W126, BENZ AID - COMMON QUESTIONS AND ANSWERS

560 SEL Hydraulic Suspension Bleeding Process

I recently replaced the hydraulic suspension/leveling valve on my 1986 560 SEL. Other than opening the breeder on top of the valve, is there any other step necessary to finish the job and make the suspension operational i.e. loose the connection at the top of each strut to bleed the air between the valve and the strut??

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Transmission Won't Go Into Reverse

I have a 1981 240D automatic tranny and today I took the car out for a drive on the highway for ~30 min. then stopped at work for a few hours as I was about to go home I realized my car would no longer go into reverse. All the other gears work normally, fluid level is fine and I hear no grinding sound like its trying to go into reverse but can't. Does anyone know what might be going on??? I am going to climb under the car tonight and see if anything looks crazy out of place but I don't know really what I should look for. Any ideas would be greatly appreciated. Thanks. -Drew

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87 190D can't get into trunk

Greetings! I posted here recently about not being able to open the trunk or fuel door on my son's 1987 190D. The other day I borrowed a hand vacuum pump and drove over to his college to try to fix it. I found the actuator under the rear seat, disconnected the yellow tube that runs to the back and pulled a vacuum on it--still couldn't get into either. I'm sorry to say I had to take a hacksaw blade to the little stob that locks the fuel door. But I DON'T want to mess up his trunk latch, so do you have any suggestions on how I can get in?

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W123/617 torque values

I am looking for a listing of torque values for the W123/617 engine. I see references in various repair guides - esp. on page #83 of the Diesel Performance Tuning & Repair - to "recheck torque on each of the locking nuts..." - where can I find those Mercedes factory torque references (other than the Mercedes service manual)? Are those reprinted/listed anywhere else? Also, how truly critical is it that the value cover on the 617 engine actually be officially within factory torque specs? Any elementary guidance is greatly appreciated. thank you, Kieran-

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Engine swap

Just got my 84 300SD running like a new car( thanks Kent) so on to the next project. A mint 76 300d that broke the timing chain after the previous owner replaced it. I have 2 options... a used unknown engine(already out of the car when I bought it) of the same year with 150,000mi? Or a 84 turbo running in the car(wrecked) with 220,000. My question is will the 84 turbo fit in the 115 chassis? Any ideas? Also any way to run the other engine on a stand so I don't transplant junk for more junk . Thanks Jon

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380SL idles high

1983 380SL IDles high, real high. Have tried several things from fuses to idle modules. But from reading the ignition swithch easy install kit, it seems the problem may be in the switch. When inspecting that area i discovered a wire spliced into the harness at the steering wheel. Placed a prob in line and it lights when starting the car. Also the heater blower motor is not functioning and the right side lights on high beam are out as well. I have no dash lights and the tach is not working.

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1979 300D Non-Turbo Mileage

My 300 non-turbo with 360K at best gets only 19 miles to the gallon of diesel. What is this car expected to get when running perfectly? I have owned this car for 2-1/2 years now, and the mileage has always stayed in the 17 to 19 mpg range. Other than that, the car has the usual issues that the older cars do, like worn vent pods inside the dash, old rubber seals on the rear window and doors. Is there anything that I can do short of disrupting the performance to increase my mileage? Thanks.

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differential gear ratio changing speedometer function?

I am excited to install the taller gearset differential, purchased from mercedessource, in my 81 300D. I'm wondering if the new gear ratio will affect the speedometer function. I have an opportunity to acquire a good speedo from a turbo if its necessary. Thanks...

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