REMOVAL AND INSTALLATION



caution When the injector assembly is replaced, register the injector identification code and perform the small injection quantity learning (Refer to GROUP 00 - Precautions before Service, What the Common Rail Engine Learns ).
Pre-removal Operation
  • Engine Cover Removal (Refer to GROUP 11G - Engine Assembly ).
  • Inlet Manifold Removal (Refer to GROUP 15 - Inlet Manifold ).
  • Fuel Injection Pipe Removal (Refer to ).

Post-installation Operation
  • Fuel Injection Pipe Installation (Refer to ).
  • Inlet Manifold Installation (Refer to GROUP 15 - Inlet Manifold ).
  • Engine Cover Installation (Refer to GROUP 11G - Engine Assembly ).





Removal steps


1.
Breather hose connection


2.
Harness bracket


3.
Timing belt front upper cover

>>D<<
4.
Oil seal

>>D<<
5.
Oil seal
<<A>>
>>C<<
6.
Rocker cover assembly


7.
Rocker cover gasket A


8.
Rocker cover gasket B


9.
Rocker cover gasket C

>>B<<
10.
Semi-circular packing

>>A<<
11.
Eye bolt

>>A<<
12.
Fuel leakage pipe

>>A<<
13.
Fuel leak-off gasket

>>A<<
14.
Injector holder bolt

>>A<<
15.
Injector supporter

>>A<<
16.
Pivot boss

>>A<<
17.
Fuel injector

>>A<<
18.
Nozzle gasket

REMOVAL SERVICE POINT



<<A>> ROCKER COVER ASSEMBLY REMOVAL



1.Turn the crankshaft clockwise, and remove the timing belt rear cover mounting bolts shown in the figure from the gap of the camshaft sprocket.

2.In the order shown in the figure, loosen the rocker cover assembly mounting bolts, and then remove the rocker cover assembly.

INSTALLATION SERVICE POINTS



>>A<< NOZZLE GASKET/FUEL INJECTOR/PIVOT BOSS/INJECTOR SUPPORTER/INJECTOR HOLDER BOLT/FUEL LEAK-OFF GASKET/FUEL LEAKAGE PIPE/EYE BOLT INSTALLATION





1.Clean the fuel injector assembly (nozzle) and the cylinder head (fuel injector insertion hole) by following the procedure below.
(1)
caution Do not clean the injection part of the nozzle with a resin spatula.
Using a resin spatula, scrape off the carbon deposit on the fuel injector nozzle side face ("A" shown in the figure).
(2) Spray the carburettor cleaner (MZ100139) or equivalent to the nozzle side face ("A" shown in the figure).
(3)
caution Do not touch the injection part of the nozzle with hand or wipe it with a rag.
Leave the injection part for a while until the carbon deposit melts down, and then blow air to the injection part.
(4) Insert special tool ornament remover (MB990784) to the cylinder head (fuel injector insertion hole) with turning the special tool as shown, and scrape off the carbon deposit.
(5)
caution In order to prevent carbon from adhering to the inner surface of the cylinder, blow air with the piston in the TDC position.
Remove the special tool, and blow off the carbon deposit on the cylinder head (fuel injector insertion hole) by air.
(6) Check that there is no carbon deposit remaining on the contact surface of the fuel injector nozzle gasket.
note Repeat Step 4 to Step 6 several times until the carbon deposit is completely removed.

2.Install the nozzle gasket, fuel injector, pivot boss, and injector supporter to the cylinder head as shown in the figure.
3.Apply a small amount of engine oil to the seat surface and thread of injector holder bolt, and then temporarily tighten the bolt to the cylinder head.
4.Set the fuel leak-off gasket to the fuel leakage pipe, and temporarily tighten to the fuel injector and to the cylinder head using the eye bolt.
5.Tighten the eye bolt of the fuel injector side to the specified torque.
Tightening torque: 15 ± 2 N·m
6.Tighten the eye bolt of the cylinder head side to the specified torque.
Tightening torque: 15 ± 2 N·m
7.Tighten the injector holder bolt to the specified torque.
Tightening torque: 10 ± 1 N·m

8.
caution
  • If the bolt is tightened less than the specified lower limit of 120°, the bolt may become loose. Be sure to tighten correctly.
  • If the bolt is tightened in excess of the specified upper limit of 125°, loosen the nut completely and repeat the entire procedures.
Using special tool angle gauge (MB991614), tighten the injector holder bolt in the illustrated sequence by a further 120° to 125°.

>>B<< SEMI-CIRCULAR PACKING INSTALLATION



Apply specified sealant to portions indicated in illustration.
Specified sealant: ThreeBond 1217G (MITSUBISHI MOTORS GENUINE Part No. 1000A923) or equivalent
note Install the semi-circular packing immediately after applying sealant.

>>C<< ROCKER COVER ASSEMBLY INSTALLATION



1.Apply specified sealant to portions indicated in illustration.
Specified sealant: ThreeBond 1217G (MITSUBISHI MOTORS GENUINE Part No. 1000A923) or equivalent
note Install the rocker cover assembly immediately after applying sealant.
2.Install the rocker cover assembly to the cylinder head.

3.Tighten the rocker cover assembly mounting bolts to the specified torque in the order shown in the figure.
Tightening torque: 2.5 ± 1.5 N·m
4.
caution After the installation, until a sufficient period of time (one hour or more) elapses, do not apply the oil or water to the sealant application area or start the engine.
Tighten the rocker cover assembly mounting bolts to the specified torque in the order shown in the figure again.
Tightening torque: 10 ± 2 N·m

>>D<< OIL SEAL INSTALLATION




Apply engine oil to the oil seal outer surface and drive in with a socket wrench.