Difference between revisions of "KM175"
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Revision as of 01:24, 11 January 2010
The KM175 (also known as the F4A22) is a 4 speed electronic automatic transaxle which was fitted to TM and carby TN models.
Two versions of the KM175 were used in Magnas - the KM175-1 in TM and TN sedans (sometimes referred to as KM175) and the KM175-2 in TN wagons. The only difference is the gear ratios.
The torque converter includes a damper clutch which causes the converter to lock at low vehicle speeds. The operation of the clutch is controlled by the Transaxle Control Unit.
Gear selection is electronic and is controlled by solenoids which are activated by the Transaxle Control Unit. The TCU uses information from sensors which provide information on vehicle speed, throttle position, engine coolant temperature, gear lever position, engine speed, overdrive switch and kickdown drum speed.
The KM175 was superseeded in the TP model after MMAL discovered that it commonly failed in operation due to the large amount of torque the Astron II produces.
Technical data
| Lubricant | Mitsubishi ELC-4 ATF, Castrol TQM-SP, Valvoline Type M-II Special |
| Capacity | 5.8 Litres |
| Torque Convertor Stall Speed | 2200 - 2600 rpm |
| GEAR RATIOS KM175-1 | |
| Final Drive | 3.665 |
| 1st | 2.846 |
| 2nd | 1.581 |
| 3rd | 1.000 |
| 4th | 0.685 |
| Reverse | 2.176 |
| GEAR RATIOS KM175-2 | |
| Final Drive | 3.986 |
| 1st | 2.551 |
| 2nd | 1.488 |
| 3rd | 1.000 |
| 4th | 0.685 |
| Reverse | 2.176 |
