Intake manifold
A – naturally aspirated engine,
B – turbocharged engine,
1 – manifold, 2 – receiver, 3 – cylinder head mounting brackets, 4 – boost radiator, 5 – air pipe between turbocharger and radiator, 6 – turbocharger, 7 – intake manifold, 8 – seal, 9 – oil supply pipe, 10 – oil return pipe, 11 – intake manifold seal
Gas distribution system
1 – crankshaft, 2 – oil pump chain drive sprocket, 3 – pulley, 4 – pulley, 5 – toothed belt, 6 – idler roller, 7 – belt tensioner, 8 – camshaft, 9 – tappet, 10 – valve
Partial removal of the timing belt (its upper part) is essential when removing and installing the cylinder head or camshaft, as well as for adjusting valve clearances.
Complete removal of the timing belt is necessary when removing and installing the sprocket and chain of the oil pump drive, when removing and installing the coolant pump, when replacing the crankshaft sealing ring on the belt side, and for removing the sealing ring plate. Both types of belt removal are described together.
1. Remove the ground cable from the battery.
2. Turn the steering wheel to the right and remove the plastic protective cover from under the right wing.
3. In XUD 7TE engines, remove the air duct located between the filter and the turbocharger.
4. Remove the glow plugs.
5. Place a support underneath the engine on the camshaft drive side or support the engine on the right side with a jack.
6. Remove the right engine mount.
7. Release the tension roller and the generator fastening elements. Remove the V-belt.
8. Remove the lower cover latch and remove the hooks.
9. Remove the camshaft drive housing.
10. Remove the rubber support element.
11. Install the engine components in their original position and place the locking elements (3 bolts and locking rod) in the flywheel, in the camshaft pulley and in the high-pressure fuel pump pulley.
12. Release the tension roller fastening elements.
13. Using a square head wrench, pull back the tensioner pulley and tighten the tensioner pulley nuts.
14. Remove the lower clutch housing plate and insert the flywheel locking device.
15. Unscrew the shock absorber wheel and remove it together with the plastic cover.
16. Remove the timing belt.
Caution! The toothed belt must not be bent. In addition, it must not have contact with oil, water, coolant or grease.