Mercedes Benz HPF Regulator Switch Unit Screw, Mercedes Benz. W116 6.9 and W126 (4-corner Hydraulic Suspension))
This screw is located on top of the HPF regulator aluminum block ist mounting the cam disk to the aluminum block . If the original screw is damaged or broken it can be replaced. Often time the old broken off thread need to be drilled out carefully.
If this work is too much for a DIY mechanic our repair shop at www.600airsuspension.com is offering renovation of the switch unit.
W116.036 450SEL 6.9
W126 500SEL , 560 SEL with self leveling hydropneumatic suspension (HPF)
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