Last Modified: 04-05-2023 |
6.11:8.1.0 |
Doc ID: RM10000000101KY |
Model Year Start: 2017 |
Model: Sienna |
Prod Date Range: [08/2016 -
] |
Title: UA80F (AUTOMATIC TRANSMISSION / TRANSAXLE): AUTOMATIC TRANSAXLE SYSTEM: PRECAUTION; 2017 - 2020 MY Sienna [08/2016 - ] |
PRECAUTION
IGNITION SWITCH EXPRESSION
HINT:
The type of ignition switch used on this model differs depending on the specifications of the vehicle. The expressions listed in the table below are used in this section.
Expression
|
Ignition Switch (Position)
|
Engine Switch (Condition)
|
Ignition Switch off
|
LOCK
|
Off (Lock)
|
Ignition Switch ACC
|
ACC
|
On (ACC)
|
Ignition Switch ON
|
ON
|
On (IG)
|
Engine Start
|
START
|
On (Start)
|
PRECAUTION
CAUTION:
When using compressed air, always aim away from yourself to prevent Automatic Transmission Fluid (ATF) or kerosene from spraying on your face.
NOTICE:
-
The automatic transmission is composed of precision-made parts, necessitating careful inspection before reassembly because even a small nick could cause fluid leakage or affect performance.
-
The procedures are organized so that you work on only one component group at a time. This will help avoid confusion with similar-looking parts of different sub-assemblies being on your workbench at the same time.
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The component groups are inspected and repaired from the converter housing side.
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Whenever possible, complete the inspection, repair and reassembly before proceeding to the next component group. If a defect is found in a certain component group during reassembly, inspect and repair this group immediately. If a component group cannot be assembled because parts are being ordered, be sure to keep all parts of the group in a separate container while proceeding with disassembly, inspection, repair and reassembly of other component groups.
-
Use of Toyota Genuine ATF WS is recommended.
-
All disassembled parts should be washed clean, and compressed air should be blown through any fluid passages and holes.
-
Dry all parts with compressed air. Never use cloth.
-
The recommended ATF or kerosene should be used for cleaning.
-
After cleaning, the parts should be arranged in the order they were removed for efficient inspection, repairs and reassembly.
-
New discs for the brakes and clutches that will be used for replacement must be soaked in ATF for at least 15 minutes before reassembly.
-
All oil seal rings, clutch discs, clutch plates, rotating parts, and sliding surfaces should be coated with ATF prior to reassembly.
-
All old gaskets and rubber O-rings must be replaced.
-
Do not apply adhesive cement to gaskets and similar parts.
-
Make sure that the ends of the snap rings are not aligned with any cutouts. Also make sure that snap rings are correctly installed into the grooves.
-
If a worn bushing is to be replaced, the sub-assembly containing the bushing must also be replaced.
-
Check the thrust bearings and races for wear or damage. Replace them if necessary.
-
Use petroleum jelly to keep parts in place.
-
When working with seal packing material, the following must be observed:
-
Using a razor blade and a gasket scraper, remove all the old seal packing material from the gasket surface.
-
Thoroughly clean all components to remove any loose material.
-
Clean both sealing surfaces with a non-residue solvent.
-
Parts must be reassembled within 10 minutes of application. Otherwise, the seal packing material must be removed and reapplied.
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