This Must just be On 126s the 123s all got 1035mm belts, so not as tight

__________________
John HAUL AWAY, OR CRUSHED CARS!!! HELP ME keep the cars out of the crusher! A/C Thread
"as I ride with my a/c on... I have fond memories of sweaty oily saturdays and spewing R12 into the air. THANKS for all you do!

My drivers:
1987 190D 2.5Turbo
1987 560SL convertible
1987 190D 2.5-5SPEED!!!

1987 300TD
2005 Dodge Sprinter 2500 158"WB
1994GMC 2500 6.5Turbo truck... I had to put the ladder somewhere!

What exactly changed on the '84s onward that causes this difficult belt change?

__________________
-diesel is not just a fuel, its a way of life-
'15 GLK250 Bluetec 118k - mine - (OC-123,800)
'17 Metris(VITO!) - 37k - wifes (OC-41k)
'09 Sprinter 3500 Winnebago View - 62k (OC - 67k)
'13 ML350 Bluetec - 95k - dad's (OC-98k)
'01 SL500 - 103k(km) - dad's (OC-110,000km)
'16 E400 4matic Sedan - 148k - Brothers (OC-155k)

You never did read post #19.............

Because, if you did, you would already have your answer.

Not sure if this has been mentioned yet (tl;dr) but last time I did this I loosened up this bolt:



I didn't take it out, and I undid the bottom bolt completely. This allowed the alternator to drop a few inches and the belt went on easily. Also repositioning the bracket after the fact wasn't too hard either, once it got tight the torque from the wrench was more than enough to raise the bracket and put the bottom bolt in.

This however was on my 1980 TD with only one belt, but a larger alternator.

Unfortunately, you've got the logic reversed. The alternator must get closer to the engine centerline to R&R the belts. For that to occur, the bracket must rise upward so the alternator can pivot in the slot.

On the '84 and '85, the bracket cannot rise sufficiently because the water outlet is in the way.

The bolt that you reference is the third bolt and it is mandatory to loosen that bolt to get the alternator to pivot. That's the bolt that John is suggesting to remove in order for the bracket to move further inboard. I don't think it will work for him.

^Bummer, and you're probably right. I did this while I was rebuilding my AC so it's been a while/wasn't an important job.

I do remember it being a pain in the ass before I did whatever made it work.

In your photo above, the current position of the alternator would just barely allow R&R of the belts, IMHO. However, there is NFW that the alternator could ever get to that position on the SD. It won't get past the 1/2 way point in the slot.

Right now, with belts less than one year old, I've got about 3/8" of slot remaining on the outside..........then I need new belts again.

That's a copy of my shot, and that's where I took both belts off by hand, minimal prying, no cursing.

__________________
1985 300D-189k The 'UD', Ivory and Pinkamino
1979 300D-211k Dark Gray, Parchment
A 1980 Harley-~166k and
A 1994 Ford diesel pickup-349k and
A 1990 gasser Volvo wagon-145k

Clearly, that situation is quite different than the SD. The bracket can move much higher on that engine.

Here are some crap photos of mine...

That's EXACTLY the problem on the SD.

The bracket cannot rise sufficiently. It hits that water outlet.

I'm just trying to remember exactly what I did. I might have even taken that whole bracket off and left that bottom bolt on but just loosened. Put the belt on, and replaced the bracket.

That at least sounds familiar to me...

If you take that bracket off--Then its certainly time to hit it with a 4 1/2 " grinder and remove some material so the damn alternator can rotate in some more in the future

Unfortunately, I've never been able to determine the exact point of contact between the bracket and the outlet tube.

Hmm. I've seen brackets that have a giant hole in the center of them... factory... perhaps the problem was addressed?

__________________
John HAUL AWAY, OR CRUSHED CARS!!! HELP ME keep the cars out of the crusher! A/C Thread
"as I ride with my a/c on... I have fond memories of sweaty oily saturdays and spewing R12 into the air. THANKS for all you do!

My drivers:
1987 190D 2.5Turbo
1987 560SL convertible
1987 190D 2.5-5SPEED!!!

1987 300TD
2005 Dodge Sprinter 2500 158"WB
1994GMC 2500 6.5Turbo truck... I had to put the ladder somewhere!