Replacing the input shaft on a Jeep Liberty or Cherokee can be a complex task that requires a good understanding of your vehicle’s drivetrain and mechanical components. Get instant access to the manual—click here for details……
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Below, I’ll provide a detailed guide to help you through the process. Make sure you have the necessary tools and safety equipment before you begin.
### Tools and Materials Needed:
1. **Tools:**
– Socket set (metric and standard)
– Wrench set
– Torque wrench
– Screwdriver set
– Pliers
– Pry bar
– Hammer
– Clutch alignment tool (if applicable)
– Jack and jack stands
– transmission jack (optional, but recommended)
2. **Materials:**
– New input shaft (specific to your Jeep model)
– New input shaft seal
– transmission fluid (for refill)
– Gasket maker or new gasket (if applicable)
– Clean rags
– Safety goggles and gloves
### Step-by-Step Process:
#### 1. **Preparation:**
– **Safety First:** Park the vehicle on a flat surface, engage the parking brake, and disconnect the negative battery terminal to prevent electrical shorts.
– **Raise the Vehicle:** Use a jack to lift the front of the vehicle and secure it with jack stands.
#### 2. **Remove the Transmission:**
– **Drain transmission Fluid:** Place a drain pan under the transmission and remove the drain plug to allow fluid to drain completely.
– **Disconnect Driveshaft:** Depending on your model, you may need to remove the rear driveshaft. Use a wrench to loosen and remove the bolts securing it to the differential and the transmission.
– **Disconnect transmission Linkage:** Remove any linkage connected to the transmission, including the shift cable and any electrical connectors.
– **Remove Crossmember:** If applicable, remove the transmission crossmember by unbolting it from the frame and transmission.
– **Support the Transmission:** Use a transmission jack or a regular jack to support the transmission.
– **Unbolt the Transmission:** Remove the bolts securing the transmission to the engine. There may be several bolts around the bell housing; ensure you remove all of them.
– **Separate transmission from Engine:** Carefully pull the transmission away from the engine. You may need to wiggle it slightly or use a pry bar to help separate it.
#### 3. **Access Input Shaft:**
– **Remove transmission Case:** Once the transmission is out, you will need to remove the transmission case. This may involve removing several bolts and possibly the tail housing.
– **Inspect Components:** Before proceeding, inspect the internal components for any additional wear or damage.
#### 4. **Replace Input Shaft:**
– **Remove Old Input Shaft:** Locate the input shaft. It is typically held in place by a retainer clip or bolt. Remove this clip/bolt and gently pull the input shaft out of the transmission.
– **Install New Input Shaft:** Take the new input shaft and lubricate the seal lightly with transmission fluid. Carefully insert the new input shaft into the transmission, ensuring it is seated correctly.
– **Reinstall Retaining Clip/Bolt:** Secure the input shaft with the retaining clip or bolt.
#### 5. **Reassemble Transmission:**
– **Reattach transmission Case:** Reinstall the transmission case halves, ensuring any gaskets or seals are correctly positioned. Use gasket maker if necessary.
– **Reinstall Tail Housing (if removed):** Replace the tail housing to complete the assembly.
#### 6. **Reinstall Transmission:**
– **Position Transmission:** Carefully lift the transmission back into place, aligning it with the engine.
– **Bolt transmission to Engine:** Reinstall all bolts securing the transmission to the engine. Torque them to the manufacturer’s specifications.
– **Reinstall Crossmember:** Attach the crossmember back to the frame
and transmission.
#### 7. **Reconnect Drive Shaft:**
– Reinstall the driveshaft, ensuring it is properly aligned and secured with bolts.
#### 8. **Reattach Linkage and Connectors:**
– Reconnect any transmission linkage, shift cables, and electrical connectors.
#### 9. **Refill transmission Fluid:**
– Replace the drain plug and refill the transmission with the appropriate type and amount of transmission fluid according to your vehicle’s specifications.
#### 10. **Final Checks:**
– **Recheck All Bolts:** Ensure all components are properly secured.
– **Reconnect Battery:** Reconnect the negative battery terminal.
– **Lower Vehicle:** Carefully remove the jack stands and lower the vehicle.
#### 11. **Test Drive:**
– Start the engine and allow it to warm up. Check for any leaks and ensure the transmission engages properly. Take the vehicle for a short test drive to confirm everything is functioning as expected.
### Important Notes:
– Always refer to your specific Jeep model’s service manual for detailed specifications and torque settings.
– If you are unsure about any step, it’s advisable to consult with a professional mechanic or refer to detailed repair guides specific to your vehicle.
– Input shaft replacement can vary significantly between models and years, so ensure that you are following the correct guide for your specific Jeep Liberty or Cherokee model.
Safety should always be your top priority when working on vehicles, so take your time and ensure you understand each step before proceeding.
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