2007 ISUZU KB P190 brake

TRANSMISSION CONTROL SYSTEM (JR405E) 7A2-167
Second Gear
Legend1. Input shaft
2. Front planetary carrier
3. Front pinion gear
4. Front sun gear
5. Rear sun gear
6. Rear pinion gear
7. Rear internal gear
8. Output shaft
9. Reverse clutch 10. 2-4 brake
11. High clutch
12. Front internal gear
13. Rear planetary carrier
14. Low clutch
15. Low & reverse brake
16. Low one-way clutch
17. Parking pawl
The driving force from the input shaft (1) is transmitted
to the rear sun gear (5) and reverse & high clutch drum.
As in the case of the 1st gear, the low clutch (14) is
engaged and the movement of the rear internal gear (7)
is restricted. Since the 2-4 brake is engaged (10), the
front sun gear (4) is fixed. As a result, movement of the
rear internal gear (7) is restricted, and the driving force
transmitted to the rear sun gear (5) rotates the rear
planetary carrier (13) clockwise. The rotating speed of
the rear planetary carrier (13) is higher than in 1st gear as the rear internal gear (7) rotates. When decelerating,
the engine brake is applied.

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ISUZU KB P190 2007

7A2-168 TRANSMISSION CONTROL SYSTEM (JR405E)
Third Gear
Legend1. Input shaft
2. Front planetary carrier
3. Front pinion gear
4. Front sun gear
5. Rear sun gear
6. Rear pinion gear
7. Rear internal gear
8. Output shaft
9. Reverse clutch 10. 2-4 brake
11 . H i g h c l u t c h
12. Front internal gear
13. Rear planetary carrier
14. Low clutch
15. Low & reverse brake
16. Low one-way clutch
17. Parking pawl
The driving force from the input shaft (1) is transmitted
to the rear sun gear (5) and reverse & high clutch drum.
As in the case of the 1st gear and 2nd gear, the low
clutch (14) is engaged and the movement of the rear
internal gear (7) is restricted. Since the high clutch (11)
is engaged, the driving force from the input shaft (1) is
directly transmitted to the rear internal gear (7). As a
result, the speed of the rear sun gear (5) and the rear
internal gear (7) becomes the same as that of the input
shaft (1), so that the rear pinion gear rotates (6) not independently but together with the rear sun gear (5)
and rear internal gear (7). When decelerating, the
engine brake is applied.

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ISUZU KB P190 2007

TRANSMISSION CONTROL SYSTEM (JR405E) 7A2-169
Fourth Gear
Legend1. Input shaft
2. Front planetary carrier
3. Front pinion gear
4. Front sun gear
5. Rear sun gear
6. Rear pinion gear
7. Rear internal gear
8. Output shaft
9. Reverse clutch 10. 2-4 brake
11. High clutch
12. Front internal gear
13. Rear planetary carrier
14. Low clutch
15. Low & reverse brake
16. Low one-way clutch
17. Parking pawl
The driving force from the input shaft (1) is transmitted
to the rear sun gear (5) and reverse & high clutch drum.
Since the 2-4 brake (10) is engaged, the front sun gear
(4) is fixed. In addition to this the high clutch (11) is
engaged. As a result, the front pinion gear (6) rotates
itself together with other gears clockwise. This rotation
increases the speed of rotation of the front internal gear
(12) and is transmitted to the output shaft (8).

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ISUZU KB P190 2007

7A3-2 ON-VEHICLE SERVICE (JR405E)
DESCRIPTION
Before performing on-vehicle service on the automatic
transmission, check that the engine idling speed and
general engine condition are normal.
For shift interlock function, if the ignition key is out of
“LOCK” position, the shift lever select button can not be
pushed. (shift lever can not be operated.)

RTW 77ASH000901

AUTOMATIC TRANSMISSION FLUID (ATF)
Inspect
Remove the transmission dipstick to check the condition
of the ATF.
Check the color and smell of the ATF.
If the ATF is abnormal color or smells burnt, replace it
and investigate the cause of trouble.
Coloor of ATF Condition Clear red Normality
Blackish discoloration Defects of power train
parts (clutches)
W hite turbidity Include water
Discoloration of red brown Deterioration of ATF

ATF LEVEL
Inspect
Hot Level
1. W arm up the engine and the transmission by driving
the vehicle on the road so that the temperature
reaches around 80 °C (176 °F).
Do not turn the engine off.
2. Park the vehicle on a level surface.
3. Apply the parking brake firmly.
4. Let the engine run at idle.
Move the select lever slowly through all the gea
r
positions.
Stop in each gear position just long enough for the transmission to engage.
5. Return the select lever to either “P” or “N”.
6. Remove the ATF level dipstick.
7. W ipe the dipstick clean with a paper towel.
8. Reinsert the dipstick and wait several seconds.
9. Remove the dipstick.
The ATF level should be inside the “H” range on the dipstick.
242R300001
If the ATF level is below the “H” range, ATF must be added.

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ISUZU KB P190 2007

ON-VEHICLE SERVICE (JR405E) 7A3-3
Cold Level
The vehicle must not have been driven so that the
temperature reaches around 20 °C (68 °F) before the
cold level check is made.
1. Park the vehicle on a level surface.
2. Apply the parking brake firmly.
3. Start the engine and allow it to warm up.
The engine coolant temperature gauge needle should be midway between the “C” mark and “H”
mark.
4. Let the engine run at idle.
Move the select lever slowly through all the gea
r
ranges.
Stop in each range just long enough for the transmission to engage.
5. Return the select lever either “P” or “N”.
6. Remove the ATF level dipstick.
7. W ipe the dipstick clean with a paper towel.
8. Reinsert the dipstick and wait several seconds.

9. Remove the dipstick.
The ATF level should be inside the “C” range on the dipstick.
If the ATF level is below the “C” range, ATF must be added.
242R300002


ATF CHANGE
1. Park the vehicle on level ground and block the rear
wheels.
2. Start the engine and allow it to idle until the ATF reaches a temperature of 40-50 °C (104-122 °F).
3. Stop the engine.
4. Raise the front to the vehicle and support with suitable safety stands.
5. Remove the drain plug from the oil pan and drain the ATF (approximately 6 liters).





6. Remove the oil pan.
7. Inspect the oil pan (details written below).
8. Install the oil pan.
Note:
Use a new gasket. Clean the oil pan and magnet.
Oil pan bolt torque : 8 N ⋅m (0.8 kgf ⋅m/69 lb ⋅in)
9. Replace the gasket and install the drain plug.
Drain plug torque : 35 N ⋅m (3.6 kgf ⋅m/26 lb ⋅ft)
Note:
Do not reuse the old washer (gasket).
Clean the drain plug (especially the threaded section).
10.Remove the safety stands and wheel blocks.
11.Pour about 5 liters of new ATF.
12. Start the engine. W ith your foot on the brake, move the shift lever through each gear range, and shift to
“P” range.
13.Check the ATF level. Add more ATF carefully as necessary using the dipstick. Refer to “ATF LEVEL”
preciously in this section.
Note:
Keep the engine idle (do not stop it) during the ATF level
adjustment.


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ISUZU KB P190 2007

7A3-16 ON-VEHICLE SERVICE (JR405E)
SOLENOIDS, OIL PRESSURE SWITCH AND OIL TEMPERATURE
SENSOR
244L300003
Legend
1. High clutch oil pressure switch connector
(wire color: Gray)
2. 2-4 brake oil pressure switch connector
(wire color: Brown)
3. Low and reverse brake oil pressure switch connector (wire color: W hite)
4. Low and reverse brake duty solenoid connector
(wire color: Pink and W hite)
5. High clutch duty solenoid connector
(wire color: Green and Gray)

6. Lock-up duty solenoid connector
(wire color: Yellow and Black)
7. 2-4 brake duty solenoid connector
(wire color: Blue and Brown)
8. Low clutch duty solenoid connector
(wire color: Orange and Black)
9. Line pressure solenoid connector
(wire color: Pink)




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ISUZU KB P190 2007

UNIT REPAIR (JR405E) 7A4-7

16ASSY047

11.High clutch hub, bearing, and bearing race
• Remove the clutch hub, bearing (with bearing race), and
the bearing race.
• Remove the bearing (with bearing race) and the bearing
race from the high clutch hub.
• Inspect the bearing race surfaces for damage.



17ASSY040

12.Front sun gear, bearing, and bearing race
• Remove the bearing, the front sun gear, and the bearing
race.
• Remove the bearing and the bearing race from the front
sun gear.
• Inspect the bearing race surfaces for damage.


19ASSY113

13.2-4 brake retainer
• Remove the brake seal ring and the sleeve.



23ASSY030

•
Attach the spring compressor to the transmission case.
Spring compressor: 5-8840-2764-0



24ASSY029

•
Force out the 2-4 brake retainer and remove the snap
ring.
NOTE:
Overturning the spring compressor will damage the 2-4
brake retainer.
• Remove the spring compressor.



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ISUZU KB P190 2007

7A4-8 UNIT REPAIR (JR405E)

25ASSY019

•
Remove the 2-4 brake retainer and return spring.



26ASSY026

14.Carrier assembly (Carrier and low clutch assembly),
bearing, bearing race, and 2 – 4 brake assembly
• Pull the carrier assembly, the bearing, the bearing race
and the 2-4 brake assembly (Dish plate, retaining plate,
drive plate, and driven plate) from the transmission case
at the same time.
• Remove the bearing, the bearing race, and the 2-4
brake assembly from the carrier assembly.



27U-SPG02

•
Remove the 3 brake springs from the transmission case.



28L&R06

15.Low and reverse brake
• Remove the snap ring.
• Pull the low and reverse brake free.


16.Rear extension (2WD) or Adapter case (4WD)
• Rotate the transmission case so that the oil pan opening
is facing up.
• Remove the 10 bolts and the rear extension (2W D) o
r
the adapter case (4W D).


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ISUZU KB P190 2007