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. The bearing from a case of coupling press a stripper. Press the bearing by means of the corresponding opravka. 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 acts in film together with two shaft of a transmission. At assembly of a transmission replace bolts of fastening of the holder of a shaft (rice 8.31)