NISSAN ALMERA N16 2003 Electronic Repair Manual
Manufacturer: NISSAN, Model Year: 2003, Model line: ALMERA N16, Model: NISSAN ALMERA N16 2003Pages: 3189, PDF Size: 54.76 MB
Page 131 of 3189
![NISSAN ALMERA N16 2003 Electronic Repair Manual TIMING CHAIN
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h. Install front cover with mounting bolts temporarily so that front
cover will not move.
i. Press fit dowel pin into cylinder block through NISSAN ALMERA N16 2003 Electronic Repair Manual TIMING CHAIN
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h. Install front cover with mounting bolts temporarily so that front
cover will not move.
i. Press fit dowel pin into cylinder block through](/img/5/57350/w960_57350-130.png)
TIMING CHAIN
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h. Install front cover with mounting bolts temporarily so that front
cover will not move.
i. Press fit dowel pin into cylinder block through front cover.
j. Tighten front cover mounting bolts temporarily.
●A [M6 x 20 mm (0.79 in)], B [M6 x 40 mm (1.57 in)], C [M8 x
70 mm (2.76 in)], D [M6 x 73 mm (2.87 in)]
●Bolt C also secures power steering pump adjusting bar.
●Bolt E [M6 x 12 mm (0.47 in)] is for installing power steering
pump adjusting bar.
k. Tighten cylinder head auxiliary bolts (M6) temporarily.
l. Tighten front cover mounting bolts and cylinder head auxiliary
bolts to specified torque.
4. Install oil pump drive spacer.
●When installing, align with flat of oil pump inner rotor.
●If they are not aligned, rotate inner rotor with a flat-bladed
screwdriver to align them.
CAUTION:
Be careful not to damage oil seal lips.
5. Install water pump pulley and idler pulley bracket assembly.
6. Install crankshaft pulley.
●When installing it, make sure that front oil seal lip is not inverted and garter spring is in position.
●For direction of mounting bolt washer, refer to “Component Parts Location”.
●With same procedure as “removal”, secure crankshaft, and tighten mounting bolts.
7. Install cylinder head front cover.
●Apply liquid gasket to cylinder head front cover.
●Use Genuine Liquid Gasket or equivalent.
8. Install engine front mounting bracket.
9. Install remaining parts in the reverse order of removal.
INSPECTION AFTER INSTALLATION
●In order to allow liquid gasket to be cured, perform inspection at least 30 minutes after the last step in
which parts sealed with liquid gasket are installed.
●With engine warmed up, check each part for engine oil leakage.
PBIC0564E
EMD0850D
PBIC0566E
PBIC0968E
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![NISSAN ALMERA N16 2003 Electronic Repair Manual EM-54
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OIL SEAL
OIL SEAL
PFP:00100
Removal and Installation of Valve Oil SealEBS00LQE
REMOVAL
1. Remove camshaft. Refer to EM-32, "CAMSHAFT" .
2. Remove adjusting shim (if so equipped) and NISSAN ALMERA N16 2003 Electronic Repair Manual EM-54
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OIL SEAL
OIL SEAL
PFP:00100
Removal and Installation of Valve Oil SealEBS00LQE
REMOVAL
1. Remove camshaft. Refer to EM-32, "CAMSHAFT" .
2. Remove adjusting shim (if so equipped) and](/img/5/57350/w960_57350-131.png)
EM-54
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OIL SEAL
OIL SEAL
PFP:00100
Removal and Installation of Valve Oil SealEBS00LQE
REMOVAL
1. Remove camshaft. Refer to EM-32, "CAMSHAFT" .
2. Remove adjusting shim (if so equipped) and valve lifters. Refer
to EM-32, "
CAMSHAFT" .
3. To prevent valve from falling inside cylinder, turn crankshaft until
cylinder with oil seal to be removed is at top dead center.
CAUTION:
When rotating crankshaft, be careful that timing chain is not
caught by front cover.
4. Using valve spring compressor (special service tool), remove valve collet. Then remove valve spring and
valve spring retainer.
5. Remove valve oil seal using valve oil seal puller (special service
tool).
INSTALLATION
1. Apply engine oil on new valve oil seal joint and seal lip.
2. Using valve oil seal drift (special service tool), press fit valve oil
seal to height shown in figure.
3. Perform steps in the reverse order of removal for the following
operations.
SEM914F
SEM909F
SEM910F
Page 133 of 3189
![NISSAN ALMERA N16 2003 Electronic Repair Manual OIL SEAL
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Removal and Installation of Front Oil SealEBS00LQF
REMOVAL
1. Remove the following parts:
●Undercover (with splash cover)
●Drive belt; Refer to EM-11, NISSAN ALMERA N16 2003 Electronic Repair Manual OIL SEAL
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Removal and Installation of Front Oil SealEBS00LQF
REMOVAL
1. Remove the following parts:
●Undercover (with splash cover)
●Drive belt; Refer to EM-11,](/img/5/57350/w960_57350-132.png)
OIL SEAL
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Removal and Installation of Front Oil SealEBS00LQF
REMOVAL
1. Remove the following parts:
●Undercover (with splash cover)
●Drive belt; Refer to EM-11, "DRIVE BELTS" .
●Crankshaft pulley; Refer to EM-47, "TIMING CHAIN" .
2. Using flat-head screwdriver, remove front oil seal.
CAUTION:
Be careful not to damage front timing chain cover and crankshaft.
INSTALLATION
1. Apply engine oil on new front oil seal.
2. Using a suitable drift, press fit until the height of front oil seal is
level with the mounting surface.
●Suitable drift : outer diameter 50 mm (1.97 in), inner diameter
44 mm (1.73 in).
CAUTION:
●Be careful not to damage front cover and crankshaft.
●Press oil seal straight so that it is not curling up or
inclined.
3. Perform steps in the reverse order of removal for the following
operations.
Removal and Installation of Rear Oil SealEBS00LQG
REMOVAL
1. Remove transaxle assembly. Refer to MT-23, "Removal" (RS5F30A), MT-23, "Removal" (RS5F70A) and
AT-411, "Removal" (AUTOMATIC TRANSAXLE).
2. Remove drive plate. Refer to EM-70, "
CYLINDER BLOCK" .
3. Using flat-head screwdriver, remove front oil seal.
CAUTION:
Be careful not to damage mounting surface.
INSTALLATION
1. Using a suitable drift, press rear oil seal to rear oil seal retainer.
●Suitable drift : outer diameter 102 mm (4.02 in), inner diame-
ter 90 mm (3.54 in).
CAUTION:
●Do not touch grease applied on oil seal lip
●Be careful not to damage rear oil seal retainer and crank-
shaft.
●Press in straight to avoid causing any burrs or tilting of
oil seal.
SEM912F
SEM715A
SEM097F
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![NISSAN ALMERA N16 2003 Electronic Repair Manual EM-56
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OIL SEAL
●Press rear oil seal into rear oil seal retainer so that is
does not project from the end.
2. Perform steps in the reverse order of removal for the following operation NISSAN ALMERA N16 2003 Electronic Repair Manual EM-56
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OIL SEAL
●Press rear oil seal into rear oil seal retainer so that is
does not project from the end.
2. Perform steps in the reverse order of removal for the following operation](/img/5/57350/w960_57350-133.png)
EM-56
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OIL SEAL
●Press rear oil seal into rear oil seal retainer so that is
does not project from the end.
2. Perform steps in the reverse order of removal for the following operations.
KBIA1401E
Page 135 of 3189
![NISSAN ALMERA N16 2003 Electronic Repair Manual CYLINDER HEAD
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CYLINDER HEADPFP:11041
On-Vehicle ServiceEBS00LQH
CHECKING COMPRESSION PRESSURE
1. Warm up engine thoroughly. Then, stop it.
2. Release fuel pressu NISSAN ALMERA N16 2003 Electronic Repair Manual CYLINDER HEAD
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CYLINDER HEADPFP:11041
On-Vehicle ServiceEBS00LQH
CHECKING COMPRESSION PRESSURE
1. Warm up engine thoroughly. Then, stop it.
2. Release fuel pressu](/img/5/57350/w960_57350-134.png)
CYLINDER HEAD
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CYLINDER HEADPFP:11041
On-Vehicle ServiceEBS00LQH
CHECKING COMPRESSION PRESSURE
1. Warm up engine thoroughly. Then, stop it.
2. Release fuel pressure. Refer to EC-34, "
FUEL PRESSURE RELEASE" (WITH EURO-OBD), EC-427,
"FUEL PRESSURE RELEASE" (WITHOUT EURO-OBD).
3. Remove ignition coil and spark plug from each cylinder.
Refer to IGNITION COIL EM-24, "
Removal and Installation" and SPARK PLUG EM-25, "Removal and
Installation" .
4. Connect engine tachometer (not required in use of CONSULT-II).
5. Disconnect fuel injector harness connector so that no fuel is injected.
6. Install compression tester with adapter onto spark plug hole.
●Use compression gauge whose picking up end inserted to spark
plug hole is smaller than 20 mm (0.79 in) in diameter. Otherwise,
it may be caught by cylinder head during removal.
7. With accelerator pedal fully depressed, turn ignition switch to
“START” for cranking. When the gauge pointer stabilizes, read
the compression pressure and engine rpm. Perform these steps
to check each cylinder.
Compression pressure
[kPa (bar, kg/cm2 , psi)/rpm]
CAUTION:
Always use a fully changed battery to obtain specified engine speed.
●If the engine speed is out of specified range, check battery liquid for proper gravity. Check engine speed
again with normal battery gravity.
●If compression pressure is below minimum value, check valve clearances and parts associated with com-
bustion chamber (Valve, valve seat, piston, piston ring, cylinder bore, cylinder head, cylinder head gas-
ket). After the checking, measure compression pressure again.
●If some cylinders have low compression pressure, pour small amount of engine oil into the spark plug hole
of the cylinder to re-check it for compression.
–If the added engine oil improves the compression, the piston rings may be worn out or damaged. Check
the piston rings and replace if necessary.
–If the compression pressure remains at low level despite the addition of engine oil, the valves may be mal-
functioning. Check the valves for damage. Replace the valve or valve seat accordingly.
●If two adjacent cylinders have respectively low compression pressure and their compression remains low
even after the addition of engine oil, the gaskets are leaking. In such a case, replace the cylinder head
gaskets.
KBIA1402E
Engine type QG15DE QG18DE
Standard1,372 (13.72, 13.99,
198.9)1,324 (13.24, 13.5, 192)
Limit 1,176 (11.76, 12.0, 170.5) 1,128 (11.28, 11.5, 164)
Difference limit among
cylinders98 (0.98, 1.0, 14) 98 (0.98, 1.0, 14)SEM387C
Page 136 of 3189
![NISSAN ALMERA N16 2003 Electronic Repair Manual EM-58
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CYLINDER HEAD
8. Install spark plug, ignition coil and harness connectors.
Removal and InstallationEBS00LQI
REMOVAL
1. Release fuel pressure. Refer to EC-34, "FUEL PRESSURE RELEA NISSAN ALMERA N16 2003 Electronic Repair Manual EM-58
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CYLINDER HEAD
8. Install spark plug, ignition coil and harness connectors.
Removal and InstallationEBS00LQI
REMOVAL
1. Release fuel pressure. Refer to EC-34, "FUEL PRESSURE RELEA](/img/5/57350/w960_57350-135.png)
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CYLINDER HEAD
8. Install spark plug, ignition coil and harness connectors.
Removal and InstallationEBS00LQI
REMOVAL
1. Release fuel pressure. Refer to EC-34, "FUEL PRESSURE RELEASE" (WITH EURO-OBD), EC-427,
"FUEL PRESSURE RELEASE" (WITHOUT EURO-OBD).
2. Remove undercover.
3. Drain engine coolant. Refer to LC-17, "Changing Engine Coolant".
4. Remove the following components and related parts:
●Intake manifold and intake manifold collector. Refer to EM-16, "INTAKE MANIFOLD" .
●Exhaust manifold and catalytic converter. Refer to EM-19, "EXHAUST MANIFOLD AND CATALYTIC
CONVERTER" .
●Ignition coil. Refer to EM-24, "IGNITION COIL" .
●Rocker cover. Refer to EM-29, "ROCKER COVER" .
●Camshaft. Refer to EM-32, "CAMSHAFT" .
●Alternator bracket. Refer to SC-33, "Removal and Installation".
PBIC0972E
1. Rear engine slinger 2. Cylinder head bolt 3. Washer
4. Auxiliary bolt of cylinder head 5. Cylinder head gasket 6. Cylinder head assembly
Page 137 of 3189
![NISSAN ALMERA N16 2003 Electronic Repair Manual CYLINDER HEAD
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5. Remove cylinder head loosening bolts in reverse order shown in
the figure.
6. Remove cylinder head gasket.
INSTALLATION
1. Apply liquid gasket to NISSAN ALMERA N16 2003 Electronic Repair Manual CYLINDER HEAD
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5. Remove cylinder head loosening bolts in reverse order shown in
the figure.
6. Remove cylinder head gasket.
INSTALLATION
1. Apply liquid gasket to](/img/5/57350/w960_57350-136.png)
CYLINDER HEAD
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5. Remove cylinder head loosening bolts in reverse order shown in
the figure.
6. Remove cylinder head gasket.
INSTALLATION
1. Apply liquid gasket to positions shown in figure, then install cyl-
inder head gasket.
●Use Genuine Liquid Gasket or equivalent.
2. Install cylinder head assembly, tighten bolts (1) to (10) in numer-
ical order shown in figure with the following procedure:
CAUTION:
In step “d”, loosen bolts in the reverse order of that indi-
cated in figure.
a. Apply new engine oil to threads and seating surface of mounting
bolts.
b. Tighten all bolts to 29.4 N·m (3.0 kg-m, 22 ft-lb).
c. Tighten all bolts to 58.8 N·m (6.0 kg-m, 43 ft-lb).
d. Completely loosen to 0 N·m (0 kg-m, 0 ft-lb).
e. Tighten all bolts to 27.4 - 31.4 N·m (2.8 to 3.2 kg-m, 21 to 23 ft-
lb).
f. Turn all bolts 50 to 55 degrees (target: 50 degrees) clockwise.
CAUTION:
Check and confirm the tightening angle by using angle
wrench (special service tool). Avoid judgment by visual
inspection without the tool.
SEM900F
PBIC0573E
SEM900F
PBIC0574E
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![NISSAN ALMERA N16 2003 Electronic Repair Manual EM-60
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CYLINDER HEAD
3. Tighten cylinder auxiliary bolts (11) to (14) in numerical order
shown in figure.
●Pay attention to shank length under bolt head. [11: 20 mm
(0.79 in), 12 - 14: NISSAN ALMERA N16 2003 Electronic Repair Manual EM-60
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CYLINDER HEAD
3. Tighten cylinder auxiliary bolts (11) to (14) in numerical order
shown in figure.
●Pay attention to shank length under bolt head. [11: 20 mm
(0.79 in), 12 - 14:](/img/5/57350/w960_57350-137.png)
EM-60
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CYLINDER HEAD
3. Tighten cylinder auxiliary bolts (11) to (14) in numerical order
shown in figure.
●Pay attention to shank length under bolt head. [11: 20 mm
(0.79 in), 12 - 14: 25 mm (0.98 in)]
Disassembly and AssemblyEBS00LQJ
CAUTION:
●When installing camshafts, chain tensioners, oil seals or other sliding parts, lubricate contacting
surface with new engine oil.
●Apply new engine oil to threads and seat surface when installing cylinder head, camshaft
sprocket, crankshaft pulley and camshaft bracket.
●Attach tags to valve lifters so as not to mix them up.
DISASSEMBLY
1. Remove adjusting shim (if so equipped) and valve lifter.
●Confirm installation point.
SEM900F
PBIC0973E
1. Cylinder head 2. Valve (INT) 3. Valve (EXH)
4. Valve seat 5. Engine coolant temperature sensor 6. Copper washer
7. Spark plug tube 8. Spark plug
Page 139 of 3189
![NISSAN ALMERA N16 2003 Electronic Repair Manual CYLINDER HEAD
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2. Remove valve collet.
●Compress valve spring with valve spring compressor (special
service tool). Remove valve collet with magnet driver.
3. Remo NISSAN ALMERA N16 2003 Electronic Repair Manual CYLINDER HEAD
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2. Remove valve collet.
●Compress valve spring with valve spring compressor (special
service tool). Remove valve collet with magnet driver.
3. Remo](/img/5/57350/w960_57350-138.png)
CYLINDER HEAD
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2. Remove valve collet.
●Compress valve spring with valve spring compressor (special
service tool). Remove valve collet with magnet driver.
3. Remove valve spring retainer and valve spring.
4. Push valve stem to combustion chamber side, and remove
valve.
●Inspect valve guide clearance before removal. Refer to EM-
63, "VALVE GUIDE CLEARANCE" .
●Confirm installation point.
5. Remove valve oil seal with valve oil seal puller (special service
tool).
6. Remove valve spring seat.
7. When valve seat must be replaced, refer to EM-64, "
VA LV E
SEAT REPLACEMENT" .
8. When valve guide must be replaced, refer to EM-63, "
VA LV E
GUIDE REPLACEMENT" .
9. Remove spark plug with spark plug wrench (commercial service
tool).
10. Remove engine coolant temperature sensor.
CAUTION:
Do not shock it.
11. Remove spark plug tube, as necessary.
●Using a pair of pliers, pull spark plug tube out of cylinder head.
CAUTION:
●Take care not to damage cylinder head.
●Once removed, a spark plug tube will be deformed and cannot be reused. Do not remove it
unless absolutely necessary.
ASSEMBLY
1. Install valve guide. Refer to EM-63, "VALVE GUIDE REPLACEMENT" .
2. Install valve seat. Refer to EM-64, "
VALVE SEAT REPLACEMENT" .
3. Install valve oil seal.
●Install with valve oil seal drift (special service tool) to match
dimension in illustration.
4. Install valve spring seat.
5. Install valve.
●Install larger diameter to intake side.
6. Install valve spring.
7. Install valve spring retainer.
PBIC1015E
SEM909F
PBIC0576E
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![NISSAN ALMERA N16 2003 Electronic Repair Manual EM-62
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CYLINDER HEAD
8. Install valve collet.
●Compress valve spring with valve spring compressor (special
service tool). Install valve collet with magnet hand.
●Tap stem edge lightly with pla NISSAN ALMERA N16 2003 Electronic Repair Manual EM-62
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CYLINDER HEAD
8. Install valve collet.
●Compress valve spring with valve spring compressor (special
service tool). Install valve collet with magnet hand.
●Tap stem edge lightly with pla](/img/5/57350/w960_57350-139.png)
EM-62
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CYLINDER HEAD
8. Install valve collet.
●Compress valve spring with valve spring compressor (special
service tool). Install valve collet with magnet hand.
●Tap stem edge lightly with plastic hammer after installation to
check its installed condition.
9. Install adjusting shim (if so equipped) and valve lifter.
10. Install engine coolant temperature sensor.
●Apply Genuine Liquid Gasket or equivalent to the thread.
11. Install spark plug tube.
●Press-fit spark plug tube following procedure below.
a. Remove old liquid gasket adhering to cylinder-head mounting
hole.
b. Apply liquid gasket to area within approximately 15 mm (0.59 in)
from edge of spark plug tube press-fit side.
●Use Genuine Liquid Gasket or equivalent.
c. Using a drift, press-fit spark plug tube so that its height “H” is as
specified in the figure.
CAUTION:
●When press-fitting, take care not to deform spark plug tube.
●After press-fitting, wipe off liquid gasket protruding onto cylinder-head upper face.
12. Install spark plug with spark plug wrench (commercial service tool).
Inspection After DisassemblyEBS00LQK
CYLINDER HEAD DISTORTION
1. Wipe off oil and remove water scale (like deposit), gasket,
sealer, carbon, etc with scraper.
CAUTION:
Use utmost care not to allow gasket debris to enter pas-
sages for oil or water.
2. At each of several locations on bottom surface of cylinder head,
measure distortion in six directions.
VALVE DIMENSIONS
Check dimensions of each valve. For dimensions, refer to EM-94,
"VA LV E" .
PBIC1016E
Standard press-fit height “H” :
: 41.0 - 42.0 mm (1.61 - 1.65 in)KBIA1248E
Limit : 0.1 mm (0.004 in)
PBIC0075E
SEM188A