2004 ISUZU TF SERIES length

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
switchs.
NOTE:
Be sure the high clutch oil pressure switch is marked.

Tighten the bolts to the specified torque.
Torque:
Oil pressure switch bolts – 4.4 N






m (39 Ib






in)
Line pressure solenoid bolt (Single gold-colored bolt 16
mm) – 8 N






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.

Number Length (Color)
Solenoid fixing plate bolt
(A) 4 16 mm (0.63 in) (Gold)
(B) 7 45 mm (1.77 in) (Silver)

13CV20


Torque: 8 N






m (69 Ib






in)

14CV21



15CV26

8. Harness assembly
Install the harness assembly.

UNIT REPAIR (JR405E) 7A4-17
9. Oil strainer Install the oil strainer.
Tighten the bolts to the specified torque.

Number Length (Color)
Oil strainer bolt
(C) 9 13 mm (0.51 in) (Silver)
(D) 4 45 mm (1.77 in) (Silver)

16CV40


Torque: 8 N






m (69 Ib






in)

UNIT REPAIR (JR405E) 7A4-21
No. Valve
nomenclature Diameter
(mm / in) Length
(mm / in)Configuration
1 Manual 12.0 /
0.472 82.0 /
3.228
2 2 – 4 brake
accumulator 15.0 /
0.591 37.5 /
1.476
3 Low and reverse
brake fail (B) 10.0 /
0.394 52.0 /
2.047
4 Reverse stall 8.0 /
0.315 50.0 /
1.969
5 Low and reverse
brake solenoid
accumulator 14.0 /
0.551 19.5 /
0.768
6 Pilot 12.0 /
0.472 38.5 /
1.516
7 Low clutch
solenoid
accumulator 14.0 /
0.551 19.5 /
0.768
8 Low clutch amp
(A) 12.0 /
0.472 53.5 /
2.106
9 2 – 4 brake fail
(B) 10.0 /
0.394 39.0 /
1.535
10 Lock-up control 12.9 /
0.508 57.5 /
2.264
11 2 – 4 brake amp 12.0 /
0.472 53.5 /
2.106

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 spring to the upper body.

7A4-26 UNIT REPAIR (JR405E)
No. Valve
nomenclature Diameter
(mm / in) Length
(mm / in)Configuration
14 Pressure relief ---- ----

15 Pressure
regulator 16.0 /
0.630 89.5 /
3.524
16 Low and reverse
brake fail (A) 10.0 /
0.394 52.0 /
2.047
17 Fail 12.0 /
0.472 53.5 /
2.106
18 Low and reverse
brake amp 12.0 /
0.472 55.5 /
2.185
19 2 – 4 brake fail
(A) 10.0 /
0.394 65.5 /
2.579
20 Low clutch amp
(B) 12.0 /
0.472 53.0 /
2.087
21 Torque
converter relief 10.0 /
0.394 37.4 /
1.472
22 2 – 4 brake
solenoid
accumulator 14.0 /
0.551 19.5 /
0.768
23 High clutch
accumulator 10.0 /
0.394 31.0 /
1.220

UNIT REPAIR (JR405E) 7A4-27

Spring specifications
No. Valve nomenclature Free length
(mm / in) Outside
diameter (mm
/ in) Linear
diameter (mm
/ in) Number of
coils
14 Pressure relief 49.0 / 1.929 7.6 / 0.299 1.1 / 0.043 17.3
15 Pressure regulator 30.5 / 1.201 14.0 / 0.551 1.4 / 0.055 5.7
16 Low and reverse brake fail (A) 22.0 / 0.866 7.0 / 0.276 0.6 / 0.024 10.0
17 Fail 23.0 / 0.906 11.0 / 0.433 0.5 / 0.020 13.2
18 Low and reverse brake amp 19.5 / 0.768 7.9 / 0.311 0.5 / 0.020 6.9
19 2 – 4 brake fail (A) 24.8 / 0.976 8.5 / 0.335 0.9 / 0.035 7.8
20 Low clutch amp (B) 26.0 / 1.024 11.0 / 0.433 0.5 / 0.020 6.9
21
Torque converter relief More than 47.2
/ 1.858 9.2 / 0.362 1.6 / 0.063 20.2
22 2 – 4 brake solenoid accumulator 31.4 / 1.236 9.8 / 0.386 1.3 / 0.051 9.3
23 High clutch accumulator 51.0 / 2.008 6.5 / 0.256 0.8 / 0.031 23.5

Oil pressure switch
Apply compressed air (392 kPa/4.0 kg/cm2) to the oil pressure
switch to check the oil pressure switch continuity between the
connector and screw.






244L300011

Oil temperature sensor (harness assembly)
Check the oil temperature sensor resistance between harness
terminals 7 and 6 (ground).

Oil temperature sensor resistance: 2,400




2,600 ohms
(20
 )


Solenoid
Measure the resistance of each solenoid.

Resistance:
Brown connector – 3.0
 3.4 ohms (20
 C)
Gray connector – 12.0
 13.2 ohms (20
 C)
White connector – 12.2
 13.4 ohms (20
 C)

Reassembly steps

Coat the parts with ATF before installing them.

Install the control valve to the control valve lower body.

Install the oil filter to the control valve lower body.

UNIT REPAIR (JR405E) 7A4-35
Return spring
Check the number of effective return spring coils.
If the number is less than the specified minimum, the
return spring must be replaced.
Effective return spring coils (standard): 10.2

Measure the return spring outside diameter, free length,
and linear diameter.
If any of the measured values exceed the specified limit,
the return spring must be replaced.
Return spring measurements (standard):
Outside diameter – 8.0 mm (0.315 in)
Free length – 27.1 mm (1.067 in)
Linear diameter – 1.1 mm (0.043 in)


10R&H40

Reverse clutch piston

Apply compressed air (392 kPa/4.0 kg/cm
2) to the
reverse clutch piston from the outside to the inside.
The flow of air should be blocked.


11R&H44



Apply compressed air (392 kPa/4.0 kg/cm2) to the
reverse clutch piston from inside to the outside.
The flow of air should be unrestricted.


12R&H39

Reassembly steps
Coat the parts with ATF before installing them.
1. Seal ring (high clutch)
Install new seal rings to the high clutch piston.

7A4-46 UNIT REPAIR (JR405E)

18C&L-SUB28

19.Low one-way clutch
Remove the low one-way clutch.

19C&L-SUB29

20.Snap ring
Remove the snap ring from the low clutch drum.

20C&L-SUB31

21.Bearing
Remove the bearing.



Inspection
Drive plate

Measure the drive plate facing thickness at 3 points.

Calculate the average value.
If the average value is less than the specified limit, the
drive plate must be replaced.
Drive plate facing thickness:
Standard – 2.0 mm (0.079 in)
Limit – 1.8 mm (0.071 in)
Return spring

Check the number of effective return spring coils.
If the number is less than the specified minimum, the
return spring must be replaced.
Effective return spring coils (standard): 9.9

Measure the return spring outside diameter, free length,
and linear diameter.
If any of the measured values exceed the specified limit,
the return spring must be replaced.
Return spring measurements (standard):
Outside diameter – 9.7 mm (0.382 in)