Table of contents: Removal ↓ Installation ↓
Camshaft Drive Parts
1. Upper chain guide bolt; 2. Upper guide; 3. Upper chain; 4. Exhaust camshaft sprocket; 5. Intake camshaft sprocket; 6. Upper chain tensioner; 7–9. Bolt; 10. Lower chain tensioner; 11. Gasket; 12. Shoe; 13. Shoe axle bolt; 14. Guide pin and gasket; 15. Upper chain tensioner; 16. Bolt; 17. Intermediate sprocket shaft; 18. Intermediate sprocket; 19. Lower chain tensioner; 20. Bolt; 21. Lower chain; 22. Leading sprocket; 23. Oil pump shaped bushing; 24. Chain cover; 25. Pulley; 26. Pulley bolt; 27. Bolt
Attention! If the cover is removed without damaging the fastening and integrity of the cylinder head seal, then after assembly a slight oil leak is possible from under the gasket installed between the cover and the cylinder head. Therefore, it is advisable to combine the removal of the cover with the removal of the cylinder head and replacement of the gasket.
Removal
1. Remove the coolant pump (see subsection 4.7).
2. Remove the crankshaft pulley (see subsection 3.1.1.5).
3. Remove the oil pan and oil receiver with coarse filter (see subsection 3.1.1.12).
4. Remove the two bolts securing the power steering pump bracket to the chain drive cover, the nuts and bolts securing the bracket to the pump and remove the bracket.
5. Remove the bracket from the powertrain support by unscrewing the three bolts and releasing the wiring from the clamps on the bracket.
6. Loosen the bolts and nuts (indicated by arrows) and remove the timing gear inspection cover from the right side of the cylinder head. Remove the gasket.
7. Remove the two bolts and take out the lower chain tensioner. Remove the tensioner gasket, paying attention to its orientation.
Caution! When removing the chain tensioner, do not allow the crankshaft to rotate.
8. Remove the four bolts securing the cylinder head to the top of the chain cover. On early production vehicles, you will need to remove the upper chain guide to access one of the bolts.
9. Raise the engine with a jack or hang it on a hoist, hooking the hoists onto the special eyes on the engine.
10. Unscrew the tension bolt of the right support of the power unit, then unscrew the three bolts and remove the support. If the rubber cushions of the supports have come loose from the body bracket, then remove the cushions as well.
11. Loosen the bracket mounting bolts and the generator adjusting bracket mounting bolt to the bracket. Remove the right support bracket.
12. Remove the chain cover bolts. The bolts are different lengths, so you should mark their original position.
13. Remove the cover from the crankshaft nose, then manipulate the cover out of the engine compartment. Remove the oil channel seals, they must be replaced. If the cover guide pins are loose, remove them and store them with the cover.
14. Remove the shaped bushing of the oil pump drive gear from the crankshaft nose.
Installation
1. It is recommended to replace the crankshaft oil seal before installation.
2. Press the new seal until it stops against the flange. Press it in using a mandrel that rests only on the outer edge of the seal.
3. Make sure the sealing surfaces of the cover and cylinder block are clean and dry.
4. Insert new sealing bushings into the oil passages of the cylinder block.
The original is available on the web page (nissanbook.ru)
5. Apply a thin layer of sealant to the detachable surface (arrow) of the cover with the cylinder block, apply sealant to the area around the coolant pump channel in the central part of the cover. If the cylinder head has not been removed, also apply sealant to the upper surface of the cover.
6. Insert the guide pins into the cylinder block.
7. Align the keyway in the oil pump bushing with the key, then slide the bushing onto the crankshaft nose (the arrows indicate the guide pins).
8. Bring the cover up and position the oil pump drive gear so that the gear engages the shaped bushing when installing the cover in place. Place the cover on the crankshaft, being careful not to damage the working edges of the oil seal, and install the cover on the guide pins.
9. Screw the cover mounting bolts back into the old holes, tighten the bolts in several stages, gradually increasing the tightening torque.
10. Install four M6 bolts securing the cylinder head to the cover, tighten the bolts to the specified torque. On early engines, install the upper guide.
11. Install a new gasket onto the lower chain tensioner, orienting it so that the notch in the gasket aligns with the tensioner's oil hole (indicated by the arrow). Install the tensioner with the gasket and tighten the bolts to the specified torque.
12. Install the right powertrain suspension bracket, tighten the bolts to the specified torque. Place the rubber pads in the suspension bracket from the body side (if you got it), making sure that the pins of the cushions enter the holes in the bracket. Install the support and tighten the bolts to the specified torque.
13. Align the right powertrain support with the body bracket, insert the tie bolt and tighten the nut to the specified torque. Remove the hoists from the engine (or remove the jack).
14. Make sure that the sealing surfaces of the camshaft driven sprocket inspection cover and the cylinder head are clean and free of moisture and oil. If a gasket was installed on the cover, replace the gasket by installing it on the cylinder head. If the seal was provided by a sealant, apply sealant around the entire perimeter of the cover. Install the cover and tighten the bolts and nuts to the specified torque.
15. Install the bracket on the right support of the power unit and tighten the bracket bolts to the specified torque.
16. Install the power steering pump onto the engine and tighten the pump bracket bolts.
17. Install the oil receiver with coarse filter and oil pan (see subsection 3.1.1.12).
18. Install the crankshaft pulley (see subsection 3.1.1.5).
19. Install the coolant pump (see subsection 4.7).
20. Fill the engine with oil and coolant.