Workshop Manual PAJERO, MONTERO - uCoz

1 ENGINE <6G7>Click on the applicable bookmark to selected the required model <6G7>CONTENTSGENERAL Belt Tension Check and Timing Speed Mixture Pressure Manifold Vacuum Adjuster PAN AND OIL OIL OIL HEAD <6G7> -General Information/Service Specifications11A-3 GENERAL INFORMATIONI tems6G74-GDIT otal displacement ml3,497 Bore Stroke mm93 chamberPentroof + ball-in-pistonCamshaft arrangementDOHCN umber of valveIntake12 Exhaust12 Valve timingIntakeOpeningBTDC 8_ClosingABDC 56_ExhaustOpeningBBDC 48_ClosingATDC 16_Fuel systemElectronically controlled multipoint fuel injectionRocker armRoller typeAuto-lash adjusterEquippedSERVICE SPECIFICATIONSI temsStandard valueLimitBasic ignition timing5_BTDC 3_-Ignition timingApprox.

2 20_BTDC*1-Idle speed r/min600 100*1-CO contents % or less-HC contents ppm100 or less-Compression pressure (at engine speed of 280 r/min) kPa1,275980 Compression pressure difference of all cylinders kPa-Max. 98 Intake manifold vacuum kPa-Min. 56*2 Auto tensioner rod depth (mm)Within 1-Timing belt tension torque N rod protrusion amount - *1: Indicates the value measured within 4 minutes since the engine was started.*2: Indicates the value when more than 4 minutes have passed since the engine was <6G7> -Sealant/Special Tools11A-4 SEALANTI temsSpecified sealantsRemarksOil panMITSUBISHI GENUINE PARTMD970389 or equivalentSemi-drying sealantSPECIAL TOOLSToolNumberNameUseMB991502 MUT-IIsubassemblyDChecking the ignition timingDChecking the idle speedDErasing diagnosis codeMB991800 Pulley holderSupporting of crankshaft pulleyMB991802 Pin BMD998769 Crankshaft pulleyspacerOperating the crankshaft when installing thetiming beltMD998767 Tension pulleysocket wrenchTiming belt tension adjustmentMD998718 Crankshaft rear oilseal installerPress-fitting the crankshaft rear oil sealMD998781 Flywheel stopperSecuring the flywheelENGINE

3 <6G7> -Special Tools11A-5 ToolUseNameNumberMD998717 Crankshaft frontoil seal installerPress-in of the crankshaft front oil sealMB990767 End yoke holderSupporting of camshaft sprocketMD998719 Crankshaft pulleyholder pinMD998761 Camshaft oil sealinstallerPress-in of the camshaft oil sealMD998773 Detonation sensorwrenchDetonation sensor removal and installationMB991683 Sling chain setRemoval and installation of engine assemblyENGINE <6G7> -On-vehicle Service11A-6ON-VEHICLE SERVICEDRIVE BELT TENSION CHECK ANDADJUSTMENTC autionPerform the check after rotating the engine to the normaldirection (one revolution and over).1. Check that the indicator mark of the auto-tensioner islocated within the scope shown as A on the If the mark is located out of the scope A, replace thedrive the auto-tensioner is used, it is not necessary toadjust the tension of the CHECK1.

4 Run the engine at idling speed and then stop it to checkwhether the drive belt is forced out from the width ofthe auto-tensioner Remove the drive belt. (Refer )3. Move the auto-tensioner right and left by using a spinner handle and the like to check whether thereis no If some abnormality is found during the above mentionedcheck (1) and (3), replace the Install the drive belt. (Refer )IGNITION TIMING CHECK1. Before inspection, set the vehicle to the Turn the ignition switch to the LOCK (OFF) position, andthen connect the MUT-IIto the diagnosis Set a timing light to the ignition coil power supply line(intermediate connector No. 7 terminal) of the ignition coilintermediate connector engine-side Start the engine and let it run at Use the MUT-IIto measure engine idle speed and checkthat it is within the standard value: 600 100 (700 100)*NOTE*: Indicates the values when more than 4 minutes havepassed since the idling condition was markAMUT-IIIgnition coilintermediateconnectorENGINE <6G7> -On-vehicle Service11A-76.

5 Select of the MUT-IIActuator this time, the engine speed will become approximately700 Check that basic ignition timing is within the value: 5_BTDC 3_8. If the basic ignition timing is outside the standard value,inspect the GDI system while referring to GROUP 13A Press the MUT-IIclear key (Select a forced driving cancelmode) to release the Actuator the test is not cancelled, a forced driving willcontinue for 27 minutes. Driving under this conditionmay damage the Check that ignition timing is at the standard value: approx. 20_BTDC (AT)approx. 13_BTDC (MT)NOTE(1) The ignitiontiming willbecome approximately5_BTDC after more than 4 minutes have passed since thebasic ignition timing set mode was released.

6 (2) The ignition timing may fluctuate within is normal.(3) In higher altitude, the ignition timing is more advancedthan the standard value by approximately 5 Remove the timing Turn the ignition switch to the lock (OFF) position, andthen disconnect the SPEED CHECK1. Before inspection, set the vehicle to the Turn the ignition switch to the lock (OFF) position, andthen connect the MUT-IIto the diagnosis Check the basic ignition to concerning the check procedure of thebasic ignition value: 5_BTDC 3_4. Check the idle speed. Select item No. 22 and take areading of the idle value: 600 100 (700 100)*NOTE(1) *: Indicates the values when more than 4 minuteshave passed since the idling condition was started.

7 (2) The idle speed is controlled automatically by the idlespeed control <6G7> -On-vehicle Service11A-85. If the idle speed is outside the standard value, inspect theGDI components by referring to GROUP 13A MIXTURE CHECK1. Before inspection, set the vehicle to the Turn the ignition switch to the lock (OFF) position, andthen connect the MUT-IIto the diagnosis Check that the basic ignition timing is within the to concerning the check procedure of thebasic ignition value: 5_BTDC 3_4. Run the engine at 2,500 r/min for 2 Set the CO, HC Check the CO contents and the HC contents at measurement should be performed in less thanapproximately 4 minutes since the engine speed becomethe idle valueCO contents: or lessHC contents: 100 ppm or less7.

8 If there is a deviation from the standard value, check thefollowing items:DDiagnosis outputDFuel pressureDInjectorDIgnition coil, spark plugDEGR control systemDEvaporative emission control systemDCompression pressureNOTER eplace the three way catalyst when the CO and HCcontents are not within the standard value, even thoughthe result of the inspection is normal on all <6G7> -On-vehicle ServiceENGINE <6G7> -On-vehicle Service11A-9 COMPRESSION PRESSURE CHECK1. Before inspection, check that the engine oil, starter andbattery are normal. In addition, set the vehicle to thepre-inspection Remove all of the ignition coils and spark Disconnect the crank angle sensor this will prevent the engine-A/T-ECU from carryingout ignition and fuel Cover the spark plug hole with a shop towel etc.

9 , andafter the engine has been cranked, check that no foreignmaterial is adhering to the shop (1) Keep away from the spark plug hole whencranking.(2) If compression is measured with water, oil, fuel,etc., thathas come from cracks inside the cylinder,these materials will become heated and will gushout from the spark plug hole, which is Set compression gauge to one of the spark plug Crank the engine with the throttle valve fully open andmeasure the compression value (at engine speed of 280 r/min):1,275 kPaLimit (at engine speed of 280 r/min):Min. 980 kPa7. Measure the compression pressure for all the cylinders,andcheck thatthe pressuredifferences ofthe cylindersarebelow the : Max. 98 kPa8. If there is a cylinder with compression or a compressiondifference that is outside the limit, pour a small amountof engine oil through the spark plug hole, and repeatthe operations in steps 6 and 7.

10 (1) If the compression increases after oil is added, thecause of the malfunction is a worn or damaged pistonring and/or cylinder inner surface.(2) If the compression does not rise after oil is added,the causeisaburnt ordefective valveseat, orpressureis leaking from the Connect the crank angle sensor Install the spark plugs and ignition Use the MUT-IIto erase the diagnosis will erase the diagnosis code resulting from the crankangle sensor connector being angle sensorconnectorENGINE <6G7> -On-vehicle Service11A-10 INTAKE MANIFOLD VACUUM CHECK1. Before inspection, set the vehicle to the Turn the ignition switch to the LOCK (OFF) Connect the diagnosis connector to the Remove the ventilation hose from the PCV valve, connectthe ventilation hose to a vacuum gauge, and then plugthe PCV Start the engine, and let it run at Keep the engine run at idle for at least 4 minutes.