AA80E Precision International Transmission parts, repair guidelines, problems, manuals
Transmission general data
| Number of gears | Transmission Type | Drive | Torque (Nm) | ATF (full capacity) L | ATF (change) L | ATF type |
|---|---|---|---|---|---|---|
| 8 | AT | RWD/AWD | 550 | 11,3 | 3,7 | Toyota WS |
What are you looking for?
Overhaul Kit | Friction Kit | Friction | Steel Plate | Steel Kit | Band | Solenoid Kit | Solenoid EPC | Solenoid TCC | Pump | Shaft | Drum | Valve body | Torque converter | Hub | Piston | Piston Kit | Planetary Gear | Filter | Gasket | Bushing | Seal | Bearing | Pressure Plate | Stator | Differential | Retainer | Inhibitor Switch | Instruction manual | TOOLS & ACCESORIES | Sensor
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Technical issues and repair guidelines
With regard to mechnical components typical problems usually occur in the bushing and the pump seal, which are the first to be affected by the torque converter (TC) lock-up wear-out and overheating. The oil leaks via the seal of pump/TC is the the first signal for diagnostics, cleaning of the valve body, and the TC repair. Further operation with such leakages may result in the necessity for the pump bushing replacement, and in some cases replacement of the pump itself.
In the electric part, the first level repair consists of the valve body cleaning and replacement of solenoids. As in many of Aisin automatic transmissions, the torque converter lock-up solenoid SLU is the first to wear out, because this solenoid operates with all contaminated and overheated oil from the worn-out torque converter. Another problematic area is the main pressure solenoid LPC (SLT), which transmits all ATF to other solenoids.
Specialists recommend to monitor closely the ATF condition in the TL-80SN transmission. In case of rapid ATF contamination after the prior partial change, it is recommended to visit the repair shop for the torque converter repair, without waiting for the friction plate wearout, that may be especially harmful for the AA80E solenoids and the valve body. It is also advisable to replace the filter in due time, and check the pan.
The design of transmission components for all RWD Aisin transmissions is considered to be "invincible", having a large structural reserve. This transmission usually operates without serious problems throughout the car lifespan. However to avoid unnecessary repair costs, car owners have to monitor the ATF state, timely visit specialists for the torque converter repair, cleaning of solenoids and the valve body.