Patent ID: 8870303

Claim:
An integrated track adjustment/recoil unit for installation in a track roller frame of a track type machine, the unit comprising: a track adjust cylinder defining a bore and including a rear frame contact surface; an accumulator module received in the bore of the track adjust cylinder; the accumulator module including a gas plug and a recoil stop mounted at opposite ends of a hollow cylinder, and further including a recoil piston slidably received in the hollow cylinder; the recoil stop defining an oil passage therethrough, and including a first stop surface; the hollow cylinder including a second stop surface and a front frame contact surface; the recoil piston being trapped to move between contact with the first stop surface and the second stop surface; the hollow cylinder, the recoil piston and the gas plug define a gas volume; the track adjust cylinder, the hollow cylinder, the recoil stop and the recoil piston define an oil volume; and the recoil piston being biased toward the first stop responsive to gas pressure in the gas volume.