Removal and Installation

Note: Nissan service manuals for this model do not include a separate service procedure for Cylinder Head Removal/Installation. The service manual does address Cylinder Head Removal/Installation as part of the Timing Chain service procedure. It is this procedure that follows:



CYLINDER HEAD

CAUTION:
- After removing timing chain, do not turn crankshaft and camshaft separately, or valves will strike piston heads.
- When installing camshafts, chain tensioner, oil seals, or other sliding parts, lubricate contacting surfaces with new engine oil.
- Apply new engine oil to bolt threads and seat surfaces when installing cylinder head, camshaft sprocket, crankshaft pulley, and camshaft brackets.





Removal
- Before removing camshaft and idler sprockets, apply paint marks to them for retiming.





1. Drain engine coolant from radiator and cylinder block.

- Be careful not to spill coolant on drive belts.

2. Release fuel pressure.
3. Remove drive belts.
4. Remove power steering pulley and oil pump with bracket.
5. Remove air duct to intake manifold collector.
6. Remove front RH wheel.
7. Remove engine side cover.
8. Remove front under covers.
9. Remove front exhaust tube.





10. Remove cylinder head front mounting bracket.





11. Remove rocker cover.

- Loosen bolts in numerical order.

12. Remove distributor cap.
13. Remove all spark plugs.
14. Remove intake manifold support.

Timing Mark For No.1 Cylinder TDC (Compression Stroke):

15. Set No.1 piston at TDC of compression stroke.





- Make sure No.1 cylinder is at TDC by looking at distributor rotor position.

16. Remove distributor.
17. Remove cylinder head front cover.
18. Remove water pump pulley.





19. Remove thermostat housing.





20. Remove lower chain tensioner.





21. Remove upper chain tensioner and slack side timing chain guide.
22. Loosen idler sprocket bolt.
23. Remove camshaft sprocket bolts.
24. Remove camshaft sprockets.

- For retiming in cylinder head removal, apply paint marks to timing chain matched with mating marks of camshaft sprockets.





25. Remove camshaft brackets and camshafts.

- Mark these parts original positions for reassembly.

26. Remove idler sprocket bolt.





27. Remove cylinder head bolts in numerical order.

- Removing in incorrect order could result in a warped or cracked cylinder head.
- Loosen cylinder head bolts in two or three steps.

28. Remove cylinder head with intake and exhaust manifolds.
29. Remove idler sprocket shaft from rear side.
30. Remove upper timing chain.
31. Remove center member.
32. Remove oil pan.
33. Remove oil strainer.
34. Remove crankshaft pulley.
35. Support engine with a suitable jack.





36. Remove engine front mounting.





37. Remove engine front mounting bracket.





38. Remove front cover bolts and front cover as shown.

CAUTION:
One bolt is located on water pump.
*1: Located on engine front mounting bracket
*2: Located on water pump
*3: Located on power steering oil pump adjusting bar





39. Remove idler sprocket.

- For retiming in cylinder head removal, apply paint marks to timing chain matched with mating mark of idler sprocket.

40. Remove lower timing chain.
41. Remove oil pump drive spacer.
42. Remove chain guides.
43. Remove crankshaft sprocket.





Installation
1. Position crankshaft so that No.1 piston is at TDC and key way is at 12 o'clock.

a. Install crankshaft sprocket.
Make sure mating marks on crankshaft sprocket face front of engine.

b. Install oil pump drive spacer.





2. Install chain guides.
3. Install crankshaft sprocket and lower timing chain.

- Set timing chain by aligning its mating mark with the one on crankshaft sprocket.
- Make sure sprocket's mating mark faces engine front.
- The number of links between the alignment marks are the same for the left and right sides, so either side can be used during alignment with the sprocket.





4. Install front cover.

a. Use a scraper to remove old liquid gasket from mating surface of front cover.
b. Also remove old liquid gasket from mating surface of cylinder block.





c. Apply a continuous bead of liquid gasket to front cover.

- Use Nissan Genuine RTV silicone sealant Part No. 999MP-A7007, Three Bond TB12O7D or equivalent.
- Check alignment of mating marks on chain and crankshaft sprocket.
- Align oil drive spacer with oil pump.
- Put chain to the side of chain guide so that chain does not make contact with water seal area of front cover.





- Make sure two O-rings are present.
- Be careful not to damage oil seal when installing front cover.

5. Install engine front mounting bracket and mounting.
6. Install oil strainer.
7. Install oil pan.
8. Install crankshaft pulley.
9. Install center member.
10. Set idler sprocket by aligning mating mark on larger sprocket with mating mark on lower timing chain.





11. Install upper timing chain and set it by aligning mating mark on the smaller sprocket with mating marks on upper timing chain.

Cylinder Head Washer Orientation:

- Make sure sprocket's mating mark faces engine front

12. Install idler sprocket shaft from the rear side.
13. Install cylinder head with new gasket.

- Be sure to install washers between bolts and cylinder head.
- Do not rotate crankshaft and camshaft separately, or valves will strike piston heads.
- Apply new engine oil to cylinder head bolt threads and seat surfaces.

Cylinder Head Torque Sequence:

Cylinder Head Torque Analysis:

- Tighten bolts (1-10) in numerical order using the following procedure:

a. Tighten bolts to 29.4 Nm (3.00 kg-m, 21.69 ft-lb).
b. Tighten bolts to 58.8 Nm (6.00 kg-m, 43.37 ft-lb).
c. Loosen bolts completely.
d. Tighten bolts to 29.4 Nm (3.00 kg-m, 21.69 ft-lb).
e. Turn bolts 50 to 55 degrees clockwise. If angle wrench is not available, tighten bolts to 53.9 to 63.7 Nm (5.50 to 6.50 kg-m, 39.76 to 46.99 ft-lb).
f. Tighten bolts (11-15) to 6.3 to 8.3 Nm (0.64 to 0.85 kg-m, 55.8 to 73.5 in-lb).

14. Install idler sprocket bolt.

- Apply new engine oil to bolt thread and seat surface.





15. Install camshaft.

- Make sure camshafts are aligned as shown in image.





- Identification marks are present on camshafts.

Camshaft Cap Orientation:

16. Install camshaft brackets and distributor bracket.

- Make sure camshaft brackets are aligned as shown in figure.
- Refer to marks made at disassembly to ensure cam- shaft brackets are installed in their original positions.

Applying Liquid Gasket:

- Apply liquid gasket to distributor bracket as shown in the image.

Camshaft Cap Torque Sequence:

- Apply new engine oil to bolt threads and seat surfaces
- Tighten camshaft bracket bolts using the following procedure:

a. Set camshafts and camshaft brackets.
b. Tighten bolts 11-15 then 1-10.
: 2.0 Nm (0.204 kg-m, 17.7 in-lb)

c. Tighten bolts 1-15
: 5.9 Nm (0.60 kg-m, 52.2 in-lb)

d. Tighten bolts 1-14
: 9.0-11.8 Nm (0.92-1.20 kg-m, 6.7 - 8.7 ft-lb)

e. Tighten bolt 15
: 6.3 - 8.3 Nm (0.64-0.85 kg-m, 55.8 - 73.5 in-lb)

- If any part of valve assembly or camshaft is replaced, check valve clearance according to reference data. After completing assembly, check valve clearance.

Reference data valve clearance (Cold):
Intake
0.25-0.33 mm (0.010 - 0.013 in)
Exhaust
0.32-0.40 mm (0.013 - 0.016 in)





17. Assemble camshaft sprocket with chain.

- Set timing chain by aligning mating marks with those of camshaft sprockets.
- Make sure sprocket's mating marks face engine front.

18. Install camshaft sprocket bolts.

- Apply new engine oil to bolt threads and seat surfaces.





19. Install upper chain tensioner.

- Before installing chain tensioner, insert a suitable pin into pin hole of chain tensioner.
- After installing chain tensioner, remove the pin.





20. Install lower chain tensioner.

CAUTION:
- Check no problems occur when engine is rotated.





- Make sure that No.1 piston is set at TDC on its compression stroke.
- Make sure gasket is facing proper direction before installing lower chain tensioner.





21. Apply liquid gasket to thermostat housing.

- Use Nissan Genuine RTV silicone sealant Part No. 999MP-A7007, Three Bond TB12O7D or equivalent.

22. Install thermostat housing.
23. Install water pump pulley.





24. Install distributor.

- Make sure that position of camshaft is as shown in image.





25. Install cylinder head front cover.

- Apply liquid gasket to cam sprocket cover gusset.
- Use Nissan Genuine RTV silicone sealant Part No. 999MP-A7007, Three Bond TD12O7D or equivalent.





26. Apply liquid gasket to mating surfaces of cylinder head and cylinder head front covers shown in figure.





27. Apply liquid gasket to rocker cover gasket.

- Use Nissan Genuine RTV silicone sealant Part No. 999MP- A7007, Three Bond TD12O7D or equivalent.





28. Install rocker cover and tighten in numerical order as shown.
29. Install the following parts:

- Spark plugs and leads
- Cylinder head front mounting bracket
- Front exhaust tube
- Engine under cover
- Engine side cover and RH wheel
- Power steering oil pump and pulley with bracket
- To check power steering fluid.
- Drive belts
- Checking Drive Belts adjustment.

30. Connect the following:
- Vacuum hoses
- Fuel hoses
- Wire, harnesses and connectors
- Air duct to intake manifold
- Upper radiator hose and refill with coolant.