ISUZU TF SERIES 2004 Workshop Manual

UNIT REPAIR (AW30–40LE) 7A4–93
Disassembly
1. Remove detent spring from valve body.
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2. Remove the manual shift valve.
3. Remove the upper valve body.
4. Remove the no.1 gasket (Upper valve body side).
5. Remove the valve body plate.
Turn over assembly and remove thirty bolts.
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6. Remove the clamp.7. Remove the pressure control solenoid.
Hold the valve body plate to the upper valve body.
Lift off upper valve body and plate as a single unit.
NOTE: Be careful that the check balls and strainers do
not fall out.
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8. Remove the no.2 gasket (Lower valve body side).
9. Remove the lower valve body.
Reassembly
1. Position a new No.1 gasket (1) on upper valve body.
Align the No.1 gasket at each bolt hole.
2. Position valve body plate (2) on No.1 gasket (1).
Align the plate at each bolt hole.
3. Position a new No.2 gasket (3) on valve body plate
(2).
Align the No.2 gasket at each bolt hole.
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7A4–94 UNIT REPAIR (AW30–40LE)
4. Place upper valve body with plate and gaskets on
top of lower valve body.
Align each bolt hole and gasket in the valve body.
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5. Install the pressure control solenoid and clamp.
6. Install thirty bolts to upper valve body.
Each bolt is indicated in the figure.
Torque: 6.4 N·m (57Ibin)
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7. Install manual shift valve.
Length (mm) Quantity
A207
B2812
C4011

UNIT REPAIR (AW30–40LE) 7A4–95
8. Install detent spring.
Torque: 10 N·m (87Ibin)
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7A4–96 UNIT REPAIR (AW30–40LE)
Lower Valve Body
Cross Section
RUW 37A M F00 1901

UNIT REPAIR (AW30–40LE) 7A4–97
Disassembled View
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Legend
(1) By-pass valve
(2) Spring
(3) Strainer
(4) Shift solenoid S1
(5) Shift solenoid S2
(6) Lock-up solenoid SL
(7) Clamp
(8) Accumulator sub-assembly
(9) Retainer
(10) Spring
(11) Ball
(12) Retainer
(13) Plug
(14) Spring
(15) 1–2 shift valve
(16) Retainer
(17) Spring(18) Low coast modulator valve
(19) Retainer
(20) Plug
(21) Spring
(22) Accumulator control valve
(23) Retainer
(24) Spring
(25) Solenoid modulator valve
(26) Retainer
(27) Plug
(28) Spring
(29) Cut back valve
(30) Retainer
(31) Sleeve
(32) Plunger
(33) Plunger
(34) Spring
(35) Washer
(36) Primary regulator valve

7A4–98 UNIT REPAIR (AW30–40LE)
E nd O FCallo ut
Disassembly
1. Remove by-pass valve and spring.
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2. Remove three strainers.
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NOTE: Confirm six retainers are installed correctly.
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3. Remove the shift solenoid S1 and shift solenoid S2.
Remove the fix ing bolt.
Remove the shift solenoid S1 (2) and S2 (1) from
each bore.
Remove the O-rings from each solenoid.
4. Remove the lock-up solenoid SL
Remove the fix ing bolt.
Remove the lock-up solenoid SL (3) from the
bore.
Remove the O-ring from solenoid.
5. Remove the accumulator sub-assembly
Remove the clamp.
Remove the accumulator sub-assembly (4) from
the bore. (37) Lower valve body

UNIT REPAIR (AW30–40LE) 7A4–99
6. Remove the retainer (5).
Remove the spring and ball from the valve body.
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7A4–100 UNIT REPAIR (AW30–40LE)
7. Remove the 1–2 shift valve retainer (12) with a
magnetic finger by pushing the plug.
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8. Remove the plug, spring and 1–2 shift valve.
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9. Remove the retainer (16) for low coast modulator
valve by pushing the spring with a screwdriver.
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10. Remove the spring and low coast modulator valve.
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UNIT REPAIR (AW30–40LE) 7A4–101
11. Remove the retainer (19) for accumulator control
valve with a magnetic finger by pushing the plug.
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12. Remove the plug(20), spring(21) and accumulator
control valve(22).
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13. Remove the retainer (23) for solenoid modulator
valve(25) by pushing the spring with a screwdriver.
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14. Remove the spring(24) and solenoid modulator
valve(25).
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7A4–102 UNIT REPAIR (AW30–40LE)
15. Remove the retainer(26) for cut back valve(29) with
a magnetic finger by pushing the plug.
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16. Remove the plug(27), spring(28) and cut back
valve(29).
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17. Place a mark on the top of sleeve(31) and the
retainer (30) for primary requlator valve(36) where
they are positioned.
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NOTE: When reassembling, position the retainer in the
same position.
Remove the retainer(30) with a magnetic finger by
pushing the sleeve.
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