3.3.3. Dismantling and assembly

Dismantling of the external hinge
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

You carry out dismantling of the hinge only in case of damage of a protective cover 8 (see fig. 3.20) when there is a need for replacement of lubricant and for assessment of a condition of details.
For dismantling of the external hinge, adaptation 67.7814.9508, remove collars 5 and 9 and shift a protective cover 8 on a wheel drive shaft (at the drive of the right wheel draw in a cover or turn out). Using a drift and the hammer, bring down the hinge from a shaft, making effort for a holder 3. It is not allowed to apply loading to a separator. Wash out the hinge.

Fig. 3.21. Details of the external hinge: 1 – hinge case; 2 – separator; 3 – holder; 4 – balls



Fig. 3.22. Extraction of balls from a separator

Before dismantling by paint or an oselok note the mutual provision of a holder of 3 (fig. 3.21), a separator 2 and cases of 1 hinge. Fix the external hinge in a vice, as shown in fig. 3.22. Incline a holder and a separator so that one ball perhaps fuller left a hinge case groove (see fig. 3.22). The screw-driver manufactured of soft material squeeze out a ball from a separator. Then turn all details so that nearby the located ball reached the same position, and take out it from a separator. Using the specified receptions, take out other balls.
The sequence of removal of balls can be also another — through a ball. Weak percussion on a separator or a holder is allowed by the subject made of soft material. The excessive effort of turn of a separator is unacceptable as blocking of balls is possible that it will complicate further dismantling.

Fig. 3.23. Extraction of a separator assembled with a holder from the hinge case

Establish a separator with a holder so that the extended separator windows (are noted by shooters in fig. 3.23) settled down against ledges of the case of the hinge and take out a separator assembled with a holder.

Fig. 3.24. Removal from a holder separator

Take out a holder from a separator for what place one of ledges of a holder in the extended window of a separator (fig. 3.24) and roll out a holder.

       NOTE
On the car the drive of wheels having in the external hinge a separator with equal windows can be installed. In this case for extraction of a separator with a holder from the case of the hinge and a holder from a separator any windows of a separator can be used.

Once again wash out details of the hinge and check a condition of all details. Cracks on separator crossing points, deep dents on holder paths, considerable teases and corrosion on working surfaces of all details are inadmissible. If it is visually difficult to determine the size of wear of details of the hinge, then it should be determined by measurement. The extreme size of wear of working surfaces of details is equal to 0,1 mm.
Assembly of the external hinge
It is carried out to the sequences, the return dismantling taking into account the following:
– before assembly grease all details with SHRUS-4 lubricant;
– at installation of a separator assembled with a holder in the case of the hinge provide coincidence of the tags put before dismantling;
– at installation of balls in a separator incline a holder approximately on a corner twice bigger, than a separator;
– fill the hinge with SHRUS-4 lubricant in number of 40 cm3;
– establish a new lock ring in a shaft flute strictly on its center, using jellied lubricant. Then rest a shaft against a holder so that coaxiality of a ring concerning a shaft and a holder remained. Sharply strike a wheel drive shaft end face; at the same time the lock ring will contract and will slip through a holder opening;
– before installation of buckles release "excess" of air from a cover, having delayed the screw-driver a landing corbel of a cover from a drive shaft;
– check whether there are no cracks in a zone of the fixing and pulling together nests of collars, their deformation and traces of a zadevaniye on collars about a paving. At their detection replace collars new.
After assembly and lubricant the hinge has to be turned smoothly, without jamming from effort of a hand.
Dismantling of the internal hinge
It is carried out in the following sequence:

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

– remove collars 5 and 9 (see fig. 3.20) and shift on a shaft a protective cover 8 (at a shaft of the right wheel draw in a cover or turn out);
– put tags of a relative positioning of the divided details;
– take out from the hinge case a clamp 11, then a shaft 10 assembled with a holder 3, a separator 6 and balls 4;
– remove with the screw-driver manufactured of soft material balls and take out a holder from a separator;
– using the above-stated receptions, separate hinge details, wash out them and attentively check a condition of all details. The hinge is subject to replacement if cracks on separator crossing points, deep dents on holder paths, considerable teases and corrosion on working surfaces are found. If visual assessment of wear of details is complicated, then measure the wear size which should not exceed 0,1 mm.
Assembly of the internal hinge
It is carried out to the sequences, the return dismantling. At the same time, before establishing a holder on shaft vents, be convinced that the ring pro-point of a holder under a persistent ring is established towards a shaft. After assembly be convinced that the holder assembled with a separator and balls freely moves on all length of grooves of the case from effort of a hand. Otherwise establish the reason of jamming and at damage of details replace the hinge assembled. Then, having convinced of the correct assembly, put in the hinge 80 of cm3 of SHRUS-4 lubricant.
Before installation of collars release "excess" of air from a cover, having delayed the screw-driver a landing corbel of a cover from a drive shaft. At the same time the hinge and a shaft have to be located coaxially and the size "A" (see fig. 3.20) has to make 210 mm. At installation of protective covers use a mandrel 67.7853.9537.