Repairing the torque converter clutch (TCC) on a Mitsubishi Galant involves several steps, including accessing the transmission components, diagnosing the issue, and performing the necessary repairs or replacements. more details on the download manual click here…..
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Below is a detailed guide, including descriptions of the components involved and the steps required for this repair.
### Tools and Materials Needed
1. **Tools:**
– Socket set (metric)
– Wrench set
– Torque wrench
– Screwdrivers (flathead and Phillips)
– Pliers
– Transmission jack or floor jack
– Jack stands
– Brake cleaner
– Gasket scraper
– Oil catch pan
2. **Materials:**
– Replacement torque converter clutch (if necessary)
– Transmission fluid
– Gasket or sealant (if applicable)
– O-rings or gaskets for the transmission pan
– New filter (if replacing)
### Components Involved
1. **Torque Converter:**
– A hydraulic device that transmits power from the engine to the transmission. The torque converter has a lock-up clutch that engages at higher speeds to improve fuel efficiency.
2. **Torque Converter Clutch (TCC):**
– A component inside the torque converter that locks the converter to the engine at specific speeds to eliminate slippage and improve fuel economy.
3. **Transmission:**
– The assembly that includes the gearbox, which transmits power to the wheels. It houses the torque converter and TCC.
4. **Transmission Fluid:**
– A specialized fluid that lubricates and cools the transmission components and allows for hydraulic actuation.
### Steps for Repair
#### 1. Safety First
– Park the vehicle on a level surface, engage the parking brake, and disconnect the negative battery terminal to prevent electrical shorts.
#### 2. Access the Transmission
– **Lift the Vehicle:**
– Use a floor jack to lift the front of the car and secure it with jack stands.
– **Remove the Underbody Shield (if applicable):**
– Use a socket wrench to remove any bolts securing the underbody shield to access the transmission area.
#### 3. Drain the Transmission Fluid
– **Position the Oil Catch Pan:**
– Place the catch pan under the transmission pan.
– **Remove the Transmission Pan Bolts:**
– using a socket wrench, remove the bolts securing the transmission pan. Carefully pry the pan loose, allowing the fluid to drain into the catch pan.
#### 4. Remove the Transmission Pan and Filter
– **Clean the Pan:**
– After draining, clean the transmission pan with brake cleaner and a rag.
– **Remove the Old Filter:**
– Unscrew the filter from the transmission. Be careful not to let debris fall into the transmission.
#### 5. Access the Torque Converter
– **Remove the Bellhousing Bolts:**
– Depending on the design, you may need to unbolt the transmission from the engine. this will require removing the bellhousing bolts.
– **Disconnect the Torque Converter:**
– Rotate the engine (use a socket on the crankshaft pulley bolt) to access the torque converter bolts. Remove these to free the torque converter from the flexplate.
#### 6. Inspect the Torque Converter Clutch
– **Check for Damage:**
– Inspect the TCC for wear or damage. If the clutch material is worn or if the clutch is not engaging/disengaging properly, it may need to be replaced.
– **Replacement (if necessary):**
– If the clutch is damaged, remove it according to the manufacturer’s specifications and replace it with a new one.
#### 7. Reassemble the Components
– **Reinstall the Torque Converter:**
– Position the torque converter back onto the engine, ensuring it is properly seated.
– **Reattach the Bellhousing:**
– Reinstall the bellhousing bolts
and torque them to the manufacturer’s specifications.
#### 8. Reinstall the Transmission Pan and Filter
– **Install the New Filter:**
– Place the new filter in position and secure it.
– **Reattach the Transmission Pan:**
– Apply a new gasket or sealant to the transmission pan and reinstall it, torquing the bolts to specifications.
#### 9. Refill the Transmission Fluid
– **Add New Fluid:**
– using a funnel, pour the new transmission fluid into the dipstick tube. Check the owner’s manual for the correct type and amount of fluid.
#### 10. Test the Repair
– **Reconnect the Battery:**
– Reconnect the negative battery terminal.
– **Start the Engine:**
– Start the engine and let it idle. Check for any leaks around the transmission and torque converter.
– **Take a Test Drive:**
– Drive the vehicle to ensure that the torque converter clutch is functioning properly and that there are no transmission issues.
### Conclusion
Repairing the torque converter clutch on a mitsubishi Galant requires careful attention to detail and a thorough understanding of the transmission system. Always refer to the vehicle’s service manual for specific torque specifications and procedures related to your particular model year. If you’re unsure about any aspect of the repair, it’s advisable to seek assistance from a professional mechanic.
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