2. Drain the coolant.
3. Set the piston of the 1st cylinder to TDC of the compression stroke.
4. Remove the air filter and cylinder head covers.
5. Loosen the rocker arm shaft bolts.
6. Remove all belts, fan shroud and air conditioner belt tensioner pulley.
7. Remove the tensioner pulley.
8. Disconnect the lower radiator hose from the pipe and loosen the clamp on the other end of the pipe.
9. Unscrew the bolt and remove the pipe.
10. Unscrew the timing belt cover bolts (photo). The bolts should be marked so that they can be installed in their original places during assembly.
10.10a Timing Belt Covers
1. Lower front cover (on 4x2 vehicles); 2. Lower front cover (on 4x4 vehicles); 3. Upper front cover; 4. Back cover
10.106 Toothed belt and drive components
1. Cylinder block; 2. Mounting pin; 3, 14. Asterisk; 4. Spring; 5. Tensioner; 6,8,13. Washer; 7. Leading sprocket; 9. Pulley; 10,11,15. Lid; 12. Conical washer
11. Make sure that all marks on the 3 sprockets are aligned with the fixed pointers (in the form of marks on the belt covers and pump body, photo). Otherwise, turn the crankshaft until the marks are aligned by screwing in the damper bolt.
10.11 Timing marks on belt sprockets
1, 3, 6-labels; 2. Back cover; 4, 9. Left (right) camshaft; 5. The piston of the 1st cylinder is at TDC of the compression stroke; 7. Oil pump; 8. Leading sprocket
12. Loosen the roller nut (photo).
10.12 Belt tensioner roller nut
13. Remove the belt. Check the freedom of rotation of the roller (photo).
10.13 Checking the video
14. Before installing the belt, turn the tensioner clockwise by 70-80° and tighten the lock nut (photo).
10.14 Preliminary adjustment of the tensioner
15. Install the belt so that the arrow faces forward.
16. Align the white marks on the belt with the marks on the sprockets (photo).
10.16a Alignment of the belt marks with the marks on the camshaft sprockets.
10.16b Before loosening the lock nut, make sure that the mark on the drive sprocket is located opposite the mark on the oil pump housing
Adjustment
17. Loosen the tensioner lock nut and turn the tensioner 70-80° clockwise again (photo).
10.17 Belt tensioner
1. Spring hook; 2. View along arrow A; 3. Hairpin; 4. Spring
18. Slowly turn the crankshaft clockwise by 2-3 turns and again set the piston of the 1st cylinder to TDC of the compression stroke. If there is a large resistance to rotation, return the crankshaft to its original position and check the alignment of the belt and pulley marks.
19. While holding the tensioner, loosen the lock nut.
20. Apply a 0.35 mm feeler gauge to the tensioner (photo).
10.20 Apply the feeler gauge to the indicated location...
1. Crankshaft; 2. Belt; 3. Width 0.500 mm; 4. Thickness 0.35 mm; 5. Probe; 6. Place of application of the probe; 7. Tensioner roller
21. Slowly turn the crankshaft until the feeler gauge is between the tensioner and the belt (photo).
10.21...and turn the crankshaft until the feeler gauge is between the tensioner and the belt
1. Probe; 2. Crankshaft; 3. Belt; 4. Roller
22. While holding the tensioner, tighten the lock nut.
Original text on the website: Nissanbook.ru
23. Turn the crankshaft and remove the dipstick.
24. Slowly turn the crankshaft clockwise 2-3 turns and again set the piston of the 1st cylinder to TDC of the compression stroke.
25. Check the belt tension according to the diagram (photo).
10.25 When checking, apply force in the middle between the sprockets. The deflection should correspond to the specified
1, 2. Camshafts; 3. Belt
26. Install all removed parts.