How to Replace Mitsubishi Fuso FE140 Crank Seal?

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Tools and Materials Needed

• New crank seal
• Socket set
• Torque wrench
• Seal puller or flathead screwdriver
• Rags for cleanup
• Engine oil
• Jack and jack stands

Preparation

1. Ensure the vehicle is parked on a flat surface with the engine turned off.
2. Engage the parking brake.
3. Use the jack to lift the front of the vehicle and secure it with jack stands.
4. Remove any underbody panels if necessary to access the crank seal.

Remove the Harmonic Balancer

1. Locate the harmonic balancer on the front of the engine.
2. Using the socket set, remove the bolts securing the harmonic balancer.
3. Carefully pull off the harmonic balancer. You may use a puller if it's difficult.

Removing the Old Crank Seal

1. Once the harmonic balancer is removed, locate the crank seal.
2. Use the seal puller or a flathead screwdriver to gently pry the old crank seal out of its housing. Be cautious not to damage the surrounding area.
3. Clean the area around the crank seal housing with a rag to remove any debris or old oil.

Installing the New Crank Seal

1. Before installing the new seal, apply a thin layer of engine oil to its outer edge to help with installation.
2. Carefully align the new crank seal with the housing and press it into place evenly. Make sure it sits flush against the engine.
3. You can use a seal driver or a piece of wood to gently tap the seal into place if necessary.

Reinstalling the Harmonic Balancer

1. Position the harmonic balancer back onto the crankshaft.
2. Hand-tighten the bolts to secure the harmonic balancer temporarily.
3. Using a torque wrench, tighten the bolts to the manufacturer's specifications. Refer to the vehicle’s manual for the exact torque specification.

Final Steps

1. Reinstall any underbody panels that were removed earlier.
2. Lower the vehicle from the jack stands.
3. Start the engine and let it run for a few minutes while checking for any leaks around the new crank seal.
4. Check the oil level and add more if needed.

Conclusion

Replacing the crank seal on a Mitsubishi Fuso FE140 can be a straightforward task if done carefully. By following these steps, you can ensure that the new seal is installed correctly and functions as it should, preventing any oil leaks in the future.

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