Here's a general overview of the process, keeping in mind this is a *simplified* explanation and should not be considered a complete guide:
1. Preparation:
* Gather materials: You'll need the new convertible top (including the header bow, rear bow, and possibly other supporting bows), new weatherstripping, appropriate adhesive (likely specific to vinyl or other top material), sewing machine (if repairs are needed or you're doing custom work), various tools (screwdrivers, pliers, possibly a staple gun for certain types of attachment), and possibly replacement fasteners. Obtain a shop manual specifically for a 1970 Oldsmobile Cutlass convertible – this is essential for proper procedures and part identification.
* Clean the frame: Thoroughly clean the convertible top frame of any old adhesive, dirt, and rust. Repair or replace any damaged sections of the frame. This is crucial for proper fit and function of the new top.
* Check the mechanism: Inspect the hydraulic or manual mechanism for the top. Ensure it's working smoothly and replace or repair any faulty components before installing the new top.
2. Installation:
* Attach the header bow: This is typically the first step, attaching the bow to the windshield frame using appropriate fasteners. The shop manual will detail the correct location and attachment method.
* Attach the rear bow: This is usually the next step, securely attaching the rear bow to the car body.
* Install the top fabric: This is the most challenging part. You'll need to carefully stretch and position the top material onto the frame. Precise positioning is crucial for a proper fit and to prevent wrinkles. The shop manual will provide specific guidelines for this step. You might need to use specialized tools to help stretch and position the fabric correctly. Adhesive may be used in various areas.
* Attach the weatherstripping: Once the top is installed, carefully install new weatherstripping around the edges of the top where it meets the car body. This is crucial to prevent leaks.
* Sewing/repair: If any tears or damage occurred to the top fabric during installation (or if the fabric needs repairs beforehand), this step involves sewing to repair them. Using a specialized machine is recommended.
* Test: After installation, carefully operate the convertible top mechanism multiple times to ensure it functions correctly. Check for leaks or any areas where the top isn't properly secured.
3. Important Considerations:
* Professional Help: Re-emphasizing, this is a complex process. Unless you have significant experience with automotive upholstery, you should strongly consider hiring a professional convertible top installer. The cost of doing it wrong (ruined top, damage to car) could easily exceed the cost of professional installation.
* Shop Manual: A shop manual specific to your 1970 Oldsmobile Cutlass convertible is *essential*. This will provide detailed diagrams, instructions, and part numbers.
* Patience: Expect this to take several days, even for experienced individuals.
This is a highly condensed explanation. A proper installation requires detailed instructions and visuals provided in a shop manual. Attempting this without the proper knowledge and tools could easily lead to a poorly fitting, leaky, or even damaged top. Consider the cost of professional installation before starting this project yourself.
