3.3.1. Features of the device

Fig. 3.20. Drive of a forward wheel: 1 – case of the external hinge; 2 – lock ring; 3 – holder; 4 – ball; 5 – external collar; 6 – separator; 7 – persistent ring; 8 – protective cover; 9 – internal collar; 10 – wheel drive shaft; 11 – clamp of the internal hinge; 12 – case of the internal hinge; 13 – lock ring of the case of the internal hinge; And — the control size

The drive of each wheel consists of two hinges of equal angular speeds and a shaft of 10 (fig. 3.20) which at the drive of the left wheel is executed from a bar, and at right — of a pipe.
The external hinge consists of the case 1, a separator 6, an internal holder of 3 and six balls. In the case of the hinge and in a holder flutes for placement of balls are executed. Flutes in the longitudinal plane are executed on radius that provides an angle of rotation of the external hinge to 42 °. The tip of the case of the hinge is established by Shlitseva in a nave of a forward wheel and fastens to it a nut.
The holder 3 hinges is established on vents of a shaft 10 between a persistent ring 7 and a lock ring 2.
The internal hinge differs from external in the fact that paths of the case and a holder are executed direct, but not radial that allows details of the hinge to move in the longitudinal direction. It is necessary for compensation of the movements caused by fluctuations of a forward suspension bracket and the power unit.
At assembly of the internal hinge the selective method is used. In external and in internal hinges balls of one sorting group are established. Replacement of any one detail is inadmissible — hinges are replaced assembled.
Details of hinges are greased with SHRUS-4 lubricant which is put in cases of hinges at assembly. Sealing of hinges is provided with protective covers which fasten collars.

Possible malfunctions, their reasons and methods of elimination
Cause of defect
Elimination method
Noise, knock from a forward wheel at the movement of the car
1. Wear of details of hinges
1. Replace the worn-out or damaged hinges
2. Deformation of shaft of the drive of wheels
2. Replace shaft
       Lubricant leak
Damage or rupture of a protective cover of internal or external hinges
Replace lubricant in the hinge and a protective cover