Opel Frontera UBS. Service manual — part 550
7A–69
AUTOMATIC TRANSMISSION (4L30–E)
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. Install piston assembly (10) into the second clutch
drum (11).
D
Lubricate the lip seal with transmission fluid. Use
the 5–8840–2261–0 (J–23080–A) second clutch
piston installer to protect the outer piston lip seal.
NOTE: Lip of the seal should point toward front of
transmission.
D
Remove the installer.
247RS007
2. Install twenty–two piston springs (9) and spring seat
(8) on the second clutch piston (10). Place retaining
ring (7) onto spring seat.
D
Use the 5–8840–0195–0 (J–23327) compressor to
compress the piston springs.
NOTE: Do not let spring seat catch in ring groove.
D
Remove the compressor.
3. Install waved plate (6) and clutch plates (5). Start with
a steel plate and alternate with lined plates.
D
Align second clutch inner tangs.
4. Install spacer (4), with the fluted end toward clutch
plates.
5. Install retaining ring (3), ring gear (2) and retaining
ring (1).
7A–70
AUTOMATIC TRANSMISSION (4L30–E)
3–4 Accumulator Piston
Disassembled View
244RS005
Legend
(1) Snap Ring
(2) Cover
(3) Spring
(4) Piston Assembly
Disassembly
1. Install the 5–8840–2277–1 (J–38559–A) cover
compressor on adapter case.
D
Compress piston cover then remove snap ring.
242RW009
2. Install the 5–8840–2403–0 (J–41096) cover remover
and 5–8840–2266–0 (J–38584) adapter to center
hole of cover.
D
Use the 5–8840–0019–0 and 5–8840–2000–0
(J–23907) slide hammer to remove cover.
3. Remove spring and piston assembly.
242RW010
Inspection And Repair
Visual Check:
If any damage, deformation or wear is found, replace the
damaged part.
7A–71
AUTOMATIC TRANSMISSION (4L30–E)
Reassembly
1. Place the 5–8840–2264–0 (J–38553) piston fitter into
adaptor case and push the piston into position, using
suitable diameter tube.
D
Remove the piston fitter.
244RW005
2. Install spring and cover.
3. Install snap ring, using the 5–8840–2277–1
(J–38559–A) compressor tool.
D
Install snap ring in groove.
D
Remove the compressor tool.
244RW006
7A–72
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
Disassembly
1. Install the 5–8840–0195–0 (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.
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