C. Modification of 2ND Bow Drive Link

On some cars the second bow may not retract correctly when the top is lowered, resulting in deformation of components in the top mechanism. To counteract this, a mechanical actuating linkage system for the second bow has been introduced on the left-hand side.

Parts:
Intermediate linkage set 74 97 480
Consisting of:
Intermediate link (1), Bushing (3), Washer, black plastic (3), Trim cap (3), Screw (3)

Drive link set 47 67 513
Consisting of:
Threaded rod (1), Auxiliary link (1), Screw (3), Bushing, black (3), Bushing, yellow (1)

Thread locking adhesive (50 ml) 74 96 268 (Equivalent is Loctite 242 Blue)

Action:

Left-hand side:

To remove:





1. Remove the screw securing the threaded rod to the intermediate link. Measure the distance between the center of screw hole D (see Figure) and the bottom edge E of the second bow (see Figure 3). Make a note of this distance and remove the threaded rod.

2. Remove the intermediate link.

Important
Carefully center the screw in the bronze bushing.





3. Fit the intermediate link, making sure that the elastic strap passes over it. See inset, Figure 4.

4. Screw the threaded rod into the second bow until the distance between D and E is the same as it was when the rod was removed.

5. Fit the threaded rod in the intermediate link by means of black bushing B.

6. Fit the auxiliary link as shown in Figure 4 (C is a black bushing and A is a yellow one).

Tightening torques:

Screws F = 52.8 in.lbs. (6 Nm)
Screws G = 157.2 in.lbs. (18 Nm)

Do NOT overtighten or binding of the linkage can occur. Let Loctite secure the screw.

Right-hand side:





1. Check the color of bushing H. If it is black, nothing further need be done. If it is white, proceed to point 2.

2. Undo the screw securing the threaded rod to the link.

3. Change the old bushing for a black one (H) in the set of spare parts.

4. Apply thread locking adhesive, P/N 74 96 268 (or Loctite 242 blue), to the screw and screw the threaded rod to the link.

Tightening torque: 52.8 in.lbs. (6 Nm).

Too much Loctite can flow into the bushing and restrict movement.