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w123 upper control arm dos and donts?
gonna replace the UCAs on my 300D. looked at the DIY faq but it goes off on a tangent about brake rotors or something.
is the safest way to work around the spring to keep a jackstand under the LCA, and then jack up the knuckle when bolting to the balljoint? am i correct in understanding that the torsion bar bolt and the ball joint can be torqued to spec with the car in the air, and that the UCA to body bolt is the one that must be torqued with the wheels on the ground? TIA
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1981 NA 300D 310k miles |
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Quote:
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wish I could, but i dont have a spring compressor and I'm only doing the UCA, not the lowers.
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1981 NA 300D 310k miles |
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If is best when you torque the Bolt that Goes through the Fender Well if the Wheels are on the Ground. That clamps the Rubber Bushing in sort of a neutral position with no flexing of the Bushing. (The same with the Lower Control Arm Bushings.)
Next best would be if you put it on Jack Stands keep both sides at the same level and not raised any higher needed to get the Wheels off. What do you plan to use to detach the Upper Ball Joint on the UCA from the Knuckle? The tips of the Sway Bar are often rusted thin to the extent they sometimes break off. If the Tip breaks off there is 2 possible repairs for that.
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84 300D, 82 Volvo 244Gl Diesel |
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the upper control arm is not under spring tension. you can safely remove them without doing anything to the spring. assemble everything tight except the inner bolt, just leave it loose, until the car is sitting back on it's tires, then tighten it up.
get a good ratchet strap to assist moving the spindle around to get the torsion bar connected. be sure the shock absorber stays connected, but the guide rod is keeping everything stable.
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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! |
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83 SD 84 CD |
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Quote:
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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! |
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thanks all
i've examined the sway bar visually and it looks OK with no rust (california car since 1981) but of course something could be hidden when i get it apart. the current UCAs were installed about 70k and 7 years ago. oh and i have a ball joint separator. going to do the tie rods after the UCAs.
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1981 NA 300D 310k miles |
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Are you sure the uca are bad? 70k and 7 years use seems kinda young for replacements unless they were uro quality.....I have the original uca's on my car with 35 years on them....they look fine....
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both sides make all kinds of bad noises and the ball joint boots are completely torn. not sure what they are. the shop the PO took the car to usually did OK work, although they did put A1 Cardone calipers on.
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1981 NA 300D 310k miles |
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... noises are more often caused by LOWER ball joints...
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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! |
#12
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yes . i'm having the lowers done at a shop because i dont have the tools necessary to do them
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1981 NA 300D 310k miles |
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Have a helper and have some leverage. I seem to remember needing a good 4 ft or so of leverage. Some times I think it even took multiple pressures. Watch your fingers!
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http://superturbodiesel.com/images/sig.04.10.jpg 1995 E420 Schwarz 1995 E300 Weiss #1987 300D Sturmmachine #1991 300D Nearly Perfect #1994 E320 Cabriolet #1995 E320 Touring #1985 300D Sedan OBK #42 |
#14
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you can save some SIGNIFICANT money doing the lower's yourself... I and others rent the tools needed to pull the spindle for lower ball joint removal..
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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! |
#15
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I removed the spindles and brought only the spindles somewhere. Still cost me $45 a piece to remove and have no ones installed
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