2007 ISUZU KB P190 oil

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

7A4-10 UNIT REPAIR (JR405E)

39ASSY006

•
Remove the bearing and the low one-way clutch inner
race from the transmission case.
• Remove the bearing from the low one-way clutch inne
r
race.


40ASSY005

21.Low and reverse brake return spring
Remove the low and reverse brake return spring from the
transmission case.


41L&R02

22.Low and reverse brake piston
• Force compressed air (390 kPa/4.0 kgf/cm
2/57 psi)
through the transmission case oil passages.


42ASSY004

•
Remove the low and reverse brake piston from the
transmission case.


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ISUZU KB P190 2007

UNIT REPAIR (JR405E) 7A4-11
CONTROL VALVE ASSEMBLY


01CV40

Disassembly steps
1. Oil strainer
Remove the 13 bolts and the oil strainer from the control
valve assembly.


02CV26

2. Harness assembly
Remove the harness assembly.


04CV21

3. Solenoid fixing plate
4. Harness bracket • Remove the 11 bolts and the solenoid fixing plate
together with the harness bracket.


05CV20



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ISUZU KB P190 2007

7A4-12 UNIT REPAIR (JR405E)

06CV19

5. Solenoid
6. Oil pressure switch Remove the 6 solenoids together and the 3 oil pressure
switches.


07CV17

7. Control valve upper body
8. Control valve lower body
9. Separation plate • Remove the 17 bolts securing the control valve uppe
r
body, the control valve lower body, and the separation
plate.


08CV16

•
Separate the upper body, the lower body, and the
separation plate.
NOTE:
Take care not to drop or lose the parts at the inside of the
control valve.

Inspection
•
Inspect the separation plate for wear and other damage.


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ISUZU KB P190 2007

UNIT REPAIR (JR405E) 7A4-15
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

7A4-16 UNIT REPAIR (JR405E)

12CV19

4. Solenoid
5. Oil pressure switch • Install the O-rings to each of the solenoids.
• Install the 6 solenoids together and the 3 oil pressure
switches.
NOTE:
Be sure the high clutch oil pressure switch is marked.
• Tighten the bolts to the specified torque.
Torque:
Oil pressure switch bolts – 4 N ⋅
⋅⋅
⋅
m (0.4 kgf ⋅
⋅⋅
⋅
m/35 Ib ⋅
⋅⋅
⋅
in)
Line pressure solenoid bolt (Single gold-colored bolt 16
mm) – 8 N ⋅
⋅⋅
⋅
m (0.8 kgf ⋅
⋅⋅
⋅
m/69 Ib ⋅
⋅⋅
⋅
in)
6. Solenoid fixing plate
7. Harness bracket Install the solenoid fixing plate together with the harness
bracket.
Tighten the bolts to the specified torque.
Torque: 8 N ⋅
⋅⋅
⋅
m (0.8 kgf ⋅
⋅⋅
⋅
m/69 Ib ⋅
⋅⋅
⋅
in)
Number Length (Color)
Solenoid fixing plate bolt
(A) 4 16 mm (0.63 in) (Gold)
(B) 7 45 mm (1.77 in) (Silver)

13CV20




14CV21



15CV26

8. Harness assembly
Install the harness assembly.


















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ISUZU KB P190 2007

UNIT REPAIR (JR405E) 7A4-17
9. Oil strainer Install the oil strainer.
Tighten the bolts to the specified torque.
Torque: 8 N ⋅
⋅⋅
⋅
m (0.8 kgf ⋅
⋅⋅
⋅
m/69 Ib ⋅
⋅⋅
⋅
in)
Number Length (Color)
Oil strainer bolt
(C) 9 13 mm (0.51 in) (Silver)
(D) 4 45 mm (1.77 in) (Silver)

16CV40




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ISUZU KB P190 2007

7A4-22 UNIT REPAIR (JR405E)
12 High clutch amp 12.0 /
0.472 53.5 /
2.106
13 High clutch
solenoid
accumulator 14.0 /
0.551 19.5 /
0.768

Spring specifications
No. Valve nomenclature Free length
(mm / in) Outside
diameter (mm / in) Linear
diameter (mm / in) Number of
coils
1 Manual ---- ---- ---- ----
2 2 – 4 brake accumulator 43.9 / 1.728 11.0 / 0.433 2.0 / 0.079 13.1
3 Low and reverse brake fail (B) 22.0 / 0.866 7.0 / 0.276 0.6 / 0.024 10.0
4 Reverse stall 31.5 / 1.240 7.0 / 0.276 1.0 / 0.039 12.8
5 Low and reverse solenoid brake
accumulator 31.4 / 1.236 9.8 / 0.386 1.3 / 0.051 9.3
6 Pilot
32.0 / 1.260 11.0 / 0.433 1.3 / 0.051 9.2
7 Low clutch solenoid accumulator 31.4 / 1.236 9.8 / 0.386 1.3 / 0.051 9.3
8 Low clutch amp (A) 23.0 / 0.906 11.0 / 0.433 0.5 / 0.020 13.2
9 2 – 4 brake fail (B) 24.8 / 0.976 8.5 / 0.335 0.9 / 0.035 7.8
10 Lock-up control 27.0 / 1.063 14.0 / 0.551 1.1 / 0.043 5.7
11 2 – 4 brake amp 23.0 / 0.906 11.0 / 0.433 0.5 / 0.020 13.2
12 High clutch amp 23.0 / 0.906 11.0 / 0.433 0.5 / 0.020 13.2
13 High clutch solenoid accumulator 31.4 / 1.236 9.8 / 0.386 1.3 / 0.051 9.3
Reassembly steps
• Coat the parts with ATF before installing them.
• Install the control valve to the upper body.
• Install the 11 steel balls and springs to the upper body.



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ISUZU KB P190 2007