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#16
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Quote:
Scott
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Scott 1982 Mercedes 240D, 4 speed, 275,000 1988 Porsche 944 Turbo S (70,000) 1987 Porsche 911 Coupe 109,000 (sold) 1998 Mercedes E300 TurboDiesel 147,000 (sold) 1985 Mercedes 300D 227,000 (totaled by inattentive driver with no insurance!) 1997 Mercedes E300 Diesel 236,000 (sold) 1995 Ducati 900SS (sold) 1987 VW Jetta GLI 157,000 (sold) 1986 Camaro 125,000 (sold - P.O.S.) 1977 Corvette L82 125,000 (sold) 1965 Pontiac GTO 15,000 restored (sold) |
#17
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I just rebuilt the front end and had an alignment done, so I am quite confident it is to spec, I was just hoping to add a hair of negative camber with out throwing off the rest of my fresh alignment.
The outer 1" of tread is where the tires are worn. No saw tooth pattern or anything. The wear did occur before my front end rebuild and alignment, but I really thing the wear is from hard cornering rolling the tire.
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1979 240D- 316K miles - VGT Turbo, Intercooler, Stick Shift, Many Other Mods - Daily Driver 1982 300SD - 232K miles - Wife's Daily Driver 1986 560SL - Wife's red speed machine |
#18
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exactly what happened to me on my sd. I ate through a decent set of tires quickly. I just rebuilt the front and had it aligned. I also think it may be destroying them quickly from hard cornering, which is why im getting 15 inch wheels. 14 inch wheels are obsolete and its time to move on
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1981 300SD 512k OM603 |
#19
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What is the toe-in spec for the 123 cars in mm or inches (not degrees)? My front tires are wearing on the inside (worse on the RF). I just rotated the tires from front to back and don't want to wear them down prematurely.
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85 300D turbo pristine w 157k when purchased 161K now 83 300 D turbo 297K runs great. SOLD! 83 240D 4 spd manual- parted out then junked |
#20
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Quote:
Scott
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Scott 1982 Mercedes 240D, 4 speed, 275,000 1988 Porsche 944 Turbo S (70,000) 1987 Porsche 911 Coupe 109,000 (sold) 1998 Mercedes E300 TurboDiesel 147,000 (sold) 1985 Mercedes 300D 227,000 (totaled by inattentive driver with no insurance!) 1997 Mercedes E300 Diesel 236,000 (sold) 1995 Ducati 900SS (sold) 1987 VW Jetta GLI 157,000 (sold) 1986 Camaro 125,000 (sold - P.O.S.) 1977 Corvette L82 125,000 (sold) 1965 Pontiac GTO 15,000 restored (sold) |
#21
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I just measured the toe-in. I don't have any! It's toe-out-ed by3/8". I couldn't find the spec in the owners manual nor the Haynes. Anybody know what the spec should be?
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85 300D turbo pristine w 157k when purchased 161K now 83 300 D turbo 297K runs great. SOLD! 83 240D 4 spd manual- parted out then junked |
#22
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Quote:
Scott
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Scott 1982 Mercedes 240D, 4 speed, 275,000 1988 Porsche 944 Turbo S (70,000) 1987 Porsche 911 Coupe 109,000 (sold) 1998 Mercedes E300 TurboDiesel 147,000 (sold) 1985 Mercedes 300D 227,000 (totaled by inattentive driver with no insurance!) 1997 Mercedes E300 Diesel 236,000 (sold) 1995 Ducati 900SS (sold) 1987 VW Jetta GLI 157,000 (sold) 1986 Camaro 125,000 (sold - P.O.S.) 1977 Corvette L82 125,000 (sold) 1965 Pontiac GTO 15,000 restored (sold) |
#23
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The W123 front suspension is very finicky to align, every adjustment you make will affect every other measurement, it takes some time to get everything to come together, when I used to do alignments every day we used to hate to see a W123 coming.
That being said, it is impossible to just make a camber or toe adjustment arbritrarily without affecting everything--don't do it. Take the car somewhere it can be done right. Also, I have seen at least two posts concluding that probably hard cornering was wearing their tires. It would seem obvious the solution would be to drive normally?!! |
#24
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Fair enough question since you don't know me. I've aligned toe-in's on all my cars using the tool I made (pics below) for many years and never had uneven tire wear issues. It's a simple, easy and cheap tool to make and is very accurate and repeatable. It is basically a fixed caliper with 2 push pins on the tip of each arm. A piece of masking tape is put on the rear of the front tires and the caliper pins is pushed through the tape into the rubber. As the pin is removed I circle the pin hole mark with a pen to make it easy to spot later. The car is pushed forward so that the front tires rotate 180 degrees and the the caliper in put on the front of the tire as shown. First put one pin on one mark previously made, then the difference from the other mark to the other pin is the total toe-in. It takes about 2 minutes to get a reading. I adjusted the toe-in at the Home Depot lot and set it to 1/16" total toe-in. It was a PITA to loosen the outer clamp and the nut as it was pretty rusted in place. I sprayed it with lots of "Free All" and it still took a lot of work. The outer sleeve is slotted so it can be clamped securely but the slots allows more rust to develop. One end has a tappered slot with a nut forcing a bushing.over the taper. I had to turn it back and forth with a pipe wrench 1 degree at a time to break it free. Probably spent an hour laying on the ground and turned it about 1 turn.
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85 300D turbo pristine w 157k when purchased 161K now 83 300 D turbo 297K runs great. SOLD! 83 240D 4 spd manual- parted out then junked Last edited by funola; 08-31-2009 at 11:15 PM. |
#25
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If all that is true and you've got 1/16 inch total toe you should be good to go. Scott
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Scott 1982 Mercedes 240D, 4 speed, 275,000 1988 Porsche 944 Turbo S (70,000) 1987 Porsche 911 Coupe 109,000 (sold) 1998 Mercedes E300 TurboDiesel 147,000 (sold) 1985 Mercedes 300D 227,000 (totaled by inattentive driver with no insurance!) 1997 Mercedes E300 Diesel 236,000 (sold) 1995 Ducati 900SS (sold) 1987 VW Jetta GLI 157,000 (sold) 1986 Camaro 125,000 (sold - P.O.S.) 1977 Corvette L82 125,000 (sold) 1965 Pontiac GTO 15,000 restored (sold) |
#26
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I agree.
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Easier said than done. Most alignment shops are staffed by lazy sob's who care more about getting your car out in 30 minutes than taking the time to do it right. I've easily spent 3 or 4 hours aligning my car to get it right. But I make sure my camber is dead on, not even a 1/10 of a degree off. Scott
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Scott 1982 Mercedes 240D, 4 speed, 275,000 1988 Porsche 944 Turbo S (70,000) 1987 Porsche 911 Coupe 109,000 (sold) 1998 Mercedes E300 TurboDiesel 147,000 (sold) 1985 Mercedes 300D 227,000 (totaled by inattentive driver with no insurance!) 1997 Mercedes E300 Diesel 236,000 (sold) 1995 Ducati 900SS (sold) 1987 VW Jetta GLI 157,000 (sold) 1986 Camaro 125,000 (sold - P.O.S.) 1977 Corvette L82 125,000 (sold) 1965 Pontiac GTO 15,000 restored (sold) |
#27
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oh, there sure is a lot of rust on that poor car. where do you live?
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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! |
#28
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John, please describe the PVC tube/nail and how it's used. The wood is luan plywood epoxied to the aluminum screen door frame strip. The whole thing is very light and stiff relatively, which allows it to hang on the tires like that and give repeatable measurements.
The suspension on this car has other issues which I will have to take care of. The toe in adjustment I made yesterday is to prevent ruining the 2 good tires rotated from the rear to the front. I should have checked the toe-in when I had new tires put on 15,000 miles ago. Being that it was not a daily driver then, I didn't check it and then forgot about it till I started having brake problems a few weeks ago and discovered worn front tires in the process..
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85 300D turbo pristine w 157k when purchased 161K now 83 300 D turbo 297K runs great. SOLD! 83 240D 4 spd manual- parted out then junked |
#29
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a section of pvc, or metal EMT with a nail driven through it. some attach a yard stick to the tube, for measurements. at the alignment shop I worked at, they had a special tool with cast 90° ends on it for this. bottom line is you need perfect repeatable measurable marks on the tires. at the shop, we set the tool up on the front, spun the tires around to make a perfect line along the circumference of the tire, then brought the tool to the rear, and measured the difference. of course, you have to have all the weight on the car when you make the measurements, so using tape on the 123 tires is a good idea. at the shop, we never worked on any MB's... just about everything else though. had an alignment pit. with rotators at the end, drove out onto the rotators, made the marks, bottle jacks picked up the front end at the LCA's and we made all the measurements and adjustments.
with your tool, I'd attach a pair of squares to the wood, or something to VERIFY the wood isn't flexing or moving during your measurements.
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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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