80.1 Operation Manual

3.10.3 FDA drive

3.10.3.1 Cardan drive

The cardan drive is designed to transmit torque from the transfer box to the front
drive axle.
The cardan drive consists of two cardan shafts (intermediate and front) identical in
design and length and an intermediate bearing.
The cardan shaft consists of tube 12 (figure 3.10.8) and two joints with cross pieces
17 on needle bearings 13. Cages of the needle bearings are locked with lock rings 15,
trunnions of the cross pieces are provided with end seals 16 and self-moveable gaskets
14. The cardan shafts are secured by flanges 18 to flanges of the transfer box, intermedi-
ate bearing 1, 10 and the front drive axle main pair of gears.
The cardan shaft assembly is dynamically balanced.
The intermediate bearing consists of adjustable multi-disc safety friction coupling
and bearing unit, located in housing 7, which is mounted on pins and is secured by bolts to
the coupling clutch casing from below.
Torque from the intermediate shaft is transferred to flange 10, which is connected
by splines to shaft 24. Pressure discs 20 and drive discs 21 are mounted on shaft 24 and
transmit rotation to bushing 5 through driven discs 22. Flange 1, connected by splines to
bushing 5, transmits torque through the front cardan shaft to the front drive axle. Com-
pression of drive 21 and driven 22 discs is carried out through pressure discs 20 by the
force of plate springs 8. The coupling is adjusted to transmit a certain amount of torque by
nut 11.
1 – flange; 2 – sealing ring; 3 – gasket body; 4 – gasket;
ing; 7 – housing of intermediate bearing; 8 – plate springs; 9 – washer; 10 – flange;
11 – nut; 12 – tube of cardan shaft; 13 – needle bearing; 14 – gasket; 15 – lock ring;
16 – end seal;
disc; 21 – drive disc; 22 – driven disc; 23 – bushing; 24 – shaft.
Figure 3.10.8 Cardan drive of the front drive axle with intermediate bearing
17 – cross piece; 18 – flange of cardan shaft; 19 - liner; 20 – pressure
149
80-0000010B OM
5 – bushing; 6 - bear-