(1) Steering knuckle
Both steering knuckles are fitted between the upper and the lower axle body through
two king pins, tapered bearing, dust cover and O-ring. The king pin is locked on the
steering axle body with upper being with backing pin and lower being with cotter pin. Both
ends of the king pin are supported by tapered bearing which are pressed into the axle
body. See Fig. 3-4.
1. Thrust bearing
2. Knuckle
3. Lock pin
4. Shim
5. King pin
6. Needle bearing
7. Bushing
8. Support seat
Fig. 3-4 Knuckle
(2) Steering cylinder
The steering cylinder is of double-action piston type. Both end of the piston rod are
connected with steering knuckles through connection rod. Left or right steering of the
truck is achieved with the help of the left or right travel of the piston rod driven by the
pressure oil from the powered steering unit. The piston seal adopts combination seal of
support ring and O-ring. The Yx-ring seal is adopted on cylinder cap and piston rod. The
cylinder is fixed on the steering axle through cylinder caps of both sides. See Fig. 3-5.
Fig. 3-5 Steering cylinder
1. Thrust bearing
2. Cylinder cover
3. Cylinder body
4. O-ring
5. Support ring
6. Sleeve
7. O-ring
8. Sleeve
9. Yx-ring
10. Gasket
11. Dust-ring
12. Bushing
13. Clip ring
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