Opel Frontera UE. Manual - part 408

7A–76

AUTOMATIC TRANSMISSION (4L30–E)

Reassembly

1. Place the J–38553 piston fitter into adaptor case and

push the piston into position, using suitable diameter
tube.

D

Remove the piston fitter.

244RS006

2. Install spring and cover.
3. Install snap ring, using the J–38559–A compressor

tool.

D

Install snap ring in groove.

D

Remove the compressor tool.

242RS007

7A–77

AUTOMATIC TRANSMISSION (4L30–E)

Reverse Clutch Piston and Center Support

Disassembled View

242RS006

Legend

(1) Retaining Ring
(2) Spring Seat
(3) Springs
(4) Piston Assembly
(5) Center Support
(6) Gasket

(7) Transfer Plate
(8) Gasket
(9) Restrictor

(10) Retainer Plate

(11) Plug

(12) Spring
(13) Overrun Lock Out Valve

7A–78

AUTOMATIC TRANSMISSION (4L30–E)

Disassembly

1. Install the J–23327 compressor tool on spring seat,

then compress the spring seat.

D

Remove retaining ring (1).

NOTE: Do not over-stress the springs and seat, as this
will cause damage to the spring seat.

D

Remove the compressor tool.

247RS008

2. Remove spring seat (2) and springs (3). 
3. Remove piston assembly (4). 
4. Remove 8 bolts from center support (5), then remove

center support (5) from adapter case. 

5. Remove gasket transfer plate/outer support (6),

center support transfer plate (7), and gasket transfer
plate/adapter case (8).

6. Remove restrictor (9) from adapter case housing. 
7. Remove retainer plate (10), plug (11), spring (12), and

overrun lock out valve (13) from center support (5). 

Inspection and Repair

Visual Check:

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

Reassembly

1. Install overrun lock out valve (13) and spring (12) to

center support.

NOTE: Ensure correct assembly of valve. The spring
should be located over the long small diameter end.

2. Install plug (11) and retainer plate (10). 
3. Place restrictor (9) in the lube overdrive channel in the

adapter case housing.

242RS005

4. Install gasket transfer plate/adapter case (8), center

support transfer plate (7), and gasket transfer
plate/center support (6). 

5. Install center support (5) with 8 bolts.

Torque : 25 N

•

m (18 lb ft)

6. Install piston assembly (4) into center support (5). 
7. Install twenty four springs (3), spring seat (2), and

retaining ring (1).

D

Install the J–23327 compressor and compress
spring seat (2) and springs (3), then seat snap ring
(1) in groove.

D

Remove the tool.

7A–79

AUTOMATIC TRANSMISSION (4L30–E)

Overrun Clutch and Turbine Shaft

Disassembled View

252RW005

Legend

(1) Snap Ring
(2) Overdrive Carrier Assembly
(3) Sun Gear
(4) Turbine Shaft
(5) Snap Ring
(6) Backing Plate
(7) Clutch Plates

(8) Snap Ring
(9) Overrun Roller Clutch Cam

(10) Roller Clutch Assembly

(11) Overrun Clutch Release Spring Retainer

(12) Diaphragm Spring
(13) Piston Assembly
(14) Overrun Clutch Drum
(15) Turbine Shaft Seal Rings