OPERATIONS INSIDE THE ENGINE COMPARTMENT
PERIODIC INSPECTION AND MAINTENANCE
2-14
CAUTION
Pay special attention that the tightening torque is
not beyond this value. If the tightening torque is
beyond the value, the value stem would possibly
bend.
6. While holding the adjusting screw with a
screwdriver to prevent it from turning, tighten the
lock nut to the specified torque using a valve
adjusting socket. (MB992046)
Tightening torque: 9.8 ± 1 N⋅ m
7. Turn the crankshaft 360° clockwise to bring No. 4
cylinder to the top dead centre position.
8. Measure the valve clearances at the places
indicated by arrows in the illustration. If the
clearance is not within the standard value, repeat
steps 5 and 6 above.
9. Install the rocker cover.
10.Use the special tool fuel injection pipe wrench
(MB992188) to tighten the fuel injection pipe to
the specified torque.
Tightening torque: 35 ± 5 N⋅ m
CAUTION
• The reinstallation histories of the removed
injection pipe are up to five times. To count
how many times the injection pipe is rein
-
stalled, record the number of the reinstalla-
tion histories on the service booklet by
adding this latest number of the histories,
which is usually "1", to the previous one. Use
a new injection pipe when the total reinstalla
-
tion history numbers reach five times, or
when the injector or common rail is replaced.
In this case, record "a new injection pipe, the
number of the reinstallation histories is zero"
on the service booklet.
• When the injection pipe is reinstalled, confirm
there is no foreign material on the seal sur
-
face or in the pipe and then install it not to
deviate from the axis, fitting the seal surface.
11.Install the EGR pipe.
12.After the ignition switch is in "LOCK" (OFF)
position, connect the M.U.T.-III to the diagnosis
connector.
13.Start the engine, and let it run at idle.
14.Select SPECIAL FUNCTION from the function
menu.
15.Select FUEL LEAKAGE CHECK from SPECIAL
FUNCTION menu to execute the test.
AK500542
AB
MB992046
Thickness
gauge
AK500544AC
Exhaust valve side
Intake valve side
AC609910
AB
MB992188
AK600672
MB992188
AB
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