2004 ISUZU TF SERIES brake

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: White)
4. Low and reverse brake duty solenoid connector
(wire color: Pink and White)
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)

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 fron
t
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.

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 (2WD) o
r
the adapter case (4WD).

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 (329kPa/4.0kg/cm
2) through the
transmission case oil passages.


42ASSY004



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

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: White)
4. Low and reverse brake duty solenoid
connector (wire color: Pink and White)
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)

7A4-18 UNIT REPAIR (JR405E)

CONTROL VALVE UPPER BODY

09CV02
Legend
1. Manual valve, and pin
2. Retainer plate, spring, and 2-4 brake
accumulator
3. Retainer plate, plug, and low and
reverse brake fail valve B
4. Retainer plate, plug, spring, and reverse
stall valve
5. Retainer plate, spring, and low and
reverse brake solenoid accumulator
6. Retainer plate, spring, and pilot valve
7. Retainer plate, spring, and low clutch
solenoid accumulator
8. Retainer plate, plug, spring, and low
clutch amp valve A

9. Retainer plate, plug, spring, and 2-4
brake fail valve B
10. Retainer plate, sleeve, plug, spring, and
lock-up control valve
11. Retainer plate, plug, spring, and 2-4
brake amp valve
12. Retainer plate, plug, spring, and high
clutch amp valve
13. Retainer plate, spring, and high clutch
solenoid accumulator
14. Control valve upper body
15. Spring
16. Steel ball

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.