TW40E NAK 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 |
|---|---|---|---|---|---|---|
| 4 | AT | RWD/AWD | 120 | 3,7 | 2 | Dexron III |
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
For reassembly of the A174 unit repair specialists order the repair kit of gaskets and seals, clean the valve body and replace spare parts, and rebuild the torque converter. Transmission experts assume that it is necessary to replace all friction clutches (soaked with oil combustion products) in transmissions operating with burnt oil.
The valve body design of this transmission includes "On-Off" solenoids (responsible for gear shifting and the torque converter lock-up operation), and a big EPC solenoid. Solenoids are adjusted quite accurately and ensure the torque converter actuation without a hard slippage. Therefore the torque converter does not overheat or smudge solenoids too much, allowing solenoids to operate for quite a long time. Sometimes problems occur in wiring of solenoids.
In the process of complete reassembly of А174/TW-40E, transmission specialists replace the following repair kits with the aim to prolong the operation period of the unit:
- Kit of steel discs TW-40E
- Kit of traversing pistons (6 pieces)