EM-238
< SERVICE DATA AND SPECIFICATIONS (SDS) [MR18DE]
SERVICE DATA AND SPECIFICATIONS (SDS)
SERVICE DATA AND SPECIFICATIONS (SDS)
SERVICE DATA AND SPECIFICATIONS (SDS)
Standard and LimitINFOID:0000000001337815
GENERAL SPECIFICATIONS
DRIVE BELT
WATER CONTROL VALVE
EXHAUST MANIFOLD
Unit: mm (in)
THERMOSTAT
SPARK PLUG
Unit: mm (in)
CYLINDER HEAD
Engine typeMR18DE
Cylinder arrangementIn-line 4
Displacement
cm
3 (cu in)1,798 (109.71)
Bore and stroke mm (in) 84.0 x 81.1 (3.307 x 3.192)
Valve arrangementDOHC
Firing order1-3-4-2
Number of piston ringsCompression 2
Oil 1
Compression ratio9.9
Compression pressure
kPa (bar, kg/cm
2 , psi) / 250 rpmStandard 1,500 (15.0, 15.3, 217.6)
Minimum 1,200 (12.0, 12.2, 174)
Differential limit between cylinders 100 (1.0, 1.0, 15)
Tension of drive belt Auto adjustment by auto-tensioner
Valve opening temperature 93.5 - 96.5°C (200 - 206°F)
Maximum valve lift 8 mm/ 108°C (0.315 in/ 226°F)
Valve closing temperature More than 90°C (194°F)
Items Limit
Surface distortionEach exhaust port 0.3 (0.012)
Entire part 0.7 (0.028)
Valve opening temperature 80.5 - 83.5°C (177 - 182°F)
Maximum valve lift 8 mm/ 95°C (0.315 in/ 203°F)
Valve closing temperature More than 77°C (171°F)
Plug typePlatinum-tipped TYPE
MakeNGK
Standard typePLZKAR6A-11
Spark plug gapNominal: 1.1 (0.043)
EM-256
< PRECAUTION >[K9K]
PRECAUTIONS
SPECIAL FEATURES
CAUTION:
The engine must not operate with:
- Diesel engine fuel containing more than 10% diester,
- Petrol, even in tiny quantities.
The system can inject the diesel into the engine at a pressure up to 1400 bars. Before carrying out
any work, check that the injector rail is not under pressure and that the fuel temperature is not too
high.
You must respect the cleaning and safety advice specified in this document for any work on the high
pressure injection system.
Removal of the interior of the pump and injectors is prohibited. Only the flow actuator, the fuel tem-
perature sensor and the venturi can be replaced.
For safety reasons, it is strictly forbidden to slacken a injection tube union when the engine is run-
ning.
It is not possible to remove the pressure sensor from the fuel rail because this may cause circuit
contamination malfunctions. If the pressure sensor fails, the pressure sensor, the rail and the five
injection tubes must be replaced.
It is strictly forbidden to remove any high pressure supply pump pulley marked number 070 575. If
the pump is being replaced, the pulley must be replaced.
It is forbidden to repair the wiring connecting the knock sensor (accelerometer) and the CKP sensor
(engine speed sensor). If the wiring should fail, it has to be replaced with new wiring.
Applying 12 volts directly to any component in the system is prohibited.
Ultrasonic carbon removal and cleaning are prohibited.
Never start the engine without the battery being connected correctly.
It is essential to replace all the disconnected air inlet plastic pipes.
INSTRUCTIONS FOR INJECTION TUBES
CAUTION:
All the injection tube removed must be systematically replaced along with the clips.
TIGHTENING THE INJECTION TUBES
NOTE:
fit the pump/rail pipe before the rail/injector pipes.
Rail-pump pipe
Undo the rail,
Grease the threads of the injection tube nuts,
Insert the injection tube olive into the taper of the high pressure pump outlet,
Insert the injection tube olive into the taper of the high pressure rail inlet.
Move the nut into position by hand, on the rail side then the pump side,
Tighten the rail,
Tighten the injection tube nuts on the rail side then on the pump side.
Rail/injector pipes
Undo the rail,
Grease the threads of the injection tube nuts,
Insert the injection tube olive into the taper of the high pressure injector inlet,
Insert the injection tube olive into the taper of the high pressure rail outlet,
Move the nuts into position by hand, on the injector side then the rail side,
Tighten the rail,
Ensure that the new clip, supplied with the new injection tube, is fitted,
Tighten the nuts of the injection tubes on the injector side first and then on the fuel rail side.
NOTE:
Before fitting a new injection tube, move back the nuts on the pipe then lightly lubricate the nut
threads with the oil from the sachet provided in the parts kit.
CHECKING SEALING AFTER REPAIR
CAUTION:
After any operation, check that there are no diesel leaks.
Reprime the circuit using the priming pump.
Start the engine and allow to warm up at idle speed, visually inspecting for any fuel leaks.
Apply tracing fluid around the high pressure connections of the pipe that has been replaced.
Once the engine coolant temperature is above 50°C and provided there are no malfunctions present, carry
out a road test, taking the engine speed up to 4000 rpm at least once to check that there are no leaks.
Perform a visual inspection after the road test to make sure that there are no high pressure leaks.
Clean off the tracing fluid.
INJECTION TUBE AND FUEL INJECTOR
EM-281
< ON-VEHICLE REPAIR >[K9K]
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INJECTION TUBE AND FUEL INJECTOR
Exploded ViewINFOID:0000000001381490
Removal and InstallationINFOID:0000000001381491
REMOVAL
CAUTION:
Be sure to read “Precautions for Diesel Equipment”. Refer to EM-253, "
Precaution for Diesel Equip-
ment".
Wait until the fuel temperature drops before carrying out any work.
Order the special high pressure injection circuit plug kit.
Never open an injector. If you open an injector by mistake, you will have to change it.
This is because of the manufacturing and installation tolerances and because there is a risk of con-
taminating the inside of the injector.
The rod filter of the injector must not be removed.
NOTE:
It is possible to replace a single injection tube.
1. Disconnect the battery.
2. Remove the air duct (inlet). Refer to EM-269, "
Exploded View".
3. Remove engine cover. Refer to EM-270, "
Removal and Installation".
4. Remove charge air cooler hose and pipes. Refer to EM-270, "
Exploded View".
5. Remove oil level gauge guide and plug the hole.
1. Spill hose 2. Injection tube 3. Fuel injector
4. Heat protection washer 5. Fuel injector bracket 6. Fuel injector bracket spacer
7. Fuel rail stud bolt 8. Fuel rail 9. High pressure pipes protection cover
(lower)
10. Injection tube 11. High pressure supply pump 12. High pressure pipes protection cover
(upper)
13. Oil level gauge guide
E1BIA0018GB
HIGH PRESSURE SUPPLY PUMP
EM-287
< ON-VEHICLE REPAIR >[K9K]
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HIGH PRESSURE SUPPLY PUMP
Exploded ViewINFOID:0000000001381495
Removal and InstallationINFOID:0000000001381496
REMOVAL
CAUTION:
Be sure to read “Precautions for Diesel Equipment”. Refer to EM-253, "
Precaution for Diesel Equip-
ment".
Wait until the fuel temperature drops before carrying out any work.
Order the special high pressure injection circuit plug kit.
It is strictly forbidden to remove any high pressure supply
pump sprocket marked number 070 575 (see diagram). If the
pump is being replaced, the pulley must be replaced.
1. Disconnect the battery.
2. Remove air duct (inlet). Refer to EM-269, "
Exploded View".
3. Remove engine cover.
4. Remove blow-by hose.
5. Remove charge air cooler hose and pipes. Refer to EM-270,
"Exploded View".
6. Remove the RH front tire. Refer to WT-6, "
Rotation".
7. Remove fender protector (RH). Refer to EXT-22, "
Removal and
Installation".
8. Remove drive belt. Refer to EM-263, "
Removal and Installation".
9. Support the engine using suitable tool.
10. Remove the timing belt. Refer to EM-291, "
Removal and Installation".
11. Remove the oil level gauge guide and plug the hole. Refer to EM-281, "
Exploded View".
12. Remove high pressure pipes protection cover (upper). Refer to EM-281, "
Exploded View".
13. Carefully disconnect:
The connectors from the flow actuator,
The connectors from the fuel temperature sensor,
On the pump, the fuel supply and return pipes.
The return pipe connecting the injectors with the pump.
14. Remove the injection tube connecting the pump to the rail. Refer to EM-281, "
Removal and Installation".
1. High pressure supply pump protec-
tor2. Stud bolt 3. High pressure supply pump
4. Engine cover bracket
E1BIA0119GB
MBIB9036E
PRECAUTIONS
GI-45
< PRECAUTION >
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Use hand tools, power tools (disassembly only) and recommended
special tools where specified for safe and efficient service repairs.
When repairing the fuel, oil, water, vacuum or exhaust systems,
check all affected lines for leaks.
Before servicing the vehicle:
Protect fenders, upholstery and carpeting with appropriate covers.
Take caution that keys, buckles or buttons do not scratch paint.
WARNING:
To prevent ECM from storing the diagnostic trouble codes, do not carelessly disconnect the harness
connectors which are related to the engine control system and TCM (transmission control module)
system. The connectors should be disconnected only when working according to the WORK FLOW of
TROUBLE DIAGNOSES in EC and AT sections.
Precaution for Three Way CatalystINFOID:0000000001606119
If a large amount of unburned fuel flows into the catalyst, the catalyst temperature will be excessively high. To
prevent this, follow the instructions.
Use unleaded gasoline only. Leaded gasoline will seriously damage the three way catalyst.
When checking for ignition spark or measuring engine compression, make tests quickly and only when nec-
essary.
Do not run engine when the fuel tank level is low, otherwise the engine may misfire, causing damage to the
catalyst.
Do not place the vehicle on flammable material. Keep flammable material off the exhaust pipe and the three
way catalyst.
Precaution for Fuel (Unleaded Regular Gasoline Recommended)INFOID:0000000001606120
Use unleaded regular gasoline with an octane rating of at least 87 AKI (Anti-Knock Index) number (Research
octane number 91).
CAUTION:
Do not use leaded gasoline. Using leaded gasoline will damage the three way catalyst. Do not use E-85
fuel (85% fuel ethanol, 15% unleaded gasoline) unless the vehicle is specifically designed for E-85 fuel
(i.e. Flexible Fuel Vehicle - FFV models). Using a fuel other than that specified could adversely affect
the emission control devices and systems, and could also affect the warranty coverage validity.
PBIC0190E
SGI234
GI-52
< BASIC INSPECTION >
SERVICE INFORMATION FOR ELECTRICAL INCIDENT
Do not apply excessive shock to the control unit by dropping or hit-
ting it.
Be careful to prevent condensation in the control unit due to rapid
temperature changes and do not let water or rain get on it. If water
is found in the control unit, dry it fully and then install it in the vehi-
cle.
Be careful not to let oil to get on the control unit connector.
Avoid cleaning the control unit with volatile oil.
Do not disassemble the control unit, and do not remove the upper
and lower covers.
When using a DMM, be careful not to let test probes get close to
each other to prevent the power transistor in the control unit from
damaging battery voltage because of short circuiting.
When checking input and output signals of the control unit, use the
specified check adapter.
How to Check TerminalINFOID:0000000001691469
CONNECTOR AND TERMINAL PIN KIT
Use the connector and terminal pin kits listed below when replacing connectors or terminals.
The connector and terminal pin kits contain some of the most commonly used NISSAN/INFINITI connectors
and terminals. For detailed connector and terminal pin replacement procedures, refer to the latest NISSAN/
INFINITI CONNECTOR AND TERMINAL PIN SERVICE MANUAL.
SAIA0255E
SEF348N
HA-8
< PRECAUTION >
PRECAUTIONS
O-Ring Part Numbers and Specifications
CAUTION:
When replacing or cleaning refrigerant cycle components, observe the following.
When the compressor is removed, store it in the same position as it is when mounted on the vehicle.
Doing so will cause oil to enter the low-pressure chamber.
When connecting tubes, always use a torque wrench and a back-up wrench.
After disconnecting tubes, immediately plug all openings to prevent entry of dirt and moisture.
When installing an air conditioner in the vehicle, connect the pipes as the final stage of the opera-
tion. Do not remove the seal caps of pipes and other components until just before required for con-
nection.
Allow components stored in cool areas to warm to working area temperature before removing seal
caps. This prevents condensation from forming inside A/C components.
Thoroughly remove moisture from the refrigeration system before charging the refrigerant.
Always replace used O-rings.
When connecting tube, apply the specified A/C oil to circle of the O-rings as shown. Be careful not to
apply oil to threaded portion.
O-ring must be closely attached to dented portion of tube.
When replacing the O-ring, be careful not to damage O-ring and tube.
Connect tube until you hear it click, then tighten the nut or bolt by hand until snug. Make sure that
the O-ring is installed to tube correctly.
After connecting line, perform leak test and make sure that there is no leakage from connections.
When the refrigerant leaking point is found, disconnect that line and replace the O-ring. Then tighten
connections of seal seat to the specified torque.
Precaution for Service of CompressorINFOID:0000000001396433
Plug all openings to prevent moisture and foreign matter from entering.
Connection type Piping connection point Part number QTY O-ring size
NewCondenser to high-pressure flexible hose 92472 N8210 1 12
Condenser to high-pressure pipe 92471 N8210 1 8
Low-pressure flexible hose to expansion valve 92473 N8210 1 16
High-pressure pipe to expansion valve 92471 N8210 1 8
Compressor to low-pressure flexible hose 92474 N8210 1 19
Compressor to high-pressure flexible hose 92472 N8210 1 12
Liquid tank to condenser pipeInlet
92471 N82101
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Outlet 1
FormerRefrigerant pressure sensor to condenser J2476 89956 1 10
Expansion valve to evaporatorInlet 92471 N8200 2 12
Outlet 92473 N8200 2 16
RHA861F
HAC-78
< SYMPTOM DIAGNOSIS >[MANUAL AIR CONDITIONER]
INSUFFICIENT COOLING
High-pressure Side is Too High and Low-pressure Side is Too Low
High-pressure Side is Too Low and Low-pressure Side is Too High
Both High- and Low-pressure Sides are Too Low
Gauge indication Refrigerant cycle Probable cause Corrective action
Both high- and low-pressure
sides are too high.Pressure is reduced soon af-
ter water is splashed on con-
denser.Excessive refrigerant charge in refrig-
eration cycle.Reduce refrigerant until
specified pressure is ob-
tained.
Air suction by cooling fan is in-
sufficient.Insufficient condenser cooling perfor-
mance.
↓
1. Condenser fins are clogged.
2. Improper fan rotation of cooling
fan. Clean condenser.
Check and repair cooling
fan if necessary.
Low-pressure pipe is not
cold.
When compressor is
stopped high-pressure val-
ue quickly drops by approx-
imately 196 kPa (1.96 bar, 2
kg/cm
2 , 28 psi). It then de-
creases gradually thereaf-
ter.Poor heat exchange in condenser
(After compressor operation stops,
high-pressure decreases too slowly.).
↓
Air in refrigeration cycle.Evacuate repeatedly and
recharge system.
Engine tends to overheat. Engine cooling systems malfunction.Check and repair each en-
gine cooling system.
An area of the low-pressure
pipe is colder than areas
near the evaporator outlet.
Plates are sometimes cov-
ered with frost. Excessive liquid refrigerant on low-
pressure side.
Excessive refrigerant discharge
flow.
Expansion valve is open a little
compared with the specification.
↓
Improper expansion valve adjust-
ment.Replace expansion valve.
AC359A
Gauge indication Refrigerant cycle Probable cause Corrective action
High-pressure side is too high
and low-pressure side is too low.
Upper side of condenser and
high-pressure side are hot,
however, liquid tank is not so
hot.High-pressure tube or parts located
between compressor and condenser
are clogged or crushed. Check and repair or re-
place malfunctioning
parts.
Check oil for contami-
nation.
AC360A
Gauge indication Refrigerant cycle Probable cause Corrective action
High-pressure side is too low
and low-pressure side is too
high.High- and low-pressure sides
become equal soon after com-
pressor operation stops.Compressor pressure operation
is improper.
↓
Damaged inside compressor
packings.Replace compressor.
No temperature difference be-
tween high- and low-pressure
sides.Compressor pressure operation
is improper.
↓
Damaged inside compressor
packings.Replace compressor.
AC356A