Gearbox Aisin AW31-80LE

The 4-speed automatic transmission Aisin 31-80LE was produced at a Japanese company from 1993 to 2007 and was installed on all-wheel drive versions of Toyota Progres, Cresta, Mark II and Crown under the symbol A340H. A reinforced modification of this automatic transmission for V8 engines is known under the symbol AW31-81LE and A341H.

AW30 family: AW30‑40LE, AW30‑40LS, AW30‑41LS, AW30‑43LE, AW31‑80LE.

Specifications

Production years 1993 – 2007
Type automatic transmission
Number of gears 4
Type of drive all wheel
Engine volume, l up to 3.0
Torque output, Nm up to 300
Recommended oil Toyota ATF Type T-IV
Oil capacity, liter 8.3
Replacing the oil every 60,000 km
Replacing the filter every 60,000 km
Gearbox lifespan, km ~400 000
Weight, kg 79

Gear ratios Aisin AW31-80LE

Using the example of a Toyota Progres 2003 with a 2.5 liter engine:

Main 4.3
1st 2.804
2nd 1.531
3rd 1.000
4th 0.705
Reverse 2.393

The transmission was installed on:

  • Toyota Altezza 1 (XE10) in 2000 – 2005;
  • Toyota Brevis 1 (G10) in 2001 – 2007;
  • Toyota Chaser 5 (X90) in 1993 – 1996; Chaser 6 (X100) in 1996 – 2001;
  • Toyota Cresta 4 (X90) in 1993 – 1996; Cresta 5 (X100) in 1996 – 2001;
  • Toyota Crown 10 (S150) in 1995 – 2001; Crown 11 (S170) in 1999 – 2003;
  • Toyota Mark II 7 (X90) in 1993 – 1996; Mark II 8 (X100) in 1996 – 2000; Mark II 9 (X110) in 2000 – 2004;
  • Toyota Mark II Blit 1 (X110) in 2002 – 2007;
  • Toyota Progres 1 (G10) in 1998 – 2007;
  • Toyota Verossa 1 (X110) in 2001 – 2004.

Disadvantages of the AW31-80LE gearbox

  • This is a completely reliable automatic transmission, but it is installed on charged modifications of models;
  • Therefore, with excessively active use, the torque converter clutch quickly wears out;
  • And then the valve body becomes clogged with this dirt and shocks appear when switching;
  • If you drive without paying attention to the shocks, you will break the oil pump bushing;
  • Then lubricant leaks will begin, and the planetary mechanism is afraid of low oil levels.

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