Aisin Warner; General Motors AF13

Transmission general data

The 4-speed automatic transmission AW60-40LE was designed by Aisin Warner in 1995 for FWD vehicles (Suzuki, Opel, Daihatsu, Fiat) equipped with engines up to 1.6 liters. After testing on Suzuki Estima, this transmission was widely installed on numerous models of different brands. According to GM classification AW6040LE is known as AF13.

Technical issues and repair guidelines

The worn-out torque converter lock-up requires repair after 200-300 thousand kilometers (depending on the driving style).

In addition to the filter, during the overhaul transmission specialists usually order the following:

-Repair kit of gaskets and seals

- Complete kit of fricion plates

-For the reassembly procedure specialists also order the kit of steel discs

In many cases, the main problem lies in two burned clutch packages: Forward and Package 3-4 (friction clutches and steel discs of packages Forward and 3-4).The brake band is ordered together with the kit of friction clutches. When the burnt oil comes to the friction linings, they start operating with noticeable jerks or slippages. The kit of 4 plastic washers of supporting bearings is replaced during the overhaul of ageing transmission.With regard to electrics, typical problems occur in valve bodies. Valve body units should be reassembled and cleaned in the process of each overhaul. Transmission repair specialists also should replace the gaskets.

The solenoid “shift” (gear shifting) is frequently replaced because of the end of service lifespan. The solenoid of the torque converter lock-up is also often replaced. Together with two above mentioned solenoids specialists replace the solenoid-electric controller EPC/SLT (main pressure).The reason for premature wear-out is assumed to be a long-time operation in contaminated and overheated oil with the worn-out torque converter lock-up.

The valve body usually is quite durable, but aggressive accelerations and driving with worn-out friction clutches may bring closer the replacement time. If there is smell of burning oil, then in most cases the problem lies in packages the Forward and 3-4.

Generally, the family of automatic transmissions AW60-40LE is considered to be maintenance-friendly as the majority of 4-speed Aisin transmissions. Thus, after the diagnostics and replacement of all worn-out parts it can operate for a long period of time.