Page 4201 of 4264

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.
Page 4202 of 4264
7A4-28 UNIT REPAIR (JR405E)
OIL PUMP ASSEMBLY
01PUMP32
Legend
1. Oil seal
2. O-ring (small)
3. Oil pump housing
4. Inner rotor
5. Outer rotor
6. Oil pump cover
7. O-ring (large)
8. Seal ring (large)
9. Seal ring (small)
10. Bearing race
02PUMP07
Disassembly steps
1. Oil pump cover
2. Oil pump housing Loosen the 8 bolts evenly a little at a time.
Page 4203 of 4264
UNIT REPAIR (JR405E) 7A4-29
04PUMP10
Separate the oil pump cover from the oil pump housing
by tapping on each of the bolts with a plastic hammer.
06PUMP13
3. Inner rotor
Remove the inner rotor from the oil pump housing.
07PUMP14
4. Outer rotor
Remove the outer rotor form the oil pump housing.
15PUMP18
5. O-ring (small)
Remove the O-ring (small) from the oil pump housing.
08PUMP09
6. O-ring (large)
Remove the O-ring (large) from the oil pump cover.
Page 4204 of 4264

7A4-30 UNIT REPAIR (JR405E)
09PUMP05
7. Seal ring
Remove the 4 seal rings from the oil pump cover.
11PUMP43
Inspection
Oil pump cover
Install new seal rings to the oil pump cover.
NOTE:
The seal ring with the large inside diameter fits into the
primary mating surface of the cover.
Measure the gap between the seal ring and the seal ring
groove.
If the measured gap is outside the specified range, the
oil pump cover must be replaced.
Seal ring and seal ring groove gap: 0.10
0.25 mm
(0.0039
0.0098 in)
12PUMP45
Inner rotor
Install the inner rotor to the oil pump housing.
Use a straight edge to measure the side clearance
between the oil pump housing and the inner rotor.
If the measured clearance is outside the specified range,
the inner rotor must be replaced.
Oil pump housing and inner rotor side clearance:
0.02~0.04 mm (0.0008~0.0016 in)
13PUMP46
Outer rotor
Install the outer rotor to the oil pump housing.
Measure the gap between the outer rotor and the
crescent.
If the measured gap is outside the specified range, the
outer rotor must be replaced.
Outer rotor and crescent gap:
0.02~0.15 mm (0.0008~0.0059 in)
Page 4205 of 4264
UNIT REPAIR (JR405E) 7A4-31
Reassembly steps
15PUMP18
1. O-ring (small)
Install new O-ring (small) to the oil pump housing.
16PUMP29
2. Outer rotor
3. Inner rotor Install the outer rotor and the inner rotor to the oil pump
housing.
17PUMP42
NOTE:
The identification mark on the inner rotor must be facing
the inside of the oil pump housing.
18PUMP07
4. Oil pump cover
5. Oil pump housing Install the oil pump cover to the oil pump housing.
Tighten the 8 bolts to the specified torque.
Torque: 9 N
m (78 Ib
in)
6. O-ring (large)
Install the O-ring (large) to the oil pump cover.
7. Seal ring Install the 4 seal rings to the oil pump cover.
Page 4206 of 4264
7A4-32 UNIT REPAIR (JR405E)
CLUTCH PACK (REVERSE AND
HIGH CLUTCH ASSEMBLY)
01R&H17
Legend
1. Reverse and high clutch drum
2. Seal ring (reverse clutch)
3. Lip seal (reverse clutch)
4. Reverse clutch piston
5. Seal ring (small, high clutch)
6. Seal ring (large, high clutch)
7. High clutch piston
8. Return spring
9. High clutch cover
10. Snap ring
11. Dish plate (high clutch)
12. Driven plates (5, high clutch)
13. Drive plates (5, high clutch)
14. Retaining plate (high clutch)
15. Snap ring (high clutch)
16. Dish plate (reverse clutch)
17. Driven plates (2, reverse clutch)
18. Drive plates (2, reverse clutch)
19. Retaining plate (reverse clutch)
20. Snap ring (reverse clutch)
02R&H18
Disassembly steps
1. Snap ring
Remove the reverse clutch snap ring.
Page 4207 of 4264
UNIT REPAIR (JR405E) 7A4-33
03R&H21
2. Retaining plate, drive plate, driven plate and dish plate
Remove the reverse clutch retaining plate, the 2 drive
plates, the 2 driven plates, and the dish plate.
04R&H22
3. Snap ring
Remove the high clutch snap ring.
05R&H25
4. Retaining plate, drive plate, driven plate and dish plate
Remove the high clutch retaining plate, the 5 drive plates,
the 5 driven plates, and the dish plate.
07R&H28
5. Snap ring
6. High clutch cover
7. Return spring Install the spring compressor to the reverse and high
clutch drum.
Spring compressor: 5-8840-2767-0
Carefully press the high clutch cover down .
Take care not to damage the return spring.
Remove the snap ring.
Remove the high clutch cover and the return spring.
Page 4208 of 4264
7A4-34 UNIT REPAIR (JR405E)
08R&H36
8. High clutch piston
9. Reverse clutch piston Install the reverse and high clutch drum to the oil pump.
Force compressed air into the oil pump oil channels.
Remove the high clutch piston and the reverse clutch
piston.
09R&H37
12R&H39
10.Seal ring (high clutch)
Remove the 2 seal rings from the high clutch piston.
13R&H38
11.Seal ring (reverse clutch)
Remove the 2 seal rings from the reverse clutch piston.
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)