Sliding Yoke — Leyland Dost — Description
The sliding yoke (also called a slip yoke) in the Ashok Leyland Dost driveline is a propeller shaft component that allows the propeller (drive) shaft to adjust its length while transmitting power from the transmission output to the rear axle/differential.
Key Points:
A sliding yoke is a splined yoke that slides in and out on the splined end of the transmission or companion shaft. This telescoping action compensates for changes in the distance between the transmission and the rear axle as the vehicle’s suspension moves during driving.
By allowing this length variation, the sliding yoke helps prevent binding, reduce stress on the driveline, and maintain smooth torque transmission even as the vehicle travels over uneven surfaces.
It is made of high‑strength forged steel to handle rotational loads and torque typical of light commercial vehicles like the Dost.
How It Works:
The yoke has internal splines that match the external splines on the transmission output or a companion shaft.
As the suspension moves, the propeller shaft length varies; the sliding yoke moves along the splines to absorb this change without interrupting power delivery.
This sliding action decreases wear on other drivetrain components and improves overall driveline durability and comfort.