Here's a general outline of the process. This is NOT a comprehensive guide, and specific steps may vary slightly depending on your truck's configuration:
1. Preparation:
* Disconnect the battery's negative terminal. This is crucial to prevent electrical shorts.
* Gather your tools: You'll need a small flathead screwdriver, a small Phillips head screwdriver, possibly a security bit screwdriver (depending on the type of screws), and potentially a retaining clip removal tool. You might also need needle-nose pliers.
* Consult a repair manual: A Chilton's or Haynes repair manual specific to your 1986 Ford F-150 is highly recommended. These manuals provide detailed diagrams and instructions, which are essential for this task.
2. Steering Wheel Removal (Possibly):
* Depending on your truck, you might need to remove the steering wheel to access the ignition cylinder. This usually involves removing the steering wheel nut and then using a puller to remove the wheel. Again, your repair manual will provide the exact steps. This step is NOT always necessary, but often is.
3. Accessing the Ignition Cylinder:
* Once the steering wheel is (possibly) removed, you should have access to the ignition lock cylinder housing. This is usually located behind the steering column cover. You may need to remove the steering column shroud or bezel (plastic cover) to gain better access. The shroud is usually held in place by screws.
4. Removing the Cylinder:
* Locate the retaining clip or screws: The ignition cylinder is typically held in place by a retaining clip or a couple of small screws. These are often difficult to see and access.
* Carefully remove the retaining clip or screws: Use the appropriate screwdriver to remove these fasteners. Be very gentle to avoid damaging them or the surrounding components.
* Remove the ignition cylinder: Once the retaining clip or screws are removed, the ignition cylinder should be able to be pulled out. There might be some slight resistance. You might need to gently wiggle it back and forth to free it.
5. Reinstallation (Reverse of Removal):
* Reinstallation is simply the reverse of the removal process. Make sure everything is properly seated and secured before reconnecting the battery.
Important Considerations:
* Key position: Ensure the key is in the "OFF" position before starting any disassembly.
* Column shift: If you have a column-shifted automatic transmission, you'll need to ensure it is in Park before attempting to remove the steering wheel.
* Wiring: Be very cautious not to damage any wiring harness during the process.
* Parts: If any parts are broken or damaged during removal, replace them with OEM parts whenever possible.
Disclaimer: This information is for general guidance only. Incorrectly performing this procedure can result in damage to your vehicle. If you are not comfortable performing this repair yourself, it is strongly recommended that you take your vehicle to a qualified mechanic. They have the expertise and tools to do this safely and correctly.