You carry out dismantling of a main shaft in the following order:

Fig. 8.15. Shaft and gear wheels of the five-speed transmission: 1 – coupling case; 2 – adjusting washer; 3 – conic bearing (small); 4 – secondary shaft; 5 – conic bearing (big); 6 – washer of round section; 7 – bearing support; 8, 22, 33, 46, 60 – a persistent washer; 9 – gear wheel of the 1st transfer; 10 – needle bearing (38х43х25); 11 – synchronizer ring; 12, 14 – a spring; 13 – synchronizer; 15, 29 – a cracker; 16 – lock ring of the needle bearing; 18 – synchronizer ring; 19 – external ring of the synchronizer; 20 – internal ring of the synchronizer; 21 – gear wheel of the 2nd transfer; 23 – needle bearing (30,6х40х26,8); 24 – gear wheel of the 3rd transfer; 25 – synchronization ring; 26, 28 – a spring; 27 – synchronizer; 30 – needle bearing; 31 – synchronizer ring; 32 – gear wheel of the 4th transfer; 34 – plug (29х46х18,1); 35 – gear wheel of the 5th transfer; 36 – plug; 37, 54 – M8x26 bolt; 38 – transmission case; 39 – roller bearing (22х45х16,6); 40 – main shaft; 41 – gear wheel of the 1st transfer; 42 – lock ring; 43 – gear wheel of the 4th transfer; 44 – roller bearing (30х68,2х17,2); 45 – adjusting ring; 47 – needle bearing (29х40х24); 48 – gear wheel of the 5th transfer; 49 – synchronizer ring; 50 – spring; 51 – synchronizer nave; 52 – the sliding synchronizer coupling; 55 – plug (15х21х18); 56 – intermediate gear wheel; 57 – lock ring; 58 – backing gear wheel; 59 – backing gear wheel shaft; 61 – plug; 62 – holder of a shaft of a backing; 63 – screw of longitudinal fastening of the holder; 64 – screw of cross fastening of the holder

stripper remove from a main shaft 40 (see fig. 8.15 ) an internal ring of the roller bearing;

remove a stripper from a main shaft a persistent washer, the bearing and a gear wheel of the 4th transfer;

remove a spring lock ring from a flute of a shaft and a gear wheel of the 3rd transfer.

You carry out an inspection as follows:

carefully clear all details of a main shaft and check their state;

Fig. 8.14. Fastening of gear wheels of the 5th transfer on transmission shaft: 1 – bolt; 2 – spring washer; 3 – the conducted gear wheel of the 5th transfer; 4 – synchronizer nave; 5 – synchronizer ring; 6 – leading gear wheel of the 5th transfer

Fig. 8.16. Check of a gap "and" between a ring of the synchronizer and a gear wheel of the 5th transfer

check a condition of a ring of the synchronizer of the 5th transfer (fig. 8.14) , having installed it in the sliding coupling and, pressing towards a gear wheel of the 5th transfer. Measure by an edge of the probe a gap between an internal end face of a ring and a gear wheel which has to be no more than 0,5 mm (fig. 8.16) .

You carry out assembly of a main shaft in the following order:

at assembly of a main shaft oil each established detail;

Fig. 8.17. Installation of a gear wheel of the 3rd transfer on a main shaft

fix a main shaft in a vice with slips from soft material and, using a tubular mandrel, establish a gear wheel of the 3rd transfer on a shaft (the fillet on a gear wheel has to be directed to a gear wheel of the 4th transfer ( fig. 8.17 .);

record a gear wheel of the 3rd transfer by a lock ring;

press a gear wheel of the 4th transfer on a main shaft (the fillet on a gear wheel has to be directed to a gear wheel of the 4th transfer);

Fig. 8.18. Installation of the bearing on a main shaft

using a tubular mandrel, install the conic bearing (fig. 8.18) on a shaft ;

establish a persistent washer on a main shaft;

Fig. 8.19. A plug press fitting on a main shaft

install the plug on a main shaft and its napressuyta into place by means of a tubular mandrel (fig. 8.19) ;

Fig. 8.20. Installation of the conic bearing on a main shaft from coupling installation

using a tubular mandrel, a napressuyta the conic bearing on a main shaft from a case of coupling (fig. 8.20) ;

press an external ring of a conic roller bearing in a transmission case without compensation washers;

establish a main shaft in a case;

collect a case of the transmission and tighten bolts the required moment.