The spur gear drive of the balancer shaft module must be installed with a tooth profile clearance of 0.038...0.072 mm. To achieve the required tooth profile clearance, the new idler gear is coated with the appropriate thickness. The coating is located on individual sections of the perimeter on the teeth. Over a short period of time, the coating wears out and the necessary gap appears. A new balance shaft module should always be installed with a new coated idler gear. Replace bolts that were overtightened. There is a danger of the thrust bearing washer slipping behind the idler gear. When installing the balance shaft module, do not loosen the shaft idler gear bolt more than specified. Mounting position of the thrust bearing washer. Loosen the bolt -1- of the idler gear by approximately 45°. If there are no installation sleeves on the cylinder block for centering the balancer shaft module, insert the installation sleeves. Place the balance shaft module on the cylinder block. The idler gear coating must not be damaged.
Tighten the balance shaft module bolts.
Secure the balancer shaft using the locking device -T10255-; if necessary, rotate the shaft. The pin of the locking device must fit into the groove of the balancer shaft.
Carefully place the gear on the balancer shaft, while moving the idler gear slightly to the side. The idler gear coating must not be damaged. The threaded holes of the balance shaft should be located as centrally as possible in the longitudinal holes of the balance shaft gear. If the longitudinal holes in the balance shaft gear do not line up with the threaded holes, it is necessary to turn the gear by the appropriate number of teeth and reinstall it. Tighten the bolts -arrows- for the balance shaft gear. Remove locking device -T10255-.
I
The following 3 work steps must be completed simultaneously (Need help from a second mechanic). Press the idler gear -3- firmly, if necessary using a wooden block, -in the direction of the arrow- into the gear mesh of the gear -2- and the balance shaft gear -1-. At the same time, turn the balancer shaft gear slightly counterclockwise. Tighten the idler gear bolts. Remove the fuel lock. high pressure pump -3359-. After installation, there should be no rotational play on the intermediate gear. This can be checked manually without much effort.
Installation is in reverse order, observing the following. Install the oil pan.
Visitor comments