SL55/63/65/R230 AMG: My 2007 SL55 Story - an ongoing project!




My trunk stopped opening earlier this summer. Funny story is that I was just telling my friend how much I enjoy the car despite it being fairly expensive to upkeep and that I've just gotten it to a state where I feel comfortable taking it anywhere without worries. I dropped her off and we couldn't get the groceries out of the trunk until I operated the top to open the trunk the other way. Long story short, I replaced the trunk actuator bellow with a reproduction one from eBay and carried on with my life.
I also replaced the double idler pulleys because I noticed the front pulley bearing had a slight wobble. I purchased a set of ASP pulleys through Eurocharged. Fit and finish look great!
The old:
ASP pulleys:
Comparison shot:
New pulleys installed:
The car has been running flawlessly to date. For those of your wondering about ownership costs, here's a rough estimate. Please keep in mind that I do all of the work myself and this spreadsheet does not include labor. The car is just about to hit 136k miles.
I purchased a high mileage (158k) 2003 SL55 in mid August. Before I got to look at it the owner said it needed control arm bushings and the A/C charged. He wanted to get those addressed before selling it, and sent to to an independent MB specialist. Well, it turned out it needed a little more and the following was done 2 days before I purchased it: transmission service and conductor plate; A/C hose, compressor & drier; hose was damaged due to engine needing motor and transmission mounts, which was also done; and finally, both lower control arm bushings. Bill total $3,888.19. He also had records where in June he had the valve cover gaskets and the air filters replaced. Bill total $670.89. The final record from 2016 was the consumer battery was replaced in January. $419.90.
One final note, the roof was not operational when purchased, and I noted that at least the trunk locking hydraulic cylinder on the driver side leaked. The rubber seals at the top of the windows were wavy, and the prior owner (2nd owner) said he was told the front locking cylinder had been fixed before he purchased it.
With the knowledge of those recent repairs, I purchased it and have done the following:
DIY items:
Serviced differential $25.24.
Changed fuel filter $16.45.
Changed cabin filter $40.53.
Changed coolant $39.96.
Changed engine oil and filter $62.10.
Replaced driver side wiper blade. $10.64.
Shop assistance items:
Both trunk locking cylinders and the trunk raising cylinder had to be rebuilt. I've rebuilt over a dozen cylinders for R170,s, but couldn't find seals for the R230 other than the front locking one. Removed the 3 cylinders and had them rebuilt. $281.90.
Windows tinted. $170.07.
I need to do the ABC flush as well. Will probably replace the accumulators and pulsation damper while doing that. I will order the dip stick/cap as you did because mine is cracked as well. Another future item I want to do is replace the idlier and tensioner pulleys. I've had those fail on 2 different R170's. May as well do the belts at the same time.
Love the way you've documented your work, even going as far as taking photos along the way. Good work.
Tim
Next thing I knocked out was the ABC flush. Not sure if it's been done before. It was dirty but wasn't terribly black. after about 6 liters, it was light green as it should be. I ran 2 more liters through, a total of 8.
I slacked on taking pictures of my flush setup, but here are the supplies I used.
I replaced the dipstick as the rubber cap was brittle and was starting to split at the seams. I also added the a magnetic inline filter to the return line as most people recommended. Topped everything off with OEM clamps I purchased from Pelican Parts.
The filter I used was "MAGNEFINE INLINE 1/2" MAGNETIC TRANSMISSION FILTER" purchased from ebay. The inlets required a bit of sanding to slide the factory hoses over.
I thought my ABC would be trouble free for a while... and it was until I decided to take the car out Saturday evening a few weeks later. I gave the car some gas through a long stretch of road and came to a stop and got a noise with a vibration at my pedal and steering wheel. I gave it some gas at green light and it had the "whrrr" noise from the pulsation damper. I confirmed later on using a long screwdriver as a stethoscope.
Long story short I ordered the part and replaced it. It took 5 mins and I could've done it in 2. I've never paid so much for a part so easy to replace. Pic of the parts:
Step 1: Brake cleaned the whole area. You don't want any dirt near the inlet.
Step 2: Break it loose with a 17mm 6 point socket. This is accompanied with a 5" extension.
Step 3: Unscrew the pulsation damper and remove by pushing on the hose as seen in the following pic. I also carefully cleaned the area around the hole with a microfiber rag soaked in brake parts cleaner.
Here's the old one vs the new. The new one comes with a plastic cap you need to remove.
Step 4: Screw the new one on and torque down. Not too tight, but a a firm tightening will do.
Done! Here's how the engine bay looks to date. I replaced the belts somewhere along the way as well with a Conti acc. belt and a Gates HD for the S/C.
While the car was sitting around waiting for the damper to arrive, gave it a hand detail (Wash, clay, polish, wax) and threw some LEDs in for the city lights. They're bright as hell but too blue compared to the headlights. I'll end this update with this:
just curious, did you have to drain the ABC fluid to replace the pulsation damper? also after replacing did you have to do the Rodeo? I do not have access to a STAR Diagnosis system yet but working on it. I will have to replace my one soon. great post BTW. Thanks!







just curious, did you have to drain the ABC fluid to replace the pulsation damper? also after replacing did you have to do the Rodeo? I do not have access to a STAR Diagnosis system yet but working on it. I will have to replace my one soon. great post BTW. Thanks!



The Best of Mercedes & AMG








Now as far as the downs, it's the trunk again! I've already had to deal with the trunk not opening in the past because of the broken air actuator on the trunk latch. That was replaced and to my surprise in Feb, it was not opening again and my doors weren't locking either. I found the PSE pump fuse blown and it blew again immediately when I replaced it. The symptoms pointed to the PSE pump located in the trunk. I opened it up and found the impeller shattered.
Here you can see it the problem.
I got my hands on a damaged PSE pump and salvaged the unbroken impeller and put mine back together.
It went back together and with a new fuse, everything functioned again.
I really thought that was the last of the trunk issues but a month later, the soft close stopped working. I took the latch apart again to find a hairline crack on one of the tubes. Thanks to the DIY on here, I ran to Home Depot for some Gorilla Epoxy and was able to quickly resolve it.
Here you can see the hairline crack and the silver bearing that plugs the port.
I clamped it to the block of wood and coated all of the ports with two layers of epoxy. I highly recommend Gorilla Epoxy! For $5, it was easy to work with and dried quickly.
I let it dry for about 45 minutes and put everything back together. All groovy!
I'll snap some new pics after a spring detailing!
Last edited by desired_speeds; Apr 4, 2017 at 04:14 AM.
Thanks again!
Shaun



I have a question or two on changing out the pulsation damper for you or anyone else who sees this: on my 09 SL550, it seems like the top of the damper is blocked by the edge of the valve head. I have read that simply removing the top pump bolt and loosening the bottom one will allow for a SLIGHT clockwise tilting of the pump to clear the top of the damper for removal.
1) This seems to NOT be an issue on your engine?
2) I have read that I should find a "skinny wrench" for loosening the damper by the underneath fitting (on the shank) but it seems on inspection that there is NO ROOM to get under the "bulb" of the damper. But it looks from your pics as though the damper can be safely loosened, and new one tightened, by the top hex fitting?
3) Did you in fact use a torque wrench to tighten the new one? If so, what torque pressure? or just a "snug fit"?
4) I gather from your experience (and others I've read) that the ABC system "never knows you've been there" when you replace the damper? Only follow-up is operating the raise/lower button several cycles? and...
5) Did you in fact follow the suggestion of carguyshu and do the strut bleed?
Thx lots for any comments!
Anyone ever have any experience with a reman. damper?




I have a question or two on changing out the pulsation damper for you or anyone else who sees this: on my 09 SL550, it seems like the top of the damper is blocked by the edge of the valve head. I have read that simply removing the top pump bolt and loosening the bottom one will allow for a SLIGHT clockwise tilting of the pump to clear the top of the damper for removal.
1) This seems to NOT be an issue on your engine?
2) I have read that I should find a "skinny wrench" for loosening the damper by the underneath fitting (on the shank) but it seems on inspection that there is NO ROOM to get under the "bulb" of the damper. But it looks from your pics as though the damper can be safely loosened, and new one tightened, by the top hex fitting?
3) Did you in fact use a torque wrench to tighten the new one? If so, what torque pressure? or just a "snug fit"?
4) I gather from your experience (and others I've read) that the ABC system "never knows you've been there" when you replace the damper? Only follow-up is operating the raise/lower button several cycles? and...
5) Did you in fact follow the suggestion of carguyshu and do the strut bleed?
Thx lots for any comments!
2)Yes, I loosened it from the top hex.
3) I did not use a torque wrench. I was unable to find the proper torque spec at the moment and just gave it a snug tightening. It's hard to find info on ABC 2 systems. :S
4) That's all I did. There wasn't any fluid overflowing at the mounting hole.
5) I did release the fluid from the bleed nipple. Fluid was very dark and I recommend doing it. It takes an 11mm wrench.




Thanks very much for your reply and info.
Reid C
I will be making a photo and/or video record of my R&R and final results.




It just ticked over 152k miles and the paintwork finally got a little attention. It took multiple sittings with a few hours spent each day and I'm really pleased with the results.



EJbrock


