AA80F Automatic Transmission System
AA80F AUTOMATIC TRANSMISSION: AUTOMATIC TRANSMISSION SYSTEM: PRECAUTION
NOTICE:
* When disconnecting the cable, some systems need to be initialized after the cable is reconnected Testing and Inspection.
* If any parts are replaced, perform the following as necessary referring to the table below.
HINT
* *1: Reset Memory cannot be completed by only reconnecting the cable to the negative (-) battery terminal.
* *2: When "Set Transmission Compensation Code" is performed, "Reset Memory" is automatically completed.
* *3: Compensation code of the new automatic transmission.
* *4: Read the compensation code from the previous TCM, and then transfer it to the new TCM.
* *5: Set the transmission compensation code of the current automatic transmission.
* Registration of the transmission compensation code Registration.
* Learning by driving (Road Test) Initialization.
* Reset Memory Initialization.
NOTICE:
Reset Memory cannot be completed by only reconnecting the cable to the negative (-) battery terminal.
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.
* The component groups are inspected and repaired from the converter housing side.
* 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.
* When disassembling a valve body, be sure to match each valve with its corresponding spring.
* 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.