SSANGYONG Musso Sports N100 2003 Manual page 1140

5A-54 AUTOMATIC TRANSMISSION
POWER FLOW - DRIVE 3 AND MANUAL 3
In Drive 3 and Manual 3, transmission drive is via the input shaft to the forward clutch cylinder. The elements of the
transmission function as follows :
The C2 clutch is engaged to drive the forward sun gear.
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The C1 clutch is engaged to drive the planet carrier.
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The forward sun gear and the planet carrier are driven clockwise at the same speed therefore there is no
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relative motion between the sun gear and the pinions.
The ring gear and output shaft are driven in a clockwise or forward direction at input shaft speed.
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The C4 clutch is applied to bypass the 3-4 OWC and provide engine braking on overrun.
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Control
To maintain this arrangement in the steady state solenoids and valves are activated as follows:
Solenoid S1 is switched Off. S2 is switched Off.
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With S1 and S2 switched Off, the 2-3 and 3-4 shift valves are held in the third gear position by line 500
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pressure.
The 1-2 shift valve is held in the third gear position by S1-S2 oil pressure.
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2nd oil (line pressure) from the 1-2 shift valve is directed to the band apply regulator valve. and to the 2-3 shift
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valve.
The band apply regulator valve supplies 2nd oil (regulated to line pressure multiplied by the valve ratio) to the
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band apply feed (BAF) circuit.
Band apply feed oil is directed to:
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- The outer apply area of the front servo
- The 1-2 shift valve to provide an exhaust port when the transmission is shifted to first gear
- The 3-4 shift valve for use when the transmission is shifted into fourth gear
2nd oil at the 2-3 shift valve is directed to the 3rd oil circuit.
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3rd oil from the 2-3 shift valve is directed to the clutch apply regulator valve, and to the 4-3 Sequence Valve.
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The clutch apply regulator valve supplies oil (regulated to line 500 pressure multiplied by the valve ratio) to the
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clutch apply feed (CAF) circuit.
The CAF oil is directed to:
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- The C1 clutch
- The C1 bias valve
- The 4-3 sequence valve
At the 4-3 sequence valve the CAF oil becomes band 1 release feed (B1R-F) oil, and is directed through the
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3-4 shift valve to the spring end of the 4-3 sequence valve, and to the release side of the front servo piston to
hold band 1 off.
Drive (line pressure) is routed through the 3-4 shift valve to apply the C4 clutch.
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Refer to figure 5.6 and table 5.7.
Table 5.7 - Engaged Elements - Drive 3 and Manual 3
Gear State
Drive 3 and Manual 3
C1 C2
C3
X X -
ELEMENTS ENGAGED
B1
C4
B2
OWC
X -
-
1-2
3-4 LU
OWC CLUTCH
- X -