Ford Falcon. Manual — part 229

307-01-19 Automatic

Transmission 307-01-19

DESCRIPTION AND OPERATION (Continued)

Hydraulic System - Neutral and Park

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307-01-20 Automatic

Transmission 307-01-20

DESCRIPTION AND OPERATION (Continued)

Power Flow — Reverse

Drive is via the input shaft and the forward clutch

preventing reverse pressure from applying the B2

cylinder to the hub of the C3 clutch. The C3 clutch is

band.

engaged and drives the reverse sun gear in a

clock-wise direction. The B2 band is engaged and

holds the planetary gear carrier stationary causing the

long pinion to rotate anticlockwise about its axis on

the pinion shaft. The long pinion drives the internal

ring gear in the same direction. The internal ring being

splined to the output shaft drives it in an

anti-clockwise or reverse direction.

Control
Solenoid 2 is switched OFF.

In any given reverse engagement S1 and S3 have

opposite states (for example S1 ON, S3 OFF). Each

subsequent reverse engagement changes the

ON/OFF state of S1 and S3 (eg S1 OFF, S3 ON).

Thus oil pressure from EITHER S1 OR S3 pilots the

Reverse Lockout (RLO) valve into the B2 band

applied position.
Reverse (Line) pressure oil is routed from the Manual

valve direct to the C3 clutch and through the RLO

valve to both the inner and outer apply areas of the

rear servo piston for B2 band application. All other

clutch and band apply circuits are open to exhaust.
To obtain the RLO state, solenoids 1 and 3 are

switched ON to exhaust tracks S1 and S3. The RLO

spring biases the RLO valve to the lockout position

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307-01-21 Automatic

Transmission 307-01-21

DESCRIPTION AND OPERATION (Continued)

Hydraulic System - Reverse

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307-01-22 Automatic

Transmission 307-01-22

DESCRIPTION AND OPERATION (Continued)

Power Flow — Sequential Sport Shift 1 /

Manual 1

Drive is via the input shaft to the forward clutch

cylinder. The C2 clutch is engaged to drive the

forward sun gear via the 3-4 OWC. The B2 band and

the 1-2 OWC are engaged to hold the planetary gear

carrier stationary. The forward sun gear drives the

short pinion anti-clockwise. The short pinion drives the

long pinion clockwise. The long pinion rotating about

its axis drives the internal ring gear and the output

shaft in a clockwise or forward direction. The C4

clutch provides engine braking by by-passing the 3-4

OWC on overrun.

Control
Solenoids 1, 2 and 3 are switched ON. The 1-2, 2-3,

3-4 shift valves are held in their first gear positions by

Line 500 pressure. Drive (Line pressure) oil from the

Manual valve applies the C2 clutch. Lo-1st (Line

pressure) oil is routed through the 1-2 shift valve to

the C4 clutch and to the inner apply area of the rear

servo piston for B2 band application.

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