3-9
Operation
The transmission case includes the function of a control valve, an oil filter and a parking brake.
The oil filter is charge of filtering sucked oil by an oil pump before transmitting sucked oil to a
control valve and a torque converter.
Oil transmitted through an oil filter delivers oil pressure to the piston of the forward and reverse
clutch through the solenoid valve.
At this time, the solenoid valve is in charge of the important function of transmitting oil pressure
for forward and reverse through an electric signal by the forward and reverse selection lever of the
truck.
Oil pressure chosen for forward or reverse by the solenoid valve is transmitted to the forward
clutch through the formed oil path between transmission case or the reverse clutch through the
pipe of transmission outside.
Parking brake works by the band brake installed on parking drum which is linked to the output
shaft of the forward clutch.
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