HOW TO REPLACE HEAD GASKETS ON 6.4 POWERSTROKE (Part 1: Removal)

Introduction

This tutorial provides a step-by-step guide on how to remove the head gaskets on a 6.4 Powerstroke engine, specifically models from 2008 to 2010. Replacing head gaskets is a significant task that requires pulling the cab of the truck. Following these instructions will help ensure a successful removal process.

Step 1: Prepare for Cab Removal

Before starting the head gasket removal, you need to pull the cab. If you haven't done this yet, refer to the linked video for cab removal instructions.

• Gather necessary tools:
  • 1/2" and 3/8" torque wrenches
  • 1/2" and 3/8" impact wrenches
  • Drill and driver
• Disconnect the battery to ensure safety.
• Remove any components obstructing the cab, including:
  • The dashboard
  • Wiring harnesses
  • Fuel lines

Step 2: Remove the Cab

Follow these instructions to safely remove the cab from the chassis.

1. Lift the cab:

   • Use a hoist or an engine lift to raise the cab.
   • Ensure the area is clear of obstacles.

2. Disconnect remaining connections:

   • Check for any remaining connections such as:
     • Brake lines
     • Transmission lines
     • Any additional wiring

3. Set the cab aside:

   • Once all connections are disconnected, carefully set the cab aside in a safe location.

Step 3: Accessing the Engine

With the cab removed, you can now access the engine compartment.

• Inspect the engine area for any debris or obstructions.
• Make sure tools and parts are organized to facilitate the reassembly process later.

Step 4: Remove the Valve Covers

Before accessing the head gaskets, remove the valve covers.

1. Unbolt the valve covers:

   • Use the appropriate socket to loosen and remove the bolts securing the valve covers.

2. Lift off the covers:

   • Gently lift the valve covers off the engine, taking care not to damage the gaskets.

Step 5: Remove Cylinder Heads

Now you can begin the process of removing the cylinder heads to access the head gaskets.

1. Unbolt the cylinder heads:

   • Follow the manufacturer’s torque specification for the head bolts.
   • Loosen bolts in the proper sequence to prevent warping.

2. Lift off the heads:

   • Carefully lift the cylinder heads off the engine block.
   • Use care to avoid damaging the mating surfaces.

Conclusion

You have successfully removed the head gaskets from a 6.4 Powerstroke engine. The next steps involve cleaning the surface of the engine block and preparing for the installation of new head gaskets and cylinder heads. For further assistance, watch the next video on installing the 6.4 heads. Always remember to double-check your work and refer to the vehicle's service manual for specific torque specifications and procedures.