Nissan Frontier D40. Manual — part 583
EM-64
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CYLINDER HEAD
CYLINDER HEAD
Exploded View
INFOID:0000000005274290
Removal and Installation
INFOID:0000000005274291
REMOVAL
1.
Release fuel pressure. Refer to
.
2.
Drain engine coolant. Refer to
CO-12, "Changing Engine Coolant"
.
CAUTION:
• Perform this step when the engine is cold.
• Do not spill engine coolant on drive belt.
3.
Drain engine oil. Refer to
CAUTION:
• Perform this step when the engine is cold.
• Do not spill engine oil on drive belt.
4.
Remove intake manifold. Refer to
.
5.
Remove fuel injector and fuel tube assembly. Refer to
6.
Remove exhaust manifold and three way catalyst assembly. Refer to
7.
CO-28, "Removal and Installation"
8.
Remove heater outlet. Refer to
NOTE:
Can be removed and installed even when assembled with cylinder head.
9.
Remove front cover and timing chain. Refer to
10. Remove camshafts. Refer to
.
1.
Cylinder head assembly
2.
Cylinder head gasket
3.
Cylinder head bolt
A.
Refer to
EM-64, "Removal and Installation"
WBIA0835E
CYLINDER HEAD
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11. Loosen cylinder head bolts in reverse order as shown using
power tool.
12. Remove cylinder head.
13. 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, replace them with a new one.
• If reduction of outer diameter appears in a position other than (d2),
use it as (d2) point.
Cylinder Head Distortion
NOTE:
When performing this inspection, cylinder block distortion should also be checked. Refer to
.
1.
Using suitable tool, wipe off oil, scale, gasket, sealant and carbon deposits from surface of cylinder head.
CAUTION:
Do not allow gasket fragments to enter engine oil or engine coolant passages.
2.
At each of several locations on bottom surface of cylinder head,
measure the distortion in six directions.
• If it exceeds the limit, replace cylinder head.
INSTALLATION
1.
Install new cylinder head gasket.
2.
Install cylinder head following the steps below to tighten cylinder
head bolts in numerical order as shown.
CAUTION:
If cylinder head bolts re-used, check their outer diameters
before installation. Follow the "Cylinder Head Bolts Outer
Diameter" procedure.
NOTE:
Apply new engine oil to threads and seating surfaces of mount-
ing bolts.
KBIA0058E
Limit [(d1) (d2)]: 0.23 mm (0.0091 in)
WBIA0836E
Limit
: 0.1 mm (0.004 in)
PBIC0075E
KBIA0058E
EM-66
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CYLINDER HEAD
• Measure the tightening angle using Tool.
3.
Installation of the remaining parts is in reverse order of removal.
INSPECTION AFTER INSTALLATION
• Before starting the engine, check oil/fluid levels including engine coolant and engine oil. If the levels are
lower than required quantity, fill to the specified level. Refer to
MA-16, "For North America: Fluids and Lubri-
• Use procedure below to check for fuel leakage.
• Turn ignition switch ON (with engine stopped). With fuel pressure applied to the fuel piping, check for fuel
leakage at the connection points.
• Start engine. With engine speed increased, check again for fuel leakage at connection points.
• Run engine to check for unusual noise and vibration.
NOTE:
If hydraulic pressure inside timing chain tensioner drops after removal and installation, slack in the guide
may generate a pounding noise during and just after engine start. However, this is normal. Noise will stop
after hydraulic pressure rises.
• Warm up engine thoroughly to make sure there is no leakage of fuel, exhaust gas, or any oil/fluids including
engine oil and engine coolant.
• Bleed air from passages in lines and hoses, such as in cooling system.
• After cooling down the engine, again check oil/fluid levels including engine oil and engine coolant. Refill to
specified level if necessary.
• Summary of the inspection items:
* Transmission/transaxle/CVT fluid, power steering fluid, brake fluid, etc.
Tool number
: KV10112100 (BT-8653-A)
Step a
: 50 N·m (5.1 kg-m, 37 ft-lb)
Step b
: 60
°
clockwise
Step c
: Loosen to 0 N·m in the reverse order of
tightening.
Step d
: 39.2 N·m (4.0 kg-m, 29 ft-lb)
Step e
: 75
°
clockwise
Step f
: 75
°
clockwise
WBIA0617E
Item
Before starting engine
Engine running
After engine stopped
Engine coolant
Level
Leakage
Level
Engine oil
Level
Leakage
Level
Other oils and fluids*
Level
Leakage
Level
Fuel
Leakage
Leakage
Leakage
Exhaust gas
—
Leakage
—
CYLINDER HEAD
EM-67
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Exploded View
INFOID:0000000005274292
Disassembly and Assembly
INFOID:0000000005274293
DISASSEMBLY
1.
Remove spark plug.
2.
Remove valve lifter.
• Identify installation positions, and store them without mixing them up.
3.
Remove valve collet, valve spring retainer and valve spring
using Tool.
CAUTION:
• When working, be careful not to damage valve lifter holes.
• Do not remove valve spring seat from valve spring.
4.
Push valve stem to combustion chamber side, and remove valve.
• Identify installation positions, and store them without mixing them up.
1.
Valve collet
2.
Valve spring retainer
3.
Valve spring (with valve spring seat)
4.
Valve oil seal
5.
Valve guide
6.
Cylinder head
7.
Valve seat
8.
Valve (INT)
9.
Valve (EXH)
10. Spark plug tube
11. Spark plug
PBIC3024E
Tool numbers
: KV10116200 (J-26336-A)
: KV10115900 (J-26336-20)
WBIA0477E
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