Toothed belt for TDI and SDI diesel engines (VW Golf 4)

• 1 - bolt, 120 Nm and tighten to an angle of 90°.

When installing, a new bolt must be used. Turning the bolt 90° can be done in several stages;

• 2 - bolt, 120 Nm and tighten to an angle of 90.

A new bolt must be used during installation;

• 3 - bolt, 15 Nm;
• 4 - nut, 22 Nm;
• 5 - lower toothed belt casing;
• 6 - bolt, 10 Nm;
• 7 - middle toothed belt cover;
• 8 - bolt, 45 Nm;
• 9 - power unit support;
• 10 - Upper timing belt casing;
• 11 - toothed belt. Before installation, it is necessary to check the toothed belt for wear. Before removing the toothed belt, it is necessary to mark its direction of rotation. It is forbidden to bend the toothed belt;
• 12 - guide roller;
• 13 - bolt, 20 Nm and tighten to an angle of 90. When installing, it is necessary to use a new bolt;
• 14 - nut, 20 Nm;
• 15 - bolt, 20 Nm;
• 16 - bolt, 45 Nm;
• 17 - Timing belt pulley of the camshaft;
• 18 - tension roller;
• 19 - guide roller;
• 20 - pulley of the toothed belt of the high-pressure fuel pump;
• 21 - bolt, 30 Nm;
• 22 - rear timing belt cover;
• 23 - water pump;
• 24 - guide roller;
• 25 - crankshaft timing belt pulley;
• 26 - mounting sleeve;
• 27 - high pressure fuel pump (HPFP);
• 28 - bracket;
• 29 - bolt, 45 Nm

The timing belt tension on diesel engines is carried out by an automatic tensioning roller, which maintains optimum belt tension, resulting in increased service life and smooth running of the timing belt.