REMOVAL AND INSTALLATION







Removal steps


1.
Ignition coil
<<A>>
>>F<<
2.
Spark plugs
<<B>>
>>E<<
3.
Fuel high pressure tube


4.
Delivery pipe and injector


5.
Insulator

>>D<<
6.
Injector support

>>C<<
7.
O-ring

>>B<<
8.
Injector


9.
O-ring


10.
Delivery pipe


11.
Inlet manifold

>>A<<
12.
Inlet manifold gasket

REMOVAL SERVICE POINT



<<A>> SPARK PLUG REMOVAL



Using special tool Spark plug wrench (MB991398), removal the spark plug.

<<B>> FUEL HIGH PRESSURE TUBE REMOVAL



1.Insert a flathead screwdriver into the clearance between the quick connector and the retainer.
2.Rotate the flathead screwdriver 90°, hold up the retainer.
3.Remove the fuel high-pressure tube.

INSTALLATION SERVICE POINTS



>>A<< INLET MANIFOLD INSTALLATION



1.Tighten the nuts on the right bank to 7.0 ± 1.0 N·m.
2.Tighten the nuts on the left bank to the specified torque.
Tightening torque: 22 ± 1 N·m
3.Tighten the nuts on the right bank to the specified torque.
Tightening torque: 22 ± 1 N·m
4.Tighten the nuts on the left bank and those on the right bank again in that order.
Tightening torque: 22 ± 1 N·m

>>B<< INJECTOR INSTALLATION



caution Use care not to let gasoline enter the delivery pipe.
1.Apply gasoline to the O-ring.
2.Insert the injector into the delivery pipe.
3.Make sure the injector rotates smoothly. If not, remove the injector to check the O-ring for damage, and replace the O-ring if necessary. Then reinsert the injector and check that it rotates smoothly.

>>C<< O-RING INSTALLATION



When inserting an O-ring into the injector on the injection nozzle side, use special tool O-ring installer (MB992106) to gradually expand the O-ring, and fit it in place.

>>D<< INJECTOR SUPPORT INSTALLATION



1.Make sure that the protrusion of the injector is at the centre as shown in the illustration.

2.Securely assemble the injector to the injector groove and delivery pipe collar.

>>E<< FUEL HIGH PRESSURE TUBE INSTALLATION



caution Pay attention that the o-ring of the quick connector has neither scratches nor a fall.
1.Insert the quick connector of the fuel high pressure tube into the delivery pipe.
2.Fit the retainer of the fuel high-pressure tube in the direction shown in the illustration.
note Make sure the fuel high pressure tube is not pulled out when pulled lightly.
note Must confirm there is play of about 1 mm between quick connector and delivery pipe.

>>F<< SPARK PLUGS INSTALLATION



Using special tool Spark plug wrench (MB991398), tighten the spark plug to the specified torque.
Tightening torque: 18 ± 2 N·m