6 Belt drives Servicing and maintenance works © 2009 55 z Measure the gap between the journal of the mov- able tensioning arm and the stop of the fixed housing. z If gap "a" is less than 3 mm, the belt must be re- placed. Check belt length z Press tensioning pulley (1) with pin wrench (3) in the direction of the arrow until a holding pin Ш 6 mm (4) can be fixed in the assembly bore. The V-rib belt (2) is now free of tension. z First remove the V-rib belt (2) from the smallest pulley or from the tensioning pulley. z Mount V-rib belt (2). z Retain tensioning pulley using the pin wrench and remove the holding pin. z Re-tension using the tensioning pulley and pin wrench (3).
Check whether the V-rib belt is cor- rectly in its guide. Replace V-rib belt