DRIVE TRAIN GENERAL
7 - 6
Again, the charge pump flow is teed off the outlet elbow of the pressure filter and directed to the left brake pedal valve
which releases the brake cylinder in the rear main frame. For a complete description of components, refer to Section
7E.
Main pressure oil is directed out the F or R port and also out the 1 or 2 port of the transmission/steering valve. When
directed out these ports, main pressure oil is routed by hoses to the range selector valve to shift the spools. For a
complete description of these valves, refer to Section 7C. Main pressurized oil from the main pressure regulator valve
is directed to the rate of rise valve and the range selector valve. For a complete description of the rate of rise valve, refer
to Section 7C.
Converter pressurized oil from the C port of the main pressure regulator valve is directed by hose to the inlet port of the
torque converter. After pressurized oil is used for torque multiplication, it exits the torque converter at the outlet port and
is directed by hose to the inlet port of the oil cooler, which is located in the radiator bottom tank. For a more complete
description and operation of the torque converter, refer to Section 7B.
Cooled oil from the outlet port of the oil cooler is regulated by the lubrication spool in the main pressure regulator valve
and directed to the transmission for lubrication purposes. Oil from the transmission housing is scavenged by hose
through an in-line oil strainer and through the rear element of double pump. From the pump outlet, oil is delivered back
to the rear main frame.
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