Under the air cleaner, there is a ball bearing crank. It is toward the front and has 3 links on it. You have to take out the c-clip and clean and grease this. If you don't you will blow the engine up.

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Benzmac:
Donnie Drummonds
1991 GMC Syclone
ASE CERTIFIED MASTER AUTO TECHNICIAN
SERVICE MANAGER FOR 14 BAY FACILITY
MERCEDES SPECIALIST 8 YRS
PARTNER IN MERCEDESSHOP.COM