Opel Frontera UE. Manual - part 406

7A–68

AUTOMATIC TRANSMISSION (4L30–E)

Adapter Case Valve Body

Disassembled View

243RW001

Legend

(1) Converter Clutch Solenoid Assembly
(2) Retainer
(3) Force Motor Solenoid
(4) Retainer
(5) Plug
(6) 3/4 Accumulator Valve
(7) 3/4 Accumulator Control Valve

(8) Spring
(9) Retaining Ring

(10) Feed Iimit Valve

(11) Plug Retainer

(12)

O-ring

(13) Plug
(14) Force Motor Screen Assembly
(15) Adapter Case Valve Body

Disassembly

1. Remove 11mm bolt from valve body.

D

Remove converter control solenoid assembly  (1).

2. Remove 11mm bolt and retainer (2) from valve body.

D

Remove force motor solenoid (3).

3. Remove retainer (4), plug (5), 3/4 accumulator valve

(6), and 3/4 accumulator control valve (7)

4. Remove spring (8), retaining ring (9), and feed limit

valve (10). 

5. Remove plug retainer (11), O-ring (12), plug (13), and

force motor screen assembly (14). 

D

Use 5 mm bolt to pull plug.

Inspection and Repair

Inspect for the following, and replace any damaged or
worn parts:

1. Damage or wear to each valve.
2. Damage in oil passeges.
3. Cracks or damage to valve body.
4. Valve operations.
5. Spring fatigue.

Reassembly

1. Install force motor screen assembly (14), plug (13),

O-ring (12), and plug retainer (11).

2. Install feed limit valve (10), retaining ring (9), and

spring (8).

7A–69

AUTOMATIC TRANSMISSION (4L30–E)

3. Install 3/4 accumulator control valve (7), 3/4

accumulator valve (6), plug (5), and retainer (4).

4. Install force motor solenoid (3).

D

Place solenoid terminals pointing towards mating
face.

D

Install retainer (2) and bolt. 

Torque: 10 N

•

m (87 lb in)

5. Install converter clutch solenoid assembly with two

O-rings (1) to valve body.

D

Install bolt.

Torque: 10 N

•

m (87 lb in)

Third Clutch and Sprag Unit

Disassembled View

248RW001

Legend

(1) Retaining Ring
(2) Input Sun Gear and Sprag Unit Assembly
(3) Retaining Washer
(4) Bearing

(5) Thrust Washer
(6) Clutch Plates
(7) Third Clutch Spring Cushion Plate
(8) Third Clutch Drum Assembly

Disassembly

1. Place the third clutch drum and intermediate shaft

assembly upright, using the overdrive internal gear as
a support.

2. Locate the ends of the retaining ring. Depress one

end of the ring using a small screwdriver instead of
the depressor handle provided with the tool
J-38450-A. Slide one blade down between the third
clutch drum and the retaining ring.

3. Remove a screwdriver and repeat this step for the

other end of retaining ring.

4. Install the remaining four blades approximately (five)

notches apart using a screwdriver to depress the
retaining ring.

5. Pull up on input sun gear and sprag unit assembly (1

and 2) to release the retaining ring from third clutch
drum assembly (8).

6. Remove the tool blades.

248RX001

7A–70

AUTOMATIC TRANSMISSION (4L30–E)

7. Remove retaining washer (3), bearing (4), thrust

washer (5), and clutch plates (6 and 7) from the third
clutch drum assembly (8).

Inspection and Repair

Visual Check:

If any damage, deformation or wear is found, replace the
damaged part.

Reassembly

1. Place third clutch drum and intermediate shaft

assembly upright, using the overdrive internal gear as
a support.

2. Install third clutch spring cushion plate (7), bevel face

down.

3. Install third clutch plates (6) into third clutch drum

assembly (8).  Start with the steel clutch plate and
alternate with lined plates.

4. Install thrust washer (5), bearing (4) and retaining

washer (3). 

5. Fully engage the hub spline of the input sun gear and

sprag unit assembly (2) into the third clutch inner
tangs.

D

Simultaneously rotate the outer sprag race to
engage into the third clutch drum assembly (8).

6. Place J-38450-A blades between the retaining ring

and the third clutch drum apporximately (five)
notches apart, and one blade at each end of the
retaining ring (1). Push down on sprag assembly until
the assembly is seated into the third clutch drum
assembly (8).

7. Remove the tool blades and engage retaining ring

into groove of third clutch drum.

248RX002

Third Clutch

Disassembled View

248RS006

Legend

(1) Retaining Ring
(2) Spring Seat

(3) Springs
(4) Piston Assembly
(5) Third Clutch Drum

7A–71

AUTOMATIC TRANSMISSION (4L30–E)

Disassemble

1. Compress spring seat using the J–23075 spring

compressor and J–23075–12 adapter tool.

NOTE: Do not overstress the springs and seat. This will
cause damage to the spring seat.

D

Remove the tool.

D

Remove retaining ring (1).

248RS007

2. Release the spring seat (2).

NOTE: Do not let the spring seat catch in the ring groove.

D

Remove spring seat (2) and springs (3).

3. Remove piston assembly (4) from third clutch drum

(5).

Inspection and Repair

Visual check:

If any damage, deformation or wear is found, replace the
damaged part.

Operation check:

Shake the piston and listen for check ball movement.
Movement indicates proper check ball operation.
Replace the piston if the check ball is missing or falls out.

Reassembly

1. The lip of the piston seal must point toward the front of

the transmission.  Lubricate the seal lip with
transmission fluid.

D

Install piston assembly (4) into the third clutch drum
(5).  Use the J–23084 third clutch piston installer to
protect the outer seal during installation.

D

Remove the seal installer.

248RS008

2. Install twelve springs (3) and spring seat (2). 
3. Place retaining ring (1) onto spring seat.

D

Compress the piston springs, using the J–23075
piston spring compressor and J–23075–12
adapter.

CAUTION: Do not overstress the springs and seat.
Do not let the spring seat catch in the ring groove.
This may cause damage to the spring seat.

D

Install spring seat retaining ring (1).

D

Remove the piston spring compressor and adapter.