SSANGYONG Musso Sports N100 2003 Manual page 1138

5A-52 AUTOMATIC TRANSMISSION
POWER FLOW - DRIVE 2 AND MANUAL 2
In Drive 2 and Manual 2, transmission drive is via the input shaft and forward clutch cylinder. The elements of the
transmission function as follows :
The C2 clutch is applied to drive the forward sun gear.
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The forward sun gear drives the short pinion anti-clockwise.
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The short pinion drives the long pinion clockwise.
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The B1 band is applied holding the reverse sun gear stationary therefore the long pinion 'walks' around the
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reverse sun gear taking the internal ring gear and output shaft with it in a clockwise or forward direction.
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 On.
Solonoid S1 is switched Off. S2 is switched On.
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Drive (line pressure) oil from the manual valve engages the C2 clutch.
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When S1 switches off , S1 oil pressure, which is derived from line 500 pressure, moves the 3-4 shift valve to
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the left. At the same time S1 oil is directed to the 1-2 shift valve which moves the valve to the second gear
position.
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
Drive (line pressure) is routed through the 3-4 shift valve to apply the C4 clutch.
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Refer to figure 5.5 and table 5.6.
Table 5.6 - Engaged Elements - Drive 2 and Manual 2
Gear State
Drive 2 and Manual 2
C1 C2 C3
- X
-
ELEMENTS ENGAGED
C4 B1 B2
OWC
X
X -
1-2 3-4 LU
OWC CLUTCH
- X -