W110 W111 W112 Sedan, BENZ AID - COMMON QUESTIONS AND ANSWERS

85 300SD water leak left rear floor

When it rains or snow collects on the car, my 85 300SD collects a BIG amount of water in the area behind the driver's seat on the floor. The passenger side (side of the battery tray) is completely dry. The sun roof seals are dry and need replacing. Could that be where the leak is coming from? I read there are drainage holes around the sunroof and they get plugged...? The car is 80% restored after sitting outside for about 13 years. The engine is a factory replacement, but after purchasing it from a wrecked condition, there were no written records of maintainence.

Chassis Model Number

W126

Forums

Body and Interior Specific Aid

82 240D transmission flaring on upshift

1982 240 D w/ 180k. Transmission flares ( sounds like its slipping) on all upshifts. Worse when car is under load (ie. uphill or hard acceleration) . Not as noticeable on manual shifts. Recent fluid/filter change no help- old fluid looked great- no metal in pan. Adjusted vacuum mod. valve for firmer shifts w/ no change. Any help would be appreciated. Thanks Jon

Chassis Model Number

W123

Forums

Transmission / Suspension Specific Aid

1984 300D rear shock top washer lost

While replacing my rear axle, I unbolted the shock from the top (per the instructions). Unfortunately, I just left the washer on there while I lowered the shock with a jack.
When I got the axle installed in the hub, and raised the shock back to its normal position, I heard a clunk and looked to realize that the large washer on top had fallen off. I have looked in there the best I could and can not seem to find it. I have a temporary solution on there currently which consists of two washers that are slightly smaller in diameter than the correct one. The substitute is only there so that the whole assembly doesn't fall down, and I would like to get a correct one on there as soon as possible. Preferably before I start driving it again. (it's parked right now while I fix a few major items)

Chassis Model Number

W123

Forums

Transmission / Suspension Specific Aid

87 300SDL suddenly won't upshift from 1st

Hey- I am new so please forgive any faux pas-After fueling up, suddenly would not upshift, but if moved to neutral after reaching shift point or higher rpm would slip into higher gears upon shifting back into D- your manuals on this subject seem to only cover diesels up to 1985- can you direct me to appropriate manual/technique/parts/etc I am guessing vacuum trouble but know nothing more on subject- thus I would also like a primer on the vacuum system in general-Thanks!

Chassis Model Number

W126

Forums

Transmission / Suspension Specific Aid

'82 300D stumbles to start - UPDATE, PROBLEM SOLVED!

my '82 300D stumbles when starting in hot or cold weather. i replaced the glow plugs and reamed the pre-chambers. they had minimal carbon build-up. i checked engine (1 degree stretch) and IP timing (24 degress BTDC) and they are both ok. compression is 24+ bar across all cylinders with 96k original miles on the clock. injector release pressure is low (1750 psi) and i plan to replace the nozzles and bump the pop pressures to 1950 psi. could the low pop pressures be the root cause for the stumble starts, or is there something else i need to check?

Chassis Model Number

W123

Forums

Diesel Engine Specific Aid

86 300sdl oily gunk in crossover and intake

I am putting in my new balanced injectors and injection pump stub shaft o-rings. I took off the crossover pipe to gain access to the third injector and just give me more room to put hard lines back in after cleaning them off course. I found that there is an oily gunk in the cross over pipe and the intake should I be worried about my turbo? I do have a small oil leak from the turbo (the only oil leak on the car) are the doughnuts bad turbo getting bad ect. Should I take the intake off and clean it and get a new intake gasket soon?

Chassis Model Number

W126

Forums

Diesel Engine Specific Aid

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