Fig. 8.30. Backing shaft: 1 – coupling case; 2 – roller needle bearing; 3 – backing gear wheel; 4 – lock ring; 5 – backing gear wheel; 6 – backing shaft; 7 – roller needle bearing; 8 – holder of a shaft; 9 – washer

Fig. 8.31. Holder of a shaft of a backing

Check a condition of both roller needle bearings. Replace them at wear or damage. Press the bearing from a case of coupling a stripper. Press the bearing by means of the corresponding mandrel. Check a condition of a shaft and gear wheels. At wear or damage replace them. At installation of gear wheels achieve their correct orientation. The shaft (fig. 8.30) of a backing is removed together with two shaft of the transmission. At assembly of the transmission replace bolts of fastening of the holder of a shaft (rice 8.31)