Abstract: A work machine includes a machine body. The work machine also includes an undercarriage assembly having a frame assembly which supports the machine body. The frame assembly has (i) a first frame member, (ii) a second frame member which is movable relative to the first frame member, and (iii) a fluid cylinder for moving the first frame member relative to the second frame member. The work machine further includes a sensor for sensing position of the first frame member relative to the second frame member. Moreover, the work machine includes a controller which is electrically coupled to the sensor. The controller is configured to (i) communicate with the sensor so as to determine the position of the first frame member relative to the second frame member, and (ii) operate the fluid cylinder so as to move the first frame member relative to the second frame member based on the position of the first frame member relative to the second frame member. A method of tensioning a drive track chain is also disclosed.

Abstract: A method of controlling a fuel injector assembly of an internal combustion engine includes the stop of generating a first injection pulse with an engine control module. The method also includes the step of injecting fuel into a cylinder of the engine in response to generation of the first injection pulse. The method further includes the step of detecting when fuel is injected into the cylinder and generating a control signal in response thereto. Moreover, the method includes the step of determining a time period between generation of the first injection pulse and generation of the control signal. The method also includes the step of adjusting initiation of a second injection pulse based on the time period. An apparatus for controlling a fuel injector assembly of an internal combustion engine is also disclosed.