Gearbox Jatco JF402E

The Jatco JF402E 4-speed automatic transmission was produced since 1997 and installed in various compact cars, primarily the Suzuki Wagon R and its numerous clones. Around 2000, this transmission began to be actively replaced by the new 405 model.

Specifications

Type automatic transmission
Number of gears 4
Type of drive front
Engine volume, l up to 1.2
Torque output, Nm up to 115
Recommended oil Nissan AT-Matic D Fluid
Oil capacity, liter 4.6
Replacing the oil every 50 000 km
Replacing the filter every 50 000 km
Gearbox lifespan, km ~200 000 km

Gear ratios Jatco JF402E

Using the example of a 1997 Hyundai Atos with a 0.8 liter engine:

Main 4.020
1st 2.914
2nd 1.525
3rd 1.000
4th 0.725
Reverse 2.642

Using

The transmission was installed on:

  • Suzuki Alto 5 (HA12) in 1998 – 2005;
  • Suzuki Wagon R 2 (MC21) in 1998 – 2003;
  • Suzuki Wagon R Plus 1 (MA61) in 1997 – 1999;
  • Suzuki Wagon R Plus 2 (MA63) in 1999 – 2003;
  • Hyundai Atos 1 (MX) in 1997 – 2004;
  • Daewoo Matiz 1 (M100) in 1998 – 2000;
  • Daewoo Matiz M150 in 2000 – 2005.

Disadvantages of the Jatco JF402E gearbox

  • The most common problem is rapid contamination of the oil by wear products;
  • The valve body solenoids gradually become clogged with dirt, causing jerking and pulsing;
  • A typical repair involves cleaning the transmission’s internals and replacing the lubricant;
  • The weak point here is the rear cover of the automatic transmission, which breaks down after 200,000 km.
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