Abstract: A tie rod extendable and retractable telescopic axle assembly wherein a pair of axle beams are slidably mounted in a box beam integral with a vehicle chassis. Steering linkage and associated wheel assemblies are mounted on the outer ends of the axle beams, and the inner ends of the axle beam within the box beam are telescopically mounted relative to each other which provides an increased wheel base when the axle beam are moved outwardly of the box beam. A hydraulic cylinder and piston rod assembly is mounted between the box beam and wheel assemblies so that the hydraulic cylinder and rod assembly function not only as an actuator for extending and retracting the axle beams but also as a tie rod for the wheel assemblies.

Abstract: To guide and restrain essential hoses and cables of telescoping boom machines, a carrier track system for the hoses and cables is provided in which all parts of the flexible carrier track are supported during extension and retraction of the telescoping boom. The system includes a stiff leg attached to the forward end of the boom fly section and extending rearwardly thereof and engaging a guiding and restraining device on the forward end of a carrier track bridge attached to the forward end of the boom mid-section and extending rearwardly thereof and engaging a restraining and guiding device on the forward end of the boom base section. The rear of the bridge carries a guide roller assembly which engages the bight portion of the flexible carrier track which is connected between the stiff leg and the forward end of the boom base section. Spaced support rollers on the top of the bridge engage and support the stiff leg and the top stretch of the flexible carrier track along its entire length.