Respuesta a "Why does my 80 123 300TD Wagon body roll excessively?"Service manual states that method to refill SLS system is to run engine for approx. 1 minute at medium speed. While filling up, load vehicle rear in trunk with approx. 150 kg (330 pounds) or hold down so that level controller can be set to "filling". Filling position is when the level controller valve arm is in the upper position (above horizontal). Manual states system can also be filled with connecting rod disconnected on lever of level controller in position "F" (filling). For this purpose, run engine at medium speed for approx. 30 seconds. Then mount connecting rod again. Summarizing this, it simply means the SLS level controller valve must be in the filling position (lever moved up) to allow circulation of hydraulic oil, to purge air from system. Engine running at "medium speed" (roughly 1,500 - 2,000 RPM) increases flow through the valve enabling the bleeding process to move air bubbles to oil reservoir. After servicing the SLS hydraulic system, If the vehicle is driven without any significant load...
Respuesta a "Climate control fan won't work"You need to identify year and model of vehicle. Otherwise no viable answers can be offered. It is also common courtesy to state amount of miles vehicle has accumulated or “unknown” if that is the case.
Respuesta a "How do I fix 2 cylinders not working properly?"This question is far too vague to be answered succinctly. “2 non-functioning cylinders” could be caused by any of the following: faulty ignition wires, distributor cap, spark plugs, cylinder head gasket, cylinder head, valves, valve adjustments, rocker arms, camshaft, piston rings, cylinder bores, fuel injectors and many other possibilities. For any reasonable diagnosis, you must provide specific details. It is not even stated if these cylinders are always non-functioning or only intermittently affected. Common courtesy is to tell how many miles vehicle has accumulated or state the amount is “unknown”. Can it be fixed? Sure, have the faulty engine rebuilt or install another one in the car.
Respuesta a "Why is my Economymeter stuck?"The “Economy” meter is actually a vacuum gauge plumbed into the intake manifold. Inspect vacuum lines under hood to verify all are connected. Next would be the line at rear of instrument cluster, it has rubber tubing connected to hard plastic line. Rubber fittings deteriorate, thus creating leaks. For diagnosis, it would be worthwhile to test automatic door looks (if vehicle is equipped with this feature). Failure of locking system indicates vacuum leak, which may be related to gauge not reading. A hand operated vacuum pump is very beneficial for testing, isolation and diagnostics. Normal operation is: idling provides sufficient suction, causing significant needle deflection. As throttle is opened farther, vacuum drops off reducing reading.
Respuesta a "Buzzing Noise coming from Instrument Cluster - 79 Mercedes 280E"Most likely the cause is the bushing in the speedometer. This is the fitting one sees when speedometer cable is removed, looking into threaded mount at rear of cluster. Suggested resolve is: remove cluster, apply four to five drops of SAE 20 oil (sewing machine oil, “3-in-1 Electric Motor Oil” or equivalent) to the rotating element. This is speedometer part with square recess into which speedometer cable mates.
Respuesta a "My pivot mount accelerater wore out on mercedes 300td"The vacuum to shut-off valve is not present, so there is likely a leak somewhere. Refer to vacuum diagram under the hood on radiator support (here's link to one in case yours is missing: https://mercedessource.com/problems/vacu...-correct-1980-1985-diesel-vacuum-system-hose-and-line-routing). The emissions controls valves on top of valve cover are first fittings to inspect, since this is near the linkage which you serviced. Next, carefully check each fitting near the firewall where lines enter passenger compartment. Any single fitting being loose will cause reduced vacuum thereby preventing engine shutdown. An easy way to verify leak is confirm that automatic door locking is also not working. Vacuum to door locks also controls engine shut-off valve. Lastly, look at the rear of fuel injection pump, where brown line connects. This is the fitting to shut-off valve and must be properly connected for key-controlled engine shutdown to work correctly. Do not assume a fitting is tight by looking at it, pull the...
Respuesta a "1982 Mercedes 240D Clutch replacement"Factory procedure assumes engine has been removed with transmission, but it is not required. Remove transmission after taking out necessary preliminaries (starter, driveshaft, exhaust, slave cylinder line, shift linkage, rear engine mounting bracket, etc.). To reach the top two bolts on clutch housing use a three foot (one meter) extension with a wobbly socket. Without this combination, reaching the bolts is very difficult. Transmission removal is straightforward, most common tools (ratchets, 3/8" and 1/2" sockets, metric hex wrenches, combination wrenches, etc.) will suffice. When replacing clutch, be sure to use new clutch release bearing (a k a throwout bearing) as well as new pilot bearing (that which is contained in end of crankshaft). Also inspect front and rear flex discs on driveshaft while you're under the car. For someone who has never changed a W123 clutch, expect process to take six to eight hours. I have seen the job completed in less than two hours by a factory trained Benz guru.
Respuesta a "Driver's seat will not adjust backwards"It is very common for W123 seats to have limited rearward travel when a coin has become lodged in track. Pennies, dimes and nickels are just some of the things I've removed from jammed and malfunctioning seat tracks. Get a good flashlight, dental mirror and flexible grabber retrieving tool. Inspect from front and rear ends of seat. You may be surprised what is causing the interference. If nothing else, a good visual assessment will confirm locking tabs are moving sufficiently and properly disengaging when lever is actuated.
Respuesta a "Rough idle with clicking sound"I would venture a guess that you have a sticking fuel injector and cause is loosened carbon and sludge deposits. The change in fuel coincides with deposits being dislodged. Clicking noise would be caused by injector mechanism not moving smoothly (spring sticking, disc hanging up, etc.). Since the injector is not operating correctly, the cylinder is misfiring, cause rough running and loss of power. Switching back to previous fuel type may help, but at least one injector needs attention. You should be able to locate clicking injector using a mechanic's stethoscope or by placing a long screwdriver onto injector body, then putting your ear against the screwdriver handle. Factory manual procedure is to isolate misfiring cylinder by slightly loosening fuel delivery line at injector body, with engine running. A good injector will cause engine to stumble and run roughly when line is loosened. After loosening and confirming injector condition, tighten the fitting snugly, then move on to next injector. Test each one...
Respuesta a "1982 mercedez 240d w123 wont stay on"Pull the brown vacuum line from rear of injection pump. This connects to the vacuum shut-off element. If vacuum lines were connected incorrectly, constant vacuum will cause the pump to shut off fuel delivery within a few seconds after engine has started (the amount of time required to build up enough vacuum). If removing line allows engine to run, check the vacuum lines for proper connection and also test the vacuum shut-off switch (device is controlled by ignition key position). Sometimes the shut-off switch can fail open allowing constant vacuum to be applied, thus causing engine to stop running after a few seconds.
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