文档介绍：Suspension and Steering, Page 1 of 4
Links to topics on page 1
Types of front suspensions
Links to topics on page 2
Spring types
Manual steering
Power steering
Links to topics on page 3
Steering geometry
Rear suspensions
Links to topics on page 4
Steering and suspension maintenance
Special section: Suspension and steering system maintenance intervals
Steering system service
Special section: Troubleshooting basic steering and suspension problems
Types of front suspensions
See Figures 1 thru 7
The mon front suspensions used on vehicles today are the independent (2 unequal length control arms) and McPherson strut suspension systems (used on front wheel drive and some rear wheel drive vehicles).
Figure 1 The two mon front suspension types used on vehicles today.
Figure 2 On this design, the coil spring is mounted on top of the upper control arm with the shock absorber in the center of the coil spring. Only the upper control arm is of the A-arm design.
Figure 3 Typical unequal length A-arm suspension used on rear-wheel drive sedans. In this design, the shock absorber and coil spring are positioned between the upper and lower control arms. Note that the control arms (A-arms) are not the same length.
Figure 4 This independent front truck suspension is very similar to the unequal length A-arm suspension used on rear-wheel drive sedans. It functions in the same manner, but ponents are of a heavier duty construction to handle the added stress.
Figure 5 This straight I-beam front suspension, used mostly in heavy-duty trucks, is plicated and meant to handle heavy loads, rather than give fortable ride.
Figure 6 This four-wheel-drive suspension is basically the same as an I-beam suspension, except that a front drive axle takes the place of the I-beam.
Figure 7 The twin I-beam front suspension is used almost exclusively by Ford trucks. The coil spring is mounted between the frame and an I-beam that carries each wheel. The I-beam is pivote