bulldozers have been overloaded under severe working conditions for a long time. Transmissions and bulldozers often collide with hard objects on the ground, resulting in strong frictional vibration and distortion, which promotes early fatigue of equipment components and reduces overload capacity and tensile strength. The final drive box is faulty or the gear is broken. The following is the part number and structure diagram of the final drive box and gear of Shantui SD22 bulldozer.

1Left final drive box: 154-27-11113, right final drive box: 154-27-11123

2 Gasket: 154-27-11130

3 Cylindrical pin: 04020-01842

4 screw plug: 07049-02025

5 bolts: 01010-52050

6 Spring washer: 01602-22060

7 boards: 154-27-11410

8 lock pieces: 175-27-31540

9 bolts: 01010-51220

10 Guard plate (left): 154-27-15110, guard plate (right): 154-27-15120

11 bolts: 01010-52045

12 Washer: 01605-12040

13 Gear hub: 154-27-12122, gear hub: 158-18-00002

14 big gear (second level): 154-27-12110

15 bolts with reamed holes: 75-27-12181

16 lock pieces: 175-27-12190

17 Nut: 01582-12419

18 Cylindrical roller bearings: 150-09-13110

19 Elastic retaining ring: 04071-00250

20 double row cylindrical roller bearings: 170-09-13250

21 retaining ring: 154-27-12560

22 lock pad: 170-27-12210

23 bolts: 01010-51440

24 covers: 154-27-12152

25 covers: 154-27-12162

26O ring: 07000-05410

27 bolts: 01010-51230

28 Spring washer: 01602-21236, floating seal assembly: 170-27-00021

29 sealing ring assembly (composed of 2 sealing rings): 170-27-12513

300-ring assembly (composed of 2 O-rings): 170-27-12520

31 extension set: 158-18-01000

32O ring: 07000-05410

33 Washer: 01602-21236

34 bolts: 01010-51230