Round object with wing nut. Be careful not to damage gasket. Easy task!
1979
To jumpstart a 1975 Mercedes 450SL, connect the positive (red) cable to the positive terminal of the dead battery and the other end to the positive terminal of the working battery. Then, connect the negative (black) cable to the negative terminal of the working battery and attach the other end to a grounded metal surface on the engine block or chassis of the 450SL, away from the battery. This setup helps prevent sparks near the dead battery. Finally, start the working vehicle, then the Mercedes.
The fuse box is located on the right side of the passenger leg area. You'll see a little square panel that pops off. In other words...when you're sitting in the passenger seat, look where your right foot will be, and directly to the right of your foot, will be that panel.
The fuel pump relay on a Mercedes 450SL is typically located in the engine compartment, near the battery. It is often found on the relay panel or fuse box, which is situated on the driver's side. Consult the vehicle's manual for the exact location as it may vary slightly by model year.
trunk is the battery
8 quarts
The spark plug gap for your Mercedes is .032
The point gap for a 1975 Mercedes 450SL should be set to approximately 0.016 inches (0.4 mm). This gap is critical for proper ignition timing and engine performance. Always consult the vehicle's service manual for specific guidelines and adjustments to ensure optimal operation. Regular maintenance of the ignition system, including checking the point gap, is essential for the longevity of the vehicle.
To replace the heater blower switch on a 1975 Mercedes 450SL convertible, first disconnect the car battery to ensure safety. Remove the dashboard cover and the panel surrounding the switch to access it. Unscrew the old switch from its mounting and disconnect the wiring harness. Install the new switch by connecting the wiring and securing it in place, then reassemble the dashboard components.
Approximately 26,000 units of the 1973 Mercedes-Benz 450SL were produced. This model was part of the R107 series, which was manufactured from 1971 to 1989. The 450SL featured a V8 engine and was popular for its blend of luxury and performance. Its production numbers contributed to its status as a classic car today.
I have seen a few on the net with CLK 18" alloys on, so my guess is quite possibly