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OIL SEAL
OIL SEAL
Removal and Installation of Valve Oil Seal INFOID:0000000004307147
REMOVAL
1. Remove camshafts. Refer to EM-170, " Component " .
2. Remove va NISSAN LATIO 2009 Service Repair Manual EM-182< SERVICE INFORMATION >
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OIL SEAL
OIL SEAL
Removal and Installation of Valve Oil Seal INFOID:0000000004307147
REMOVAL
1. Remove camshafts. Refer to EM-170, " Component " .
2. Remove va](/manual-img/5/57359/w960_57359-3128.png)
EM-182< SERVICE INFORMATION >
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OIL SEAL
OIL SEAL
Removal and Installation of Valve Oil Seal INFOID:0000000004307147
REMOVAL
1. Remove camshafts. Refer to EM-170, " Component " .
2. Remove valve lifters. Refer to EM-170 .
3. Rotate crankshaft, and set piston whose valve oil seal is to be removed to TDC. This will prevent valve from dropping into cylinder.
CAUTION:
When rotating crankshaft, be careful to avo id scarring front cover with timing chain.
4. Remove valve collet. • Compress valve spring using Tool (A). Remove valve collet
with a suitable magnet hand (B).
CAUTION:
When working, be careful not to damage valve lifter holes.
5. Remove valve spring retainer, valve spring and valve spring seat.
6. Remove valve oil seal using Tool (A).
INSTALLATION
1. Apply new engine oil to valve oil seal joint surface and seal lip.
2. Press in valve oil seal to the height (H) shown using Tool (A).
3. Installation of the remaining components is in the reverse order of removal.
Removal and Installation of Front Oil Seal INFOID:0000000004307148
REMOVAL
1. Remove the following parts. • Front fender protector (RH); Refer to EI-24 .
Tool number : KV101092S0 (J-26336-B)
PBIC3727E
Tool number :KV10107902 (J-38959)
PBIC3728E
Height (H) : 15.1 - 15.7 mm (0.594 - 0.618 in)
Tool number : KV10115600 (J-38958) PBIC3211J
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• Drive belt; Refer to
EM-136, " Component " .
• Crankshaft pulley; Refer to EM-160, " Component " .
2. Remove fr NISSAN LATIO 2009 Service Repair Manual OIL SEAL
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• Drive belt; Refer to
EM-136, " Component " .
• Crankshaft pulley; Refer to EM-160, " Component " .
2. Remove fr](/manual-img/5/57359/w960_57359-3129.png)
OIL SEAL
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• Drive belt; Refer to
EM-136, " Component " .
• Crankshaft pulley; Refer to EM-160, " Component " .
2. Remove front oil seal using a suitable tool. CAUTION:
Be careful not to damage front cover and crankshaft.
INSTALLATION 1. Apply new engine oil to new front oil seal joint surface and seal lip.
2. Install front oil seal so that each seal lip is oriented as shown.
• Install front oil seal (2) using a suitable tool with outer diameter57 mm (2.24 in) and inner diameter 45 mm (1.77 in) (A) to the
dimension as shown.
CAUTION:
• Be careful not to damage front cover and crankshaft.
• Press-fit oil seal straight to avoid causing burrs or tilting.
• Do not touch grease applied on oil seal lip.
3. Installation of the remaining components is in the reverse order of removal.
Removal and Installation of Rear Oil Seal INFOID:0000000004307149
REMOVAL 1. Remove transaxle assembly. Refer to MT-58 (M/T models),
AT-232 (A/T models),
CVT-182 or
CVT-354 (CVT models).
2. Remove clutch cover and clutch disk (M/T models). Refer to CL-15 .
3. Remove drive plate (A/T or CVT models) or flywheel (M/T models). Refer to EM-199, " Component " .
4. Remove rear oil seal with a suitable tool. CAUTION:
Be careful not to damage crankshaft and cylinder block.
INSTALLATION 1. Apply the liquid gasket lightly to entire outside area of new rear oil seal. Use Genuine Silicone RTV Seal ant or equivalent. Refer to GI-42, " Recommended Chemical Prod-
uct and Sealant " .
A : Dust seal lip
B : Oil seal lip
: Engine front
: Engine rear PBIC3485J
1 : Front cover
: Engine front
Within 0.3 mm (0.012 in) toward engine front
Within 0.5 mm (0.020 in) toward engine rear PBIC3729E
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EM-184< SERVICE INFORMATION >
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OIL SEAL
2. Install rear oil seal so that each seal lip is oriented as shown.
• Install rear oil seal with a suitable tool with an outer diameter115 mm (4.53 in) and inner diameter 90 mm (3.54 in) (A).
CAUTION:
• Be careful not to damage crankshaft and cylinder block.
• Press-fit oil seal straight to avoid causing burrs or tilt-
ing.
• Do not touch grease applied onto oil seal lip.
• Install rear oil seal (1) to the position as shown.
NOTE:
The standard surface of the dimension is the rear end surface of
cylinder block.
3. Installation of the remaining components is in the reverse order of removal. A : Dust seal lip
B : Oil seal lip
: Engine outside
: Engine inside PBIC3485J
PBIC3951E
A : Rear end surface of cylinder block
PBIC3761E
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CYLINDER HEAD
On-Vehicle Service INFOID:0000000004307150
CHECKING COMPRESSION PRESSURE 1. Warm up engine thoroughly. Then, stop it.
2. Release fuel pressure. Refer to EC-574, " Fuel Pressure Check " (Type 1) or
EC-1086, " Fuel Pressure
Check " (Type 2).
3. Disconnect fuel pump fuse (1) to avoid fuel injection during mea- surement.
4. Remove engine cover. Refer to EM-141, " Component " .
5. Remove ignition coil and spark plug from each cylinder. Refer to EM-153 .
6. Connect an engine tachometer (not required in use of CONSULT-III).
7. Install a suitable compression tester (B) with an adapter (A) onto spark plug hole.
• Use the adapter 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.
8. With accelerator pedal fully depressed, turn ignition switch to “START” for cranking. When the gauge pointer stabilizes, read the compression pressure and the engine rpm. Perform these steps to check each
cylinder.
Compression pressure: Unit: kPa (bar, kg/cm2
psi) /rpm
CAUTION: : Vehicle front
LBIA0459E
SBIA0533E
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Trouble Diagnosis Introduction "
(Type 1) or
EC-1089, " Trouble Diagnosis Introduction " (Type 2).
Component INFOID:0000000004307151
Removal and Installation INFOID:0000000004307152
REMOVAL
WARNING:
• Put a “CAUTION: FLAMMABLE” sign in the workshop.
• Be sure to work in a well ventilate d area and furnish workshop with a CO
2 fire extinguisher.
• Do not smoke while servicing fuel system. Keep open flames and sparks away from the work area.
1. Release the fuel pressure. Refer to EC-574, " Fuel Pressure Check " (Type 1) or
EC-1086, " Fuel Pressure
Check " (Type 2).
2. Drain engine coolant and engine oil. Refer to CO-35 and
LU-16 .
CAUTION:
• Perform this step when the engine is cold.
• Never spill engine coolant an d engine oil on drive belt.
3. Remove front fender protector (RH). Refer to EI-24 .
1. Cylinder head assembly 2. Cylinder head bolt 3. Cylinder head gasket
A. Refer to EM-186
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4. Remove drive belt. Refer to
EM-136, " Removal and Installation " .
5. Remove the following components and rela NISSAN LATIO 2009 Service Repair Manual CYLINDER HEAD
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4. Remove drive belt. Refer to
EM-136, " Removal and Installation " .
5. Remove the following components and rela](/manual-img/5/57359/w960_57359-3133.png)
CYLINDER HEAD
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4. Remove drive belt. Refer to
EM-136, " Removal and Installation " .
5. Remove the following components and related parts. • Exhaust manifold; Refer to EM-144 .
• Intake manifold; Refer to EM-141 .
• Fuel tube and fuel injector assembly; Refer to EM-156 .
• Water outlet; Refer to CO-47 .
• Rocker cover; Refer to EM-153 .
• Front cover, timing chain; Refer to EM-160 .
• Camshaft; Refer to EM-170 .
6. Remove cylinder head. • Loosen bolts in reverse order as shown.
• Using TORX socket (size E18), loosen cylinder head bolts.
7. Remove cylinder head gasket.
INSPECTION AFTER REMOVAL
Cylinder Head Bolts Outer Diameter • Cylinder head bolts are tightened by plastic zone tightening method. Whenever the size difference between (d1) and (d2)
exceeds the limit, replac e them with a new one.
• If reduction of outer diameter appear s in a position other than (d2),
use it as (d2) point.
Cylinder Head Distortion NOTE:
When performing this inspection, cylinder block distortion should be also checked. Refer to EM-216, " Inspec-
tion After Disassembly " .
1. Wipe off engine oil and remove water scale (like deposit ), gasket, sealant, carbon, etc. with a scraper.
CAUTION:
Never allow gasket debris to enter passag es for engine oil or engine coolant.
2. At each of several locations on bottom surface of cylinder head, measure the distortion in six di rections using straightedge (A)
and feeler gauge (B).
• If it exceeds the limit, replace cylinder head.
INSTALLATION 1. Install cylinder head gasket.
2. Apply new engine oil to threads and seating surface of bolts. CAUTION: : Engine front
PBIC3206J
Limit [(d1) – (d2)]: 0.15 mm (0.0059 in)
PBIC3994E
Limit: 0.1 mm (0.004 in)
PBIC3207J
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EM-188< SERVICE INFORMATION >
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CYLINDER HEAD
If cylinder head bolts re-used, ch eck their outer diameters before in stallation. Follow the "Cylinder
Head Bolts Outer Diameter" procedure.
3. Install cylinder head, follow the steps below to tighten cylinder head bolts in numerical order as shown.
: Engine front
CAUTION:
Check and confirm the tightening angle by using Tool (A) or
protractor. Never judge by vi sual inspection without the
tool.
4. Installation of the remaining components is in the reverse order of removal.
Component INFOID:0000000004307153
Step a : 40 N·m (4.1 kg-m, 30 ft-lb)
Step b : 100 ° clockwise
Step c : Loosen to 0 N·m in the reverse order of tight- ening.
Step d : 40 N·m (4.1 kg-m, 30 ft-lb)
Step e : 100 ° clockwise
Step f : 100 ° clockwise
Tool number : KV10112100 (BT-8653-A) PBIC3206J
PBIC3208J
PBIC3543J
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Disassembly and Assembly
INFOID:0000000004307154
DISASSEMBLY 1. Remove spark plug using suitable tool.
2. Remove valve lifter. • Identify installation positions, and store them without mixing them up.
3. Remove valve collet. • Compress valve spring using Tool (A). Remove valve collet
using a suitable magnet hand.
CAUTION:
When working, be careful not to damage valve lifter holes.
4. Remove valve spring retainer and valve spring (with valve spring seat). CAUTION:
Never remove valve spring seat from valve spring.
5. Push valve stem to combustion chamber side, and remove valve. NOTE:
Identify installed positions, and st ore them without mixing them up.
6. Remove valve oil seal using Tool (A).
7. When valve seat must be replaced, refer to EM-190, " Inspection After Disassembly " .
8. When valve guide must be replaced, refer to EM-190, " Inspection After Disassembly " .
ASSEMBLY 1. Install valve guide if removed. Refer to EM-190, " Inspection After Disassembly " .
2. Install valve seat if removed. Refer to EM-190, " Inspection After Disassembly " .
1. Valve collet 2. Valve spring retainer 3. Valve spring (EXH) (with valve spring
seat)
4. Valve oil seal 5. Valve guide (EXH) 6. Valve seat (EXH)
7. Valve (EXH) 8. Valve (INT) 9. Valve seat (INT)
10. Cylinder head 11. Valve guide (INT) 12. Spark plug
13. Valve spring (INT ) (with valve spring
seat)
A. Refer to EM-190 B. Refer to
EM-190