Figure 8-11. - Leaf springs.

Figure 8-12. - Multileaf spring.

through the bushings may be plain or threaded. Threaded bushings and pins offer a greater bearing surface and are equipped with lubrication fittings.

Leaf springs are used on the front and rear of heavy-duty trucks and the rear of passenger vehicles and light trucks. Trucks that carry a wide variety of loads use an auxiliary or overload spring. This auxiliary spring (fig. 8-13) may be mounted on top of the rear springs and clamped together with long U-bolts, or it may be located under the axle separate