XA-0116S
Slack Adjuster Plate, Fifth Wheel
SAF-Holland

Developed for fifth-wheel applications, the mounting plate provides a precise interface between the Slack Adjuster and the kingpin assembly. The specification includes a 3.5-inch kingpin lock size, which determines how the unit secures to typical trailer kingpins, and the plate serves as the aligned base for correct stroke and limit settings. In the VMRS framework (059-001-001), this part helps ensure stable actuation, reduces misalignment between the slack adjuster and the kingpin plane, and supports consistent engagement during braking and coupling operations. Categorized under the Fifth Wheel Related Accessories (42763), it is a targeted fit for fleets running standard 5th-wheel configurations where precise alignment and robust mounting are required. When installing, technicians should verify clearance, ensure the lock matches the kingpin diameter, and follow torque specs to avoid binding or uneven wear. The combination of dimensional accuracy and structural rigidity translates into smoother brake operation, easier maintenance, and longer service life for fifth-wheel assemblies in heavy-duty tractor-trailer configurations.