W115

'74 240D Belt Issues

I have a 1974 115 chassis 240D. I've been having issues with the alternator belt losing tension and squealing. My problem seems to be the the infernal way the tensioning works, mostly with the rack that the star headed bolt moves along. The rack seems to move up when I try to use the star bolt to tighten the belt, regardless of how tight the rack bolt itself is. I tried to skip the whole silly star bolt thing by simply levering the alternator with a judiciously placed prybar and then tightening the pivot bolt and star bolt. It seems to hold for one or two trips to the grocery store before the dreaded squeals start again. I'm using the conti brand belts and have replaced the star bolt and nut.

Chassis Model Number

W115

Forums

Diesel Engine Specific Aid

220D Not Starting

I have a 220D that sat for several years, but previous owner said it ran last year after compression starting. I have no glow plug light before and after pencil type glow plug upgrade from mercedessource. Motor spins fast enough and acts like it wants to start. I can smell burnt fuel from the tailpipe, but it just won't catch. When the starter knob is pulled out to the glow position I do see the dash lights dim a little. I've found a couple of comments about W115 220d's not having a glow plug relay. What else can I check to verify function of the glow plugs?

Chassis Model Number

W115

Forums

Diesel Engine Specific Aid

76 300D power steering noise

My mother's 76 300D has started to make a squealing sound when the car is turned. It seems to be temperature sensitive in that it has started and is worse now in the colder weather. It does not squeal when it first leaves the heated garage. My first thought was a loose belt as I had replaced all the belts 2 months ago. I did tighten it, even though it was not very loose. My only experience in pumps going bad is that they start to leak. Can a bad pump start to turn hard and make the belt squeal?

Chassis Model Number

W115

Forums

Body and Interior Specific Aid

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