Pic. 183. Checking the wear of the driven disk using a template: a - a slot for checking on cars with a left-hand drive; b - a slot for checking on cars with a right-hand drive; 1 - working cylinder; 2 - plastic pad; 3 - push rod; 4 - template (factory specification number 115 589 07 23 00)
Pic. 184. Checking the wear of the driven disk (in case of critical wear, the template does not enter the corresponding slot)
The plastic lining on the slave cylinder, located between it and the clutch assembly, is machined with two inclined, downward grooves. In the clutch assembly, they look like slots into which the template is inserted. The pressure rod of the working cylinder has a variable diameter. The smaller diameter of the rod corresponds to the slot of the template, the latter enters the groove, as shown in fig. 183. When checking this, this will be confirmed by the fact that the notches made on the sides of the template will hide in the slot of the groove. This means that the driven disk is not worn out yet. If the template does not fit into the slot, then the cylinder rod is located opposite the slot with its large diameter (pic. 184). This indicates wear on the friction linings of the driven disk, and it should be replaced.