12
1.1.3 Drive axle
The drive axle consists of axle shell,wheel hub and arrester. It is installed in the front of
framework
The shell is unit casted in construction,the tyres are fastened on wheel hub with studs and
nuts,wheel hub is supported on axle shell by conical roller bearing,power is delivered by
differential to differential axle by differential,wheel hub which drives front wheel to rotate is drived
by differential axle.Differential shaft only bears the twisted moment delivered to wheel hub.There
are seals inside left wheel hub to prevent water and dust or oil leakage installed in wheel hub.
see figure 2-3
1. Half shaft bolt
2. left half axle
3. gland
5. lockwasher 80
6. Bridge housing assembly
7. breather plug
4. nut M80X2
8. stop up
9. Right half axis
10. Right brake assembly
11. hub nut
12. Bolted post
13. nut M20X1.5
14. gasket
15. grease seal
16. bearing
17. wheel boss
18. bearing
19. oil seal collar
20. oil seal
21. brake drum
22. Left brake assembly
23. Brake hexagonal bolt
24. Brake hexagonal bolt
Figure 2-3 Drive axle
1.1.4 Installation of wheel hub
(1) Fill the wheel hub with 100ml grease,and then fix it on the axle.see figure 2-4.
(2) Screw up adjust nuts with 9.8N.m of twist moment,then reverse them 1/2 coil
(3) Hang the weighter on the bolt to measure the starting moment of the wheel hub,when it
reachs the defined value,start to screw up the nut.
starting moment:
：
49N·m
－
147N·m
。
（
figure 2-5
）
