Isuzu KB P190. Manual — part 1069

CONSTRUCTION AND FUNCTION 7A1-37

COMPONENT AND THEIR OPERATING CONDITION

Clutch

Brake

Solenoid

Pressure Switch

Select

lever

position

Gear

position

Gear

Shift

Lock-

up

L/C

H/C

R/C

L/O.C

L&R/B

2-4/B

L/C.S

H/C.S

L&R/

B.S

2-4/

B.S

L/U.S

H/

C.P/

SW

L&R/

B.P/

SW

2-4

B.P/

SW

P

-

-

R

Reverse -

N

-

-

1st

2nd

3rd

D

4th

1st

2nd

3rd

3

4th(*1)

1st

2nd

3rd(*1)

2

4th(*1)

1st

2nd(*1)

3rd(*1)

L

4th(*1)

*1: Shifting the select lever to manual position at high speed, the transmission may hold the gear position
until vehicle speed get down to certain speed to prevent engine overrun.

- Engaged or operated

- Operative when accelerating

7A1-38 CONSTRUCTION AND FUNCTION

P Position
Although the driving force of the input shaft is transmitted to the rear sun gear and reverse & high clutch
drum, the driving force is not transmitted to the output shaft since all of the clutches and brakes are not
engaged. Therefore, the vehicle can move in this condition. However, since the output shaft is mechanically
locked with the parking pawl, the rear planetary carrier and front internal gear are locked. For this reason, the
vehicle does not move.

CONSTRUCTION AND FUNCTION 7A1-39

N Position
Although the driving force of the input shaft is transmitted to the rear sun gear and reverse & high clutch
drum, the driving force is not transmitted to the output shaft, as all of the clutches and brakes are not
engaged. Therefore, the vehicle can move at this condition.

7A1-40 CONSTRUCTION AND FUNCTION

Reverse Gear in Position

The driving force from the input shaft is transmitted to the rear sun gear and reverse & high clutch drum. In the R
position, the reverse clutch is engaged and the driving force is transmitted to the front sun gear and rotates it
clockwise. The low & reverse brake is also engaged and the front planetary carrier is fixed so that the front pinion
gear does not rotate clockwise, but can rotate counterclockwise. As a result, the output shaft rotates
counterclockwise and the vehicle goes backwards.