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#1
12-11-2015, 05:08 PM
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1972 M115 alternator mounting bracket picture
Looking for a picture of the mounting brackets/bracket for my 1972 220 with M115-920-xxxxx engine.
NOT one for a 220D which is all I have been able to find on the web. My original one cracked ages ago and I cobbled a replacement together but I'd like to put it back correctly. I believe I still have the bottom swivel piece (the one which requires the insulating bushings) but danged if I remember how the top adjuster attached.
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“Whatever story you're telling, it will be more interesting if, at the end you add, "and then everything burst into flames.” ― Brian P. Cleary, You Oughta Know By Now Last edited by Mike D; 12-11-2015 at 05:22 PM. 
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#2
12-11-2015, 06:33 PM
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Mike, the MB illustrated parts catalog that was supplied with the cars shows three different designs: M115, OM615, OM616/617. The drawing for the M115 shows separately mounted upper and lower brackets, although the mounting point for the upper bracket (the adjuster) is not clear. The drawing for the OM615 shows only the lower bracket. The OM616/617 package shows the upper bracket (stamped steel) attached to the lower bracket (cast iron), and then the whole package attached to the block with three studs & nuts, very much like the package on the M110. Is it possible that the M115 used a package like the M110?
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#3
12-11-2015, 07:03 PM
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Yup, that's the problem. The OM615/616 style which I am using, mounts flush to the block with 3 or 4 bolts. There are no machined threads on the M115 to accept bolts for the upper 2 holes and there is no support for the bracket. This creates a "pivot point" which, over time, snaps the two bolts which are used. Drilling and "eazy-outing" those bolts when they snap is becoming monotonous.
 The original mount (at least when I got the engine) has a M121 number. It's been about 6 years but I do seem to remember it having a long threaded rod which attached to the front of the engine and had a block attaching it to the alternator. Since then I've removed the original A/C (York) mounting brackets and changed the intake from twin Solexes to a single Stromberg style manifold so my memory is a bit cloudy. Things are always in a flux around my place. I can always re-engineer a solution but I was hoping for a bit of a guideline/reference point. The separate bracket is probably the picture/number I need. My manual doesn't have a picture of the actual bracket.
__________________
“Whatever story you're telling, it will be more interesting if, at the end you add, "and then everything burst into flames.” ― Brian P. Cleary, You Oughta Know By Now Last edited by Mike D; 12-12-2015 at 12:34 PM.
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#4
12-11-2015, 07:25 PM
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As a side note. I must be spending too much time on the 'net. When I do a search for stuff for the M115 I keep running into articles/posts which I wrote!
__________________
“Whatever story you're telling, it will be more interesting if, at the end you add, "and then everything burst into flames.” ― Brian P. Cleary, You Oughta Know By Now
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#5
12-12-2015, 11:07 AM
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__________________
1992 W201 190E 1.8 171,000 km - Daily driver 1981 W123 300D ~ 100,000 miles / 160,000 km - project car stripped to the bone 1965 Land Rover Series 2a Station Wagon CIS recovery therapy! 1961 Volvo PV544 Bare metal rat rod-ish thing I'm here to chat about cars and to help others - I'm not here "to always be right" like an internet warrior  Don't leave that there - I'll take it to bits!
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#6
12-12-2015, 12:30 PM
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Nope. That's the bottom bracket. Thanks for looking.
__________________
“Whatever story you're telling, it will be more interesting if, at the end you add, "and then everything burst into flames.” ― Brian P. Cleary, You Oughta Know By Now
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#7
12-12-2015, 01:35 PM
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Quote:
Mercedes Forums -> Riem voor dynamo en waterpomp I'm not sure if it is standard though
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1992 W201 190E 1.8 171,000 km - Daily driver 1981 W123 300D ~ 100,000 miles / 160,000 km - project car stripped to the bone 1965 Land Rover Series 2a Station Wagon CIS recovery therapy! 1961 Volvo PV544 Bare metal rat rod-ish thing I'm here to chat about cars and to help others - I'm not here "to always be right" like an internet warrior Don't leave that there - I'll take it to bits!
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#8
12-12-2015, 02:02 PM
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And here are the drawings of the pic provided by Stretch.
The first is of the M115, and the second is of the OM615.
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#9
12-12-2015, 02:37 PM
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Bingo! That's the bit I thought I remembered. Thanks a million guys!
__________________
“Whatever story you're telling, it will be more interesting if, at the end you add, "and then everything burst into flames.” ― Brian P. Cleary, You Oughta Know By Now
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#10
12-12-2015, 03:34 PM
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And of course, once I had the part number I found THIS thread...
Broken Alternator Tensioner: Did I do this?
__________________
“Whatever story you're telling, it will be more interesting if, at the end you add, "and then everything burst into flames.” ― Brian P. Cleary, You Oughta Know By Now
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