W126

Restoration and Major Repair Articles

We want to share with you some of restoration and repair work that has come out of our own shop. Our goal is that this information can both inspire and instruct you to tackle needed repairs on your own Mercedes. Nothing excites us more around Mercedessource than to have someone write to tell us that for the first time they have successfully worked on and repair their own car! Success breeds more confidence which in turn leads to more success. We want these articles to give you that same feeling of success.

81 300SD transmission seals are leaking ??

My transmission has developed a leak at the front seal. How difficult a job is it to perform as a DIYer? What other seals should be replaced at the same time? If out of the range of DIYer, what would be an estimation of how much professionals would charge? Is this something one could expect a local Aamco could perform correctly? Thank you in advance for your response.

Chassis Model Number

W126

Forums

Transmission / Suspension Specific Aid

84 300SD key switch bad?

i posted another forum but thinking on it if i might have a bad key switch as well.i have an 84 300sd when i turn the switch about half the time it wont crank it will go thru the glow plug cycle fine then just click sometimes or nothing at all but when i pop the hood and take the plastic cover off the wire harness on the passenger side and touch the two outside contacts together with a piece of wire it fires right up

Chassis Model Number

W126

Forums

Body and Interior Specific Aid

84 300 sd wont shut off or shift gear

i have a 84 300 sd i traded for from a friend of mine that was wrecked but ran.ive fixed the wreck damage replaced hood etc . ive cleaned banjo fittings changed all the filters and hoses new radiator new thermostat . ive checked the shut off valve with a vacuuum tester shut right off and holds pressure.i had a bunch of vacuum leaks . ive replaced alot of the fittings and got alot of it fixed but the car wont shut off from the key switch and while the engine seems to be strong the car wont shift and go above 30 at 30 35 mph its at 3000 rpm .

Chassis Model Number

W126

Forums

Diesel Engine Specific Aid

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