THEORY OF OPERATION - (CONTINUED)
The dash panel is a NEMA 4, rain tight enclosure with automotive type instrumentation. Indicator lights are
provided to give visual status of various operations and functions.
A Holland PH-30SA41 hitch with swivel w/spring cushion is mounted at the front and rear of the vehicle. Drawbar
eye dimensions are 2" to 3" ID w/1.25" to 1.63" Ø section with a drawbar pull of 8000 lb.
The power steering system (Figure 1) uses a gear pump to move hydraulic luid from the hydraulic tank to the
steering components as needed. The system uses a hydraulically assisted orbital valve to direct pressure to a
single steering cylinder mounted on front axle to pivot the wheel hubs. Steering linkage connects to the left side
of the ITL Model SD40 front steer axle.