This one uses shoes inside the drum to hold...You can adjust with a 13mm in the center of the car. It has two cables coming out of it. You may need a lift to get to this adjustment.

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Benzmac:
Donnie Drummonds
1992 500E (very soon I hope
1981 280GE SWB
ASE CERTIFIED MASTER AUTO TECHNICIAN
SERVICE MANAGER FOR 14 BAY FACILITY
MERCEDES SPECIALIST 8 YRS
PARTNER IN MERCEDESSHOP.COM