Genuine Mercedes-Benz C320 Cam Gear

Mercedes-Benz C320 Cam Gear Parts and Q&A

• Timing Gear Set
  112-050-02-04
  Q: How to remove, inspect, and install the cam gear and camshaft in the Four-cylinder engines on Mercedes-Benz C320?

  A:

  Take the cable off the negative side of the battery and pull off the Valve Cover and upper timing cover at the front of the Cylinder Head. In 2002 models, cylinder number one With the type 111 motor, turn the engine until the 30 mark matches the pointer on the timing cover at a 30-degree After TDC to avoid interference between the valve and the piston. Label correspondingly with paint on the sprockets and the links of the chain to be reassembled and then remove the alternator. Relax the tensioner of the timing chain and undo its screw, trying not to lose its sealing ring. Take the sprocker off the exhaust camshaft, leaving the camshaft in position, and then take the timing chain off the intake camshaft sprocker, instead of leaving it on the sprocker, holding it with a piece of wire. To reduce tension on the cam lobes, check the markings on the camshaft bearing caps, and detach the caps in their order before trying to remove the camshafts, and always have the caps in their place. On 2003-2005 models using the type 271 engine, rotate engine to TDC cylinder 1, apply matching paint dots, push tensioning rail to provide slackness to remove chain off intake camshaft sprocket. Slacken the bearing cap bridge bells, break away the upper part, and drag the timing chain to remove the cam-followers, holding the chain-up by wire. In case of removal of sprockets, loosen sprocket center bolt whilst holding up the camshaft. Check the camshaft secondary sprockers, check the chains with cracks, and check the tensioner of the chain with too much wear, replacing any damaged parts. Once camshaft is cleaned, scanned lobe height of each cam Lobe, checked bearing journals, replaced upon change more than 0.010 inch should be checked. Examine camshaft lobes to determine whether they are in a worn or discoloured state and provides that they are satisfactory, may be reused. This is done by greasing the lobes of the camshaft and bearing journals, then attaching the camshafts, and centering the sprockets by reference to the paint marks. When using type 271 engines, the chain has to go round the second camshaft so you pull the camshaft guide back to accommodate it. Install bearing caps / bearing cap bridge and tighten bolts hand tight, and then torque in the correct order. Install new tensioner body and end piece, then attach Sealing rings, clamp them to the recommended torque, and carry out the rest of the installation by reversing the order of removal.