Opel Frontera UBS. Manual - part 549

7A–65

AUTOMATIC TRANSMISSION (4L30–E)

Third Clutch

Disassembled View

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Legend

(1) Retaining Ring
(2) Spring Seat

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

Disassemble

1. Compress spring seat using the 5–8840–0501–0

(J–23075) spring compressor and 5–8840–2259–0
(J–23075–12) adapter tool.

NOTE: Do not over–stress the springs and seat. This will
cause damage to the spring seat.

D

Remove the tool.

D

Remove retaining ring (1).

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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
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 5–8840–2260–0 (J–23084) third clutch
piston installer to protect the outer seal during
installation.

D

Remove the seal installer.

7A–66

AUTOMATIC TRANSMISSION (4L30–E)

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

D

Compress the piston springs, using the
5–8840–0501–0 (J–23075) piston spring
compressor and 5–8840–2259–0 (J–23075–12)
adapter.

CAUTION: Do not over stress 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.

7A–67

AUTOMATIC TRANSMISSION (4L30–E)

Sprag Unit

Disassembled View

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Legend

(1) Retaining Ring
(2) Sprag Outer Race
(3) Ring

(4) Sprag Assembly
(5) Ring
(6) Third Clutch Hub and Sun Gear Assembly

Disassembly

1. Remove the sprag outer race, retaining ring, and

sprag assembly from the third clutch hub and sun
gear assembly.

2. Remove the rings and sprag assembly from the sprag

outer race.

Inspection And Repair

Visual Check:

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

Reassembly

NOTE: Flared shoulder of the sprag cage faces the sun
gear. This procedure must be followed exactly to be sure
that the sprag assembly is installed properly.

1. Install rings and sprag assembly onto the third clutch

hub and sun gear.

2. Install sprag outer race and retaining ring assembly

over the sprag cage assembly.

D

Place third clutch hub and sun gear assembly on a
flat surface, sun gear facing up.  Place sprag outer
race and sprag assembly over the sun gear
assembly, push down and turn the input sun
counterclockwise at the same time. 

NOTE: Check correct rotation by holding the sun gear in
your left hand and turning the outer race.  The outer sprag
race should turn freely towards you and should lock
turning away from you.

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7A–68

AUTOMATIC TRANSMISSION (4L30–E)

Second Clutch

Disassembled View

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Legend

(1) Retaining Ring
(2) Ring Gear
(3) Retaining Ring
(4) Spacer
(5) Clutch Plates

(6) Waved Washer
(7) Retaining Ring
(8) Spring Seat
(9) Springs

(10) Piston Assembly

(11) Second Clutch Drum

Disassembly

1. Remove retaining ring (1) from second clutch drum

(11). 

2. Remove ring gear (2), retaining ring (3), and spacer

(4). 

3. Remove clutch plates (5) and waved washer (6). 
4. Remove retaining ring (7) using 5–8840–0195–0

(J–23327) compressor to compress the spring seat
(8).

5. Remove spring seat (8), springs (9) and piston

assembly (10) from second clutch drum (11). 

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