Workshop Manual

7A–54
AUTOMATIC TRANSMISSION (4L30–E)
Transmission (4L30–E)
Disassembly
NOTE: During the disassembly and reassembly, perform
the following:
B Wash each part thoroughly, and blow air through each
oil passage and groove to eliminate blockage.
B Seal rings, roll pins, and gaskets should be replaced.
B When assembling the components, apply
DEXRON–III Automatic Transmission Fluid (ATF)
to each seal, rotating part, and sliding part.
B Do not dip part facings, such as clutch or brake drive
plates, in cleaner when washing it.
Also, always coat parts with new ATF two or three
times after cleaning with solvent.
1.Remove torque converter (1).
B Drain fluid from torque converter.
B Attach J–8763–02 holding fixture to the
transmission and set it on J–3289–20 holding
fixture base.
NOTE: Do not overtighten the tool, as case damage may
result.
420RW021
2.Remove O–ring (2) from turbine shaft.
3.Remove two 10mm mode switch screws, selector
lever nut, cover, and mode switch (3).
4.Remove twelve 10mm adapter case oil pan (4) fixing
screws, adapter oil pan, and gasket.
5.Disconnect electrical wiring connections (5) from
solenoids and 4 way connector of adapter case. Pull
on connectors only, not on wiring harness.
6.Remove seven 13mm adapter case valve body (6)
fixing screws, adapter case valve body assembly,
transfer plate, and two gaskets.
B Remove wiring harness and 4 way connector.
7.Remove sixteen 10mm main case oil pan (7) fixing
screws, main oil pan, magnet, and gasket.
8.Remove three 13mm oil filter (8) fixing screws and oil
filter.
9.Remove two 13mm manual detent (9) fixing screws,
roller and spring, and manual detent.
10.Disconnect wiring harness assembly (10) from band
apply solenoid, shift solenoids, and main case 7 way
connector.
Pull on connectors only, not on wiring harness.
11.Remove four 13mm servo cover (11) fixing screws,
servo cover, and gasket.
12.Remove seven 13mm valve body screws from main
case.
B Remove wiring harness assembly (5) from the
adapter case side.
B Remove main valve body assembly (12) with
manual valve link and transfer plate. Note the
position of the link (long end into valve, short end
into range selector lever).
B Remove 7 way connector.
B Remove gasket transfer plate from main case.