How to remove an alternator from a Mercedes Benz SL500?
You will have to tilt the front of the alternator downward so you have access to the two fasteners that hold on the two wires. Remove the 8mm fastener (green arrow) that mounts the exciter wire to the alternator. Remove the 13mm fastener (green arrow) that mounts the alternator output wire to the battery cable. Remove the cable from the stud.
What should I do if my alternator is not charging?
The alternator normally lasts longer than the battery. There are some easy steps you can go through to check the function of your alternator. Tap the alternator carefully with a hammer while the engine is runnin; if the charging goes back to normal, the coals inside it are worn out.
How can I tell if I have an alternator problem?
To differentiate an alternator problem from the battery, you will need to use a voltmeter to check for voltage. First, turn off the engine and check the battery voltage. A fully charged battery should have a reading of 12.65 volts. Next, turn on the engine and recheck the voltage. You should have a reading of 13.5 to 14.5 volts.
What happens if an alternator puts out 150amps?
An alternator can be rated to put out 150amps but it will take engine horsepower to do it. Alternators are designed to provide just slightly more amperage than required. If an alternator puts out too much amperage it will “cook” the battery which can cause premature battery failure.
You will have to tilt the front of the alternator downward so you have access to the two fasteners that hold on the two wires. Remove the 8mm fastener (green arrow) that mounts the exciter wire to the alternator. Remove the 13mm fastener (green arrow) that mounts the alternator output wire to the battery cable. Remove the cable from the stud.
What should voltage be when alternator is running?
When the car is running the alternator produces electricity and the voltage should be above 13.5 volt. If you have a multimeter like this one, you can connect it to the battery terminals to get a voltage reading. Main battery is near the end of it’s life. Secondary (Aux) Battery needs replacing (if applicable).
What should I do Before I replace my alternator?
Before you replace the alternator make sure that your battery is not the problem. One thing you can do to troubleshoot your car is to go to Advance Auto Parts or AutoZone and have them do a FREE alternator / battery check. This test may be able to point you in the right direction. 3. Secondary Battery / Auxiliary Battery.
What causes an alternator to go out in a car?
If an alternator puts out too much amperage it will “cook” the battery which can cause premature battery failure. Excessive heat and escaping Hydrogen gas from the battery vent can be a severe problem. Modern cars like ours also have sophisticated electronics on them and rely on a stable and suitable power supply.
How does an alternator work on a Mercedes Benz?
The job of the alternator is simple; use the torque of the engine to drive an accessory drive belt. This drive belt also turns the alternator. The alternator can now generate voltage and amperage.
How much amperage can an alternator put out?
Keep in mind the alternator is more like a trickle charger than a professional battery charger. An alternator can be rated to put out 150amps but it will take engine horsepower to do it. Alternators are designed to provide just slightly more amperage than required.
How long does an alternator last at idle?
Alternators have built in voltage regulators to stabilize the voltage and current supply according to demand and it can do this anywhere from idle to 5000rpm. Keep in mind the alternator is more like a trickle charger than a professional battery charger.
The job of the alternator is simple; use the torque of the engine to drive an accessory drive belt. This drive belt also turns the alternator. The alternator can now generate voltage and amperage.
If an alternator puts out too much amperage it will “cook” the battery which can cause premature battery failure. Excessive heat and escaping Hydrogen gas from the battery vent can be a severe problem. Modern cars like ours also have sophisticated electronics on them and rely on a stable and suitable power supply.
Can a mechanic replace an alternator on a Mercedes Benz?
An experienced mechanic should be able to replace the alternator in even an hour. Even Valeo or Bosch alternators with are the Original Equipment installed on the Mercedes Benz cars, can be bought for a fraction of what the dealer charges.
How to replace alternator on Mercedes Benz E C CLK SLK s?
Tighten the nut for the electrical cable ( positive +) between 15-18Nm. Plug the electrical cable on the back of alternator and make sure it clicks when you push it in. That way you know it is locked in place. Reinstall the serpentine belt, the engine cover and the reconnect the battery. 2 Bolts that hold the alternator in place. Max 45 Nm.
How do you remove an air pump from a Mercedes?
In order to remove your air pump you need to lift and support the front axle of your vehicle, remove the lower splash shield and the accessory drive belt. See our tech articles on jacking up and supporting your vehicle, lower splash shield remova l and accessory driver belt removal.
How do you remove belt from Mercedes pump?
To remove the belt, put a 17mm socket on the belt tensioner, release the tension by turning the bolt to the left and slide the belt off the pulleys. Make sure you review the diagram (see lower down the page) of the belt routing before you do this so you are clear how it goes back on.
What kind of fuel injection does a 500SL use?
In the early years of the 500SL they used a CIS (Continuous Injection System) to inject fuel into the engine. This half mechanical system could continue to work even if the engine electronics completely failed. This type of fuel injection is more fuel efficient than a carburetor but not as precise as electronically controlled port fuel injection.
How to reset the convertible top on a Mercedes SL500?
The SL500 comes with a variety of features, such as a retractable hardtop. This hardtop is operated by pulling up on a switch to open it, or pressing the switch down to close it. If you cannot get the hardtop to work, and the switch indicator light is flashing, it may be jammed. A jammed hardtop can be fixed by following a reset procedure.
What kind of car is the Mercedes SL500?
The Mercedes-Benz SL500, part of the SL-Class of roadsters, is a two-door car classified as a luxury grand tourer. The SL500 comes with a variety of features, such as a retractable hardtop. This hardtop is operated by pulling up on a switch to open it, or pressing the switch down to close it. If you cannot get the
What to do when your Mercedes goes into limp mode?
You may also get a check engine light if your transmission goes into limp mode. When a Mercedes-Benz goes into limp mode, it only operates in second gear and reverse only. When you put it in gear, you may also feel a bang as transmission engages. The first thing you should try is to check the transmission fluid level.
How do you remove an ABC pump from a Mercedes Benz?
Loosen the hose clamps from the 2 hoses where they go to the power steering reservoir and ABC reservoir, then pull the hoses from them. Remove the front 2 of the three 10mm bolts holding the reservoir assembly in the car, then loosen the 3rd nut that attaches the bracket to the strut tower.