Spring leaves are lubricated at the time of manufacturing and require no further lubrication unless the spring is disassembled. Radius leaf bushings that are rubber mounted do not require lubrication.

Keep the U-bolts tight at all times in order to hold the axle in place at the spring. If the U-bolts are not tight, the axle may shift, causing misalignment and spring leaf malfunction at the spring center bolt. Refer to Fasteners in General Information for tightening intervals.

The spring center bolt holds the spring together while in shipment and during installation. The center bolt is also a locating point when assembling the spring to the axle. After assembly, the U-bolts hold the spring and the axle in alignment.