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Community work recordR230 SL500

2006 Mercedes R230 SL500 hydraulic-line repair account

Silver Light traced a sudden loss of ride height and fluid leakage to a split flexible line on his SL500. He documented a locally made replacement section and reported restored suspension operation, without a long-term follow-up.

Edited by Future Classic ·

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A sudden drop in ride height

Silver Light described a thud, a drop in ride height and hydraulic fluid leaking from the front of his 2006 SL500. About an hour after reaching home, the car had settled to its lowest position and displayed a warning not to drive. He then had it towed to a dealer.

Replacing a section rather than the complete line

The dealer identified a split flexible hydraulic line and proposed replacing the complete line; pump condition was still uncertain. Back at his workshop, the author and a mechanic friend located the damaged flexible section. They retained portions of the original hard line and used a replacement flexible section with fittings. The author described sanding the hard-line ends because the compression collars were slightly smaller than the tubing. This was his modified assembly, not a documented direct-fit replacement.

The retained hard-line end and loose fitting.
The retained hard-line end and loose fitting.
The hard line with the author’s cut-location mark.
The hard line with the author’s cut-location mark.
The fitting at the modified hard-line end.
The fitting at the modified hard-line end.

The assembled replacement section

A shop permanently attached the fittings to the new flexible section, which the author then connected to the retained hard line and distribution block. His photographs show the assembled hose and its installed position. They do not establish the pressure rating, compatibility or durability of the complete assembly.

The replacement flexible section with attached ends.
The replacement flexible section with attached ends.
The replacement line installed beside the reservoir area.
The replacement line installed beside the reservoir area.

The result the author reported

After refilling the reservoir and working air out of the system, Silver Light reported that the suspension operated again and the existing pump worked. He recorded roughly 19–20 hours of work and $129 in parts, excluding his labor. Those are the costs and immediate outcome of this 2019 account; no later durability report appears in the thread.

The follow-up fitting photograph

A reader asked whether the fitting was 10 mm. Silver Light responded with a Gates package photograph, rather than explicitly confirming that dimension. The visible label reads G25510-0606 and 6G-6MFA. This identifies the photographed package; it does not verify every fitting or hose specification used in the repair.

The Gates package shown in the follow-up.
The Gates package shown in the follow-up.

Based on the source author’s work record.

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