Automatic transmission-14
The main box includes:
BIR blow-off valve
1. Valve
Figure 3.7 shows the valve unit in the view of transmission fluid tank. Figure 3.8 illustrates the pump cover.
2. Manual-operated valve
The manual-operated valve (refer to Figure 3.9) is connected to the car gear selection mechanism. It controls the transmission
fluid flow to the forward or reverse loop. Except in manual 1st-Gear position, the function of manual-operated valve is same
in all forward gear. In manual 1st-Gear, the transmission fluid will enter into the shift valve 1
2 to make the rear brake belt
and C4 overspeed gear clutch is engaged respectively.
The hydraulic control system is located in the valve, pump and main box.
The valve includes the following types:
Manual-operated valve
Three shift valves
sequence valve
electromagnetic pressure control valve
line pressure control valve
clutch connection regulating valve
brake belt connection regulating valve
solenoid valve 1 to solenoid valve 6
reverse lock valve
The pump includes the following types:
primary regulating valve (control line pressure)
torque converter clutch regulating valve
torque converter clutch control valve
solenoid valve 7
Hydraulic control system
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