Application: Mercedes Benz (M271) (A) - Use for drawing in the timing chain. Retain the timing chain with the camshaft sprocket in mesh. Make it possible to position the camshaft in the installed position. (B) - Make it possible to slacken and tighten the bolts attaching the camshaft gear. (C) - To install the plug into the timing case covering (access to the chain tensioner). (D) - For unloading the timing chain tensioning device. Release the timing chain (1). To do this, (D) in the timing case and push back the tensioning rail (2). (E) - For removal of the crankshaft front gear wheel. Release the timing chain (1). To do this, insert (B) in the timing case and push back the tensioning rail (2).