I discovered a serious slit/hole at the bottom of my rear left trailing arm. I have attached some pictures to get anyone and everyone's opinion on what my options are. I already looked up the price of a new one and it's $1785. Any help would be appreciated. Each pic is about 46KB and the limit is 63, so I think this one pic says it all.

Attached Thumbnails

 

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1999 MB SL500 (110,000 mi)
2004 Volvo V70 2.5T (220,000 mi)
2014 Tesla Model S 85 (136,000 mi)
MBCA member

which car? ,,, I've sold used trailing arms,,, W126

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Closing the store
Benzbonz.biz on your smart phone or tablet.

used should be fine,

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1967 250 S
1967 280SE
1968 250S
1971 280 SE
1973 220
1974 280 S
1975 450 SEL
1976 220 D
1979 300SD
1983 300 SD
1985 230 TE euro
1986 280SL
1986 500 SEL euro
1986 190E 2.3
1990 300 SE
2003 C230 K
2004 C230 K
1987 560SEL
1987 300SDL now in canada
2005 C230
1998 C43 AMG Sold to DON
1993 190E 2.6
300TD Former daily driver Totaled
current:
R320 CDI
Ram 2500 Cummins

Why not cut out the rust and weld a piece of steel over the hole?

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Regards

Warren

Currently 1965 220Sb, 2002 FORD Crown Vic Police Interceptor

Had 1965 220SEb, 1967 230S, 280SE 4.5, 300SE (W126), 420SEL

ENTER > = (HP RPN)

Not part of the in-crowd since 1952.

good used ones can be bought for from 75 to 200ea.

the patch idea is good in theory but that arm is a sealed unit. for it to rust out like that means there must be a hole somewhere else you cannot see, imho. the metal is surprisingly thin too, so a weld would be tricky to do.

otoh if the arm is not sagging it may be fine for a good while. but i think i would find a good used arm and have it on hand for when it is needed. i have paid about 200 labor, i thin,k to get them done at my indie.

good luck

tom w

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[SIGPIC] Diesel loving autocrossing grandpa Architect. 08 Dodge 3/4 ton with Cummins & six speed; I have had about 35 benzes. I have a 39 Studebaker Coupe Express pickup in which I have had installed a 617 turbo and a five speed manual.[SIGPIC]

..I also have a 427 Cobra replica with an aluminum chassis.

Sorry, it's my 83 300td I am talking about. The "slit" is followwing the curve of the rear spring, which naturally is putting pressure on it. I suppose what didn't help was I recntly made 3 different trips to Home Depot, loading up with about 650 lbs of retaining wall block. Now that I have seen this rust problem, that will be the last time I do that Fortunately we have another TD to do any heavy hualing. Is replacing this something one can do in driveway/garage? I wold have to get with my indie and see if they would install a used part like this.

__________________
1999 MB SL500 (110,000 mi)
2004 Volvo V70 2.5T (220,000 mi)
2014 Tesla Model S 85 (136,000 mi)
MBCA member