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123 Half shaft sizes.....
I had the car in the shop today to have a half shaft replaced. The guy saids that he cannot get the 12 MM shaft and that the 8MM was the only one he can get his hands on. In all of my searching for half shaft info on this site, I have not seen any reference to a 12 MM shaft.
Is he nuts? Am I nuts? (no answers from the peanut gallery!) Whats the deal here?
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NC Benz Fuquay-Varina, NC 1979 300D 1983 300D Turbo 260,000 Miles 1984 300D Turbo 345,000 Miles (sons car) OBK #31 1998 Ford Expedition 5.4l (fer Haulin'!) 145,000 1973 19' SeaRay with 115 Mercury TOWER OF POWER! Club Car Golf Cart 36V Ex toys: 1967 Mustang 289 (First Car) Fiat 124TC 1975 Honda CVCC 1980 Audi 5000 Turbo |
#2
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Well
I thought the 8mm and 12mm referred to the long bolt that goes in from or through the hub. I just did mine, had 8 mm I think and the auto parts store had the same, but i thought they were interchangeable. But they cost about $100.00 each exchange and you better find out for sure.
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Junqueyardjim Christianity, if false, is of no importance, and if true, of infinite importance. The only thing it cannot be is moderately important. C.S. Lewis 1983 Mercedes W123 240D 4 Speed 285,000 on the road with a 617 turbo, beautiful butter yellow, license plate # 83 240D INDIANA 2003 Jaguar Type X, AWD. beautiful, good mileage, Mom's car, but I won't let her drive it! |
#3
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It's the bolt at the outside end
You will find information on this if you search the forum. Try this thread as an example:
W123 axle R&R job--some questions? As I recall, the 8mm bolt replaced the older 12mm size. An older axle can be used with the newer 8mm bolt if an [I don't know the word] "insert" is used to reduce the tapped hole in the end of the axle from 12mm down to 8mm. The purpose of the bolt, by the way, is to keep the axle locked to the wheel hub. In any case, the axle is the same and nothing on the car needs to be modified to use the newer axles. The only difference is that you have to buy an 8mm bolt, a bendable washer ("clamping disk" -- puts tension on the bolt, a form of lock washer), and a spacer. Your mechanic is right -- the 12mm versions are no longer available except maybe from a junkyard (and they would probably be in poor condition anyway). Make sure the mechanic replaces the seal (one per axle) in the side of the differential case. Jeremy
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"Buster" in the '95 Our all-Diesel family 1996 E300D (W210) . .338,000 miles Wife's car 2005 E320 CDI . . 113,000 miles My car Santa Rosa population 176,762 (2022) Total. . . . . . . . . . . . 627,762 "Oh lord won't you buy me a Mercedes Benz." -- Janis Joplin, October 1, 1970 |
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Quote:
I did search the forum and didnt come up with anything related to 12MM. Thanks for the other information! Big help!
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NC Benz Fuquay-Varina, NC 1979 300D 1983 300D Turbo 260,000 Miles 1984 300D Turbo 345,000 Miles (sons car) OBK #31 1998 Ford Expedition 5.4l (fer Haulin'!) 145,000 1973 19' SeaRay with 115 Mercury TOWER OF POWER! Club Car Golf Cart 36V Ex toys: 1967 Mustang 289 (First Car) Fiat 124TC 1975 Honda CVCC 1980 Audi 5000 Turbo |
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BTW, what's the difference between homokinetic and annular?
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1982 300CD Petrol/Black Leather |
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