2005 NISSAN X-TRAIL exhaust

CAMSHAFT
EM-189
[YD22DDTi]
C
D
E
F
G
H
I
J
K
L
MA
EM

9. Select the new adjusting shim from the following methods.

New adjusting shims have the thickness stamped on the rear
side.

Shims are available in 33 size from 2.10 mm (0.0827 in) to
2.74 mm (0.1079 in), in steps of 0.02 mm (0.0008 in).
10. Fit the selected adjusting shim to valve lifter.
CAUTION:
Place the stamped side of adjusting shim to valve lifter.
11. Compress valve spring using the camshaft pliers (special service tool: KV10115110) and remove the lifter
stopper (special service tool).
12. Rotate crankshaft 2 to 3 turns by hand.
13. Confirm that the valve clearance is within the specification. Refer to EM-185, "
INSPECTION" .
14. Install remaining parts in the reverse order of removal. Refer to EM-184, "
INSTALLATION" .
15. Warm up the engine, and check for unusual noise and vibration.Calculation method of the adjusting shim thickness:
R = Thickness of removed shim
N = Thickness of new shim
M = Measured valve clearance
Intake
N = R + [M - 0.28 mm (0.0010 in)]
Exhaust
N = R + [M - 0.30 mm (0.0118 in)]
Stamped mark Shim thickness mm (in)
2.10
2.12
·
·
·
2.74 2.10 (0.0827)
2.12 (0.0835)
·
·
·
2.74 (0.1079)
JEM184G
PBIC2325E

EM-210
[YD22DDTi]
CYLINDER HEAD

10. Complete this operation as follows:
a. Turn the ignition switch to “OFF”.
b. Disconnect the battery cable from the negative terminal.
c. Install glow plug and install all the parts removed in step 4.
d. Install fuel pump fuse [ENG CONT (20A)].
e. Connect the battery cable to the negative terminal.
f. Using CONSULT-II make sure no DTC is indicated for items of self-diagnosis.
Removal and InstallationEBS00LRW
REMOVAL
1. Drain engine coolant. Refer to CO-32, "Changing Engine Coolant" .
2. Remove the following:

Charge air cooler (Refer to EM-144, "Removal and Installation" .)

Rocker cover (Refer to EM-178, "Removal and Installation" .)

Air cleaner and air duct (Refer to EM-142, "Removal and Installation" .)

Vacuum pump (Refer to EM-163, "Removal and Installation" .)

Spill tube and fuel injector (Refer to EM-167, "Removal and Installation" .)

Intake manifold (Refer to EM-146, "Removal and Installation" .)

Exhaust manifold and turbocharger (Refer to EM-151, "Removal and Installation" .)

Secondary timing chain (Refer to EM-193, "Removal and Installation" .)

Camshaft (Refer to EM-180, "Removal and Installation" .)
3. Remove cylinder head assembly.
1. Glow plug 2. Cylinder head assembly 3. Cylinder head bolt
4. Copper washer 5. Engine coolant temperature sensor 6. Gasket
7. Water outlet 8. Dowel pin 9. Cylinder gasket
10. Glow harness 11. Glow plate 12. Cap
PBIC2437E

EM-214
[YD22DDTi]
CYLINDER HEAD

c. Tighten 180 degrees in numerical order as shown (angle tight-
ening).
d. Loosen completely in reverse order of that shown in the figure.
e. Tighten all bolts in numerical order as shown.
f. Tighten 90 degrees in numerical order as shown (angle tighten-
ing).
g. Tighten another 90 degrees in numerical order as shown (angle
tightening).
CAUTION:

When the angle wrench (special service tool) is not used, paint an alignment mark on the head
of cylinder head bolt and cylinder head surface before tightening. Check the angle with a pro-
tractor.
4. Install glow plug.
CAUTION:

To avoid damage, glow plugs should be removed only when required.

Handle with care to avoid applying shock. When dropped from approx. 10 cm (3.94 in) or higher,
always replace with a new one.

Before installing, remove carbon depositing on mounting hole of glow plug with a reamer.
5. Install in the reverse order of removal.
INSPECTION AFTER INSTALLATION
Inspection for Leaks
The following are procedures for checking fluids leak, lubricates leak and exhaust gases leak.

Before starting engine, check oil/fluid levels including engine coolant and engine oil. If less than required
quantity, fill to the specified level. Refer to MA-17, "
RECOMMENDED FLUIDS AND LUBRICANTS" .

Before starting engine, bleed air from fuel piping. Refer to FL-18, "Air Bleeding" .

Run engine to check for unusual noise and vibration.

Warm up engine thoroughly to make sure there is no leakage of fuel, exhaust gases, or any oil/fluids
including engine oil and engine coolant.

Bleed air from lines and hoses of applicable lines, such as in cooling system.

After cooling down engine, again check oil/fluid levels including engine oil and engine coolant. Refill to the
specified level, if necessary.
Summary of the inspection items:
* Transmission/transaxle/CVT fluid, power steering fluid, brake fluid, etc.
: 0 N·m (0 kg-m, 0 ft-lb)
:39.2 N·m (4.0 kg-m, 29 ft-lb)
JEM166G
Item Before starting engine Engine running After engine stopped
Engine coolant Level Leakage Level
Engine oil Level Leakage Level
Other oils and fluid* Level Leakage Level
Fuel Leakage Leakage Leakage
Exhaust gases — Leakage —

CYLINDER HEAD
EM-215
[YD22DDTi]
C
D
E
F
G
H
I
J
K
L
MA
EM

Disassembly and AssemblyEBS00LRX
DISASSEMBLY
1. Remove adjusting shims and valve lifters.

Check the installation positions, and keep them to avoid being confused.
2. Remove valve collet.

Using the valve spring compressor, attachment and adapter
(special service tool), compress valve spring. Using magnet
hand, remove valve collets.
3. Remove valve spring retainers and valve springs.
4. Remove valves as pressing valve stems toward combustion chamber.

Before removing valve, check the valve guide clearance. Refer to EM-217, "Valve Guide Clearance" .
1. Adjusting shim 2. Valve lifter 3. Valve collet
4. Valve spring retainer 5. Valve spring 6. Valve oil seal
7. Valve spring seat 8. Valve guide 9. Cylinder head
10. Valve seat 11. Valve (Exhaust) 12. Valve (Intake)
PBIC2328E
PBIC2388E

EM-216
[YD22DDTi]
CYLINDER HEAD

NOTE:
Refer to the figure for intake and exhaust valve positions.
Intake and exhaust valve driving cams are provided alter-
nately for each camshaft.
5. Remove valve oil seals using the valve oil seal puller (special
service tool).
6. Remove valve spring seats.
7. When removing valve seats must be replaced. Refer to EM-219, "
Valve Seat Replacement" .
8. When removing valve guides must be replaced. Refer to EM-218, "
Valve Guide Replacement" .
ASSEMBLY
1. Install valve guides if removed. Refer to EM-218, "Valve Guide Replacement" .
2. Install valve seats if removed. Refer to EM-219, "
Valve Seat Replacement" .
3. Using the valve oil seal drift (special service tool), install valve oil
seals referring to the dimension shown in the figure.
4. Install valve spring seats.
5. Install valves.

Install larger diameter to intake valve side.

Note that valve layout here is different from that of conven-
tional engine.
6. Install valve spring.
SBIA0196E
JEM153G
JEM165G
SBIA0196E

CYLINDER HEAD
EM-217
[YD22DDTi]
C
D
E
F
G
H
I
J
K
L
MA
EM

7. Install valve spring retainers.
8. Using the valve spring compressor, attachment and adapter
(special service tool), compress valve springs.
Then install valve collets using magnet hand.

After installing valve collets, tap the stem end using the plastic
hammer, and check the installation status.
9. Install valve lifters and adjusting shims to the same positions as before.
INSPECTION AFTER DISASSEMBLY
Valve Dimension

Check dimensions of each valve. For dimensions, refer to EM-
259, "Valve Dimensions" .

If dimensions are out of the standard, replace valve.
Valve Guide Clearance
VALVE STEM DIAMETER

Measure diameter of valve stem with micrometer.
VALVE GUIDE INNER DIAMETER

Measure inner diameter of valve guide with bore gauge.
VALVE GUIDE CLEARANCE

(Valve guide clearance) = (Valve guide inner diameter) – (Valve stem diameter).
PBIC2388E
SEM188A
Standard
Intake : 5.965 - 5.980 mm (0.2348 - 0.2354 in)
Exhaust : 5.945 - 5.960 mm (0.2341 - 0.2346 in)
SEM938C
Standard
Intake and Exhaust : 6.000 - 6.018 mm (0.2362 - 0.2369 in)
Valve guide clearance:
Standard
Intake : 0.020 - 0.053 mm (0.0008 - 0.0021 in)
Exhaust : 0.040 - 0.073 mm (0.0016 - 0.0029 in)
Limit

EM-218
[YD22DDTi]
CYLINDER HEAD


If it exceeds the limit, replace valve and/or valve guide.
Valve Guide Replacement
When removing valve guide, replace it with oversized [0.2 mm (0.0008 in)] valve guide.
1. Heat cylinder head to 110 to 130°C (230 to 266°F) by soaking in
heated oil.
2. Using the valve guide drift (commercial service tool), tap valve
guides out from the combustion chamber side.
CAUTION:
Cylinder head contains heat, when working, wear protective
equipment to avoid getting burned.
3. Ream cylinder head valve guide hole with the valve guide
reamer (commercial service tool).
4. Heat cylinder head to 110 to 130°C (230 to 266°F) by soaking in
heated oil.Intake : 0.08 mm (0.0031 in)
Exhaust : 0.10 mm (0.0039 in)
SEM008A
SEM931C
Valve guide hole diameter (for service parts)
Intake and Exhaust:
10.175 - 10.196 mm (0.4006 - 0.4014 in)
SEM932C
SEM008A

CYLINDER HEAD
EM-219
[YD22DDTi]
C
D
E
F
G
H
I
J
K
L
MA
EM

5. Using the valve guide drift (commercial service tool), press fit
valve guides from camshaft side, referring to the dimension
shown in the figure.
CAUTION:
Cylinder head contains heat, when working, wear protective
equipment to avoid getting burned.
6. Using the valve guide reamer (commercial service tool), perform
reaming to the press-fitted valve guides.
Valve Seat Contact

Before starting this check, confirm that the dimension of valve
guide and valves are as specified.

Apply red lead primer on contacting surfaces of valves seat and
of valve face to examine the conditions of contacting surfaces.

Make sure that the paint on contacting surfaces is continuous
along the entire circumference.

If there are abnormal indications, grind the valve and check the
contact again. If malfunction indications still persist, replace
valve seat. Refer to EM-219, "
Valve Seat Replacement" .
Valve Seat Replacement
When removing valve seat, replace it with oversized [0.5 mm (0.020 in)] valve seat.
1. Bore out old seat until it collapses. Boring should not continue beyond the bottom face of the seat recess
in cylinder head. Set the machine depth stop to ensure this. Refer to EM-261, "
Va l v e S e a t" .
2. Ream cylinder head recess diameter for service valve seat.

Be sure to ream in circles concentric to the valve guide center.

This will enable valve seat to fit correctly.Projection length “H” : 10.4 - 10.6 mm (0.409 - 0.417 in)
PBIC2187E
Standard
Intake and Exhaust:
6.000 - 6.018 mm (0.2362 - 0.2369 in)
SEM932C
SBIA0322E
Oversize [0.5 mm (0.020 in)]:
Intake : 30.500 - 30.516 mm (1.2008 - 1.2014 in)
Exhaust : 29.500 - 29.516 mm (1.1614 - 1.1620 in)
SEM795A