Repairing the automatic clutch system on a Mitsubishi Diamante LS Sedan can be a complex process, as it involves understanding both the vehicle’s transmission system and the specific components involved in the automatic clutch mechanism. click here for more details on the download manual…..

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It’s important to note that the Mitsubishi Diamante is typically equipped with an automatic transmission that may not have a traditional clutch system as found in manual vehicles. Instead, it uses a torque converter for power transfer.

However, if you are referring to issues related to the automatic transmission or the specific components that might be causing clutch-like symptoms, here’s a detailed guide on how to approach the repair. Always consult a repair manual specific to your vehicle for exact specifications and procedures.

### Tools and Equipment Needed
1. **Basic Hand Tools**: Socket set, wrenches, screwdrivers (Phillips and flathead).
2. **Torque Wrench**: For properly tightening bolts to specification.
3. **Transmission Jack**: To safely lower and raise the transmission.
4. **Fluid Catch Pan**: To catch any transmission fluid during the repair.
5. **Replacement Parts**: Depending on the diagnosis, this may include:
– New transmission fluid
– Gaskets and seals
– Transmission filter
– Clutch packs (if applicable)
– pump assembly (if needed)
6. **Safety Equipment**: Gloves, goggles, and a mechanic’s creeper.

### Steps to Repair the Automatic Transmission (Clutch-like Issues)

#### 1. **Diagnosis**
– Before starting any disassembly, identify the symptoms. Common issues may include slipping, hard shifting, or strange noises. Use an OBD-II scanner to check for any error codes.

#### 2. **Preparation**
– park the vehicle on a level surface and engage the parking brake.
– Disconnect the negative battery terminal to prevent any electrical issues.

#### 3. **Fluid Drainage**
– Place the fluid catch pan under the transmission pan.
– Remove the transmission pan bolts and carefully detach the pan. Allow any fluid to drain completely.

#### 4. **Filter Replacement**
– Remove the old transmission filter. This may involve unbolting it from the transmission case.
– Clean the mating surface to ensure a good seal for the new filter.
– Install the new filter and ensure it is securely fastened.

#### 5. **Inspect Clutch Packs (if applicable)**
– If the issue persists or if you suspect a problem with the clutch packs, you may need to access the transmission internals:
– Remove the valve body (requires unbolting and may need to remove the solenoids).
– Inspect the clutch packs for wear. Look for burnt or discolored plates.
– Replace any damaged clutch packs as necessary.

#### 6. **Inspect and Replace Gaskets and Seals**
– Check all gaskets and seals for signs of wear or damage. Replace any that are leaking or worn.
– Apply a thin layer of transmission assembly lubricant to new gaskets before installation.

#### 7. **Reassembly**
– Reattach the valve body and ensure all bolts are torqued to the manufacturer’s specifications.
– Reattach the transmission pan and torque the bolts in a crisscross pattern to ensure even pressure.
– Refill the transmission with the appropriate type and amount of transmission fluid using a funnel through the dipstick tube.

#### 8. **Testing**
– Reconnect the negative battery terminal.
– Start the vehicle and allow it to reach operating temperature.
– Check for leaks and ensure the transmission shifts smoothly through all gears.

#### 9. **Final Inspection**
– Take the vehicle for a test drive to ensure that the clutch-like symptoms have been resolved.
– Monitor the transmission fluid level again after the test drive and top off if necessary.

### Important Notes
– **Safety First**: Always work in a well-ventilated area and use safety equipment.
– **Consult Manual**: specific torque specifications and part numbers can be found in the Mitsubishi Diamante service manual.
– **Professional Help**: If you’re not comfortable performing this repair, consider seeking help from a certified mechanic, especially for complex transmission issues.

This guide should provide a comprehensive overview of the process involved in addressing issues that may involve the automatic transmission system in a Mitsubishi Diamante LS Sedan.