2001 NISSAN ALMERA engine

SEM104G
27. Remove RH engine mounting bracket.
28. Remove idler pulley and bracket.
SEM883F
29. Remove water pump pulley and water pump.
30. Remove front cover bolts and front cover as shown.
H1: Located on water pump
H2: Located on power steering pump adjusting bar
+Inspect for oil leakage at front oil seal. Replace seal if oil leak
is present.
SEM884F
SEM897F
31. Remove timing chain.
32. Remove oil pump drive spacer.
33. Remove chain guides.
34. Remove crankshaft sprocket.
35. Remove O-rings from cylinder block and front cover.
SEM885F
InspectionNJEM0106Check for cracks and excessive wear at roller links. Replace
if necessary.
TIMING CHAINQG
Removal (Cont'd)
EM-27

SEM886F
InstallationNJEM01071. Install crankshaft sprocket on crankshaft.
+Make sure mating marks on crankshaft sprocket face front
of engine.
SEM890F
2. Position crankshaft so that No. 1 piston is at TDC and key way
is at 12 o'clock.
SEM891F
3. Install slack side timing chain guide and timing chain tension
guide.
SEM892F
4. Install timing chain on crankshaft sprocket.
+Support chain with a suitable tool to keep the mating mark
aligned.
+Set timing chain by aligning its mating mark with that on
the crankshaft sprocket.
+Make sure sprocket's mating mark faces engine front.
SEM905F
5. Install camshaft sprocket.
+Set timing chain by aligning mating marks with those of
camshaft sprockets.
TIMING CHAINQG
Installation
EM-28

SEM519G
6. Install camshaft sprocket bolts and tighten them to correct
torque.
+Apply new engine oil to bolt threads and seat surface.
SEM520G
7. Install chain tensioner.
+Before installing chain tensioner, insert a suitable pin into
pin hole of chain tensioner.
+After installing chain tensioner, remove the pin.
8. Install timing chain guide.
SEM893F
9. Install O-rings to cylinder block.
SEM894F
10. Before installing front cover, remove all traces of liquid gasket
from mating surface using a scraper.
+Also remove traces of liquid gasket from mating surface of
cylinder block.
SEM677G
11. Apply a continuous bead of liquid gasket to mating surface of
front cover.
+Check alignment of mating marks on chain and crankshaft
sprocket.
+Align oil drive spacer with oil pump.
+Place timing chain to the side of chain guide. This pre-
vents the chain from making contact with water seal area
of front cover.
TIMING CHAINQG
Installation (Cont'd)
EM-29

SEM896F
12. Install front cover.
Bolt No. Tightening torque N´m (kg-m, in-lb) ª!º mm (in)
a. 6.9 - 9.5 (0.70 - 0.97, 61 - 84) 20 (0.79)
b. 6.9 - 9.5 (0.70 - 0.97, 61 - 84) 40 (1.57)
c. 17 - 24 (1.7 - 2.4, 148 - 208*) 70 (2.76)
d. 6.9 - 9.5 (0.70 - 0.97, 61 - 84) 72.8 (2.866)
e. 6.9 - 9.5 (0.70 - 0.97, 61 - 84) 12 (0.47)
*: 12 - 17 ft-lb
SEM897F
+Make sure two O-rings are present.
+Be careful not to damage oil seal when installing front
cover.
SEM009G
13. Install cylinder head bolts at engine front side.
+Tightening procedure
Tightening bolts (1 - 4) to 6.3 to 8.3 N´m (0.64 to 0.85 kg-m,
55.8 to 73.5 in-lb).
SEM945F
14. Install oil pump drive spacer.
SEM104G
15. Install water pump and water pump pulley.
Refer to LC-14, ªWater Pumpº.
16. Install idler pulley and bracket.
17. Install RH engine mounting bracket.
18. Install RH engine mounting.
19. Install oil strainer.
20. Install oil pan. Refer to EM-21, ªInstallationº.
21. Install crankshaft pulley.
22. Remove ring gear stopper.
23. Install starter motor.
TIMING CHAINQG
Installation (Cont'd)
EM-30

SEM909F
ReplacementNJEM0015VALVE OIL SEALNJEM0015S011. Remove rocker cover.
2. Remove camshaft.
3. Remove valve spring. Refer to EM-37.
4. Remove valve oil seal with Tool.
Piston concerned should be set at TDC to prevent valve from
falling.
SEM910F
5. Apply new engine oil to new valve oil seal and install it with
Tool.
SEM911F
FRONT OIL SEALNJEM0015S021. Remove the following parts:
+Engine under cover
+RH engine side cover
+Alternator and power steering drive belts
+Crankshaft pulley
2. Remove front oil seal from front cover.
+Be careful not to scratch front cover.
SEM715A
SEM912F
3. Apply new engine oil to new oil seal and install it using a suit-
able tool.
+Install new oil seal in the direction shown.
OIL SEALQG
Replacement
EM-32

SEM096F
REAR OIL SEAL=NJEM0015S031. Remove transaxle. Refer to MT-23 or AT-354, ªREMOVAL AND
INSTALLATIONº.
2. Remove flywheel or drive plate.
3. Remove rear oil seal.
+Be careful not to scratch rear oil seal retainer.
SEM715A
4. Apply new engine oil to new oil seal and install it using a suit-
able tool.
+Install new oil seal in the direction shown.
SEM097F
OIL SEALQG
Replacement (Cont'd)
EM-33

CAUTION:
+When installing camshaft and oil seal, lubricate contacting
surfaces with new engine oil.
+When tightening cylinder head bolts, camshaft sprocket
bolts and camshaft bracket bolts, lubricate bolt threads
and seat surfaces with new engine oil.
+Attach tags to valve lifters so as not to mix them up.
SEM869F
RemovalNJEM00171. Drain engine coolant from radiator and cylinder block.
Be careful not to spill coolant on drive belts.
2. Release fuel pressure.
Refer to EC-40, ªFuel Pressure Releaseº.
3. Remove drive belts.
4. Remove air duct to intake manifold collector.
5. Remove front undercovers.
6. Remove front exhaust tube.
SEM870F
7. Disconnect vacuum hoses, fuel hoses, water hoses, wires,
harness, connectors and so on.
8. Remove intake manifold rear supports.
9. Remove exhaust manifold.
10. Remove ignition coils.
11. Remove spark plugs.
SEM102G
12. Remove rocker cover bolts in numerical order as shown in the
figure.
SEM872F
13. Set No. 1 piston at TDC on its compression stroke.
CYLINDER HEADQG
Components (Cont'd)
EM-35

SEM921F
Valve ClearanceNJEM0041CHECKINGNJEM0041S01Check valve clearance while engine is warm and not running.
1. Remove rocker cover.
2. Remove all spark plugs.
3. Set No. 1 cylinder at TDC on its compression stroke.
+Align pointer with TDC mark on crankshaft pulley.
+Check that valve lifters on No. 1 cylinder are loose and valve
lifters on No. 4 are tight.
+If not, turn crankshaft one revolution (360É) and align as
described above.
SEM922F
4. Check only those valves shown in the figure.
SEM139D
+Using a feeler gauge, measure clearance between valve lifter
and camshaft.
+Record any valve clearance measurements which are out of
specification. They will be used later to determine the required
replacement adjusting shim.
Valve clearance for checking (Hot):
Intake
0.21 - 0.49 mm (0.008 - 0.019 in)
Exhaust
0.30 - 0.58 mm (0.012 - 0.023 in)
SEM923F
5. Turn crankshaft one revolution (360É) and align mark on crank-
shaft pulley with pointer.
6. Check only those valves shown in the figure.
+Use the same procedure as mentioned in step 4.
7. If all valve clearances are within specification, install the fol-
lowing parts:
+Rocker cover
+All spark plugs
CYLINDER HEADQG
Valve Clearance
EM-44