V. OPERATING INFORMATION

Hydraulic System

The auxiliary hydraulic system is an open type directly mounted behind the heavy duty variable displacement pump. This system consists of dual gear pumps that supply the required hydraulics to operate the full time power steering unit, lift cylinders, and various cutters or pullers.

After supplying each of these systems, the hydraulic oil is sent to the oil cooler in front of the engine coolant radiator. Here it is cooled and then sent back to the hydraulic oil reservoir.

The front, larger gear pump (fig. 5.20, item 1) supplies only the cutters or pullers. The rear, smaller gear pump (fig. 5.20, item 2) supplies power steering and the lift cylinders.

NOTE:

Immediately shut down engine if low level hydraulic oil light comes on (fig. 5.21).