Endless track tension system

摘要

A tension system for controlling the tension of endless track of a work machine. The track tension system comprises a hydraulic circuit for regulating hydraulic pressure in hydraulic jack 20 acting on idler 22 to tension the track. The track tension system comprises two accumulators 30, 43 each of different capacity, and are in permanent direct communication with jack 20. The smaller accumulator tensions small and high frequency undulations whilst the larger accumulator tensions large and low frequency undulations.