I've seen that. But I'm stumbled on how to get the trunk into "extended" position like in picture 6. Although I already managed to remove the pump without removing the side panel. It's a bit flexible and it gave me some place to play with it! But still it will be good to know how to get the trunk into that position... Any ideas?
Alright, got this sucker out! I must say it's a tight squeeze so BE PATIENT! And thin hands and fingers is a Must!
It's held by two bolts and there's a lip/arm extending to the bottom which fits into the opening somewhere "in the deep". If you reach your hand you'll feel it
Also disconnect the wiring harness (two connectors). Small flat head screwdriver might be handy!
The hydraulic lines are secured by plates which in their turn are secured by three bolts! NOTE: Be careful when removing these! DO NOT drop it!!! Keep your hands dry from hydraulic fluid!
As you can see the hydraulic hoses are numbered and correspond to numbers on the retaining plates. But I would strongly advise drawing a diagram with the numbers. So when you plug it back in it makes things a lot easier, since you can't see the numbers on plates in this tight area.
Here's my diagram. NOTE: Yours may be different! I don't know whether MB adhered to some standard!
After you disconnect the lines put some rag or paper towel to catch all the drops:
Unscrew the retainer which secures the plastic container! NOTE: DO NOT Over tighten the retainer when putting it back in! Risk of cracking the plastic container!
Just make sure it sits properly.
The plastic container simply slides off from the pump! NOTE: Be careful when taking it off! I used a flat head screwdriver to pry it a little bit! There's a rubber ring around it! MAKE SURE YOU DON'T DAMAGE IT!
My fluid was soooo bad and dark and I had some shavings on the bottom. Probably from deteriorated rubber seals and old hydraulic lines.
Here are some pics of disassembled pump:
And here's the plastic filter which was fitted onto a small pipe inside the pump. I used electrical connector cleaner to clean it. Make sure it's rubber safe!
It fits right on this small pipe:
And here's the filler hole. It's on the right. (The big one
). It's secured with the bolt and the seal ring! MAKE sure you DON'T DROP it when unscrewing and putting it back in!!! Be Very careful!
After you have cleaned everything and are ready to assemble. Crack that bottle with the new hydraulic fluid open and apply some of it with your finger to the rubber ring. This will create a leak proof seal! Also Make Sure the "pointing arrow" on top of the plastic container is leveled with the top
and the level marks are on the proper side
You can feel the pointing arrow with you fingers. It really stands out!
Now put your roof hydraulic pump back into the car. HINT:
I found it easier to do the following: The two rubber pads which slide onto the bolts have metal inserts. I found out that if you push those upwards a little bit, may be 2-3mm (don't push those out all the way or too far, otherwise it will be hard to get those back in and most likely you'll drop them into the "black hole"
) it makes it easier to sit the pump. Then push them back in. I used flat-head screwdriver! BE Careful Not to Damage the Plastic container or rubber supports themselves!
Reconnect all the lines and CAREFULLY
screw 3 retainer bolts back in! Take your time! Again, you Don't want to drop these into nowhere!!!
I used a syringe with the small clear silicone hose to refill it. Took me 3 and a half syringes to get to the mark! Roughly 220ml. MAKE SURE You don't Over fill the pump!!! There's no way you can drain it (other than disassembling it)!
I would recommend using a bright flashlight to see the level of the fluid! The new fluid is sooo clean you can't see the level with bare eyes. Just bring it close to the plastic tank, play with the position and you'll be able to see the level! This is Very Important!
As soon as you see that you're approaching the level mark stop, wait a minute or so till the fluid you just pushed in drains into the plastic container and settles. Wait a minute or so, since it's a slow process. Then I used 2-5ml increments to fill the rest. Right between the level marks!
Now close the filling hole! Again, Be Very careful not to drop the bolt with the seal ring on it! Watch the seal ring as it has a tendency to slip off if you don't secure it with you fingers!
Well, I think that's it! It's been raining for the whole day and I've been doing my work in between the rain and clouds =) So, didn't have a chance to test my roof. But I'll report the results tomorrow!
Update: I tested the roof the next day after it stopped raining! The first run was a bit slow. I think because the fluid was fully drained and the lines were empty. And then it got faster and faster =) Everything works fine!
I also gave my trunk and door hinges a slight treatment with lithium grease
Oh, btw there you will see the trunk cylinder. This is a long one... Fortunately these don't leak in %99 of cases. So, hopefully you are the lucky one!
Thank you lilred320SLK for you guide and a push to clean it and just be done with it! I'm glad I spent my time! This fluid was nasty...
I think I really deserved a cold beer today!