This is the result of corrosion seizure.

The wheel alignment shop tried to adjust this corroded assembly, with obvious results.

FYI: In most cases you will find it cheaper and easier to replace the assembly, rather than the individual pieces.
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__________________
ASE Master Mechanic

Prototype R&D/testing:
Thermal & Aerodynamic System Engineering (TASE) Senior vehicle instrumentation technician.
Noise Vibration and Harshness (NVH).
Dynamometer.
Heat exchanger durability.
HV-A/C Climate Control.
Vehicle build.
Fleet Durability
Technical Quality Auditor.
Automotive Technical Writer

1985 300SD
1983 300D

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