I was changing my oil tonight and thought I'd investigate an intermittent cold-weather alternator belt squeal and found the part of the bracket that holds the belt tensioner both bent and cracked. I can only assume someone torqued on it without loosening the other bolts.

Where do I find such a part for a 240D? The long tensioner bolt is also bent and very corroded.

__________________
1965 190D
1980 240D

I clean and bend these back into shape all the time.

These may help you.





1982 240D Alternator Bracket Removal

Bent my alternator bracket - should I be worried?

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__________________
ASE Master Mechanic
asemastermechanic@juno.com

Prototype R&D/testing:
Thermal & Aerodynamic System Engineering (TASE) Senior vehicle instrumentation technician.
Noise Vibration and Harshness (NVH).
Dynamometer.
Heat exchanger durability.
HV-A/C Climate Control.
Vehicle build.
Fleet Durability
Technical Quality Auditor.
Automotive Technical Writer

1985 300SD
1983 300D
1984 190D
2003 Volvo V70
2002 Honda Civic

https://www.boldegoist.com/

206 is a one piece unit. Much easier to remove the alternator if 158 is loosened first

__________________
1985 300D 198K sold
1982 300D 202K
1989 300E 125K
1992 940T

"If you dont have time to do it safely, you dont have time to do it"

"The democracy will cease to exist when you take away from those who are willing to work and give to those who would not."

BEFORE bolt 206 is TOUCHED, loosen nut, 227, and bolts, 158 AND 239!
the tensioner will smoothly adjust, and the bolt will have little stress on it.

Alternator and Parts for sale on Pelican

__________________
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 190D 2.5Turbo
1987 190D 2.5-5SPEED!!!

1987 300TD
1987 300TD
1994GMC 2500 6.5Turbo truck... I had to put the ladder somewhere!

as you can see, the parts are not cheap.

parts yards are stocking less and less of these cars. lemme know if you need a bracket. I may even have a bolt.

also, post a pic of the bracket, maybe it's repairable.

__________________
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 190D 2.5Turbo
1987 190D 2.5-5SPEED!!!

1987 300TD
1987 300TD
1994GMC 2500 6.5Turbo truck... I had to put the ladder somewhere!

I'll take a photo of it asap. It's cracked but I have access to welding equipment. This vehicle isn't a looker so function first.

__________________
1965 190D
1980 240D

I believe I have a complete unit as well, uncracked if you need. Bought on on fleabay and before it arrived found one in boneyard so ended up with two.

__________________
Eric, CPO, Submarines, retired.
Here's a sig line...
Mine: '68 Corvette LS1/4L65E, 83 240D, 2000 GMC 4x4, 08 FLSTC Anniv
Hers: '72 Corvette 454/4spd, '99 MB SLK, '93 Metro vert, 78 240D, '92 Silverado, '65 Fjord Rustang, '59 Fjord Fairlane, '17 Slingshot.

Okay confession time. I have just been limping this thing through because of this polar vortex crap. The belts would seal for a few minutes and quiet down so onward I drove. Finally the other day I'm on my way home from work and my battery light and power steer start simultaneously going on the blink.

Both belts at once? Weird.

I loosened both the power steering pump and the alternator and found the crank pulley to be pretty freaking loose. Now the pulley appears to be attached to the harmonic balancer firmly but it's loose from the crank and I can just spin it. I managed to get a socket on the big 27 mm bolt without pulling out the radiator but it appears to need many turns to be tight.

From what I can tell I need to remove the balancer and pulley and replace two dowels that known to be too large? Maybe there's a definitive fix for this on the forums.

Will I need to remove the radiator?

__________________
1965 190D
1980 240D

Here is the information you need.

Diesel Harmonic Balancer threads

Main seal front/rear and harmonic balancer + Pulley


.

__________________
ASE Master Mechanic
asemastermechanic@juno.com

Prototype R&D/testing:
Thermal & Aerodynamic System Engineering (TASE) Senior vehicle instrumentation technician.
Noise Vibration and Harshness (NVH).
Dynamometer.
Heat exchanger durability.
HV-A/C Climate Control.
Vehicle build.
Fleet Durability
Technical Quality Auditor.
Automotive Technical Writer

1985 300SD
1983 300D
1984 190D
2003 Volvo V70
2002 Honda Civic

https://www.boldegoist.com/

Thanks whunter. I'll take some photos as I try and get through this.

__________________
1965 190D
1980 240D

I also have a 240d (1978) with a mangled alternator tensioner. I tried getting a replacement, but when the Pick-N-Pull didn't have the 240d listed on the online inventory, I ended up pulling one from a 300d, I think a 1980.
Here's the problem: These are totally different tensioners and mounting plates. The '78 240d has the "star bolt" style tensioner, not the "L bolt" tensioner pictured above. Here is an image from another post:

Both sides of part 176 are bent and cracked. A piece of the side where the star is supposed to tighten it is actually completely broken off.
As described here in post 294, the 300d's tensioner/plate seemed to fit (though differently than the other one), but I determined that it was mounted crooked, and I couldn't get it to work without squealing (and shredding) the belt.
My questions for you start here: Is the L-bolt-style tensioner/plate supposed to be interchangeable with the star-bolt-style one? Am I just doing it wrong, or do I just have a bad one (it doesn't look bent)? Is there another way to upgrade from those apparently-easily-mangled star bolt tensioners/plates?
Thanks.
Mike