2001 NISSAN X-TRAIL length

EM-150
[YD22DDTi]
FUEL SUPPLY PUMP
19. Using a hexagon-head wrench [face to face 6 mm (0.24 in) SST]
remove bolts to fuel supply pump sprocket.
20. Using the sprocket holder (SST), hold the fuel supply pump
sprocket to prevent falling.
●As for the sprocket holder, install fuel supply pump mounting
bolt through hole of KV11106060 as shown in figure.
●When the sprocket holder is installed, if the positioning stop-
per pin interferes, pull out the stopper pin approximately 10
mm (0.39 in), then install it.
●After the sprocket holder is installed temporarily, insert the
extension bar (SST) and TORX socket in the three holes A.
After positioning the holes, tighten the holder mounting bolts.
●The length of the sprocket holder mounting bolts should be
approximately 15 mm (0.59 in) (M6 thread length).
●Make sure that the a- and b-faces of the sprocket holder con-
tact the bottom side of the sprocket (small diameter side).
CAUTION:
Do not remove the sprocket holder until the fuel supply
pump is installed.
●After the sprocket holder is installed, pull out the positioning
stopper pin (SST) from the fuel supply pump sprocket.
PBIC0945E
SBIA0216E
SBIA0217E
PBIC1254E
SBIA0219E

FUEL SUPPLY PUMP
EM-151
[YD22DDTi]
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21. Using the extension bar [SST: whole length 43 mm (1.69 in)] and
the TORX socket (Q6-E12: commercially available), remove the
mounting bolts, them remove the fuel supply pump toward the
rear of the engine
CAUTION:
Do not disassemble or adjust the fuel supply pump.
22. Remove the fuel supply pump mounting bolts.
NOTE:
The seal washer of the mounting bolts cannot be reused.
CAUTION:
For removal, be careful not to drop the seal washer into the
engine.
23. Remove adjusting shim.
24. Attach a suitable tool in the M8 bolt hole on coupling.
25. Loosen sprocket nut with the TORX wrench (SST).
26. Remove coupling with a suitable puller.
27. Remove fuel supply pump housing.
●Using a hexagon-head wrench [face to face 5mm (0.20in)
SST], remove bolt to remove fuel supply pump housing.
28. Remove O-rings from fuel supply pump housing.
SBIA0220E
SBIA0221E
PBIC0902E
PBIC0903E
PBIC0904E

EM-174
[YD22DDTi]
PRIMARY TIMING CHAIN
REMOVAL
1. Remove engine coolant reservoir tank.
2. Remove charge air cooler and bracket. Refer to EM-122, "
Removal and Installation" .
3. Remove air cleaner and air duct. Refer to EM-120, "
Removal and Installation" .
4. Remove rocker cover. Refer to EM-156, "
Removal and Installation" .
5. Remove RH engine mount insulator and bracket. Refer to EM-193, "
Removal and Installation" .
6. Pull power steering reservoir tank out of brackets to move power steering piping.
CAUTION:
To avoid removing power steering reservoir tank out of brackets move it with power steering pip-
ing aside.
7. Remove oil pan. Refer to EM-133, "
Removal and Installation" .
8. Remove oil filter bracket. Refer to LU-22, "
OIL FILTER BRACKET" .
9. Remove injection tube and fuel injector. Refer to EM-144, "
Removal and Installation" .
10. Remove secondary timing chain and associated parts. Refer to EM-167, "
Removal and Installation" .
11. When removing rear chain case, remove camshaft sprockets. Refer to EM-158, "
Removal and Installa-
tion" .
12. Remove crankshaft pulley.
a. Hold crankshaft pulley with the pulley holder (SST).
b. Loosen crankshaft pulley fixing bolt and pull out the bolt approx-
imately 10 mm (0.39 in).
c. Using pulley puller (SST), remove crankshaft pulley.
●Use two M6 bolts with approx. 60 mm (2.36 in) shank length
for securing crankshaft pulley.
13. Remove oil pump housing.
●Loosen bolts in the reverse order of that shown in the figure
and remove them.
●Use seal cutter (SST) etc. for removal.
14. Remove front oil seal from oil pump housing.
●Punch out the seal off from the back surface of the oil pump
using a flat-bladed screwdriver.
●Be careful not to damage the oil pump housing.
7. Chain guide 8. Spacer 9. Front chain case
10. Crankshaft pulley 11. Front oil seal 12. Oil pump housing
13. Primary timing chain 14. Oil pump drive spacer 15. Crankshaft sprocket
16. Secondary timing chain 17. Rear chain case 18. Power steering pump
JEM131G
JEM132G
JEM133G

EM-178
[YD22DDTi]
PRIMARY TIMING CHAIN
b. Install four O-rings to the grooves of the cylinder block and fuel
supply pump bracket.
c. Install rear chain case.
●When installing, align the dowel pin with the pin hole.
d. Tighten bolts in the numerical order shown in the figure.
●Install the following four types of bolts, referring to the figure.
●The shank length under the bolt neck above is the length of
threaded part (pilot portion not included).
e. After tightening all the bolts, re-tighten in the same order.
2. Install power steering pump.
3. Install fuel supply pump.
●Before installing, make sure the notch on the fuel supply
pump flange and the hole 6 mm (0.24 in) in diameter on the
pump body are aligned.
4. Install chain guide and tension guides.
5. Install crankshaft sprocket, aligning it with the crankshaft key on
the far side.
6. Install primary timing chain with fuel supply pump sprocket.
●When installing, match the alignment marks on sprockets with
color coded alignment marks (colored links) on the chain.
●Install fuel supply pump sprocket washer with the surface
marked “F” (front mark) facing the front of the engine.
7. Install timing chain onto power steering pump sprocket and
through chain guide.
JEM141G
16 mm (0.63 in) : Bolt No. 1, 2, 16, 17, 18, 19, 20, 21, 22
20 mm (0.79 in) : Bolt No. 3, 4, 6, 9, 10, 11, 13, 14
25 mm (0.98 in) : Bolt No. 12, 15
35 mm (1.38 in) : Bolt No. 5, 7, 8
SBIA0211E
SBIA0210E
JEM136G

EM-192
[YD22DDTi]
CYLINDER HEAD
8. Use a depth gauge to measure the distance between the mount-
ing surface of the cylinder head spring seat and the valve stem
end. If the distance is shorter than specified, repeat step 5
above to adjust it. If it is longer, replace the valve seat with a
new one.
Valve Spring Sequences
Position a straightedge to valve spring, turn the spring, and measure
the maximum clearance value between top surface of spring and the
straightedge.
Valve Spring Dimensions and Valve Spring Pressure Load
Using valve spring tester, check the following.Valve seat resurface limit “L”:
Intake : 36.53 - 36.98 mm (1.4382 - 1.4559 in)
Exhaust : 36.53 - 37.01 mm (1.4382 - 1.4571 in)
JEM253G
Limit : 1.9 mm (0.075 in)
PBIC0080E
Free length : 43.7 mm (1.720 in)
Installation height : 32.82 mm (1.2921 in)
Installation load : 184 - 208 N
(18.77 - 21.22 kg, 41.4 - 46.8 lb)
Height during
valve open: 24.82 mm (0.9772 in)
Load with valve
open: 320 - 360 N
(32.65 - 36.73 kg, 71.9 - 80.9 lb)
SEM113

SERVICE DATA AND SPECIFICATIONS (SDS)
EM-221
[YD22DDTi]
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CYLINDER HEAD
Unit: mm (in)
VA LV E
Va l v e
Unit: mm (in)
Valve Clearance
Unit: mm (in)
*1: Approximately 20°C (68°F)
*2: Approximately 80°C (176°F) Item Standard Limit
Head surface distortion Less than 0.03 (0.0012) 0.04 (0.0016)
JEM204G
Valve head diameter “D”Intake 28.0 - 28.3 (1.102 - 1.114)
Exhaust 26.0 - 26.3 (1.024 - 1.035)
Valve length “L”Intake 106.72 (4.2016)
Exhaust 106.36 (4.1874)
Valve stem diameter “d”Intake 5.965 - 5.980 (0.2348 - 0.2354)
Exhaust 5.945 - 5.960 (0.2341 - 0.2346)
Valve seat angle “α”Intake
45°15′ - 45°45′
Exhaust
Valve margin “T”Intake 1.38 (0.0543)
Exhaust 1.48 (0.0583)
Valve margin “T” limitMore than 1.0 (0.039)
Valve stem end surface grinding limit Less than 0.2 (0.008)
SEM188
Item Cold*1 Hot*2 (reference data)
Intake 0.24 - 0.32 (0.0094 - 0.0126) 0.274 - 0.386 (0.011 - 0.015)
Exhaust 0.26 - 0.34 (0.0102 - 0.0134) 0.308 - 0.432 (0.012 - 0.017)

SERVICE DATA AND SPECIFICATIONS (SDS)
EM-223
[YD22DDTi]
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Valve Spring
Valve Lifter
Unit: mm (in)
Valve Guide
Unit: mm (in) Free height mm (in) 43.7 (1.720)
Pressure N (kg, lb) at height mm (in) 184 - 208 (18.77 - 21.22, 41.4 - 46.8) at 32.82 (1.2921)
Out-of-square mm (in) 1.9 (0.075)
Height during valve open mm (in) 24.82 (0.9772)
Load with valve open N (kg, lb) 320 - 360 (32.65 - 36.73, 71.9 - 80.9)
Item Standard
Valve lifter outer diameter 29.960 - 29.975 (1.1795 - 1.1801)
Lifter guide inner diameter 30.000 - 30.021 (1.1811 - 1.1819)
Clearance between lifter and lifter guide 0.025 - 0.061 (0.0010 - 0.0024)
Item Standard Service
Valve guide Outer diameter 10.023 - 10.034 (0.3946 - 0.3950) 10.223 - 10.234 (0.4025 - 0.4029)
Valve guide Inner diameter (Finished size) 6.000 - 6.018 (0.2362 - 0.2369)
Cylinder head valve guide hole diameter 9.975 - 9.996 (0.3927 - 0.3935) 10.175 - 10.196 (0.4006 - 0.4014)
Interference fit of valve guide 0.027 - 0.059 (0.0011 - 0.0023)
Item Standard Limit
Stem to guide clearanceIntake 0.020 - 0.053 (0.0008 - 0.0021) 0.08 (0.0031)
Exhaust 0.040 - 0.073 (0.0016 - 0.0029) 0.1 (0.004)
Valve deflection limit 0.15 (0.0059)
Projection length 10.4 - 10.6 (0.409 - 0.417)
JEM156G

ENGINE CONTROL SYSTEM
EC-33
[QR25(WITH EURO-OBD)]
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EC
System ChartEBS00M0B
*1: This sensor is not used to control the engine system under normal conditions.
*2: These signals are sent to the ECM through CAN communication line.
Multiport Fuel Injection (MFI) SystemEBS00M0C
INPUT/OUTPUT SIGNAL CHART
*1: Under normal conditions, this sensor is not for engine control operation.
SYSTEM DESCRIPTION
The amount of fuel injected from the fuel injector is determined by the ECM. The ECM controls the length of
time the valve remains open (injection pulse duration). The amount of fuel injected is a program value in the
ECM memory. The program value is preset by engine operating conditions. These conditions are determined
Input (Sensor) ECM Function Output (Actuator)
●Camshaft position sensor (PHASE)
●Crankshaft position sensor (POS)
●Mass air flow sensor
●Engine coolant temperature sensor
●Heated oxygen sensor 1
●Throttle position sensor
●Accelerator pedal position sensor
●Park/neutral position (PNP) switch
●Intake air temperature sensor
●Power steering pressure sensor
●Ignition switch
●Battery voltage
●Knock sensor
●Refrigerant pressure sensor
●Heated oxygen sensor 2 *1
●TCM (Transmission control module) *2
●Wheel sensor
●Air conditioner switch
●Electrical loadFuel injection & mixture ratio control Fuel injectors
Electronic ignition system Power transistors
Fuel pump control Fuel pump relay
On board diagnostic system MI (On the instrument panel)
Heated oxygen sensor 1 heater control Heated oxygen sensor 1 heater
Heated oxygen sensor 2 heater control Heated oxygen sensor 2 heater
Power valve control VIAS control solenoid valve
EVAP canister purge flow controlEVAP canister purge volume control
solenoid valve
Air conditioning cut control Air conditioner relay
Cooling fan control Cooling fan relays
Sensor Input Signal to ECMECM func-
tionActuator
Crankshaft position sensor (POS)
Engine speed
Piston position
Fuel injec-
tion & mix-
ture ratio
controlFuel injectors Camshaft position sensor (PHASE)
Mass air flow sensor Amount of intake air
Engine coolant temperature sensor Engine coolant temperature
Heated oxygen sensor 1 Density of oxygen in exhaust gas
Throttle position sensor Throttle position
Accelerator pedal position sensor Accelerator pedal position
Park/neutral position (PNP) switch Gear position
Ignition switch Start signal
Knock sensor Engine knocking condition
Battery Battery voltage
Power steering pressure sensor Power steering operation
Heated oxygen sensor 2 *
1Density of oxygen in exhaust gas
Wheel sensor Vehicle speed
Air conditioner switch Air conditioner operation