the lower bolt on my alt bracket will move about1/8 turn in either direction and that's it. working at it a bit only succeeded in rounding the corners off a but, so I thought I should stop and ask for some help.

I am trying to replace the alternator, but in doing so I noticed there was no bushing on the upper bolt and no nut either

so maybe my alternator is ok, but not generating voltage because its loose.

so now I am trying to remove the lower bolt to get a bushing back up top.

what do I do?

__________________

Current Mercedes
1979 maple yellow 240D 4-speed

Gone and fondly remembered:
1980 orient red 240D 4-speed

Gone and NOT fondly remembered:
1982 Chna Blue 300TD

Other car in the stable:
2013 VW Jetta Sportwagen TDI / 6-speed MT

The lowest bolt threads into the bracket bolted to the engine. If it won't come all the way out, it's stripped.

Try and remove the bracket bolted to the engine, this is what I had to do to get mine out.

__________________
83 SD

84 CD

WHICH lower bolt? closest to the engine, or furthest from it?
are you trying to loosen it from the front of the alt, or the back? ALL BOLTS GET LOOSENED FROM THE BACK!

__________________
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!

thanks, did you have to remove anything to get to the bolts on the engine?

its the one that forms the pin in the hinge...Its the one with the head right by the ac high pressure port

__________________

Current Mercedes
1979 maple yellow 240D 4-speed

Gone and fondly remembered:
1980 orient red 240D 4-speed

Gone and NOT fondly remembered:
1982 Chna Blue 300TD

Other car in the stable:
2013 VW Jetta Sportwagen TDI / 6-speed MT

I use a 17mm 1/2" drive socket and ratchet. and LOTS of leverage. it helps to soak the other side with aerokroil too.

__________________
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!

thanks vstech, I guess there is nothing to lose. I was using a box end. will try the ratchet and a bar

__________________

Current Mercedes
1979 maple yellow 240D 4-speed

Gone and fondly remembered:
1980 orient red 240D 4-speed

Gone and NOT fondly remembered:
1982 Chna Blue 300TD

Other car in the stable:
2013 VW Jetta Sportwagen TDI / 6-speed MT

Does the alternator move free on the lower pivot bolt?



.

__________________
ASE Master Mechanic

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

https://www.boldegoist.com/

aerokroil or liquid liquid wrench oil... a good amount of it,

__________________
Current Diesels:
1981 240D (73K)
1982 300CD (169k)
1985 190D (169k)
1991 350SD (116k)
1991 350SD (206k)
1991 300D (228k)
2008 ML320 CDI (199k)
1996 Dodge Ram CTD (442k)
1996 Dodge Ram CTD (267k)

Past Diesels:
1983 300D (228K), 1985 300D (233K), 1993 300D 2.5T (338k), 1993 300SD (291k)

enough to wiggle a bit, but I haven't been able to get the belts loose enough to slip them off. I can adjust the top nut all the way out and loden them up, but not write enough to slip them off, so I think the hinge isn't really free. I'm not sure if that answers your question.

who carries aerokroil...I have pb blaster, is it better for the job?

__________________

Current Mercedes
1979 maple yellow 240D 4-speed

Gone and fondly remembered:
1980 orient red 240D 4-speed

Gone and NOT fondly remembered:
1982 Chna Blue 300TD

Other car in the stable:
2013 VW Jetta Sportwagen TDI / 6-speed MT

Ive used pblaster, and as far as aerosols go, it is probably the best... But the actual liquids in my experience work far better. More concentrated and more localized without the mess. Go to Home depot or any parts store and buy the bottle of liquid (not aerosol) liquid wrench. Works great. Apply to the specific interfaces of the seized parts you want to move.

__________________
Current Diesels:
1981 240D (73K)
1982 300CD (169k)
1985 190D (169k)
1991 350SD (116k)
1991 350SD (206k)
1991 300D (228k)
2008 ML320 CDI (199k)
1996 Dodge Ram CTD (442k)
1996 Dodge Ram CTD (267k)

Past Diesels:
1983 300D (228K), 1985 300D (233K), 1993 300D 2.5T (338k), 1993 300SD (291k)

I went through this nightmare recently after the alernator died on my '84 TD. The bottom bolt was seized in the two-inch hole in the aluminum bracket. Afraid of snapping the bolt, I used assorted prybars and a 2x4 to move the alternator as needed. First I removed the top adjuster bracket. Then I pried the alternator out as far as I could to allow room for my socket to unbolt the alternator bracket from the engine. Then I removed the alternator, with bracket, so I could work on that bolt someplace more convenient, with a breaker-bar, electric impact-gun, and liberal doses of oil, until (two hours later!) it finally came out. During this ordeal, the bolt head did get a bit rounded, but there still was enough left to be able to tighten it with a six-point socket. Plus it's now well lubed, so that it should be OK for awhile.
You migh try soaking it with some type of penetrating-oil for a day or two before attempting what I went through. Good Luck.

Happy Motoring, Mark

__________________
DrDKW

Kroil isn't generally available for retail sale, but you can find it at Eastwood, Amazon, and Ebay. Or you can order it directly from Kano Labs if you give them a business name.

From the Kano Labs website:
ALL PRODUCTS PRODUCED AND DISTRIBUTED BY KANO LABS ARE FOR INDUSTRIAL USE ONLY AND ARE NOT INTENDED FOR RETAIL SALE, PERSONAL OR CONSUMER USE.

if you have a C.C. Dickson locally, it's on the shelf. also totaline parts carries it locally. nearly any HVAC supply shop should have it.
Johnstone supply etc... Trane service centers also.

__________________
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!

thanks...I ordered it from amazon. should be her by the end of the week.

__________________

Current Mercedes
1979 maple yellow 240D 4-speed

Gone and fondly remembered:
1980 orient red 240D 4-speed

Gone and NOT fondly remembered:
1982 Chna Blue 300TD

Other car in the stable:
2013 VW Jetta Sportwagen TDI / 6-speed MT

what did you pay, and which size can did you get?

I was working on a jeep yesterday. large brother and neighbor using 24" 1/2" drive breaker bar and unable to remove stubborn nuts from steering linkage... I sprayed on the kroil, 2 minutes later, undid the bolts with ease.

__________________
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!