Please pass the Grey Poop-on

[dpkreuze]

Friends,
I tried to register for www.m-100.cc. After waiting for a confirmation I read in the Forum rules that a registration confirmation comes after one pays $50. So be it.
I really need some help finding resources to repair a 100.012 600SWB. The deluxe hydraulic pump for the windows is leaking. I have tried to share my resourses as a MB tech on the "Tech Help Forum" . I have worked on these automobiles since 1976. I have seen my share of vintage cars. I know, I know, I'm whining. WAAA WAAA.
It's not my car. However, can you help me help someone?
Don

[teezer]

might try this

http://www.mbgrand600.com/

[Tomguy]

Wow, that's shady! The forum says "Free to register" and then you go to, and it says that they only accept it if you're a paid member of the M100 group! I don't think it was always that way - it surely would not make sense if it were. I'll never refer anyone there again. The internet is full of places that can give free advice! Peruse here, do a search, maybe some more experienced m100 owners like Gerry will come along!

Edit: Got the registration link @ 10:25AM today, dont know if it was an error on their side or what...

[Stretch]

I'm not sure if my suggestion will be popular but the way I see it is that hydraulics are hydraulics are hydraulics - if all else fails why not take the part to a hydraulic repair shop that specialises in aviation repairs?

I'm sure they will be competent enough to give the pump some sort of visual inspection and recommend a course of action.

I understand that some may consider my approach to the problem to be a bit unsympathetic to such an expensive vehicle (I'm not looking for a fight!).

This is probably stating the obvious but from my personal experience of working in an aviation hydraulic workshop most of the problems come from corrosion and of course wear. It is often considered to be uneconomical to repair parts that require machining - however all is not lost get an expert opinion first.

[JMela]

Re: the m-100 board, Are you going Message board/ register? "Registration is free" says the page's 'FAQs' section...

[berfinroy]

You're talking about an early '90s car, aren't you? The 100 club is dedicated to the 600 "Grand" Mercedes of '64-'81, the 300SEL 6.3 of '68-'71, and the 450SEL 6.9 of '75-79, all of which used the "M100" V-8. So that site probably wouldn't be much help, althought the 6.9 did have the first generation hydopneumatic suspension system (the others had air suspension).

[Tomguy]

I believe he means a 100.012 600 Grand SWB. From what I have SEEN in pictures in the past the pump in question is a combo pump for the air suspension and the power steering.

[dpkreuze]

Thanks for the prompt responses. Here's what I read:"Once you click the "SUBMIT" button at the bottom of the window, an email will be sent to the Forum Administrator for review. If you are a paid member of the International M-100 Group, your registration will be accepted, and you will receive a verification request via email. You MUST respond to this email to activate your account."
I am a Capitalist and proud of it. They deserve the money. The owner of this automobile wants to put it into hibernation before the snow flies. I'm a flat-rate dealer technician. The repairs on this beauty will get expensive if I do all the research and parts procurement for the owner. Time is of the essence now.
If it were my car that pump would be on the bench in as many pieces as needed to locate the cause of the hemmorage. (or hemmorrhoid)
Don

[Pooka]

I think all of these Grand Mercedes 600 hydraulic parts are made by Bosch. You may be able to contact them and they may be able to put you in touch with someone who can help you out with the problem.

You can also contact a place called Star Motors in (I think) New York that could answer your questions or deal with your situation. Since this is a customers car you could just repair it to the point your customer is happy with. Star Motors has a very complete web site with a lot of info on the air valves for this car. I don't remember if they cover the hydraulics in such depth or not.

The hydraulic pump, as I recall, mounts inline with the suspension air-compressor, the power-steering pump and then the system hydraulic pump making the hydraulic pump one of the few things on this car that is easy to remove. I have never had one of these apart, but they are just hydraulic pumps and can be rebuilt like any other pump if you have the seals. Star Motors would be able to advise you on this.

By the way, Star Motors has been around for a long time and has a good rep when it comes to working on 108/109 and Grand Mercedes cars. Their parts are not cheap, but name something on a 600 that is.

www.starmotorsny.com

[Txjake]

Originally Posted by Army

I'm not sure if my suggestion will be popular but the way I see it is that hydraulics are hydraulics are hydraulics - if all else fails why not take the part to a hydraulic repair shop that specialises in aviation repairs?

I'm sure they will be competent enough to give the pump some sort of visual inspection and recommend a course of action.

I understand that some may consider my approach to the problem to be a bit unsympathetic to such an expensive vehicle (I'm not looking for a fight!).

This is probably stating the obvious but from my personal experience of working in an aviation hydraulic workshop most of the problems come from corrosion and of course wear. It is often considered to be uneconomical to repair parts that require machining - however all is not lost get an expert opinion first.

x 2, a large truck shop or an ag shop would have th egeneral knowledge on repairing a system. If proprietary tools are required, that might negate this option.

[Pooka]

Star Motors has a PDF file for these cars that might be easier to find at this web site. I could not find a price for a rebuilt hydraulic pump, but they priced a 'fingertip pump' at $1500. Could this be something like the hand-pump on a 240D?

www.300sel.com