Chrysler 300/300 Touring/300C, Dodge Magnum. Manual — part 1938
Second Gear Engaged
After the gearchange is complete, the pressure on the end face of the command valve (5) is reduced via the 1-2
and 4-5 shift solenoid valve (1), and the command valve (5) is pushed back to its basic position. Via the holding
pressure shift valve (4) the working pressure (p-A) now passes via the command valve (5) to clutch K1 (6). The
multiple-disc holding clutch B1 (7) is deactivated (unpressurized). The spring of the shift pressure shift valve (3)
pushes the valve back to its basic position.
Second Gear Engaged
1 - 1-2/4-5 SHIFT SOLENOID
5 - 1-2/4-5 COMMAND VALVE
2 - 1-2/4-5 OVERLAP VALVE
6 - DRIVING CLUTCH K1
3 - 1-2/4-5 SHIFT PRESSURE SHIFT VALVE
7 - HOLDING CLUTCH B1
4 - 1-2/4-5 HOLDING PRESSURE SHIFT VALVE
8 - SHIFT PRESSURE REGULATING VALVE
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AUTOMATIC TRANSMISSION NAG1 - SERVICE INFORMATION
LX
Shift Phase - 2-1 Shift Phase 1
The 1-2/4-5 shift solenoid (1) is turned ON to apply shift pressure (p-S) to the end face of the 1-2/4-5 command
valve (5). This allows the command valve to up-shift and the shift pressure coming from the 1-2/4-5 shift valve (3)
is routed to the holding clutch B1 (7) via the command valve.
Simultaneously, the pressure in the releasing clutch, K1 (6), is regulated at the 1-2/4-5 overlap valve (2). The pres-
sure in the K1 clutch as it disengages is controlled during the shift phase depending on engine load, via the mod-
Shift Phase - 2-1 Shift Phase 1
1 - 1-2/4-5 SHIFT SOLENOID
5 - 1-2/4-5 COMMAND VALVE
2 - 1-2/4-5 OVERLAP VALVE
6 - DRIVING CLUTCH K1
3 - 1-2/4-5 SHIFT PRESSURE SHIFT VALVE
7 - HOLDING CLUTCH B1
4 - 1-2/4-5 HOLDING PRESSURE SHIFT VALVE
8 - SHIFT PRESSURE REGULATING VALVE
LX
AUTOMATIC TRANSMISSION NAG1 - SERVICE INFORMATION
21 - 287
ulating pressure (p-MOD), and the shift pressure in clutch B1 (7). The increasing shift pressure in clutch B1, which
also acts on the end face of the overlap valve, reduces the overlap pressure.
Shift Phase - 2-1 Shift Phase 2
The pressure in clutch B1 (7) acting on the end face of the 1-2/4-5 holding valve (4) forces the valve to up-shift
against the spring pressure and allows line pressure (p-A) to pass through the command valve (5).
Shift Phase - 2-1 Shift Phase 2
1 - 1-2/4-5 SHIFT SOLENOID
5 - 1-2/4-5 COMMAND VALVE
2 - 1-2/4-5 OVERLAP VALVE
6 - DRIVING CLUTCH K1
3 - 1-2/4-5 SHIFT PRESSURE SHIFT VALVE
7 - HOLDING CLUTCH B1
4 - 1-2/4-5 HOLDING PRESSURE SHIFT VALVE
8 - SHIFT PRESSURE REGULATING VALVE
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AUTOMATIC TRANSMISSION NAG1 - SERVICE INFORMATION
LX
2-1 Shift - First Gear Engaged
After the gear change is complete, the 1-2/4-5 shift solenoid (1) is turned off. This reduces the pressure on the end
face of the 1-2/4-5 command valve (5) to 0 psi and the spring pressure downshifts the valve to its initial position.
The line pressure (p-A) is switched to the holding clutch B1 (7) and the end face of the holding valve by the down-
shifted command valve. The upshifted holding valve also allows the remaining pressure in clutch K1 (6) to be
vented.
First Gear Engaged
1 - 1-2/4-5 SHIFT SOLENOID
5 - 1-2/4-5 COMMAND VALVE
2 - 1-2/4-5 OVERLAP VALVE
6 - DRIVING CLUTCH K1
3 - 1-2/4-5 SHIFT PRESSURE SHIFT VALVE
7 - HOLDING CLUTCH B1
4 - 1-2/4-5 HOLDING PRESSURE SHIFT VALVE
8 - SHIFT PRESSURE REGULATING VALVE
LX
AUTOMATIC TRANSMISSION NAG1 - SERVICE INFORMATION
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