Polar Bear

Just wondering if there are any "gotchas" when replacing this hydraulic line on the ABC system before I start. Does the car need to be on a lift to do the job? Hoping the ones experienced here in ABC can provide a few pointers. It would be much appreciated!

I have attached a document describing the process which I think will be beneficial to complete this job in a straightforward manner and it doesn't look too bad (too bad it does not cover the car in question!) but it should apply to S600s and S65s as well in the W221 chassis.

Thanks!

JohnLane

As with so many tasks.... Much more easily done on a hoist.

A mess will be made. Be sure that all hose ends ect are utterly clean before disassembly.

Take your time. Don't over torque fasteners.

Polar Bear

When you mention hoist, I am correct you are referring to a lift? I have read that the engine may need to be slightly jacked up to remove some of the Torx bolts.

What have you found the best way to prepare the system before beginning work (other than cleaning all fittings and hose ends) such as relieving pressure, etc? It looks like SDS will open the check valves located at the shocks and allow the fluid to flow back into the system, but if the pump hasn't been running and SDS shows only 3 bar of pressure, I imagine it would cause a mess but not be anything that would likely cause injury?

JohnLane

Yes; Lift, hoist.... Whatever you prefer to call it. Doing much of anything under these big heavy cars with acres of plastic underneath on jack stands smells to me to be an exercise in futility + a fine way to end up injured!

Bleed off pressure via the conveniently located bleeders located under the car. Pull fender liners where it makes sense to do so. With the plastic out of the way all is much easier to see.

knowbenz

The only lines that will be pressurized when the vehicle is turned off are the ones between valve block and struts. All the other lines the pressure will bleed down with the car off. Clean around the fittings and go to town

Polar Bear

I appreciate the helpful responses from everyone! Will follow up when done!