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2.Use the special tool fuel
injection pipe wrench (MB992188) to remove the fuel
injection
pipe.
| caution |
Leaked fuel on parts causes a
decrease in function and burning.
Therefore, place waste to absorb leaked
fuel.
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3.Remove the rocker cover.
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4.Align the camshaft
sprocket timing marks and set the No. 1 cylinder at top dead
centre.
| caution |
The crankshaft should always
be turned in a clockwise direction.
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5.Measure the valve
clearance.
If the valve clearance is not as specified,
loosen the rocker arm lock nut and adjust
the clearance using a thickness gauge between the cam shaft
and the roller while turning the
adjusting screw.
Standard value (cold
engine):
Intake valve: 0.10 mm
Exhaust
valve: 0.15 mm
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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
| 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.
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7.Turn the crankshaft 360°
clockwise to bring No. 4 cylinder to the top dead
centre position.
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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.
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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 reinstalled, record the number of the
reinstallation 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
reinstallation 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 surface or in the pipe and then
install it not to deviate from the axis,
fitting the
seal surface.
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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.
| note |
During the test, the engine
speed and the fuel pressure is 2, 000 r/min and
180MPa for
20 seconds respectively.
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16.Confirm there is no fuel leak from the
joint for the injection pipe.
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