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

1983 300SD vacuum locks but not unlock

I have gone through the vacuum lock lines and tested each door to make sure I dont have a leake. The doors will all lock when the drivers door is pushed down from inside or with the key. But will not unlock the other 3 doors when the drivers door is opened. The trunk lock holds vacuum but does not unlock other than with the key. When I push the drivers door down the motor in the trunk comes on and goes off. When the drivers door is opened (lock pulled up) is the motor in the trunk to come on and push air to the other 3 doors to unlock them?
Thanks for your help Jim Hunt.

Chassis Model Number

W126

Forums

Body and Interior Specific Aid

1982 240D Abnormal inside both tire wear ??

Hi. Wanted to get your idea on why I would be getting abnormal tire wear on the inside of BOTH tires. I do have some steering play which I attribute to needing either new idler arm bushings, which I just ordered or perhaps in need of a reconditioned steering box. However, I can't see this causing the inside of both tires to wear. Is it possible the camber is set too far somehow? Thoughts?

Thanks
Dave

Chassis Model Number

W123

Forums

Transmission / Suspension Specific Aid

'79 300TD oil filter housing leak

I ran a little low on coolant the other day (not sure why...), and the engine got hot (almost 200 degrees according to the gauge on the dash). after i filled the radiator, i noticed that oil had started leaking from somewhere on the engine. a can of brake cleaner revealed that the oil is leaking from under the oil filter element housing cap. so i changed the oil and filter and filter housing cap o-ring ('cause it was time for an oil change anyway), and tightened it down really tight, and it is still leaking. A LOT.

Chassis Model Number

W123

Forums

Diesel Engine Specific Aid

300D Dies under load

1982 300D.."300D Dies under load" I have isolated fuel: changed filters, removed fuel tank and had cleaned, screen in tank cleaned,purged system with cleaner (Diesel purge), replaced fuel lines, cylinder compression across board was 305+-5,glow plugs replaced, new monark injectors (bench tested: 2300,2200,2200,2200,2150)checked timing chain and valve job (cam lobes looked good), and removed exhaust. Fuel is going to each injector. Car runs rough at idle and dies when placed into gear. In fact, while idling (high rev's motor sounds good)and I turn on air car stalls.

Chassis Model Number

W123

Forums

Diesel Engine Specific Aid

1984 300D aftermarket OE direct fit rotors

Thanks for answering my last question and all the other info I have gotten through MercedesSource by way of instructions and guides. I have new rotors that I aquired and the part number indicates that they go to the front of my 1984 300D. My question is that the old rotors (probably the originals)are bolted to the front bearing hub as you have confirmed. These new aftermarket rotors have no threads in the hub mating surface to accept the 5 mounting bolts that hold the old ones on. What gives? I have looked at other replacement brands also and see no way of fastening them to the hub.

Chassis Model Number

W123

Forums

Body and Interior Specific Aid

1984 300D brake rotor removal

When removing a brake rotor, (disc), is it fastened to the hub with any clips or bolts or is it sandwiched between the wheel and hub then secured by the lug bolts? There is 25 years of dirt/rust holding it in place also so I didn't expect it to exactly fall off but I was wondering if there are any fasteners I should be aware of.
As always thanks for any info that is offered.
Great resource.......Mike G.

Chassis Model Number

W123

Forums

Body and Interior Specific Aid

74 240D Oscillating Idle

I had a bunch of work done about a month ago and this problem seemed to appear after that. The engine runs smooth in idle when it's in park, but when it's in gear it starts reving up and down. It's a real problem when trying to parallel park, the car moves in surges. If I put the pedal down it stabilizes.
The work was; rebuilt injectors (from MS), new fast glow plugs, new valve cover gasket, valve adjustment, replaced leaky o-rings on injector pump. . .
It seems to me to be in the injector pump, any thoughts?

Chassis Model Number

W115

Forums

Diesel Engine Specific Aid

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