Isuzu D-Max / Isuzu Rodeo (TFR/TFS). Manual — part 1898

7A4-24 UNIT REPAIR (JR405E)

Disassembly steps

•

Remove the oil filter from the control valve lower body.

244L300009

Legend

1. Oil filter

2. Separation plate

•

Remove the control valve from the control valve lower

body.

NOTE:
Place the control valve where it will not get mixed up with
the other parts.

Inspection

Valve

Inspect each of the valves for denting and other damage.

Spring

Inspect each of the springs for wear and fatigue.

UNIT REPAIR (JR405E) 7A4-25

Valve specifications

244L300008

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/cm

2

) 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.