Castloc II and Simplex Series

Use a chassis or multipurpose grease to lubricate the two grease fittings located on either side of the fifth wheel top plate. Lubricate the two grease fittings located in the grease grooves on the fifth wheel top plate. Lubricate the two grease fittings located below the top plate mounting pins. Lubricate the lock mechanism.

Once the fifth wheel's moving parts are lubricated, apply a heavy coat of grease to the top plate, either through the grease fittings located on the underside of the top plate, or by direct application. On slide-mount applications, lubricate the slider lock pockets and the slider bracket.